!99 update patches for sw64 architecture

Merge Pull Request from: @guzitao 
 
These patches generally cover the following tasks:

1.optimize kernel cores, remove unused codes, simplify interfaces, fix compile errors
2.fixes for perf, fix perf_get_regs_user
3.add support, add ebpf-jit compiler support
4.modify interface, reimplement die_if_kernel, fix sys_rt_sigaction, 
5.fixes for kvm, expand the number of SWVM_IRQS, fix wrong info print of KVM_MEMHOTPLUG, turn off the clock 
  timer of guest os
6.fix dynamic CPUfreq scaling bugs
 
 
Link:https://gitee.com/openeuler/kernel/pulls/99 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com> 
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> 

arch/sw_64/Kconfig

@@ -14,7 +14,6 @@ config SW64
 	select GENERIC_IRQ_SHOW
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
-	select ARCH_MIGHT_HAVE_PC_SERIO
 	select ARCH_NO_PREEMPT
 	select ARCH_USE_CMPXCHG_LOCKREF
 	select GENERIC_SMP_IDLE_THREAD
@@ -24,7 +23,6 @@ config SW64
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_SECCOMP_FILTER
-	select OLD_SIGACTION
 	select OLD_SIGSUSPEND
 	select GENERIC_STRNCPY_FROM_USER
 	select GENERIC_STRNLEN_USER
@@ -92,11 +90,14 @@ config SW64
 	select ACPI_REDUCED_HARDWARE_ONLY
 	select GENERIC_TIME_VSYSCALL
 	select SET_FS
+	select HAVE_PCI
+	select GENERIC_PCI_IOMAP if PCI
 	select PCI_MSI_ARCH_FALLBACKS
 	select DMA_OPS if PCI
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select ARCH_HAS_PTE_SPECIAL
 	select HARDIRQS_SW_RESEND
+	select MEMORY_HOTPLUG_SPARSE if MEMORY_HOTPLUG
 
 config LOCKDEP_SUPPORT
 	def_bool y
@@ -141,6 +142,10 @@ config ARCH_HAS_ILOG2_U64
 config GENERIC_GPIO
 	bool
 
+config GENERIC_CALIBRATE_DELAY
+	bool
+	default y
+
 config ZONE_DMA32
 	bool
 	default y
@@ -240,6 +245,11 @@ config PLATFORM_XUELANG
 
 endchoice
 
+config MIGHT_HAVE_PC_SERIO
+	bool "Use PC serio device i8042"
+	select ARCH_MIGHT_HAVE_PC_SERIO
+	default n
+
 endmenu
 
 config LOCK_MEMB
@@ -509,17 +519,6 @@ config ISA_DMA_API
 	bool
 	default y
 
-config PCI
-	bool "PCI Support"
-	depends on SW64
-	select GENERIC_PCI_IOMAP
-	default y
-	help
-	  Find out whether you have a PCI motherboard. PCI is the name of a
-	  bus system, i.e. the way the CPU talks to the other stuff inside
-	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
-	  VESA. If you have PCI, say Y, otherwise N.
-
 config PCI_DOMAINS
 	def_bool PCI
 
@@ -724,7 +723,6 @@ config HZ
 	int "HZ of the short timer"
 	default 500
 
-source "drivers/pci/Kconfig"
 source "drivers/eisa/Kconfig"
 
 source "drivers/pcmcia/Kconfig"

arch/sw_64/chip/chip3/chip.c

@@ -393,7 +393,6 @@ static void chip3_set_rc_piu(unsigned long node, unsigned long index)
 	/* set DMA offset value PCITODMA_OFFSET */
 	write_piu_ior0(node, index, EPDMABAR, PCITODMA_OFFSET);
 	if (IS_ENABLED(CONFIG_PCI_MSI)) {
-		write_piu_ior0(node, index, PIUCONFIG0, 0x38076);
 		write_piu_ior0(node, index, MSIADDR, MSIX_MSG_ADDR);
 		for (i = 0; i < 256; i++)
 			write_piu_ior0(node, index, MSICONFIG0 + (i << 7), 0);
@@ -656,8 +655,8 @@ static void handle_dev_int(struct pt_regs *regs)
 	sw64_io_write(node, DEV_INT_CONFIG, config_val);
 }
 
-void handle_chip_irq(unsigned long type, unsigned long vector,
-		     unsigned long irq_arg, struct pt_regs *regs)
+asmlinkage void do_entInt(unsigned long type, unsigned long vector,
+			  unsigned long irq_arg, struct pt_regs *regs)
 {
 	struct pt_regs *old_regs;
 
@@ -738,6 +737,7 @@ void handle_chip_irq(unsigned long type, unsigned long vector,
 	}
 	pr_crit("PC = %016lx PS = %04lx\n", regs->pc, regs->ps);
 }
+EXPORT_SYMBOL(do_entInt);
 
 /*
  * Early fix up the chip3 Root Complex settings

arch/sw_64/include/asm/cacheflush.h

@@ -2,94 +2,12 @@
 #ifndef _ASM_SW64_CACHEFLUSH_H
 #define _ASM_SW64_CACHEFLUSH_H
 
-#include <linux/mm.h>
-#include <asm/hw_init.h>
-
-/* Caches aren't brain-dead on the sw64. */
-#define flush_cache_all()			do { } while (0)
-#define flush_cache_mm(mm)			do { } while (0)
-#define flush_cache_dup_mm(mm)			do { } while (0)
-#define flush_cache_range(vma, start, end)	do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
-#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE	0
-#define flush_dcache_page(page)			do { } while (0)
-#define flush_dcache_mmap_lock(mapping)		do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
-#define flush_cache_vmap(start, end)		do { } while (0)
-#define flush_cache_vunmap(start, end)		do { } while (0)
-
-/* Note that the following two definitions are _highly_ dependent
- * on the contexts in which they are used in the kernel.  I personally
- * think it is criminal how loosely defined these macros are.
+/*
+ * DCache: PIPT
+ * ICache:
+ *	- C3A/B is VIVT with ICTAG, support coherence.
+ *	- C4 is VIPT
  */
-
-/* We need to flush the kernel's icache after loading modules.  The
- * only other use of this macro is in load_aout_interp which is not
- * used on sw64.
-
- * Note that this definition should *not* be used for userspace
- * icache flushing.  While functional, it is _way_ overkill.  The
- * icache is tagged with ASNs and it suffices to allocate a new ASN
- * for the process.
- */
-#ifndef CONFIG_SMP
-static inline void
-flush_icache_range(unsigned long start, unsigned long end)
-{
-	if (icache_is_vivt_no_ictag())
-		imb();
-}
-#define flush_icache_range flush_icache_range
-#else
-extern void smp_imb(void);
-static inline void
-flush_icache_range(unsigned long start, unsigned long end)
-{
-	if (icache_is_vivt_no_ictag())
-		smp_imb();
-}
-#define flush_icache_range flush_icache_range
-#endif
-
-/* We need to flush the userspace icache after setting breakpoints in
- * ptrace.
-
- * Instead of indiscriminately using imb, take advantage of the fact
- * that icache entries are tagged with the ASN and load a new mm context.
- */
-/* ??? Ought to use this in arch/sw_64/kernel/signal.c too.  */
-
-#ifndef CONFIG_SMP
-#include <linux/sched.h>
-
-extern void __load_new_mm_context(struct mm_struct *);
-static inline void
-flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
-			unsigned long addr, int len)
-{
-	if ((vma->vm_flags & VM_EXEC) && icache_is_vivt_no_ictag())
-		imb();
-}
-#define flush_icache_user_page flush_icache_user_page
-#else
-extern void flush_icache_user_page(struct vm_area_struct *vma,
-				    struct page *page,
-				    unsigned long addr, int len);
-#define flush_icache_user_page flush_icache_user_page
-#endif
-
-/* This is used only in __do_fault and do_swap_page.  */
-#define flush_icache_page(vma, page) \
-	flush_icache_user_page((vma), (page), 0, 0)
-
-#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
-do {	\
-	memcpy(dst, src, len); \
-	flush_icache_user_page(vma, page, vaddr, len); \
-} while (0)
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
-	memcpy(dst, src, len)
-
 #include <asm-generic/cacheflush.h>
 
 #endif /* _ASM_SW64_CACHEFLUSH_H */

arch/sw_64/include/asm/clock.h

@@ -44,13 +44,13 @@ struct clk {
 
 int clk_init(void);
 
-int sw64_set_rate(int index, unsigned long rate);
+void sw64_set_rate(unsigned long rate);
 
 struct clk *sw64_clk_get(struct device *dev, const char *id);
 
-unsigned long sw64_clk_get_rate(struct clk *clk);
-
 void sw64_update_clockevents(unsigned long cpu, u32 freq);
 
 void sw64_store_policy(struct cpufreq_policy *policy);
+
+unsigned int __sw64_cpufreq_get(struct cpufreq_policy *policy);
 #endif				/* _ASM_SW64_CLOCK_H */

arch/sw_64/include/asm/hmcall.h

@@ -17,16 +17,12 @@
 #define HMC_wrksp		0x0E
 #define HMC_mtinten		0x0F
 #define HMC_load_mm		0x11
-#define HMC_rdpcbb		0x12
-#define HMC_wrpcbb		0x13
 #define HMC_tbisasn		0x14
 #define HMC_tbivpn		0x19
 #define HMC_ret			0x1A
 #define HMC_wrvpcr		0x29
 #define HMC_wrfen		0x2B
-#define HMC_kvcpucb		0x2C
 #define HMC_sflush		0x2F
-#define HMC_swpctx		0x30
 #define HMC_entervm		0x31
 #define HMC_hcall		0x32
 #define HMC_tbi			0x33
@@ -45,23 +41,27 @@
 
 
 /* 0x80  - 0xBF : User Level HMC routine */
-#define HMC_bpt			0x80
-#define HMC_callsys		0x83
-#define HMC_imb			0x86
+#include <uapi/asm/hmcall.h>
+
+/* Following will be deprecated from user level invocation */
 #define HMC_rwreg		0x87
-#define HMC_rdunique		0x9E
-#define HMC_wrunique		0x9F
 #define HMC_sz_uflush		0xA8
-#define HMC_gentrap		0xAA
-#define HMC_wrperfmon		0xB0
 #define HMC_longtime		0xB1
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
+#include <linux/init.h>
+extern void __init fixup_hmcall(void);
+
 extern void halt(void) __attribute__((noreturn));
 #define __halt() __asm__ __volatile__ ("sys_call %0 #halt" : : "i" (HMC_halt))
 
+#define fpu_enable()						\
+{								\
+	__asm__ __volatile__("sys_call %0" : : "i" (HMC_wrfen));\
+}
+
 #define imb() \
 	__asm__ __volatile__ ("sys_call %0 #imb" : : "i" (HMC_imb) : "memory")
 
@@ -156,8 +156,6 @@ __CALL_HMC_R0(rdksp, unsigned long);
 __CALL_HMC_W1(wrksp, unsigned long);
 
 __CALL_HMC_W2(load_mm, unsigned long, unsigned long);
-__CALL_HMC_R0(rdpcbb, unsigned long);
-__CALL_HMC_W1(wrpcbb, unsigned long);
 
 __CALL_HMC_R0(rdptbr, unsigned long);
 __CALL_HMC_W1(wrptbr, unsigned long);
@@ -166,7 +164,6 @@ __CALL_HMC_RW1(swpipl, unsigned long, unsigned long);
 __CALL_HMC_R0(whami, unsigned long);
 __CALL_HMC_RW1(rdio64, unsigned long, unsigned long);
 __CALL_HMC_RW1(rdio32, unsigned int, unsigned long);
-__CALL_HMC_R0(kvcpucb, unsigned long);
 __CALL_HMC_R0(sleepen, unsigned long);
 __CALL_HMC_R0(mtinten, unsigned long);
 __CALL_HMC_W2(wrent, void*, unsigned long);
@@ -178,6 +175,7 @@ __CALL_HMC_W1(wrtimer, unsigned long);
 __CALL_HMC_RW3(tbivpn, unsigned long, unsigned long, unsigned long, unsigned long);
 __CALL_HMC_RW2(cpuid, unsigned long, unsigned long, unsigned long);
 
+__CALL_HMC_W1(wrtp, unsigned long);
 /*
  * TB routines..
  */
@@ -193,12 +191,28 @@ __CALL_HMC_RW2(cpuid, unsigned long, unsigned long, unsigned long);
 })
 
 #define tbi(x, y)	__tbi(x, __r17 = (y), "1" (__r17))
-#define tbisi(x)	__tbi(1, __r17 = (x), "1" (__r17))
-#define tbisd(x)	__tbi(2, __r17 = (x), "1" (__r17))
-#define tbis(x)		__tbi(3, __r17 = (x), "1" (__r17))
-#define tbiap()		__tbi(-1, /* no second argument */)
+
+/* Invalidate all TLB, only used by hypervisor */
 #define tbia()		__tbi(-2, /* no second argument */)
 
+/* Invalidate TLB for all processes with currnet VPN */
+#define tbivp()		__tbi(-1, /* no second argument */)
+
+/* Invalidate all TLB with current VPN */
+#define tbiv()		__tbi(0, /* no second argument */)
+
+/* Invalidate ITLB of addr with current UPN and VPN */
+#define tbisi(addr)	__tbi(1, __r17 = (addr), "1" (__r17))
+
+/* Invalidate DTLB of addr with current UPN and VPN */
+#define tbisd(addr)	__tbi(2, __r17 = (addr), "1" (__r17))
+
+/* Invalidate TLB of addr with current UPN and VPN */
+#define tbis(addr)	__tbi(3, __r17 = (addr), "1" (__r17))
+
+/* Invalidate all user TLB with current UPN and VPN */
+#define tbiu()		__tbi(4, /* no second argument */)
+
 #endif /* !__ASSEMBLY__ */
 #endif /* __KERNEL__ */
 

arch/sw_64/include/asm/hw_init.h

@@ -18,16 +18,8 @@ struct cache_desc {
 };
 
 struct cpuinfo_sw64 {
-	unsigned long loops_per_jiffy;
 	unsigned long last_asn;
-	int need_new_asn;
-	int asn_lock;
 	unsigned long ipi_count;
-	unsigned long prof_multiplier;
-	unsigned long prof_counter;
-	unsigned char mcheck_expected;
-	unsigned char mcheck_taken;
-	unsigned char mcheck_extra;
 	struct cache_desc icache; /* Primary I-cache */
 	struct cache_desc dcache; /* Primary D or combined I/D cache */
 	struct cache_desc scache; /* Secondary cache */
@@ -45,7 +37,6 @@ struct cpu_desc_t {
 	char vendor_id[16];
 	char model_id[64];
 	unsigned long frequency;
-	__u8 run_mode;
 } __randomize_layout;
 
 #define MAX_NUMSOCKETS		8
@@ -74,6 +65,8 @@ struct memmap_entry {
 };
 
 extern struct cpuinfo_sw64 cpu_data[NR_CPUS];
+extern void store_cpu_data(int cpu);
+
 extern struct cpu_desc_t cpu_desc;
 extern struct socket_desc_t socket_desc[MAX_NUMSOCKETS];
 extern int memmap_nr;
@@ -89,12 +82,11 @@ static inline unsigned long get_cpu_freq(void)
 	return cpu_desc.frequency;
 }
 
-static inline bool icache_is_vivt_no_ictag(void)
+static inline void update_cpu_freq(unsigned long freq)
 {
-	/*
-	 * Icache of C3B is vivt with ICtag. C4 will be vipt.
-	 */
-	return (cpu_desc.arch_var == 0x3 && cpu_desc.arch_rev == 0x1);
+	freq = freq * 1000000;
+	if (cpu_desc.frequency != freq)
+		cpu_desc.frequency = freq;
 }
 
 #define EMUL_FLAG	(0x1UL << 63)

arch/sw_64/include/asm/irq_impl.h

@@ -41,10 +41,8 @@ enum sw64_irq_type {
 extern struct irqaction timer_irqaction;
 extern void init_rtc_irq(irq_handler_t handler);
 extern void handle_irq(int irq);
-extern void handle_ipi(struct pt_regs *);
+extern void handle_ipi(struct pt_regs *regs);
 extern void __init sw64_init_irq(void);
 extern irqreturn_t timer_interrupt(int irq, void *dev);
-extern void handle_chip_irq(unsigned long type, unsigned long vector,
-			    unsigned long irq_arg, struct pt_regs *regs);
 
 #endif

arch/sw_64/include/asm/mmu_context.h

@@ -13,38 +13,14 @@
 #include <asm/io.h>
 
 /*
- * Force a context reload. This is needed when we change the page
- * table pointer or when we update the ASN of the current process.
+ * Load a mm context. This is needed when we change the page
+ * table pointer(CSR:PTBR) or when we update the ASID.
+ *
  */
-
-static inline unsigned long
-__reload_thread(struct pcb_struct *pcb)
-{
-	register unsigned long a0 __asm__("$16");
-	register unsigned long v0 __asm__("$0");
-
-	a0 = virt_to_phys(pcb);
-	__asm__ __volatile__(
-		"sys_call %2 #__reload_thread"
-		: "=r"(v0), "=r"(a0)
-		: "i"(HMC_swpctx), "r"(a0)
-		: "$1", "$22", "$23", "$24", "$25");
-
-	return v0;
-}
-
 #define load_asn_ptbr   load_mm
 
 /*
- * The maximum ASN's the processor supports.
- *
- * If a processor implements address space numbers (ASNs), and the old
- * PTE has the Address Space Match (ASM) bit clear (ASNs in use) and
- * the Valid bit set, then entries can also effectively be made coherent
- * by assigning a new, unused ASN to the currently running process and
- * not reusing the previous ASN before calling the appropriate HMcode
- * routine to invalidate the translation buffer (TB).
- *
+ * The maximum ASN's the processor supports. ASN is called ASID too.
  */
 
 #ifdef CONFIG_SUBARCH_C3B
@@ -60,12 +36,7 @@ __reload_thread(struct pcb_struct *pcb)
  */
 
 #include <asm/hw_init.h>
-#ifdef CONFIG_SMP
 #define cpu_last_asn(cpuid)	(cpu_data[cpuid].last_asn)
-#else
-extern unsigned long last_asn;
-#define cpu_last_asn(cpuid)	last_asn
-#endif /* CONFIG_SMP */
 
 #define ASN_FIRST_VERSION	(1UL << WIDTH_HARDWARE_ASN)
 #define HARDWARE_ASN_MASK	((1UL << WIDTH_HARDWARE_ASN) - 1)
@@ -77,7 +48,7 @@ extern unsigned long last_asn;
  * need to do "p->mm->context = 0".
  *
  * If we need more ASN's than the processor has, we invalidate the old
- * user TLB's (tbiap()) and start a new ASN version. That will automatically
+ * user TLB's (tbivp()) and start a new ASN version. That will automatically
  * force a new asn for any other processes the next time they want to
  * run.
  */
@@ -89,7 +60,7 @@ __get_new_mm_context(struct mm_struct *mm, long cpu)
 	unsigned long next = asn + 1;
 
 	if ((asn & HARDWARE_ASN_MASK) >= HARDWARE_ASN_MASK) {
-		tbiap();
+		tbivp();
 		next = (asn & ~HARDWARE_ASN_MASK) + ASN_FIRST_VERSION;
 	}
 	cpu_last_asn(cpu) = next;
@@ -97,18 +68,13 @@ __get_new_mm_context(struct mm_struct *mm, long cpu)
 }
 
 static inline void
-switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm,
-	  struct task_struct *next)
+switch_mm_irqs_off(struct mm_struct *prev_mm, struct mm_struct *next_mm,
+		   struct task_struct *next)
 {
 	/* Check if our ASN is of an older version, and thus invalid. */
-	unsigned long asn;
-	unsigned long mmc;
+	unsigned long asn, mmc, ptbr;
 	long cpu = smp_processor_id();
 
-#ifdef CONFIG_SMP
-	cpu_data[cpu].asn_lock = 1;
-	barrier();
-#endif
 	asn = cpu_last_asn(cpu);
 	mmc = next_mm->context.asid[cpu];
 	if ((mmc ^ asn) & ~HARDWARE_ASN_MASK) {
@@ -116,50 +82,31 @@ switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm,
 		mmc = __get_new_mm_context(next_mm, cpu);
 		next_mm->context.asid[cpu] = mmc;
 	}
-#ifdef CONFIG_SMP
-	else
-		cpu_data[cpu].need_new_asn = 1;
-#endif
 
 	/*
-	 * Always update the PCB ASN.  Another thread may have allocated
-	 * a new mm->context (via flush_tlb_mm) without the ASN serial
+	 * Update CSR:UPN and CSR:PTBR. Another thread may have allocated
+	 * a new mm->context[asid] (via flush_tlb_mm) without the ASN serial
 	 * number wrapping.  We have no way to detect when this is needed.
 	 */
-	task_thread_info(next)->pcb.asn = mmc & HARDWARE_ASN_MASK;
-	/*
-	 * Always update the PCB PTBR. If next is kernel thread, it must
-	 * update PTBR. If next is user process, it's ok to update PTBR.
-	 */
-	task_thread_info(next)->pcb.ptbr = virt_to_pfn(next_mm->pgd);
-	load_asn_ptbr(task_thread_info(next)->pcb.asn, task_thread_info(next)->pcb.ptbr);
+	asn = mmc & HARDWARE_ASN_MASK;
+	ptbr = virt_to_pfn(next_mm->pgd);
+	load_asn_ptbr(asn, ptbr);
 }
 
-extern void __load_new_mm_context(struct mm_struct *);
-
-#ifdef CONFIG_SMP
-#define check_mmu_context()					\
-do {								\
-	int cpu = smp_processor_id();				\
-	cpu_data[cpu].asn_lock = 0;				\
-	barrier();						\
-	if (cpu_data[cpu].need_new_asn) {			\
-		struct mm_struct *mm = current->active_mm;	\
-		cpu_data[cpu].need_new_asn = 0;			\
-		if (!mm->context.asid[cpu])			\
-			__load_new_mm_context(mm);		\
-	}							\
-} while (0)
-#else
-#define check_mmu_context()  do { } while (0)
-#endif
+#define switch_mm_irqs_off switch_mm_irqs_off
 
-static inline void activate_mm(struct mm_struct *prev_mm,
-			       struct mm_struct *next_mm)
+static inline void
+switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm,
+	  struct task_struct *tsk)
 {
-	__load_new_mm_context(next_mm);
+	unsigned long flags;
+
+	local_irq_save(flags);
+	switch_mm_irqs_off(prev_mm, next_mm, tsk);
+	local_irq_restore(flags);
 }
 
+#define activate_mm(prev, next) switch_mm(prev, next, current)
 #define deactivate_mm(tsk, mm)	do { } while (0)
 
 static inline int init_new_context(struct task_struct *tsk,
@@ -169,8 +116,6 @@ static inline int init_new_context(struct task_struct *tsk,
 
 	for_each_possible_cpu(i)
 		mm->context.asid[i] = 0;
-	if (tsk != current)
-		task_thread_info(tsk)->pcb.ptbr = virt_to_pfn(mm->pgd);
 	return 0;
 }
 
@@ -182,7 +127,6 @@ static inline void destroy_context(struct mm_struct *mm)
 static inline void enter_lazy_tlb(struct mm_struct *mm,
 				  struct task_struct *tsk)
 {
-	task_thread_info(tsk)->pcb.ptbr = virt_to_pfn(mm->pgd);
 }
 
 static inline int arch_dup_mmap(struct mm_struct *oldmm,

arch/sw_64/include/asm/ptrace.h

@@ -40,12 +40,7 @@ struct pt_regs {
 	unsigned long r26;
 	unsigned long r27;
 	unsigned long r28;
-	unsigned long hae;
-/* JRP - These are the values provided to a0-a2 by HMcode */
-	unsigned long trap_a0;
-	unsigned long trap_a1;
-	unsigned long trap_a2;
-/* These are saved by HMcode: */
+	/* These are saved by HMcode: */
 	unsigned long ps;
 	unsigned long pc;
 	unsigned long gp;
@@ -54,7 +49,6 @@ struct pt_regs {
 	unsigned long r18;
 };
 
-#define arch_has_single_step()		(1)
 #define user_mode(regs) (((regs)->ps & 8) != 0)
 #define instruction_pointer(regs) ((regs)->pc)
 #define profile_pc(regs) instruction_pointer(regs)

arch/sw_64/include/asm/signal.h

@@ -14,9 +14,11 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
-#ifdef CONFIG_OLD_SIGACTION
-#define __ARCH_HAS_SA_RESTORER
-#endif
+struct odd_sigaction {
+	__sighandler_t	sa_handler;
+	old_sigset_t	sa_mask;
+	int		sa_flags;
+};
 
 #include <asm/sigcontext.h>
 #endif

arch/sw_64/include/asm/suspend.h

@@ -39,7 +39,7 @@ struct processor_state {
 	struct callee_saved_fpregs fpregs;
 	unsigned long fpcr;
 #ifdef CONFIG_HIBERNATION
-	struct pcb_struct pcb;
+	unsigned long sp;
 	struct vcpucb vcb;
 #endif
 };

arch/sw_64/include/asm/switch_to.h

@@ -6,27 +6,39 @@
 
 extern void __fpstate_save(struct task_struct *save_to);
 extern void __fpstate_restore(struct task_struct *restore_from);
-extern struct task_struct *__switch_to(unsigned long pcb,
-		struct task_struct *prev, struct task_struct *next);
+extern struct task_struct *__switch_to(struct task_struct *prev,
+				       struct task_struct *next);
 extern void restore_da_match_after_sched(void);
 
-static inline void fpstate_save(struct task_struct *task)
+static inline void aux_save(struct task_struct *task)
 {
-	if (likely(!(task->flags & PF_KTHREAD)))
+	struct pcb_struct *pcb;
+
+	if (likely(!(task->flags & PF_KTHREAD))) {
+		pcb = &task_thread_info(task)->pcb;
+		pcb->usp = rdusp();
+		pcb->tp = rtid();
 		__fpstate_save(task);
+	}
 }
 
-static inline void fpstate_restore(struct task_struct *task)
+static inline void aux_restore(struct task_struct *task)
 {
-	if (likely(!(task->flags & PF_KTHREAD)))
+	struct pcb_struct *pcb;
+
+	if (likely(!(task->flags & PF_KTHREAD))) {
+		pcb = &task_thread_info(task)->pcb;
+		wrusp(pcb->usp);
+		wrtp(pcb->tp);
 		__fpstate_restore(task);
+	}
 }
 
 static inline void __switch_to_aux(struct task_struct *prev,
 				   struct task_struct *next)
 {
-	fpstate_save(prev);
-	fpstate_restore(next);
+	aux_save(prev);
+	aux_restore(next);
 }
 
 
@@ -34,10 +46,8 @@ static inline void __switch_to_aux(struct task_struct *prev,
 do {									\
 	struct task_struct *__prev = (prev);				\
 	struct task_struct *__next = (next);				\
-	__u64 __nextpcb = virt_to_phys(&task_thread_info(__next)->pcb);	\
 	__switch_to_aux(__prev, __next);				\
-	(last) = __switch_to(__nextpcb, __prev, __next);		\
-	check_mmu_context();						\
+	(last) = __switch_to(__prev, __next);				\
 } while (0)
 
 

arch/sw_64/include/asm/thread_info.h

@@ -15,13 +15,8 @@ typedef struct {
 
 
 struct pcb_struct {
-	unsigned long ksp;
 	unsigned long usp;
-	unsigned long ptbr;
-	unsigned int pcc;
-	unsigned int asn;
-	unsigned long unique;
-	unsigned long flags;
+	unsigned long tp;
 	unsigned long da_match, da_mask;
 	unsigned long dv_match, dv_mask;
 	unsigned long dc_ctl;
@@ -39,14 +34,19 @@ struct thread_info {
 	int			preempt_count;	/* 0 => preemptible, <0 => BUG */
 	unsigned int		status;		/* thread-synchronous flags */
 
-	int bpt_nsaved;
-	unsigned long bpt_addr[2];		/* breakpoint handling  */
-	unsigned int bpt_insn[2];
 #ifdef CONFIG_DYNAMIC_FTRACE
 	unsigned long		dyn_ftrace_addr;
 #endif
 };
 
+static __always_inline u64 rtid(void)
+{
+	u64 val;
+
+	asm volatile("rtid %0" : "=r" (val) : :);
+	return val;
+}
+
 /*
  * Macros/functions for gaining access to the thread information structure.
  */

arch/sw_64/include/asm/tlbflush.h

@@ -8,13 +8,26 @@
 #include <asm/pgalloc.h>
 #include <asm/hw_init.h>
 #include <asm/hmcall.h>
-
-extern void __load_new_mm_context(struct mm_struct *);
-
+#include <asm/mmu_context.h>
 
 static inline void flush_tlb_current(struct mm_struct *mm)
 {
-	__load_new_mm_context(mm);
+	unsigned long mmc, asn, ptbr, flags;
+
+	local_irq_save(flags);
+
+	mmc = __get_new_mm_context(mm, smp_processor_id());
+	mm->context.asid[smp_processor_id()] = mmc;
+
+	/*
+	 * Force a new ASN for a task. Note that there is no way to
+	 * write UPN only now, so call load_asn_ptbr here.
+	 */
+	asn = mmc & HARDWARE_ASN_MASK;
+	ptbr = virt_to_pfn(mm->pgd);
+	load_asn_ptbr(asn, ptbr);
+
+	local_irq_restore(flags);
 }
 
 /*
@@ -27,12 +40,10 @@ static inline void flush_tlb_current_page(struct mm_struct *mm,
 					  struct vm_area_struct *vma,
 					  unsigned long addr)
 {
-	if (vma->vm_flags & VM_EXEC) {
-		tbi(3, addr);
-		if (icache_is_vivt_no_ictag())
-			imb();
-	} else
-		tbi(2, addr);
+	if (vma->vm_flags & VM_EXEC)
+		tbis(addr);
+	else
+		tbisd(addr);
 }
 
 
@@ -65,7 +76,7 @@ static inline void flush_tlb_other(struct mm_struct *mm)
  */
 static inline void flush_tlb_all(void)
 {
-	tbia();
+	tbiv();
 }
 
 /* Flush a specified user mapping.  */

arch/sw_64/include/asm/uaccess.h

@@ -292,6 +292,8 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long len)
 {
 	return __copy_user((__force void *)to, from, len);
 }
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
 
 extern long __clear_user(void __user *to, long len);
 

arch/sw_64/include/asm/vcpu.h

@@ -32,7 +32,7 @@ struct vcpucb {
 	unsigned long vcpu_irq_disabled;
 	unsigned long vcpu_irq;
 	unsigned long ptbr;
-	unsigned long int_stat0;
+	unsigned long tid;
 	unsigned long int_stat1;
 	unsigned long int_stat2;
 	unsigned long int_stat3;

arch/sw_64/include/uapi/asm/hmcall.h

@@ -7,8 +7,10 @@
 #define HMC_bpt			0x80
 #define HMC_callsys		0x83
 #define HMC_imb			0x86
-#define HMC_rdunique		0x9E
-#define HMC_wrunique		0x9F
+#define HMC_rdtp		0x9E
+#define HMC_wrtp		0x9F
+#define HMC_rdunique		HMC_rdtp
+#define HMC_wrunique		HMC_wrtp
 #define HMC_gentrap		0xAA
 #define HMC_wrperfmon		0xB0
 

arch/sw_64/include/uapi/asm/kvm.h

@@ -5,7 +5,7 @@
 /*
  * KVM SW specific structures and definitions.
  */
-#define SWVM_IRQS 64
+#define SWVM_IRQS 256
 enum SW64_KVM_IRQ {
 	SW64_KVM_IRQ_IPI = 27,
 	SW64_KVM_IRQ_TIMER = 9,

arch/sw_64/include/uapi/asm/ptrace.h

@@ -36,7 +36,8 @@ struct user_fpsimd_state {
 #define FPREG_END		62
 #define FPCR			63
 #define PC			64
-#define UNIQUE			65
+#define TP			65
+#define UNIQUE			TP
 #define VECREG_BASE		67
 #define VECREG_END		161
 #define F31_V1			98

arch/sw_64/include/uapi/asm/sigcontext.h

@@ -2,15 +2,13 @@
 #ifndef _UAPI_ASM_SW64_SIGCONTEXT_H
 #define _UAPI_ASM_SW64_SIGCONTEXT_H
 
+/*
+ * Signal context structure
+ *
+ * The context is saved before a signal handler is invoked, and it is
+ * restored by sys_sigreturn / sys_rt_sigreturn.
+ */
 struct sigcontext {
-	/*
-	 * What should we have here? I'd probably better use the same
-	 * stack layout as DEC Unix, just in case we ever want to try
-	 * running their binaries..
-	 *
-	 * This is the basic layout, but I don't know if we'll ever
-	 * actually fill in all the values..
-	 */
 	long		sc_onstack;
 	long		sc_mask;
 	long		sc_pc;
@@ -19,6 +17,7 @@ struct sigcontext {
 	long		sc_ownedfp;
 	long		sc_fpregs[128];	/* SIMD-FP */
 	unsigned long	sc_fpcr;
+	/* TODO: Following are unused, to be removed and synced with libc */
 	unsigned long	sc_fp_control;
 	unsigned long	sc_reserved1, sc_reserved2;
 	unsigned long	sc_ssize;

arch/sw_64/kernel/Makefile

@@ -17,7 +17,7 @@ obj-y    := entry.o fpu.o traps.o process.o sys_sw64.o irq.o \
 	    irq_sw64.o signal.o setup.o ptrace.o time.o \
 	    systbls.o dup_print.o tc.o timer.o \
 	    insn.o early_init.o topology.o cacheinfo.o \
-	    vdso.o vdso/
+	    vdso.o vdso/ hmcall.o
 
 obj-$(CONFIG_ACPI) += acpi.o
 obj-$(CONFIG_STACKTRACE) += stacktrace.o
@@ -31,9 +31,13 @@ obj-$(CONFIG_HIBERNATION) += hibernate_asm.o hibernate.o
 obj-$(CONFIG_AUDIT)     += audit.o
 obj-$(CONFIG_PCI) += pci_common.o
 obj-$(CONFIG_RELOCATABLE)   += relocate.o
-obj-$(CONFIG_DEBUG_FS)	+= segvdbg.o bindvcpu.o
+obj-$(CONFIG_DEBUG_FS)	+= segvdbg.o
 obj-$(CONFIG_JUMP_LABEL) += jump_label.o
 
+ifeq ($(CONFIG_DEBUG_FS)$(CONFIG_NUMA),yy)
+obj-y += bindvcpu.o
+endif
+
 ifndef CONFIG_PCI
 obj-y += pci-noop.o
 endif

arch/sw_64/kernel/asm-offsets.c

@@ -33,9 +33,8 @@ void foo(void)
 	OFFSET(PSTATE_FPREGS, processor_state, fpregs);
 	OFFSET(PSTATE_FPCR, processor_state, fpcr);
 #ifdef CONFIG_HIBERNATION
-	OFFSET(PSTATE_PCB, processor_state, pcb);
+	OFFSET(PSTATE_SP, processor_state, sp);
 #endif
-	OFFSET(PCB_KSP, pcb_struct, ksp);
 	OFFSET(PBE_ADDR, pbe, address);
 	OFFSET(PBE_ORIG_ADDR, pbe, orig_address);
 	OFFSET(PBE_NEXT, pbe, next);
@@ -89,9 +88,6 @@ void foo(void)
 	DEFINE(PT_REGS_R26, offsetof(struct pt_regs, r26));
 	DEFINE(PT_REGS_R27, offsetof(struct pt_regs, r27));
 	DEFINE(PT_REGS_R28, offsetof(struct pt_regs, r28));
-	DEFINE(PT_REGS_TRAP_A0, offsetof(struct pt_regs, trap_a0));
-	DEFINE(PT_REGS_TRAP_A1, offsetof(struct pt_regs, trap_a1));
-	DEFINE(PT_REGS_TRAP_A2, offsetof(struct pt_regs, trap_a2));
 	DEFINE(PT_REGS_PS, offsetof(struct pt_regs, ps));
 	DEFINE(PT_REGS_PC, offsetof(struct pt_regs, pc));
 	DEFINE(PT_REGS_GP, offsetof(struct pt_regs, gp));
@@ -222,4 +218,5 @@ void foo(void)
 	OFFSET(TASK_THREAD_S5, task_struct, thread.s[5]);
 	OFFSET(TASK_THREAD_S6, task_struct, thread.s[6]);
 	BLANK();
+	DEFINE(ASM_THREAD_SIZE, THREAD_SIZE);
 }

arch/sw_64/kernel/bindvcpu.c

@@ -11,7 +11,8 @@
 #include <linux/uaccess.h>
 #include <asm/debug.h>
 
-extern bool bind_vcpu_enabled;
+__read_mostly bool bind_vcpu_enabled;
+EXPORT_SYMBOL(bind_vcpu_enabled);
 
 static int __init bind_vcpu_init(void)
 {

arch/sw_64/kernel/clock.c

@@ -109,14 +109,21 @@ struct clk *sw64_clk_get(struct device *dev, const char *id)
 }
 EXPORT_SYMBOL(sw64_clk_get);
 
-unsigned long sw64_clk_get_rate(struct clk *clk)
+unsigned int __sw64_cpufreq_get(struct cpufreq_policy *policy)
 {
-	if (!clk)
-		return 0;
+	int i;
+	u64 val;
 
-	return (unsigned long)clk->rate;
+	val = sw64_io_read(0, CLK_CTL);
+	val = val >> CORE_PLL2_CFG_SHIFT;
+
+	for (i = 0; i < sizeof(cpu_freq)/sizeof(int); i++) {
+		if (cpu_freq[val] == cpu_freq[i])
+			return cpu_freq[i];
+	}
+	return 0;
 }
-EXPORT_SYMBOL(sw64_clk_get_rate);
+EXPORT_SYMBOL(__sw64_cpufreq_get);
 
 void sw64_store_policy(struct cpufreq_policy *policy)
 {
@@ -124,15 +131,17 @@ void sw64_store_policy(struct cpufreq_policy *policy)
 }
 EXPORT_SYMBOL_GPL(sw64_store_policy);
 
-int sw64_set_rate(int index, unsigned long rate)
+void sw64_set_rate(unsigned long rate)
 {
 	unsigned int i, val;
+	int index = -1;
 
 	rate /= 1000000;
 
 	for (i = 0; i < sizeof(cpu_freq)/sizeof(int); i++) {
 		if (rate == cpu_freq[i]) {
 			index = i;
+			update_cpu_freq(cpu_freq[i]);
 			break;
 		}
 	}
@@ -178,7 +187,5 @@ int sw64_set_rate(int index, unsigned long rate)
 	/* LV1 select PLL0/PLL1 */
 	sw64_io_write(0, CLU_LV1_SEL, CLK_LV1_SEL_MUXB | CLK_LV1_SEL_PRT);
 	sw64_io_write(1, CLU_LV1_SEL, CLK_LV1_SEL_MUXB | CLK_LV1_SEL_PRT);
-
-	return index;
 }
 EXPORT_SYMBOL_GPL(sw64_set_rate);

arch/sw_64/kernel/early_init.c

@@ -23,6 +23,7 @@ static void __init sw64_setup_platform_ops(void)
 
 asmlinkage __visible void __init sw64_start_kernel(void)
 {
+	fixup_hmcall();
 	sw64_setup_chip_ops();
 	sw64_setup_platform_ops();
 	sw64_platform->ops_fixup();

arch/sw_64/kernel/entry.S

@@ -14,11 +14,10 @@
 /*
  * This defines the normal kernel pt-regs layout.
  *
- * regs 9-15 preserved by C code
+ * regs 9-15 preserved by C code, saving to pt_regs will make
+ * them easier to be accessed in an unified way.
  * regs 16-18 saved by HMcode
  * regs 29-30 saved and set up by HMcode
- * JRP - Save regs 16-18 in a special area of the stack, so that
- * the hmcode-provided values are available to the signal handler.
  */
 
 	.macro SAVE_COMMON_REGS
@@ -42,9 +41,6 @@
 	stl	$25, PT_REGS_R25($sp)
 	stl	$26, PT_REGS_R26($sp)
 	stl	$27, PT_REGS_R27($sp)
-	stl	$16, PT_REGS_TRAP_A0($sp)
-	stl	$17, PT_REGS_TRAP_A1($sp)
-	stl	$18, PT_REGS_TRAP_A2($sp)
 	.endm
 
 	.macro RESTORE_COMMON_REGS
@@ -384,11 +380,10 @@ $syscall_trace_failed:
  * Integer register context switch
  * The callee-saved registers must be saved and restored.
  *
- *   a0: physical address of next task's pcb, used by hmcode
- *   a1: previous task_struct (must be preserved across the switch)
- *   a2: next task_struct
+ *   a0: previous task_struct (must be preserved across the switch)
+ *   a1: next task_struct
  *
- * The value of a1  must be preserved by this function, as that's how
+ * The value of a0  must be preserved by this function, as that's how
  * arguments are passed to schedule_tail.
  */
 	.align 4
@@ -397,33 +392,28 @@ $syscall_trace_failed:
 __switch_to:
 	.prologue 0
 	/* Save context into prev->thread */
-	stl	$26, TASK_THREAD_RA($17)
-	stl	$30, TASK_THREAD_SP($17)
-	stl	$9, TASK_THREAD_S0($17)
-	stl	$10, TASK_THREAD_S1($17)
-	stl	$11, TASK_THREAD_S2($17)
-	stl	$12, TASK_THREAD_S3($17)
-	stl	$13, TASK_THREAD_S4($17)
-	stl	$14, TASK_THREAD_S5($17)
-	stl	$15, TASK_THREAD_S6($17)
+	stl	$26, TASK_THREAD_RA($16)
+	stl	$30, TASK_THREAD_SP($16)
+	stl	$9, TASK_THREAD_S0($16)
+	stl	$10, TASK_THREAD_S1($16)
+	stl	$11, TASK_THREAD_S2($16)
+	stl	$12, TASK_THREAD_S3($16)
+	stl	$13, TASK_THREAD_S4($16)
+	stl	$14, TASK_THREAD_S5($16)
+	stl	$15, TASK_THREAD_S6($16)
 	/* Restore context from next->thread */
-	ldl	$26, TASK_THREAD_RA($18)
-	ldl	$9, TASK_THREAD_S0($18)
-	ldl	$10, TASK_THREAD_S1($18)
-	ldl	$11, TASK_THREAD_S2($18)
-	ldl	$12, TASK_THREAD_S3($18)
-	ldl	$13, TASK_THREAD_S4($18)
-	ldl	$14, TASK_THREAD_S5($18)
-	ldl	$15, TASK_THREAD_S6($18)
-	sys_call HMC_swpctx
-	/*
-	 * SP has been saved and restored by HMC_swpctx,
-	 * and restore it again here for future expansion.
-	 */
-	ldl     $30, TASK_THREAD_SP($18)
+	ldl	$26, TASK_THREAD_RA($17)
+	ldl     $30, TASK_THREAD_SP($17)
+	ldl	$9, TASK_THREAD_S0($17)
+	ldl	$10, TASK_THREAD_S1($17)
+	ldl	$11, TASK_THREAD_S2($17)
+	ldl	$12, TASK_THREAD_S3($17)
+	ldl	$13, TASK_THREAD_S4($17)
+	ldl	$14, TASK_THREAD_S5($17)
+	ldl	$15, TASK_THREAD_S6($17)
 	ldi	$8, 0x3fff
 	bic	$sp, $8, $8
-	mov	$17, $0
+	mov	$16, $0
 	ret
 	.end __switch_to
 
@@ -436,8 +426,7 @@ __switch_to:
 	.ent ret_from_fork
 ret_from_fork:
 	ldi	$26, ret_from_sys_call
-	mov	$17, $16
-	jmp	$31, schedule_tail
+	call	$31, schedule_tail
 	.end ret_from_fork
 
 /*
@@ -447,7 +436,6 @@ ret_from_fork:
 	.globl ret_from_kernel_thread
 	.ent ret_from_kernel_thread
 ret_from_kernel_thread:
-	mov	$17, $16
 	call	$26, schedule_tail
 	mov	$9, $27
 	mov	$10, $16

arch/sw_64/kernel/head.S

@@ -24,7 +24,7 @@ __start:
 	/* We need to get current_task_info loaded up...  */
 	ldi	$8, init_thread_union
 	/* ... and find our stack ... */
-	ldi	$30, 0x4000 - PT_REGS_SIZE($8)
+	ldi	$30, ASM_THREAD_SIZE($8)
 	/* ... and then we can clear bss data.  */
 	ldi	$2, __bss_start
 	ldi	$3, __bss_stop
@@ -51,7 +51,7 @@ __start:
 	ldl	$29, 0($30)
 	addl	$29, $0, $29
 	/* Repoint the sp into the new kernel image */
-	ldi	$30, 0x4000 - PT_REGS_SIZE($8)
+	ldi	$30, ASM_THREAD_SIZE($8)
 #endif
 	/* ... and then we can start the kernel.  */
 	call	$26, sw64_start_kernel
@@ -71,24 +71,20 @@ __smp_callin:
 	br	$27, 2f		# we copy this from above "br $27 1f"
 2:	ldgp	$29, 0($27)	# First order of business, load the GP.
 
-	subl	$31, 2, $16
+	bis	$31, $31, $16	# invalidate all TLB with current VPN
 	sys_call HMC_tbi
 
 	sys_call HMC_whami	# Get hard cid
 
-	sll	$0, 2, $0
 	ldi	$1, __rcid_to_cpu
-	addl	$1, $0, $1
+	s4addl	$0, $1, $1
 	ldw	$0, 0($1)	# Get logical cpu number
 
-	sll	$0, 3, $0
-	ldi	$1, tidle_pcb
-	addl	$1, $0, $1
-	ldl	$16, 0($1)	# Get PCBB of idle thread
+	ldi	$2, tidle_ksp
+	s8addl	$0, $2, $2
+	ldl	$30, 0($2)	# Get ksp of idle thread
 
-	sys_call HMC_swpctx
-	ldi	$8, 0x3fff	# Find "current".
-	bic	$30, $8, $8
+	ldi	$8, -ASM_THREAD_SIZE($30) # Find "current"
 
 	call	$26, smp_callin
 	sys_call HMC_halt

arch/sw_64/kernel/hibernate.c

@@ -14,7 +14,7 @@ void save_processor_state(void)
 
 	vcb->ksp = rdksp();
 	vcb->usp = rdusp();
-	vcb->pcbb = rdpcbb();
+	vcb->tid = rtid();
 	vcb->ptbr = rdptbr();
 }
 
@@ -24,11 +24,10 @@ void restore_processor_state(void)
 
 	wrksp(vcb->ksp);
 	wrusp(vcb->usp);
-	wrpcbb(vcb->pcbb);
+	wrtp(vcb->tid);
 	wrptbr(vcb->ptbr);
 	sflush();
-	tbia();
-	imb();
+	tbiv();
 }
 
 int swsusp_arch_resume(void)

arch/sw_64/kernel/hibernate_asm.S

@@ -30,8 +30,7 @@ ENTRY(swsusp_arch_suspend)
 	rfpcr	$f0
 	fstd	$f0, PSTATE_FPCR($16)
 
-	ldi	$1, PSTATE_PCB($16)
-	stl	sp, PCB_KSP($1)
+	stl	sp, PSTATE_SP($16)
 	call	swsusp_save
 	ldi	$16, hibernate_state
 	ldi	$1, PSTATE_REGS($16)
@@ -112,8 +111,7 @@ $hibernate_setfpec_over:
 	vldd	$f8, CALLEE_F8($1)
 	vldd	$f9, CALLEE_F9($1)
 
-	ldi	$1, PSTATE_PCB($16)
-	ldl	sp, PCB_KSP($1)
+	ldl	sp, PSTATE_SP($16)
 
 	ldi	$8, 0x3fff
 	bic	sp, $8, $8

arch/sw_64/kernel/hmcall.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/sw_64/kernel/hmcall.c
+ *
+ * Copyright (C) 2022 WXIAT
+ * Author: He Sheng
+ */
+
+#include <asm/hmcall.h>
+#include <asm/page.h>
+
+#define A0(func)	(((HMC_##func & 0xFF) >> 6) & 0x1)
+#define A1(func)	((((HMC_##func & 0xFF)>>6) & 0x2) >> 1)
+#define A2(func)	((HMC_##func & 0x3F) << 7)
+
+#define T(func)		((A0(func) ^ A1(func)) & 0x1)
+#define B0(func)	((T(func) | A0(func)) << 13)
+#define B1(func)	(((~T(func) & 1) | A1(func)) << 14)
+
+#define PRI_BASE	0x10000UL
+
+#define HMCALL_ENTRY(func)	(PRI_BASE | B1(func) | B0(func) | A2(func))
+
+
+static inline void fixup_rdtp(void)
+{
+	unsigned int *entry = __va(HMCALL_ENTRY(rdtp));
+
+	entry[0] = 0x181ffec7;	/* pri_rcsr $0, CSR__TID */
+	entry[1] = 0x1ee00000;	/* pri_ret $23 */
+}
+
+static inline void fixup_wrtp(void)
+{
+	unsigned int *entry = __va(HMCALL_ENTRY(wrtp));
+
+	entry[0] = 0x1a1fffc7;	/* pri_wcsr $16, CSR__TID */
+	entry[1] = 0x1ee00000;	/* pri_ret $23 */
+}
+
+void __init fixup_hmcall(void)
+{
+#if defined(CONFIG_SUBARCH_C3A) || defined(CONFIG_SUBARCH_C3B)
+	fixup_rdtp();
+	fixup_wrtp();
+#endif
+}
+
+#undef A0
+#undef A1
+#undef A2
+#undef T
+#undef B0
+#undef B1

arch/sw_64/kernel/irq_sw64.c

@@ -9,15 +9,6 @@
 #include <asm/dma.h>
 #include <asm/irq_impl.h>
 
-asmlinkage void
-do_entInt(unsigned long type, unsigned long vector,
-	  unsigned long irq_arg, struct pt_regs *regs)
-{
-	local_irq_disable();
-	handle_chip_irq(type, vector, irq_arg, regs);
-}
-EXPORT_SYMBOL(do_entInt);
-
 void __init
 init_IRQ(void)
 {

arch/sw_64/kernel/kgdb.c

@@ -95,7 +95,7 @@ struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = {
 
 	{ "pc", 8, offsetof(struct pt_regs, pc)},
 	{ "", 8, -1 },
-	{ "unique", 8, -1},
+	{ "tp", 8, -1},
 };
 
 char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)

arch/sw_64/kernel/machine_kexec.c

@@ -204,9 +204,6 @@ void machine_kexec(struct kimage *image)
 
 	pr_info("Will call new kernel at %08lx\n", image->start);
 	pr_info("Bye ...\n");
-	//flush_cache_all();
-	//sflush();
-	//tbia();
 	smp_wmb();
 	((noretfun_t) reboot_code_buffer)();
 }

arch/sw_64/kernel/pci.c

@@ -614,7 +614,8 @@ void __init sw64_init_arch(void)
 		cpu_num = sw64_chip->get_cpu_num();
 
 		for (node = 0; node < cpu_num; node++) {
-			set_devint_wken(node);
+			if (is_in_host())
+				set_devint_wken(node);
 			rc_enable = sw64_chip_init->pci_init.get_rc_enable(node);
 			if (rc_enable == 0) {
 				printk("PCIe is disabled on node %ld\n", node);

arch/sw_64/kernel/perf_regs.c

@@ -28,6 +28,6 @@ u64 perf_reg_abi(struct task_struct *task)
 void perf_get_regs_user(struct perf_regs *regs_user,
 			struct pt_regs *regs)
 {
-	regs_user->regs = NULL;
-	regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE;
+	regs_user->regs = task_pt_regs(current);
+	regs_user->abi = perf_reg_abi(current);
 }

arch/sw_64/kernel/process.c

@@ -52,7 +52,7 @@ void arch_cpu_idle(void)
 static void common_shutdown_1(void *generic_ptr)
 {
 	struct halt_info *how = (struct halt_info *)generic_ptr;
-	int cpuid = smp_processor_id();
+	int cpuid __maybe_unused = smp_processor_id();
 
 	/* No point in taking interrupts anymore. */
 	local_irq_disable();
@@ -102,17 +102,6 @@ void machine_power_off(void)
 }
 
 
-/* Used by sysrq-p, among others.  I don't believe r9-r15 are ever
- * saved in the context it's used.
- */
-
-void
-show_regs(struct pt_regs *regs)
-{
-	show_regs_print_info(KERN_DEFAULT);
-	dik_show_regs(regs);
-}
-
 /*
  * Re-start a thread when doing execve()
  */
@@ -136,7 +125,7 @@ flush_thread(void)
 	wrfpcr(FPCR_DYN_NORMAL | ieee_swcr_to_fpcr(0));
 
 	/* Clean slate for TLS.  */
-	current_thread_info()->pcb.unique = 0;
+	current_thread_info()->pcb.tp = 0;
 }
 
 void
@@ -146,7 +135,11 @@ release_thread(struct task_struct *dead_task)
 
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 {
-	fpstate_save(src);
+	/*
+	 * aux_save() has to read the current TLS pointer from CSR:TID as it
+	 * may be out-of-sync with the saved value.
+	 */
+	aux_save(src);
 	*dst = *src;
 	return 0;
 }
@@ -167,8 +160,6 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	struct pt_regs *childregs = task_pt_regs(p);
 	struct pt_regs *regs = current_pt_regs();
 
-	childti->pcb.ksp = (unsigned long) childregs;
-	childti->pcb.flags = 7;	/* set FEN, clear everything else */
 	p->thread.sp = (unsigned long) childregs;
 
 	if (unlikely(p->flags & PF_KTHREAD)) {
@@ -180,6 +171,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 		childti->pcb.usp = 0;
 		return 0;
 	}
+
 	/*
 	 * Note: if CLONE_SETTLS is not set, then we must inherit the
 	 * value from the parent, which will have been set by the block
@@ -188,10 +180,11 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	 * application calling fork.
 	 */
 	if (clone_flags & CLONE_SETTLS)
-		childti->pcb.unique = tls;
+		childti->pcb.tp = regs->r20;
 	else
 		regs->r20 = 0;
-	childti->pcb.usp = usp ?: rdusp();
+	if (usp)
+		childti->pcb.usp = usp;
 	*childregs = *regs;
 	childregs->r0 = 0;
 	childregs->r19 = 0;
@@ -214,7 +207,7 @@ void sw64_elf_core_copy_regs(elf_greg_t *dest, struct pt_regs *regs)
 		dest[i] = *(__u64 *)((void *)regs + regoffsets[i]);
 	dest[30] = ti == current_thread_info() ? rdusp() : ti->pcb.usp;
 	dest[31] = regs->pc;
-	dest[32] = ti->pcb.unique;
+	dest[32] = ti->pcb.tp;
 }
 EXPORT_SYMBOL(sw64_elf_core_copy_regs);
 

arch/sw_64/kernel/proto.h

@@ -7,13 +7,9 @@
 #include <asm/pgtable.h>
 #include <asm/sw64io.h>
 
-/* ptrace.c */
-extern int ptrace_set_bpt(struct task_struct *child);
-extern int ptrace_cancel_bpt(struct task_struct *child);
-
 /* traps.c */
-extern void dik_show_regs(struct pt_regs *regs);
-extern void die_if_kernel(char *str, struct pt_regs *regs, long err);
+extern void show_regs(struct pt_regs *regs);
+extern void die(char *str, struct pt_regs *regs, long err);
 
 /* timer.c */
 extern void setup_timer(void);

arch/sw_64/kernel/ptrace.c

@@ -72,7 +72,7 @@ short regoffsets[32] = {
 
 static int pcboff[] = {
 	[USP] = PCB_OFF(usp),
-	[UNIQUE] = PCB_OFF(unique),
+	[TP] = PCB_OFF(tp),
 	[DA_MATCH] = PCB_OFF(da_match),
 	[DA_MASK] = PCB_OFF(da_mask),
 	[DV_MATCH] = PCB_OFF(dv_match),
@@ -154,119 +154,12 @@ put_reg(struct task_struct *task, unsigned long regno, unsigned long data)
 	return 0;
 }
 
-static inline int
-read_int(struct task_struct *task, unsigned long addr, int *data)
-{
-	int copied = access_process_vm(task, addr, data, sizeof(int), FOLL_FORCE);
-
-	return (copied == sizeof(int)) ? 0 : -EIO;
-}
-
-static inline int
-write_int(struct task_struct *task, unsigned long addr, int data)
-{
-	int copied = access_process_vm(task, addr, &data, sizeof(int),
-			FOLL_FORCE | FOLL_WRITE);
-	return (copied == sizeof(int)) ? 0 : -EIO;
-}
-
-/*
- * Set breakpoint.
- */
-int
-ptrace_set_bpt(struct task_struct *child)
-{
-	int displ, i, res, reg_b, nsaved = 0;
-	unsigned int insn, op_code;
-	unsigned long pc;
-
-	pc = get_reg(child, REG_PC);
-	res = read_int(child, pc, (int *)&insn);
-	if (res < 0)
-		return res;
-
-	op_code = insn >> 26;
-	/* br bsr beq bne blt ble bgt bge blbc blbs fbeq fbne fblt fble fbgt fbge */
-	if ((1UL << op_code) & 0x3fff000000000030UL) {
-		/*
-		 * It's a branch: instead of trying to figure out
-		 * whether the branch will be taken or not, we'll put
-		 * a breakpoint at either location.  This is simpler,
-		 * more reliable, and probably not a whole lot slower
-		 * than the alternative approach of emulating the
-		 * branch (emulation can be tricky for fp branches).
-		 */
-		displ = ((s32)(insn << 11)) >> 9;
-		task_thread_info(child)->bpt_addr[nsaved++] = pc + 4;
-		if (displ) /* guard against unoptimized code */
-			task_thread_info(child)->bpt_addr[nsaved++]
-				= pc + 4 + displ;
-		/*call ret jmp*/
-	} else if (op_code >= 0x1 && op_code <= 0x3) {
-		reg_b = (insn >> 16) & 0x1f;
-		task_thread_info(child)->bpt_addr[nsaved++] = get_reg(child, reg_b);
-	} else {
-		task_thread_info(child)->bpt_addr[nsaved++] = pc + 4;
-	}
-
-	/* install breakpoints: */
-	for (i = 0; i < nsaved; ++i) {
-		res = read_int(child, task_thread_info(child)->bpt_addr[i],
-				(int *)&insn);
-		if (res < 0)
-			return res;
-		task_thread_info(child)->bpt_insn[i] = insn;
-		res = write_int(child, task_thread_info(child)->bpt_addr[i],
-				BREAKINST);
-		if (res < 0)
-			return res;
-	}
-	task_thread_info(child)->bpt_nsaved = nsaved;
-	return 0;
-}
-
 /*
- * Ensure no single-step breakpoint is pending.  Returns non-zero
- * value if child was being single-stepped.
- */
-int
-ptrace_cancel_bpt(struct task_struct *child)
-{
-	int i, nsaved = task_thread_info(child)->bpt_nsaved;
-
-	task_thread_info(child)->bpt_nsaved = 0;
-
-	if (nsaved > 2) {
-		printk("%s: bogus nsaved: %d!\n", __func__, nsaved);
-		nsaved = 2;
-	}
-
-	for (i = 0; i < nsaved; ++i) {
-		write_int(child, task_thread_info(child)->bpt_addr[i],
-				task_thread_info(child)->bpt_insn[i]);
-	}
-	return (nsaved != 0);
-}
-
-void user_enable_single_step(struct task_struct *child)
-{
-	/* Mark single stepping.  */
-	task_thread_info(child)->bpt_nsaved = -1;
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
-	ptrace_cancel_bpt(child);
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure the single step bit is not set.
+ * Called by ptrace_detach
  */
 void ptrace_disable(struct task_struct *child)
 {
-	user_disable_single_step(child);
+	/**/
 }
 
 static int gpr_get(struct task_struct *target,
@@ -487,7 +380,7 @@ int do_match(unsigned long address, unsigned long mmcsr, long cause, struct pt_r
 	case MMCSR__DA_MATCH:
 	case MMCSR__DV_MATCH:
 	case MMCSR__DAV_MATCH:
-		dik_show_regs(regs);
+		show_regs(regs);
 
 		if (!(current->ptrace & PT_PTRACED)) {
 			printk(" pid %d %s not be ptraced, return\n", current->pid, current->comm);
@@ -611,10 +504,6 @@ static const struct pt_regs_offset regoffset_table[] = {
 	REG_OFFSET_NAME(r26),
 	REG_OFFSET_NAME(r27),
 	REG_OFFSET_NAME(r28),
-	REG_OFFSET_NAME(hae),
-	REG_OFFSET_NAME(trap_a0),
-	REG_OFFSET_NAME(trap_a1),
-	REG_OFFSET_NAME(trap_a2),
 	REG_OFFSET_NAME(ps),
 	REG_OFFSET_NAME(pc),
 	REG_OFFSET_NAME(gp),

arch/sw_64/kernel/setup.c

@@ -28,9 +28,10 @@
 #include <linux/genalloc.h>
 #include <linux/acpi.h>
 
-#include <asm/sw64_init.h>
 #include <asm/efi.h>
 #include <asm/kvm_cma.h>
+#include <asm/mmu_context.h>
+#include <asm/sw64_init.h>
 
 #include "proto.h"
 #include "pci_impl.h"
@@ -137,6 +138,14 @@ struct screen_info screen_info = {
 };
 EXPORT_SYMBOL(screen_info);
 
+/*
+ * Move global data into per-processor storage.
+ */
+void store_cpu_data(int cpu)
+{
+	cpu_data[cpu].last_asn = ASN_FIRST_VERSION;
+}
+
 #ifdef CONFIG_KEXEC
 
 void *kexec_control_page;
@@ -859,13 +868,12 @@ setup_arch(char **cmdline_p)
 	/* Default root filesystem to sda2.  */
 	ROOT_DEV = Root_SDA2;
 
-	/*
-	 * Identify the flock of penguins.
-	 */
-
 #ifdef CONFIG_SMP
 	setup_smp();
+#else
+	store_cpu_data(0);
 #endif
+
 #ifdef CONFIG_NUMA
 	cpu_set_node();
 #endif

arch/sw_64/kernel/signal.c

@@ -38,6 +38,36 @@ SYSCALL_DEFINE2(odd_sigprocmask, int, how, unsigned long, newmask)
 	return res;
 }
 
+SYSCALL_DEFINE3(odd_sigaction, int, sig,
+		const struct odd_sigaction __user *, act,
+		struct odd_sigaction __user *, oact)
+{
+	struct k_sigaction new_ka, old_ka;
+	old_sigset_t mask;
+	int ret;
+
+	if (act) {
+		if (!access_ok(act, sizeof(*act)) ||
+		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+		    __get_user(mask, &act->sa_mask))
+			return -EFAULT;
+		siginitset(&new_ka.sa.sa_mask, mask);
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		if (!access_ok(oact, sizeof(*oact)) ||
+		    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+		    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+		    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+			return -EFAULT;
+	}
+
+	return ret;
+}
+
 /*
  * Do a signal return; undo the signal stack.
  */
@@ -133,11 +163,6 @@ do_sigreturn(struct sigcontext __user *sc)
 	if (restore_sigcontext(sc, regs))
 		goto give_sigsegv;
 
-	/* Send SIGTRAP if we're single-stepping: */
-	if (ptrace_cancel_bpt(current)) {
-		force_sig_fault(SIGTRAP, TRAP_BRKPT,
-				(void __user *)regs->pc, 0);
-	}
 	return;
 
 give_sigsegv:
@@ -164,11 +189,6 @@ do_rt_sigreturn(struct rt_sigframe __user *frame)
 	if (restore_altstack(&frame->uc.uc_stack))
 		goto give_sigsegv;
 
-	/* Send SIGTRAP if we're single-stepping: */
-	if (ptrace_cancel_bpt(current)) {
-		force_sig_fault(SIGTRAP, TRAP_BRKPT,
-				(void __user *)regs->pc, 0);
-	}
 	return;
 
 give_sigsegv:
@@ -235,10 +255,6 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
 				offsetof(struct user_fpsimd_state, fpcr));
 	err |= __put_user(current->thread.fpstate.fpcr, &sc->sc_fpcr);
 
-	err |= __put_user(regs->trap_a0, &sc->sc_traparg_a0);
-	err |= __put_user(regs->trap_a1, &sc->sc_traparg_a1);
-	err |= __put_user(regs->trap_a2, &sc->sc_traparg_a2);
-
 	return err;
 }
 
@@ -351,19 +367,15 @@ syscall_restart(unsigned long r0, unsigned long r19,
 static void
 do_signal(struct pt_regs *regs, unsigned long r0, unsigned long r19)
 {
-	unsigned long single_stepping = ptrace_cancel_bpt(current);
 	struct ksignal ksig;
 
 	/* This lets the debugger run, ... */
 	if (get_signal(&ksig)) {
-		/* ... so re-check the single stepping. */
-		single_stepping |= ptrace_cancel_bpt(current);
 		/* Whee!  Actually deliver the signal.  */
 		if (r0)
 			syscall_restart(r0, r19, regs, &ksig.ka);
 		handle_signal(&ksig, regs);
 	} else {
-		single_stepping |= ptrace_cancel_bpt(current);
 		if (r0) {
 			switch (regs->r0) {
 			case ERESTARTNOHAND:
@@ -383,8 +395,6 @@ do_signal(struct pt_regs *regs, unsigned long r0, unsigned long r19)
 		}
 		restore_saved_sigmask();
 	}
-	if (single_stepping)
-		ptrace_set_bpt(current);        /* re-set breakpoint */
 }
 
 void

arch/sw_64/kernel/smp.c

@@ -34,7 +34,7 @@ EXPORT_SYMBOL(__cpu_to_rcid);
 int __rcid_to_cpu[NR_CPUS];		/* Map physical to logical */
 EXPORT_SYMBOL(__rcid_to_cpu);
 
-unsigned long tidle_pcb[NR_CPUS];
+void *tidle_ksp[NR_CPUS];
 
 /* State of each CPU */
 DEFINE_PER_CPU(int, cpu_state) = { 0 };
@@ -59,29 +59,6 @@ EXPORT_SYMBOL(smp_num_cpus);
 #define send_sleep_interrupt(cpu)	send_ipi((cpu), II_SLEEP)
 #define send_wakeup_interrupt(cpu)	send_ipi((cpu), II_WAKE)
 
-/*
- * Called by both boot and secondaries to move global data into
- *  per-processor storage.
- */
-static inline void __init
-smp_store_cpu_info(int cpuid)
-{
-	cpu_data[cpuid].loops_per_jiffy = loops_per_jiffy;
-	cpu_data[cpuid].last_asn = ASN_FIRST_VERSION;
-	cpu_data[cpuid].need_new_asn = 0;
-	cpu_data[cpuid].asn_lock = 0;
-}
-
-/*
- * Ideally sets up per-cpu profiling hooks.  Doesn't do much now...
- */
-static inline void __init
-smp_setup_percpu_timer(int cpuid)
-{
-	setup_timer();
-	cpu_data[cpuid].prof_counter = 1;
-	cpu_data[cpuid].prof_multiplier = 1;
-}
 
 static void __init wait_boot_cpu_to_stop(int cpuid)
 {
@@ -128,11 +105,13 @@ void smp_callin(void)
 	wrent(entInt, 0);
 
 	/* Get our local ticker going. */
-	smp_setup_percpu_timer(cpuid);
+	setup_timer();
 
 	/* All kernel threads share the same mm context.  */
 	mmgrab(&init_mm);
 	current->active_mm = &init_mm;
+	/* update csr:ptbr */
+	wrptbr(virt_to_phys(init_mm.pgd));
 
 	/* inform the notifiers about the new cpu */
 	notify_cpu_starting(cpuid);
@@ -176,23 +155,11 @@ static inline void set_secondary_ready(int cpuid)
  */
 static int secondary_cpu_start(int cpuid, struct task_struct *idle)
 {
-	struct pcb_struct *ipcb;
 	unsigned long timeout;
-
-	ipcb = &task_thread_info(idle)->pcb;
-
 	/*
-	 * Initialize the idle's PCB to something just good enough for
-	 * us to get started.  Immediately after starting, we'll swpctx
-	 * to the target idle task's pcb.  Reuse the stack in the mean
-	 * time.  Precalculate the target PCBB.
+	 * Precalculate the target ksp.
 	 */
-	ipcb->ksp = (unsigned long)ipcb + sizeof(union thread_union) - 16;
-	ipcb->usp = 0;
-	ipcb->pcc = 0;
-	ipcb->asn = 0;
-	tidle_pcb[cpuid] = ipcb->unique = virt_to_phys(ipcb);
-	ipcb->dv_match = ipcb->dv_mask = 0;
+	tidle_ksp[cpuid] = idle->stack + THREAD_SIZE;
 
 	DBGS("Starting secondary cpu %d: state 0x%lx\n", cpuid, idle->state);
 
@@ -298,7 +265,7 @@ void __init setup_smp(void)
 			__cpu_to_rcid[num] = i;
 			__rcid_to_cpu[i] = num;
 			set_cpu_possible(num, true);
-			smp_store_cpu_info(num);
+			store_cpu_data(num);
 			if (!cpumask_test_cpu(i, &cpu_offline))
 				set_cpu_present(num, true);
 			num++;
@@ -407,18 +374,8 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
 
 void __init native_smp_cpus_done(unsigned int max_cpus)
 {
-	int cpu;
-	unsigned long bogosum = 0;
-
-	for (cpu = 0; cpu < NR_CPUS; cpu++)
-		if (cpu_online(cpu))
-			bogosum += cpu_data[cpu].loops_per_jiffy;
-
 	smp_booted = 1;
-	pr_info("SMP: Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
-		num_online_cpus(),
-		(bogosum + 2500) / (500000/HZ),
-		((bogosum + 2500) / (5000/HZ)) % 100);
+	pr_info("SMP: Total of %d processors activated.\n", num_online_cpus());
 }
 
 int setup_profiling_timer(unsigned int multiplier)
@@ -519,22 +476,9 @@ void native_send_call_func_single_ipi(int cpu)
 	send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC);
 }
 
-static void
-ipi_imb(void *ignored)
-{
-	imb();
-}
-
-void smp_imb(void)
-{
-	/* Must wait other processors to flush their icache before continue. */
-	on_each_cpu(ipi_imb, NULL, 1);
-}
-EXPORT_SYMBOL(smp_imb);
-
 static void ipi_flush_tlb_all(void *ignored)
 {
-	tbia();
+	tbiv();
 }
 
 void flush_tlb_all(void)
@@ -545,8 +489,6 @@ void flush_tlb_all(void)
 	on_each_cpu(ipi_flush_tlb_all, NULL, 1);
 }
 
-#define asn_locked() (cpu_data[smp_processor_id()].asn_lock)
-
 static void ipi_flush_tlb_mm(void *x)
 {
 	struct mm_struct *mm = (struct mm_struct *) x;
@@ -651,50 +593,6 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned l
 }
 EXPORT_SYMBOL(flush_tlb_range);
 
-static void ipi_flush_icache_page(void *x)
-{
-	struct mm_struct *mm = (struct mm_struct *) x;
-
-	if (mm == current->mm)
-		__load_new_mm_context(mm);
-	else
-		flush_tlb_other(mm);
-}
-
-void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
-			unsigned long addr, int len)
-{
-	struct mm_struct *mm = vma->vm_mm;
-
-	if ((vma->vm_flags & VM_EXEC) == 0)
-		return;
-	if (!icache_is_vivt_no_ictag())
-		return;
-
-	preempt_disable();
-
-	if (mm == current->mm) {
-		__load_new_mm_context(mm);
-		if (atomic_read(&mm->mm_users) == 1) {
-			int cpu, this_cpu = smp_processor_id();
-
-			for (cpu = 0; cpu < NR_CPUS; cpu++) {
-				if (!cpu_online(cpu) || cpu == this_cpu)
-					continue;
-				if (mm->context.asid[cpu])
-					mm->context.asid[cpu] = 0;
-			}
-			preempt_enable();
-			return;
-		}
-	} else
-		flush_tlb_other(mm);
-
-	smp_call_function(ipi_flush_icache_page, mm, 1);
-
-	preempt_enable();
-}
-
 int native_cpu_disable(void)
 {
 	int cpu = smp_processor_id();

arch/sw_64/kernel/suspend.c

@@ -33,6 +33,7 @@ void sw64_suspend_enter(void)
 	 */
 
 	disable_local_timer();
+	current_thread_info()->pcb.tp = rtid();
 
 #ifdef CONFIG_SW64_SUSPEND_DEEPSLEEP_BOOTCORE
 	sw64_suspend_deep_sleep(&suspend_state);
@@ -40,6 +41,7 @@ void sw64_suspend_enter(void)
 	mtinten();
 	asm("halt");
 #endif
+	wrtp(current_thread_info()->pcb.tp);
 
 	disable_local_timer();
 }

arch/sw_64/kernel/syscalls/syscall.tbl

@@ -163,7 +163,7 @@
 #153 is unused
 #154 is unused
 #155 is unused
-156	common	sigaction			sys_sigaction
+156	common	sigaction			sys_odd_sigaction
 #157 is unused
 #158 is unused
 #159 is unused

arch/sw_64/kernel/time.c

@@ -4,6 +4,9 @@
 #include <linux/delay.h>
 #include <linux/time.h>
 #include <linux/clk-provider.h>
+#ifndef CONFIG_SMP
+#include <linux/clocksource.h>
+#endif
 
 #include <asm/debug.h>
 
@@ -93,10 +96,6 @@ void setup_clocksource(void)
 }
 #endif /* !CONFIG_SMP */
 
-void __init common_init_rtc(void)
-{
-	setup_timer();
-}
 
 void __init
 time_init(void)
@@ -111,15 +110,9 @@ time_init(void)
 	setup_clocksource();
 	of_clk_init(NULL);
 	/* Startup the timer source. */
-	common_init_rtc();
-}
-
-void calibrate_delay(void)
-{
-	loops_per_jiffy = get_cpu_freq() / HZ;
-	pr_info("Clock rate yields %lu.%02lu BogoMIPS (lpj=%lu)\n",
-			loops_per_jiffy / (500000 / HZ),
-			(loops_per_jiffy / (5000 / HZ)) % 100, loops_per_jiffy);
+	setup_timer();
+	/* Calibrate the delay loop directly */
+	lpj_fine = cycle_freq / HZ;
 }
 
 static void __init calibrate_sched_clock(void)

arch/sw_64/kernel/traps.c

@@ -17,6 +17,8 @@
 #include <linux/kallsyms.h>
 #include <linux/sched/task_stack.h>
 #include <linux/sched/debug.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
 
 #include <asm/gentrap.h>
 #include <asm/mmu_context.h>
@@ -29,8 +31,18 @@
 
 #include "proto.h"
 
-void dik_show_regs(struct pt_regs *regs)
+enum SW64_IF_TYPES {
+	IF_BREAKPOINT = 0,
+	IF_RESERVED,
+	IF_GENTRAP,
+	IF_FEN,
+	IF_OPDEC,
+};
+
+void show_regs(struct pt_regs *regs)
 {
+	show_regs_print_info(KERN_DEFAULT);
+
 	printk("pc = [<%016lx>]  ra = [<%016lx>]  ps = %04lx    %s\n",
 	       regs->pc, regs->r26, regs->ps, print_tainted());
 	printk("pc is at %pSR\n", (void *)regs->pc);
@@ -60,8 +72,7 @@ void dik_show_regs(struct pt_regs *regs)
 	printk("gp = %016lx  sp = %p\n", regs->gp, regs+1);
 }
 
-static void
-dik_show_code(unsigned int *pc)
+static void show_code(unsigned int *pc)
 {
 	long i;
 	unsigned int insn;
@@ -75,33 +86,43 @@ dik_show_code(unsigned int *pc)
 	printk("\n");
 }
 
-void die_if_kernel(char *str, struct pt_regs *regs, long err)
+static DEFINE_SPINLOCK(die_lock);
+
+void die(char *str, struct pt_regs *regs, long err)
 {
-	if (regs->ps & 8)
-		return;
-#ifdef CONFIG_SMP
-	printk("CPU %d ", hard_smp_processor_id());
-#endif
-	printk("%s(%d): %s %ld\n", current->comm, task_pid_nr(current), str, err);
-	dik_show_regs(regs);
-	add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
+	static int die_counter;
+	unsigned long flags;
+	int ret;
+
+	oops_enter();
+
+	spin_lock_irqsave(&die_lock, flags);
+	console_verbose();
+	bust_spinlocks(1);
+
+	pr_emerg("%s [#%d]\n", str, ++die_counter);
+
+	ret = notify_die(DIE_OOPS, str, regs, err, 0, SIGSEGV);
+
+	print_modules();
+	show_regs(regs);
+	show_code((unsigned int *)regs->pc);
 	show_stack(current, NULL, KERN_EMERG);
-	dik_show_code((unsigned int *)regs->pc);
 
-	if (test_and_set_thread_flag(TIF_DIE_IF_KERNEL)) {
-		printk("die_if_kernel recursion detected.\n");
-		local_irq_enable();
-		while (1)
-			asm("nop");
-	}
+	bust_spinlocks(0);
+	add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
+	spin_unlock_irqrestore(&die_lock, flags);
+	oops_exit();
 
 	if (kexec_should_crash(current))
 		crash_kexec(regs);
-
+	if (in_interrupt())
+		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception");
 
-	do_exit(SIGSEGV);
+	if (ret != NOTIFY_STOP)
+		do_exit(SIGSEGV);
 }
 
 #ifndef CONFIG_MATHEMU
@@ -135,11 +156,17 @@ do_entArith(unsigned long summary, unsigned long write_mask,
 		if (si_code == 0)
 			return;
 	}
-	die_if_kernel("Arithmetic fault", regs, 0);
+
+	if (!user_mode(regs))
+		die("Arithmetic fault", regs, 0);
 
 	force_sig_fault(SIGFPE, si_code, (void __user *)regs->pc, 0);
 }
 
+/*
+ * BPT/GENTRAP/OPDEC make regs->pc = exc_pc + 4. debugger should
+ * do something necessary to handle it correctly.
+ */
 asmlinkage void
 do_entIF(unsigned long inst_type, struct pt_regs *regs)
 {
@@ -149,35 +176,23 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs)
 	type = inst_type & 0xffffffff;
 	inst = inst_type >> 32;
 
-	if ((regs->ps & ~IPL_MAX) == 0 && type != 4) {
-		if (type == 1) {
-			const unsigned int *data
-				= (const unsigned int *) regs->pc;
-			printk("Kernel bug at %s:%d\n",
-				(const char *)(data[1] | (long)data[2] << 32),
-				data[0]);
-		} else if (type == 0) {
+	if (!user_mode(regs) && type != IF_OPDEC) {
+		if (type == IF_BREAKPOINT) {
 			/* support kgdb */
 			notify_die(0, "kgdb trap", regs, 0, 0, SIGTRAP);
 			return;
 		}
-		die_if_kernel((type == 1 ? "Kernel Bug" : "Instruction fault"),
+		die((type == IF_RESERVED ? "Kernel Bug" : "Instruction fault"),
 				regs, type);
 	}
 
 	switch (type) {
-	case 0: /* breakpoint */
-		if (ptrace_cancel_bpt(current))
-			regs->pc -= 4;	/* make pc point to former bpt */
-
+	case IF_BREAKPOINT: /* gdb do pc-4 for sigtrap */
 		force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0);
 		return;
 
-	case 1: /* bugcheck */
-		force_sig_fault(SIGTRAP, TRAP_UNK, (void __user *)regs->pc, 0);
-		return;
-
-	case 2: /* gentrap */
+	case IF_GENTRAP:
+		regs->pc -= 4;
 		switch ((long)regs->r16) {
 		case GEN_INTOVF:
 			signo = SIGFPE;
@@ -230,6 +245,7 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs)
 		case GEN_SUBRNG6:
 		case GEN_SUBRNG7:
 		default:
+			regs->pc += 4;
 			signo = SIGTRAP;
 			code = TRAP_UNK;
 			break;
@@ -238,7 +254,11 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs)
 		force_sig_fault(signo, code, (void __user *)regs->pc, regs->r16);
 		return;
 
-	case 4: /* opDEC */
+	case IF_FEN:
+		fpu_enable();
+		return;
+
+	case IF_OPDEC:
 		switch (inst) {
 		case BREAK_KPROBE:
 			if (notify_die(DIE_BREAK, "kprobe", regs, 0, 0, SIGTRAP) == NOTIFY_STOP)
@@ -253,27 +273,15 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs)
 			if (notify_die(DIE_UPROBE_XOL, "uprobe_xol", regs, 0, 0, SIGTRAP) == NOTIFY_STOP)
 				return;
 		}
-		if ((regs->ps & ~IPL_MAX) == 0)
-			die_if_kernel("Instruction fault", regs, type);
-		break;
-
-	case 3: /* FEN fault */
-		/*
-		 * Irritating users can call HMC_clrfen to disable the
-		 * FPU for the process. The kernel will then trap to
-		 * save and restore the FP registers.
 
-		 * Given that GCC by default generates code that uses the
-		 * FP registers, HMC_clrfen is not useful except for DoS
-		 * attacks. So turn the bleeding FPU back on and be done
-		 * with it.
-		 */
-		current_thread_info()->pcb.flags |= 1;
-		__reload_thread(&current_thread_info()->pcb);
-		return;
+		if (user_mode(regs))
+			regs->pc -= 4;
+		else
+			die("Instruction fault", regs, type);
+		break;
 
-	case 5: /* illoc */
 	default: /* unexpected instruction-fault type */
+		regs->pc -= 4;
 		break;
 	}
 
@@ -490,21 +498,7 @@ do_entUna(void *va, unsigned long opcode, unsigned long reg,
 	 * Since the registers are in a weird format, dump them ourselves.
 	 */
 
-	printk("%s(%d): unhandled unaligned exception\n",
-	       current->comm, task_pid_nr(current));
-
-	dik_show_regs(regs);
-	dik_show_code((unsigned int *)pc);
-	show_stack(current, NULL, KERN_EMERG);
-
-	if (test_and_set_thread_flag(TIF_DIE_IF_KERNEL)) {
-		printk("die_if_kernel recursion detected.\n");
-		local_irq_enable();
-		while (1)
-			asm("nop");
-	}
-	do_exit(SIGSEGV);
-
+	die("Unhandled unaligned exception", regs, error);
 }
 
 /*

arch/sw_64/kernel/vmlinux.lds.S

@@ -33,7 +33,7 @@ SECTIONS
 	} :text
 	_etext = .;	/* End of text section */
 
-	RO_DATA(4096)
+	RO_DATA(PAGE_SIZE)
 
 	/* Will be freed after init */
 	__init_begin = ALIGN(PAGE_SIZE);

arch/sw_64/kvm/Kconfig

@@ -44,7 +44,7 @@ config KVM_SW64_HOST
 
 config KVM_MEMHOTPLUG
 	bool "Memory hotplug support for guest"
-	depends on KVM
+	depends on KVM && MEMORY_HOTPLUG
 	help
 	  Provides memory hotplug support for SW64 guest.
 

arch/sw_64/kvm/kvm-sw64.c

@@ -21,7 +21,9 @@
 
 bool set_msi_flag;
 unsigned long sw64_kvm_last_vpn[NR_CPUS];
-__read_mostly bool bind_vcpu_enabled;
+#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_NUMA)
+extern bool bind_vcpu_enabled;
+#endif
 #define cpu_last_vpn(cpuid) sw64_kvm_last_vpn[cpuid]
 
 #ifdef CONFIG_SUBARCH_C3B
@@ -306,6 +308,12 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
 	if (change == KVM_MR_FLAGS_ONLY || change == KVM_MR_DELETE)
 		return 0;
 
+	if (test_bit(IO_MARK_BIT, &(mem->guest_phys_addr)))
+		return 0;
+
+	if (test_bit(IO_MARK_BIT + 1, &(mem->guest_phys_addr)))
+		return 0;
+
 #ifndef CONFIG_KVM_MEMHOTPLUG
 	if (mem->guest_phys_addr) {
 		pr_info("%s, No KVM MEMHOTPLUG support!\n", __func__);
@@ -313,12 +321,6 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
 	}
 #endif
 
-	if (test_bit(IO_MARK_BIT, &(mem->guest_phys_addr)))
-		return 0;
-
-	if (test_bit(IO_MARK_BIT + 1, &(mem->guest_phys_addr)))
-		return 0;
-
 	if (!sw64_kvm_pool)
 		return -ENOMEM;
 
@@ -409,6 +411,7 @@ int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu)
 {
 	unsigned long addr = vcpu->kvm->arch.host_phys_addr;
 
+	hrtimer_cancel(&vcpu->arch.hrt);
 	vcpu->arch.vcb.whami = vcpu->vcpu_id;
 	vcpu->arch.vcb.vcpu_irq_disabled = 1;
 	vcpu->arch.pcpu_id = -1; /* force flush tlb for the first time */
@@ -539,6 +542,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
 		vcpu->arch.vcb.vpcr
 			= get_vpcr(vcpu->kvm->arch.host_phys_addr, vcpu->kvm->arch.size, 0);
 
+#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_NUMA)
 		if (unlikely(bind_vcpu_enabled)) {
 			int nid;
 			unsigned long end;
@@ -548,11 +552,12 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
 			if (pfn_to_nid(PHYS_PFN(end)) == nid)
 				set_cpus_allowed_ptr(vcpu->arch.tsk, node_to_cpumask_map[nid]);
 		}
-#else
+#endif
+#else /* !CONFIG_KVM_MEMHOTPLUG */
 		unsigned long seg_base = virt_to_phys(vcpu->kvm->arch.seg_pgd);
 
 		vcpu->arch.vcb.vpcr = get_vpcr_memhp(seg_base, 0);
-#endif
+#endif /* CONFIG_KVM_MEMHOTPLUG */
 		vcpu->arch.vcb.upcr = 0x7;
 	}
 

arch/sw_64/lib/csum_partial_copy.c

@@ -61,10 +61,7 @@ csum_partial_cfu_dest_aligned(const unsigned long __user *src,
 	unsigned long checksum = ~0U;
 	int err = 0;
 
-	if (likely(!uaccess_kernel()))
-		err = __copy_from_user(dst, src, len + 8);
-	else
-		memcpy(dst, src, len + 8);
+	err = __copy_from_user(dst, src, len+8);
 
 	while (len > 0) {
 		word = *dst;
@@ -93,10 +90,7 @@ csum_partial_cfu_dest_unaligned(const unsigned long __user *src,
 	unsigned long checksum = ~0U;
 	int err = 0;
 
-	if (likely(!uaccess_kernel()))
-		err = __copy_from_user(dst, src, len + 8);
-	else
-		memcpy(dst, src, len + 8);
+	err = __copy_from_user(dst, src, len+8);
 
 	dst = (unsigned long *)((unsigned long)dst & (~7UL));
 	word = *dst;

arch/sw_64/lib/deep-copy_template.S

+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * template for memcpy and copy_user with SIMD
+ *
+ * $4:	8-byte misalignment of src when dest is 8-byte aligned
+ * $5:	32-byte misalignment of src when dest is 32-byte aligned
+ * $7:	SIMD status
+ *	0: not in simd loop
+ *	1: in simd loop
+ *	2: in simd_u loop
+ * $16:	latest dest, clobbered
+ * $17:	latest src, clobbered
+ * $18:	bytes left to copy
+ *
+ */
+
+#define NC_STORE_THRESHOLD	2048
+
+#define SAVE_SIMD_REGS \
+	ldi	$sp, -0x60($sp); \
+	addl	$sp, 0x1f, $23; \
+	bic	$23, 0x1f, $23; \
+	vstd	$f1, 0($23); \
+	vstd	$f2, 0x20($23); \
+	ldi	$7, 1
+
+#define RESTORE_SIMD_REGS \
+	addl	$sp, 0x1f, $23; \
+	bic	$23, 0x1f, $23; \
+	vldd	$f1, 0($23); \
+	vldd	$f2, 0x20($23); \
+	ldi	$sp, 0x60($sp); \
+	bis	$31, $31, $7
+
+#define SAVE_SIMD_U_REGS \
+	ldi	$sp, -0xc0($sp); \
+	addl	$sp, 0x1f, $23; \
+	bic	$23, 0x1f, $23; \
+	vstd	$f1, 0($23); \
+	vstd	$f2, 0x20($23); \
+	vstd	$f4, 0x40($23); \
+	vstd	$f5, 0x60($23); \
+	vstd	$f3, 0x80($23); \
+	ldi	$7, 2
+
+#define RESTORE_SIMD_U_REGS \
+	addl	$sp, 0x1f, $23; \
+	bic	$23, 0x1f, $23; \
+	vldd	$f1, 0($23); \
+	vldd	$f2, 0x20($23); \
+	vldd	$f4, 0x40($23); \
+	vldd	$f5, 0x60($23); \
+	vldd	$f3, 0x80($23); \
+	ldi	$sp, 0xc0($sp); \
+	bis	$31, $31, $7
+
+	ble	$18, $out
+	and	$16, 7, $1
+	beq	$1, $dest_aligned_8
+
+$byte_loop_head:
+	FIXUP_LDST( ldbu $2, 0($17) )
+	FIXUP_LDST( stb $2, 0($16) )
+	subl	$18, 1, $18
+	addl	$17, 1, $17
+	addl	$16, 1, $16
+	ble	$18, $out
+	and	$16, 7, $1
+	bne	$1, $byte_loop_head
+
+$dest_aligned_8:
+	and	$17, 7, $4
+	cmplt	$18, 16, $1
+	bne	$1, $quad_loop_end
+	and	$16, 31, $1
+	beq	$1, $dest_aligned_32
+	cmplt	$18, 64, $1
+	bne	$1, $simd_end
+	bne	$4, $quad_u_loop_head
+
+$quad_loop_head:
+	FIXUP_LDST( ldl $2, 0($17) )
+	FIXUP_LDST( stl $2, 0($16) )
+	addl	$16, 8, $16
+	addl	$17, 8, $17
+	subl	$18, 8, $18
+	and	$16, 31, $1
+	beq	$1, $dest_aligned_32
+	br	$31, $quad_loop_head
+
+$dest_aligned_32:
+	cmplt	$18, 64, $1
+	bne	$1, $simd_end
+	and	$17, 31, $5
+	bne	$5, $prep_simd_u_loop
+
+$prep_simd_loop:
+	SAVE_SIMD_REGS
+	ldi	$1, NC_STORE_THRESHOLD($31)
+	cmple	$18, $1, $1
+	bne	$1, $simd_loop
+
+	.align 4
+$simd_loop_nc:
+	FIXUP_LDST( vldd $f1, 0($17) )
+	FIXUP_LDST( vldd $f2, 32($17) )
+	FIXUP_LDST( vstd_nc $f1, 0($16) )
+	FIXUP_LDST( vstd_nc $f2, 32($16) )
+	subl	$18, 64, $18
+	addl	$17, 64, $17
+	addl	$16, 64, $16
+	cmplt	$18, 64, $1
+	beq	$1, $simd_loop_nc
+	memb			# required for _nc store instructions
+	br	$31, $simd_loop_end
+
+	.align 4
+$simd_loop:
+	FIXUP_LDST( vldd $f1, 0($17) )
+	FIXUP_LDST( vldd $f2, 32($17) )
+	FIXUP_LDST( vstd $f1, 0($16) )
+	FIXUP_LDST( vstd $f2, 32($16) )
+	subl	$18, 64, $18
+	addl	$17, 64, $17
+	addl	$16, 64, $16
+	cmplt	$18, 64, $1
+	beq	$1, $simd_loop
+
+$simd_loop_end:
+	cmplt	$18, 32, $1
+	bne	$1, $no_more_simd
+	FIXUP_LDST( vldd $f1, 0($17) )
+	FIXUP_LDST( vstd $f1, 0($16) )
+	subl	$18, 32, $18
+	addl	$17, 32, $17
+	addl	$16, 32, $16
+
+$no_more_simd:
+	RESTORE_SIMD_REGS
+
+$simd_end:
+	ble	$18, $out
+	cmplt	$18, 16, $1
+	bne	$1, $quad_loop_end
+	bne	$4, $prep_quad_u_loop_tail
+
+	.align 4
+$quad_loop_tail:
+	FIXUP_LDST( ldl $2, 0($17) )
+	FIXUP_LDST( ldl $3, 8($17) )
+	FIXUP_LDST( stl $2, 0($16) )
+	FIXUP_LDST( stl $3, 8($16) )
+	subl	$18, 16, $18
+	addl	$17, 16, $17
+	addl	$16, 16, $16
+	cmplt	$18, 16, $1
+	beq	$1, $quad_loop_tail
+
+$quad_loop_end:
+	ble	$18, $out
+	cmplt	$18, 8, $1
+	bne	$1, $byte_loop_tail
+	bne	$4, $move_one_quad_u
+
+$move_one_quad:
+	FIXUP_LDST( ldl $2, 0($17) )
+	FIXUP_LDST( stl $2, 0($16) )
+	subl	$18, 8, $18
+	addl	$17, 8, $17
+	addl	$16, 8, $16
+	ble	$18, $out
+
+	.align 3
+$byte_loop_tail:
+	FIXUP_LDST( ldbu $2, 0($17) )
+	FIXUP_LDST( stb $2, 0($16) )
+	subl	$18, 1, $18
+	addl	$17, 1, $17
+	addl	$16, 1, $16
+	bgt	$18, $byte_loop_tail
+	br	$31, $out
+
+/* misaligned src and dst */
+$quad_u_loop_head:
+	FIXUP_LDST( ldl_u $2, 0($17) )
+	FIXUP_LDST( ldl_u $3, 7($17) )
+	extll	$2, $4, $2
+	exthl	$3, $4, $3
+	bis	$2, $3, $2
+	FIXUP_LDST( stl $2, 0($16) )
+	addl	$16, 8, $16
+	addl	$17, 8, $17
+	subl	$18, 8, $18
+	and	$16, 31, $1
+	beq	$1, $dest_aligned_32
+	br	$31, $quad_u_loop_head
+
+$prep_simd_u_loop:
+	SAVE_SIMD_U_REGS
+	andnot	$17, 31, $3
+	ldi	$2, 256($31)
+	sll	$5, 3, $1
+	subl	$2, $1, $2
+	sll	$1, 29, $1
+	sll	$2, 29, $2
+	ifmovd	$1, $f1
+	ifmovd	$2, $f2
+	FIXUP_LDST( vldd $f4, 0($3) )
+	ldi	$1, NC_STORE_THRESHOLD($31)
+	cmple	$18, $1, $1
+	bne	$1, $simd_u_loop
+
+	.align 4
+$simd_u_loop_nc:
+	FIXUP_LDST( vldd $f5, 32($3) )
+	srlow	$f4, $f1, $f4
+	sllow	$f5, $f2, $f3
+	vlogfc	$f3, $f4, $f31, $f3
+	FIXUP_LDST( vstd_nc $f3, 0($16) )
+	FIXUP_LDST( vldd $f4, 64($3) )
+	srlow	$f5, $f1, $f5
+	sllow	$f4, $f2, $f3
+	vlogfc	$f5, $f3, $f31, $f5
+	FIXUP_LDST( vstd_nc $f5, 32($16) )
+	subl	$18, 64, $18
+	addl	$3, 64, $3
+	addl	$16, 64, $16
+	cmplt	$18, 64, $1
+	beq	$1, $simd_u_loop_nc
+	memb			# required for _nc store instructions
+	br	$31, $simd_u_loop_end
+
+	.align 4
+$simd_u_loop:
+	FIXUP_LDST( vldd $f5, 32($3) )
+	srlow	$f4, $f1, $f4
+	sllow	$f5, $f2, $f3
+	vlogfc	$f4, $f3, $f31, $f3
+	FIXUP_LDST( vstd $f3, 0($16) )
+	FIXUP_LDST( vldd $f4, 64($3) )
+	srlow	$f5, $f1, $f5
+	sllow	$f4, $f2, $f3
+	vlogfc	$f5, $f3, $f31, $f3
+	FIXUP_LDST( vstd $f3, 32($16) )
+	subl	$18, 64, $18
+	addl	$3, 64, $3
+	addl	$16, 64, $16
+	cmplt	$18, 64, $1
+	beq	$1, $simd_u_loop
+
+$simd_u_loop_end:
+	cmplt	$18, 32, $1
+	bne	$1, $no_more_simd_u
+	FIXUP_LDST( vldd $f5, 32($3) )
+	srlow	$f4, $f1, $f4
+	sllow	$f5, $f2, $f3
+	vlogfc	$f4, $f3, $f31, $f3
+	FIXUP_LDST( vstd $f3, 0($16) )
+	subl	$18, 32, $18
+	addl	$3, 32, $3
+	addl	$16, 32, $16
+
+$no_more_simd_u:
+	RESTORE_SIMD_U_REGS
+	bis	$3, $5, $17
+	br	$31, $simd_end
+
+$prep_quad_u_loop_tail:
+	FIXUP_LDST( ldl_u $2, 0($17) )
+	.align 4
+$quad_u_loop_tail:
+	FIXUP_LDST( ldl_u $3, 8($17) )
+	extll	$2, $4, $22
+	exthl	$3, $4, $23
+	bis	$22, $23, $22
+	FIXUP_LDST( stl $22, 0($16) )
+	FIXUP_LDST( ldl_u $2, 16($17) )
+	extll	$3, $4, $24
+	exthl	$2, $4, $25
+	bis	$24, $25, $24
+	FIXUP_LDST( stl $24, 8($16) )
+	subl	$18, 16, $18
+	addl	$17, 16, $17
+	addl	$16, 16, $16
+	cmplt	$18, 16, $1
+	beq	$1, $quad_u_loop_tail
+	br	$31, $quad_loop_end
+
+$move_one_quad_u:
+	FIXUP_LDST( ldl_u $2, 0($17) )
+	FIXUP_LDST( ldl_u $3, 8($17) )
+	extll	$2, $4, $22
+	exthl	$3, $4, $23
+	bis	$22, $23, $22
+	FIXUP_LDST( stl $22, 0($16) )
+	subl	$18, 8, $18
+	addl	$17, 8, $17
+	addl	$16, 8, $16
+	ble	$18, $out
+	br	$31, $byte_loop_tail

arch/sw_64/lib/deep-copy_user.S

 /* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copy to/from user space, handling exceptions as we go..  This
- * isn't exactly pretty.
- *
- * This is essentially the same as "memcpy()", but with a few twists.
- * Notably, we have to make sure that $18 is always up-to-date and
- * contains the right "bytes left to copy" value (and that it is updated
- * only _after_ a successful copy). There is also some rather minor
- * exception setup stuff..
- *
- * Inputs:
- *	length in $18
- *	destination address in $16
- *	source address in $17
- *	return address in $26
- *
- * Outputs:
- *	bytes left to copy in $0
- *
- * Clobbers:
- *	$1,$2,$3,$4,$5,$16,$17
- *
- */
 
-/* Author: Copy_user simd version 1.1 (20190904) by Gao Xiuwu.
-*/
 #include <asm/export.h>
 
 /* Allow an exception for an insn; exit if we get one.  */
-#define EXI(x, y...)			\
-	99: x, ##y;			\
-	.section __ex_table, "a";	\
-	.long 99b - .;			\
-	ldi $31, $exitin-99b($31);	\
-	.previous
-
-#define EXO(x,y...)			\
-	99: x, ##y;			\
+#define FIXUP_LDST(x, y)			\
+	99: x, y;			\
 	.section __ex_table, "a";	\
 	.long 99b - .;			\
-	ldi $31, $exitout-99b($31);	\
+	ldi $31, $out-99b($31);		\
 	.previous
 
-	.set noat
-	.align 4
+/*
+ * $7:	SIMD status
+ *	0: not in simd loop
+ *	1: in simd loop
+ *	2: in simd_u loop
+ * $18:	bytes left to copy
+ *
+ */
 	.globl __copy_user
 	.ent __copy_user
-
 __copy_user:
 	.prologue 0
-	subl	$18, 32, $1
-	beq	$18, $zerolength
-
-	and	$16, 7, $3
-	ble	$1, $onebyteloop
-	beq	$3, $destaligned
-	subl	$3, 8, $3
-/*
- * The fetcher stall also hides the 1 cycle cross-cluster stall for $3 (L --> U)
- * This loop aligns the destination a byte at a time
- * We know we have at least one trip through this loop
- */
-$aligndest:
-	EXI(ldbu $1, 0($17))
-	addl	$16, 1, $16
-	addl	$3, 1, $3
-
-/*
- * the -1 is to compensate for the inc($16) done in a previous quadpack
- * which allows us zero dependencies within either quadpack in the loop
- */
-	EXO(stb $1, -1($16))
-	addl	$17, 1, $17
-	subl	$18, 1, $18
-	bne	$3, $aligndest
-
-/*
- * If we fell through into here, we have a minimum of 33 - 7 bytes
- * If we arrived via branch, we have a minimum of 32 bytes
- */
-$destaligned:
-	and	$17, 7, $1
-	bic	$18, 7, $4
-	#EXI(ldl_u $3, 0($17))
-	beq	$1, $quadaligned
-
-#ifndef MISQUAD_SCALAR
-$misquad:
-	and	$16, 31, $1
-	beq	$1, $dest32Baligned
-
-$align_32B:
-	EXI(ldbu $1, 0($17))
-	addl	$17, 1, $17
-	EXO(stb $1, 0($16))
-	subl	$18, 1, $18
-	addl	$16, 1, $16
-	and	$16, 31, $1
-	beq	$18, $exitout
-	bne	$1, $align_32B
-
-$dest32Baligned:
-	ldi	$2, 256($31)
-	andnot	$17, 31, $3
-	EXI(vldd  $f10, 0($3))
-	and	$17, 31, $5
-	sll	$5, 3, $5
-	subw	$2, $5, $4
-	ifmovs	$5, $f15
-	ifmovs	$4, $f14
-
-	cmple $18, 63, $1
-	bne $1, $misalign_tail_simd
-
-$misalign_body_simd:
-	EXI(vldd $f11, 32($3))
-	fillcs	128*5($3)
-
-	srlow	$f10, $f15, $f12
-	sllow	$f11, $f14, $f13
-	#fillde	128*5($16)
-	vlogfc	$f12, $f13, $f31, $f12
-
-	EXI(vldd $f10, 64($3))
-	srlow	$f11, $f15, $f22
-	sllow	$f10, $f14, $f23
-	vlogfc	$f22, $f23, $f31, $f22
-
-	EXO(vstd  $f12, 0($16))
-	EXO(vstd  $f22, 32($16))
-
-	addl	$16, 64, $16
-	addl	$3, 64, $3
-	subl	$18, 64, $18
-
-	cmple	$18, 63, $1
-	beq	$1, $misalign_body_simd
-	br	$misalign_tail_simd
-
-$misalign_tail_simd:
-	cmple	$18, 31, $1
-	bne	$1, $before_misalign_tail_quads
-
-	EXI(vldd $f11, 32($3))
-	srlow	$f10, $f15, $f12
-	sllow	$f11, $f14, $f13
-	vlogfc	$f12, $f13, $f31, $f12
-
-	EXO(vstd $f12, 0($16))
-
-	subl	$18, 32, $18
-	addl	$16, 32, $16
-	addl	$3, 32, $3
-	vfmov	$f11, $f10
-
-$before_misalign_tail_quads:
-	srlow	$f10, $f15, $f12
-	s8subl	$18, $4, $1
-	ble	$1, $tail_quads
-
-	EXI(vldd $f11, 32($3))
-	sllow	$f11, $f14, $f13
-	vlogfc	$f12, $f13, $f31, $f12
-
-$tail_quads:
-	subl	$18, 8, $1
-	blt	$1, $less_than_8
-
-$move_a_quad:
-	fimovd	$f12, $1
-	srlow	$f12, 64, $f12
-
-	EXO(stl $1, 0($16))
-	subl	$18, 8, $18
-	addl	$16, 8, $16
-	subl	$18, 8, $1
-	bge	$1, $move_a_quad
-
-$less_than_8:
-	.align 4
-	beq	$18, $exitout
-	fimovd	$f12, $1
-
-$tail_bytes:
-	EXO(stb $1, 0($16))
-	subl	$18, 1, $18
-	srl	$1, 8, $1
-	addl	$16, 1, $16
-	bgt	$18, $tail_bytes
-	br	$exitout
-#else
-
-/*
- * In the worst case, we've just executed an ldl_u here from 0($17)
- * and we'll repeat it once if we take the branch
- */
-
-/* Misaligned quadword loop - not unrolled.  Leave it that way. */
-$misquad:
-	EXI(ldl_u $2, 8($17))
-	subl	$4, 8, $4
-	extll	$3, $17, $3
-	exthl	$2, $17, $1
-
-	bis	$3, $1, $1
-	EXO(stl $1, 0($16))
-	addl	$17, 8, $17
-	subl	$18, 8, $18
-
-	addl	$16, 8, $16
-	bis	$2, $2, $3
-	bne	$4, $misquad
-
-	beq	$18, $zerolength
-
-/* We know we have at least one trip through the byte loop */
-	EXI(ldbu $2, 0($17))
-	addl	$16, 1, $16
-	br	$31, $dirtyentry
-#endif
-/* Do the trailing byte loop load, then hop into the store part of the loop */
-
-/*
- * A minimum of (33 - 7) bytes to do a quad at a time.
- * Based upon the usage context, it's worth the effort to unroll this loop
- * $18 - number of bytes to be moved
- * $4 - number of bytes to move as quadwords
- * $16 is current destination address
- * $17 is current source address
- */
-
-$quadaligned:
-	and	$16, 31, $1
-	beq	$1, $quadaligned_dest32Baligned
-
-$quadaligned_align_32B:
-	EXI(ldl $1, 0($17))
-	addl	$17, 8, $17
-	EXO(stl $1, 0($16))
-	subl	$18, 8, $18
-	subl	$4, 8, $4
-	addl	$16, 8, $16
-	and	$16, 31, $1
-	beq	$4, $onebyteloop
-	bne	$1, $quadaligned_align_32B
-
-$quadaligned_dest32Baligned:
-	and	$17, 31, $2
-	bne	$2, $dest32Baligned
-
-$quad32Bailgned:
-	subl	$4, 64, $2
-	blt	$2, $onequad
-
-/*
- * There is a significant assumption here that the source and destination
- * addresses differ by more than 32 bytes.  In this particular case, a
- * sparsity of registers further bounds this to be a minimum of 8 bytes.
- * But if this isn't met, then the output result will be incorrect.
- * Furthermore, due to a lack of available registers, we really can't
- * unroll this to be an 8x loop (which would enable us to use the wh64
- * instruction memory hint instruction).
- */
-
-$simd_quadalign_unroll2:
-	fillcs 128 * 5($17)
-	EXI(vldd $f22, 0($17))
-	EXI(vldd $f23, 32($17))
-	EXO(vstd $f22, 0($16))
-	EXO(vstd $f23, 32($16))
-	#fillde 128 * 5($16)
-	subl	$4, 64, $4
-	subl	$18, 64, $18
-	addl	$17, 64, $17
-	addl	$16, 64, $16
-	subl	$4, 64, $3
-	bge	$3, $simd_quadalign_unroll2
-	bne	$4, $onequad
-	br	$31, $noquads
-
-$onequad:
-	EXI(ldl $1, 0($17))
-	subl	$4, 8, $4
-	addl	$17, 8, $17
-
-	EXO(stl $1, 0($16))
-	subl	$18, 8, $18
-	addl	$16, 8, $16
-	bne	$4, $onequad
-
-$noquads:
-	beq	$18, $zerolength
-
-/*
- * For small copies (or the tail of a larger copy), do a very simple byte loop.
- * There's no point in doing a lot of complex alignment calculations to try to
- * to quadword stuff for a small amount of data.
- *	$18 - remaining number of bytes left to copy
- *	$16 - current dest addr
- *	$17 - current source addr
- */
-
-$onebyteloop:
-	EXI(ldbu $2, 0($17))
-	addl	$16, 1, $16
-
-$dirtyentry:
-/*
- * the -1 is to compensate for the inc($16) done in a previous quadpack
- * which allows us zero dependencies within either quadpack in the loop
- */
-	EXO(stb $2, -1($16))
-	addl	$17, 1, $17
-	subl	$18, 1, $18
-	bgt	$18, $onebyteloop
-
-$zerolength:
-$exitout:
+	bis	$31, $31, $7
+#include "deep-copy_template.S"
+$out:
 	bis	$31, $18, $0
-	ret	$31, ($26), 1
+	beq	$7, $return
+	subl	$7, 1, $7
+	beq	$7, $restore_simd
 
-$exitin:
+$restore_simd_u:
+	RESTORE_SIMD_U_REGS
+	br	$31, $return
 
-	/* A stupid byte-by-byte zeroing of the rest of the output
-	 * buffer.  This cures security holes by never leaving
-	 * random kernel data around to be copied elsewhere.
-	 */
-
-	mov	$18, $1
-
-$101:
-	EXO(stb $31, 0($16))
-	subl	$1, 1, $1
-	addl	$16, 1, $16
-	bgt	$1, $101
-
-	bis	$31, $18, $0
-	ret	$31, ($26), 1
+$restore_simd:
+	RESTORE_SIMD_REGS
 
+$return:
+	ret
 	.end __copy_user
 	EXPORT_SYMBOL(__copy_user)

arch/sw_64/lib/deep-memcpy.S

@@ -2,307 +2,18 @@
 
 #include <asm/export.h>
 
-#define NC_STORE_THRESHOLD	2048
+#define FIXUP_LDST(x, y)	\
+	x, y
 
-#define SAVE_SIMD_REGS \
-	ldi	$sp, -0x60($sp); \
-	addl	$sp, 0x1f, $23; \
-	bic	$23, 0x1f, $23; \
-	vstd	$f1, 0($23); \
-	vstd	$f2, 0x20($23)
-
-#define RESTORE_SIMD_REGS \
-	addl	$sp, 0x1f, $23; \
-	bic	$23, 0x1f, $23; \
-	vldd	$f1, 0($23); \
-	vldd	$f2, 0x20($23); \
-	ldi	$sp, 0x60($sp)
-
-#define SAVE_SIMD_U_REGS \
-	ldi	$sp, -0x120($sp); \
-	addl	$sp, 0x1f, $23; \
-	bic	$23, 0x1f, $23; \
-	vstd	$f1, 0($23); \
-	vstd	$f2, 0x20($23); \
-	vstd	$f4, 0x40($23); \
-	vstd	$f5, 0x60($23); \
-	vstd	$f10, 0x80($23); \
-	vstd	$f11, 0xa0($23); \
-	vstd	$f20, 0xc0($23); \
-	vstd	$f21, 0xe0($23)
-
-#define RESTORE_SIMD_U_REGS \
-	addl	$sp, 0x1f, $23; \
-	bic	$23, 0x1f, $23; \
-	vldd	$f1, 0($23); \
-	vldd	$f2, 0x20($23); \
-	vldd	$f4, 0x40($23); \
-	vldd	$f5, 0x60($23); \
-	vldd	$f10, 0x80($23); \
-	vldd	$f11, 0xa0($23); \
-	vldd	$f20, 0xc0($23); \
-	vldd	$f21, 0xe0($23); \
-	ldi	$sp, 0x120($sp)
-
-	.set noat
-	.align 4
 	.globl memcpy
 	.ent memcpy
 memcpy:
 	.frame $30, 0, $26, 0
 	.prologue 0
-
 	mov	$16, $0
-	ble	$18, $out
-	and	$16, 7, $1
-	beq	$1, $dest_aligned_8
-
-	.align 4
-$byte_loop_head:
-	ldbu	$2, 0($17)
-	subl	$18, 1, $18
-	addl	$17, 1, $17
-	stb	$2, 0($16)
-	addl	$16, 1, $16
-	ble	$18, $out
-	and	$16, 7, $1
-	bne	$1, $byte_loop_head
-
-$dest_aligned_8:
-	and	$17, 7, $4
-	subl	$18, 16, $18
-	blt	$18, $quad_end
-	subl	$18, 64, $18
-	blt	$18, $simd_end
-	and	$16, 31, $1
-	beq	$1, $dest_aligned_32
-	bne	$4, $quad_u_loop_head
-
-	.align 5
-$quad_loop_head:
-	ldl	$2, 0($17)
-	subl	$18, 8, $18
-	addl	$17, 8, $17
-	stl	$2, 0($16)
-	addl	$16, 8, $16
-	and	$16, 31, $1
-	blt	$18, $simd_end
-	beq	$16, $dest_aligned_32
-	br	$31, $quad_loop_head
-
-$dest_aligned_32:
-	and	$17, 31, $5
-	bne	$5, $prep_simd_u_loop
-
-$prep_simd_loop:
-	SAVE_SIMD_REGS
-	ldi	$1, NC_STORE_THRESHOLD($31)
-	cmple	$18, $1, $1
-	bne	$1, $simd_loop
-
-	.align 5
-$simd_loop_nc:
-	fillcs	128 * 5($17)
-	vldd	$f1, 0($17)
-	vldd	$f2, 32($17)
-	subl	$18, 64, $18
-	addl	$17, 64, $17
-	vstd_nc	$f1, 0($16)
-	vstd_nc	$f2, 32($16)
-	addl	$16, 64, $16
-	bge	$18, $simd_loop_nc
-	memb			# required for _nc store instructions
-	br	$31, $simd_loop_end
-
-	.align 5
-$simd_loop:
-	fillcs	128 * 5($17)
-	vldd	$f1, 0($17)
-	vldd	$f2, 32($17)
-	subl	$18, 64, $18
-	addl	$17, 64, $17
-	vstd	$f1, 0($16)
-	vstd	$f2, 32($16)
-	addl	$16, 64, $16
-	bge	$18, $simd_loop
-
-$simd_loop_end:
-	addl	$18, 64, $1
-	cmplt	$1, 32, $1
-	bne	$1, $no_more_simd
-	vldd	$f1, 0($17)
-	subl	$18, 32, $18
-	addl	$17, 32, $17
-	vstd	$f1, 0($16)
-	addl	$16, 32, $16
-
-$no_more_simd:
-	RESTORE_SIMD_REGS
-
-$simd_end:
-	addl	$18, 64, $18
-	blt	$18, $quad_end
-	bne	$4, $prep_quad_u_loop_tail
-
-	.align 4
-$quad_loop_tail:
-	ldl	$2, 0($17)
-	ldl	$3, 8($17)
-	subl	$18, 16, $18
-	addl	$17, 16, $17
-	stl	$2, 0($16)
-	stl	$3, 8($16)
-	addl	$16, 16, $16
-	bge	$18, $quad_loop_tail
-
-$quad_end:
-	addl	$18, 16, $18
-	ble	$18, $out
-	cmplt	$18, 8, $1
-	bne	$1, $byte_loop_tail
-	bne	$4, $move_one_quad_u
-
-$move_one_quad:
-	ldl	$2, 0($17)
-	subl	$18, 8, $18
-	addl	$17, 8, $17
-	stl	$2, 0($16)
-	addl	$16, 8, $16
-	ble	$18, $out
-
-	.align 4
-$byte_loop_tail:
-	ldbu	$2, 0($17)
-	subl	$18, 1, $18
-	addl	$17, 1, $17
-	stb	$2, 0($16)
-	addl	$16, 1, $16
-	bgt	$18, $byte_loop_tail
-
+#include "deep-copy_template.S"
 $out:
-	ret	$31, ($26), 1
-
-
-
-	.align 5
-$quad_u_loop_head:
-	ldl_u	$2, 0($17)
-	ldl_u	$3, 7($17)
-	subl	$18, 8, $18
-	addl	$17, 8, $17
-	extll	$2, $4, $2
-	exthl	$3, $4, $3
-	bis	$2, $3, $2
-	stl	$2, 0($16)
-	addl	$16, 8, $16
-	blt	$18, $simd_end
-	beq	$16, $dest_aligned_32
-	br	$31, $quad_u_loop_head
-
-$prep_simd_u_loop:
-	SAVE_SIMD_U_REGS
-	andnot	$17, 31, $3
-	ldi	$2, 256($31)
-	sll	$5, 3, $1
-	subl	$2, $1, $2
-	sll	$1, 29, $1
-	sll	$2, 29, $2
-	ifmovd	$1, $f1
-	ifmovd	$2, $f2
-	vldd	$f4, 0($3)
-	ldi	$1, NC_STORE_THRESHOLD($31)
-	cmple	$18, $1, $1
-	bne	$1, $simd_u_loop
-
-	.align 5
-$simd_u_loop_nc:
-	vldd	$f5, 32($3)
-	fillcs	128 * 5($3)
-	srlow	$f4, $f1, $f10
-	sllow	$f5, $f2, $f11
-	vlogfc	$f10, $f11, $f31, $f10
-	vldd	$f4, 64($3)
-	srlow	$f5, $f1, $f20
-	sllow	$f4, $f2, $f21
-	vlogfc	$f20, $f21, $f31, $f20
-	vstd_nc	$f10, 0($16)
-	vstd_nc	$f20, 32($16)
-	subl	$18, 64, $18
-	addl	$3, 64, $3
-	addl	$16, 64, $16
-	bge	$18, $simd_u_loop_nc
-	memb			# required for _nc store instructions
-	br	$31, $simd_u_loop_end
-
-	.align 5
-$simd_u_loop:
-	vldd	$f5, 32($3)
-	fillcs	128 * 5($3)
-	srlow	$f4, $f1, $f10
-	sllow	$f5, $f2, $f11
-	vlogfc	$f10, $f11, $f31, $f10
-	vldd	$f4, 64($3)
-	srlow	$f5, $f1, $f20
-	sllow	$f4, $f2, $f21
-	vlogfc	$f20, $f21, $f31, $f20
-	vstd	$f10, 0($16)
-	vstd	$f20, 32($16)
-	subl	$18, 64, $18
-	addl	$3, 64, $3
-	addl	$16, 64, $16
-	bge	$18, $simd_u_loop
-
-$simd_u_loop_end:
-	addl	$18, 64, $1
-	cmplt	$1, 32, $1
-	bne	$1, $no_more_simd_u
-	vldd	$f5, 32($3)
-	srlow	$f4, $f1, $f10
-	sllow	$f5, $f2, $f11
-	vlogfc	$f10, $f11, $f31, $f10
-	vstd	$f10, 0($16)
-	subl	$18, 32, $18
-	addl	$3, 32, $3
-	addl	$16, 32, $16
-
-$no_more_simd_u:
-	RESTORE_SIMD_U_REGS
-	bis	$3, $5, $17
-	br	$31, $simd_end
-
-$prep_quad_u_loop_tail:
-	ldl_u	$2, 0($17)
-	.align 5
-$quad_u_loop_tail:
-	ldl_u	$3, 8($17)
-	extll	$2, $4, $22
-	exthl	$3, $4, $23
-	bis	$22, $23, $22
-	stl	$22, 0($16)
-	ldl_u	$2, 16($17)
-	extll	$3, $4, $24
-	exthl	$2, $4, $25
-	bis	$24, $25, $24
-	stl	$24, 8($16)
-	subl	$18, 16, $18
-	addl	$17, 16, $17
-	addl	$16, 16, $16
-	bge	$18, $quad_u_loop_tail
-	br	$31, $quad_end
-
-$move_one_quad_u:
-	ldl_u	$2, 0($17)
-	ldl_u	$3, 8($17)
-	subl	$18, 8, $18
-	addl	$17, 8, $17
-	extll	$2, $4, $22
-	exthl	$3, $4, $23
-	bis	$22, $23, $22
-	stl	$22, 0($16)
-	addl	$16, 8, $16
-	ble	$18, $out
-	br	$31, $byte_loop_tail
-
+	ret
 	.end memcpy
 	EXPORT_SYMBOL(memcpy)
 __memcpy = memcpy

arch/sw_64/lib/iomap_copy.c

@@ -41,15 +41,12 @@ void __iowrite64_copy(void __iomem *to,
 		      const void *from,
 		      size_t count)
 {
-#ifdef CONFIG_64BIT
 	u64 __iomem *dst = to;
 	const u64 *src = from;
 	const u64 *end = src + count;
 
-	while (src < end)
+	while (src < end) {
 		__raw_writeq(*src++, dst++);
 		mb();
-#else
-	__iowrite32_copy(to, from, count * 2);
-#endif
+	}
 }

arch/sw_64/lib/udelay.c

@@ -28,12 +28,6 @@ void __delay(unsigned long loops)
 }
 EXPORT_SYMBOL(__delay);
 
-#ifdef CONFIG_SMP
-#define LPJ	 cpu_data[smp_processor_id()].loops_per_jiffy
-#else
-#define LPJ	 loops_per_jiffy
-#endif
-
 void udelay(unsigned long usecs)
 {
 	unsigned long loops = usecs * get_cpu_freq() / 1000000;

arch/sw_64/mm/fault.c

@@ -31,8 +31,8 @@ static inline int notify_page_fault(struct pt_regs *regs, unsigned long mmcsr)
 }
 #endif
 
-extern void die_if_kernel(char *, struct pt_regs *, long);
-extern void dik_show_regs(struct pt_regs *regs);
+extern void die(char *, struct pt_regs *, long);
+extern void show_regs(struct pt_regs *regs);
 
 void show_all_vma(void)
 {
@@ -61,31 +61,6 @@ void show_all_vma(void)
 	}
 }
 
-/*
- * Force a new ASN for a task.
- */
-
-#ifndef CONFIG_SMP
-unsigned long last_asn = ASN_FIRST_VERSION;
-#endif
-
-void
-__load_new_mm_context(struct mm_struct *next_mm)
-{
-	unsigned long mmc;
-	struct pcb_struct *pcb;
-
-	mmc = __get_new_mm_context(next_mm, smp_processor_id());
-	next_mm->context.asid[smp_processor_id()] = mmc;
-
-	pcb = &current_thread_info()->pcb;
-	pcb->asn = mmc & HARDWARE_ASN_MASK;
-	pcb->ptbr = virt_to_pfn(next_mm->pgd);
-
-	__reload_thread(pcb);
-}
-
-
 /*
  * This routine handles page faults.  It determines the address,
  * and the problem, and then passes it off to handle_mm_fault().
@@ -301,7 +276,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr,
 	 */
 	pr_alert("Unable to handle kernel paging request at virtual address %016lx\n",
 	       address);
-	die_if_kernel("Oops", regs, cause);
+	die("Oops", regs, cause);
 	do_exit(SIGKILL);
 
 	/*
@@ -332,7 +307,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr,
 	if (unlikely(segv_debug_enabled)) {
 		pr_info("fault: want to send_segv: pid %d, cause = %#lx, mmcsr = %#lx, address = %#lx, pc %#lx\n",
 				current->pid, cause, mmcsr, address, regs->pc);
-		dik_show_regs(regs);
+		show_regs(regs);
 		show_all_vma();
 	}
 

arch/sw_64/mm/init.c

@@ -34,6 +34,7 @@ static pud_t vmalloc_pud[1024]	__attribute__((__aligned__(PAGE_SIZE)));
 static phys_addr_t mem_start;
 static phys_addr_t mem_size_limit;
 
+#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
 unsigned long memory_block_size_bytes(void)
 {
 	if (is_in_guest())
@@ -41,6 +42,7 @@ unsigned long memory_block_size_bytes(void)
 	else
 		return MIN_MEMORY_BLOCK_SIZE;
 }
+#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
 
 static int __init setup_mem_size(char *p)
 {
@@ -75,34 +77,14 @@ pgd_alloc(struct mm_struct *mm)
 	return ret;
 }
 
-static inline unsigned long
-load_PCB(struct pcb_struct *pcb)
-{
-	register unsigned long sp __asm__("$30");
-	pcb->ksp = sp;
-	return __reload_thread(pcb);
-}
-
 /* Set up initial PCB, VPTB, and other such nicities.  */
 
 static inline void
 switch_to_system_map(void)
 {
-	unsigned long newptbr;
-	unsigned long original_pcb_ptr;
-
-	/*
-	 * Initialize the kernel's page tables.  Linux puts the vptb in
-	 * the last slot of the L1 page table.
-	 */
 	memset(swapper_pg_dir, 0, PAGE_SIZE);
-	newptbr = virt_to_pfn(swapper_pg_dir);
-
-	/* Also set up the real kernel PCB while we're at it.  */
-	init_thread_info.pcb.ptbr = newptbr;
-	init_thread_info.pcb.flags = 1;	/* set FEN, clear everything else */
-	original_pcb_ptr = load_PCB(&init_thread_info.pcb);
-	tbia();
+	wrptbr(virt_to_phys(swapper_pg_dir));
+	tbiv();
 }
 
 void __init callback_init(void)

arch/sw_64/mm/physaddr.c

 // SPDX-License-Identifier: GPL-2.0
 #include <linux/mmdebug.h>
 #include <linux/module.h>
+#include <linux/mm.h>
 #include <asm/page.h>
 
 unsigned long __phys_addr(unsigned long x)

arch/sw_64/net/bpf_jit.h

@@ -21,80 +21,82 @@
 #ifndef _SW64_BPF_JIT_H
 #define _SW64_BPF_JIT_H
 
+/* SW64 instruction field shift */
 #define SW64_BPF_OPCODE_OFFSET		26
 #define SW64_BPF_RA_OFFSET		21
 #define SW64_BPF_RB_OFFSET		16
 #define SW64_BPF_SIMPLE_ALU_IMM_OFFSET	13
 #define SW64_BPF_SIMPLE_ALU_FUNC_OFFSET	5
 #define SW64_BPF_SIMPLE_ALU_RC_OFFSET	0
+#define SW64_BPF_LS_FUNC_OFFSET		12
 
-#define SW64_BPF_OPCODE_BR_CALL		0x01
-#define SW64_BPF_OPCODE_BR_RET		0x02
-#define SW64_BPF_OPCODE_BR_JMP		0x03
-#define SW64_BPF_OPCODE_BR_BR		0x04
-#define SW64_BPF_OPCODE_BR_BSR		0x05
-#define SW64_BPF_OPCODE_BR_BEQ		0x30
-#define SW64_BPF_OPCODE_BR_BNE		0x31
-#define SW64_BPF_OPCODE_BR_BLT		0x32
-#define SW64_BPF_OPCODE_BR_BLE		0x33
-#define SW64_BPF_OPCODE_BR_BGT		0x34
-#define SW64_BPF_OPCODE_BR_BGE		0x35
-#define SW64_BPF_OPCODE_BR_BLBC		0x36
-#define SW64_BPF_OPCODE_BR_BLBS		0x37
-
-#define SW64_BPF_OPCODE_LS_LDBU		0x20
-#define SW64_BPF_OPCODE_LS_LDHU		0x21
-#define SW64_BPF_OPCODE_LS_LDW		0x22
-#define SW64_BPF_OPCODE_LS_LDL		0x23
-#define SW64_BPF_OPCODE_LS_STB		0x28
-#define SW64_BPF_OPCODE_LS_STH		0x29
-#define SW64_BPF_OPCODE_LS_STW		0x2A
-#define SW64_BPF_OPCODE_LS_STL		0x2B
-#define SW64_BPF_OPCODE_LS_LDI		0x3E
-#define SW64_BPF_OPCODE_LS_LDIH		0x3F
-
+/* SW64 instruction opcodes */
+#define SW64_BPF_OPCODE_CALL		0x01
+#define SW64_BPF_OPCODE_RET		0x02
+#define SW64_BPF_OPCODE_JMP		0x03
+#define SW64_BPF_OPCODE_BR		0x04
+#define SW64_BPF_OPCODE_BSR		0x05
+#define SW64_BPF_OPCODE_MISC		0x06
+#define SW64_BPF_OPCODE_LOCK		0x08
 #define SW64_BPF_OPCODE_ALU_REG		0x10
 #define SW64_BPF_OPCODE_ALU_IMM		0x12
+#define SW64_BPF_OPCODE_LDBU		0x20
+#define SW64_BPF_OPCODE_LDHU		0x21
+#define SW64_BPF_OPCODE_LDW		0x22
+#define SW64_BPF_OPCODE_LDL		0x23
+#define SW64_BPF_OPCODE_STB		0x28
+#define SW64_BPF_OPCODE_STH		0x29
+#define SW64_BPF_OPCODE_STW		0x2A
+#define SW64_BPF_OPCODE_STL		0x2B
+#define SW64_BPF_OPCODE_BEQ		0x30
+#define SW64_BPF_OPCODE_BNE		0x31
+#define SW64_BPF_OPCODE_BLT		0x32
+#define SW64_BPF_OPCODE_BLE		0x33
+#define SW64_BPF_OPCODE_BGT		0x34
+#define SW64_BPF_OPCODE_BGE		0x35
+#define SW64_BPF_OPCODE_BLBC		0x36
+#define SW64_BPF_OPCODE_BLBS		0x37
+#define SW64_BPF_OPCODE_LDI		0x3E
+#define SW64_BPF_OPCODE_LDIH		0x3F
+
+/* SW64 MISC instructions function codes */
+#define SW64_BPF_FUNC_MISC_RD_F		0x1000
+#define SW64_BPF_FUNC_MISC_WR_F		0x1020
 
+/* SW64 LOCK instructions function codes */
+#define SW64_BPF_FUNC_LOCK_LLDW		0x0
+#define SW64_BPF_FUNC_LOCK_LLDL		0x1
+#define SW64_BPF_FUNC_LOCK_LSTW		0x8
+#define SW64_BPF_FUNC_LOCK_LSTL		0x9
+
+/* SW64 ALU instructions function codes */
 #define SW64_BPF_FUNC_ALU_ADDW		0x00
 #define SW64_BPF_FUNC_ALU_SUBW		0x01
 #define SW64_BPF_FUNC_ALU_ADDL		0x08
 #define SW64_BPF_FUNC_ALU_SUBL		0x09
 #define SW64_BPF_FUNC_ALU_MULW		0x10
 #define SW64_BPF_FUNC_ALU_MULL		0x18
+#define SW64_BPF_FUNC_ALU_CMPEQ		0x28
+#define SW64_BPF_FUNC_ALU_CMPLT		0x29
+#define SW64_BPF_FUNC_ALU_CMPLE		0x2A
+#define SW64_BPF_FUNC_ALU_CMPULT	0x2B
+#define SW64_BPF_FUNC_ALU_CMPULE	0x2C
+#define SW64_BPF_FUNC_ALU_AND		0x38
+#define SW64_BPF_FUNC_ALU_BIC		0x39
+#define SW64_BPF_FUNC_ALU_BIS		0x3A
+#define SW64_BPF_FUNC_ALU_ORNOT		0x3B
+#define SW64_BPF_FUNC_ALU_XOR		0x3C
+#define SW64_BPF_FUNC_ALU_EQV		0x3D
+#define SW64_BPF_FUNC_ALU_SLL		0x48
+#define SW64_BPF_FUNC_ALU_SRL		0x49
+#define SW64_BPF_FUNC_ALU_SRA		0x4A
 #define SW64_BPF_FUNC_ALU_ZAP		0x68
 #define SW64_BPF_FUNC_ALU_ZAPNOT	0x69
 #define SW64_BPF_FUNC_ALU_SEXTB		0x6A
 #define SW64_BPF_FUNC_ALU_SEXTH		0x6B
 
-#define SW64_BPF_OPCODE_BS_REG		0x10
-#define SW64_BPF_OPCODE_BS_IMM		0x12
-
-#define SW64_BPF_FUNC_BS_SLL		0x48
-#define SW64_BPF_FUNC_BS_SRL		0x49
-#define SW64_BPF_FUNC_BS_SRA		0x4A
-
-#define SW64_BPF_OPCODE_LOGIC_REG	0x10
-#define SW64_BPF_OPCODE_LOGIC_IMM	0x12
-
-#define SW64_BPF_FUNC_LOGIC_AND		0x38
-#define SW64_BPF_FUNC_LOGIC_BIC		0x39
-#define SW64_BPF_FUNC_LOGIC_BIS		0x3A
-#define SW64_BPF_FUNC_LOGIC_ORNOT	0x3B
-#define SW64_BPF_FUNC_LOGIC_XOR		0x3C
-#define SW64_BPF_FUNC_LOGIC_EQV		0x3D
-
-#define SW64_BPF_OPCODE_CMP_REG		0x10
-#define SW64_BPF_OPCODE_CMP_IMM		0x12
-
-#define SW64_BPF_FUNC_CMP_EQ		0x28
-#define SW64_BPF_FUNC_CMP_LT		0x29
-#define SW64_BPF_FUNC_CMP_LE		0x2A
-#define SW64_BPF_FUNC_CMP_ULT		0x2B
-#define SW64_BPF_FUNC_CMP_ULE		0x2C
-
 /* special instuction used in jit_fill_hole() */
-#define SW64_BPF_ILLEGAL_INSN	((1 << 25) | 0x80)
+#define SW64_BPF_ILLEGAL_INSN	(0x1ff00000)	/* pri_ret/b	$31 */
 
 enum sw64_bpf_registers {
 	SW64_BPF_REG_V0		= 0,	/* keep return value */
@@ -135,25 +137,45 @@ enum sw64_bpf_registers {
 
 /* SW64 load and store instructions */
 #define SW64_BPF_LDBU(dst, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_LDBU, dst, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LDBU, dst, rb, offset16)
 #define SW64_BPF_LDHU(dst, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_LDHU, dst, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LDHU, dst, rb, offset16)
 #define SW64_BPF_LDW(dst, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_LDW, dst, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LDW, dst, rb, offset16)
 #define SW64_BPF_LDL(dst, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_LDL, dst, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LDL, dst, rb, offset16)
 #define SW64_BPF_STB(src, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_STB, src, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_STB, src, rb, offset16)
 #define SW64_BPF_STH(src, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_STH, src, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_STH, src, rb, offset16)
 #define SW64_BPF_STW(src, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_STW, src, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_STW, src, rb, offset16)
 #define SW64_BPF_STL(src, rb, offset16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_STL, src, rb, offset16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_STL, src, rb, offset16)
 #define SW64_BPF_LDI(dst, rb, imm16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_LDI, dst, rb, imm16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LDI, dst, rb, imm16)
 #define SW64_BPF_LDIH(dst, rb, imm16) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LS_LDIH, dst, rb, imm16)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_LDIH, dst, rb, imm16)
+
+/* SW64 lock instructions */
+#define SW64_BPF_LLDW(ra, rb, offset16) \
+	sw64_bpf_gen_format_ls_func(SW64_BPF_OPCODE_LOCK, \
+			ra, rb, offset16, SW64_BPF_FUNC_LOCK_LLDW)
+#define SW64_BPF_LLDL(ra, rb, offset16) \
+	sw64_bpf_gen_format_ls_func(SW64_BPF_OPCODE_LOCK, \
+			ra, rb, offset16, SW64_BPF_FUNC_LOCK_LLDL)
+#define SW64_BPF_LSTW(ra, rb, offset16) \
+	sw64_bpf_gen_format_ls_func(SW64_BPF_OPCODE_LOCK, \
+			ra, rb, offset16, SW64_BPF_FUNC_LOCK_LSTW)
+#define SW64_BPF_LSTL(ra, rb, offset16) \
+	sw64_bpf_gen_format_ls_func(SW64_BPF_OPCODE_LOCK, \
+			ra, rb, offset16, SW64_BPF_FUNC_LOCK_LSTL)
+#define SW64_BPF_RD_F(ra) \
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_MISC, \
+			ra, SW64_BPF_REG_ZR, SW64_BPF_FUNC_MISC_RD_F)
+#define SW64_BPF_WR_F(ra) \
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_MISC, \
+			ra, SW64_BPF_REG_ZR, SW64_BPF_FUNC_MISC_WR_F)
 
 /* SW64 ALU instructions REG format */
 #define SW64_BPF_ADDW_REG(ra, rb, dst) \
@@ -182,10 +204,10 @@ enum sw64_bpf_registers {
 			ra, rb, dst, SW64_BPF_FUNC_ALU_ZAPNOT)
 #define SW64_BPF_SEXTB_REG(rb, dst) \
 	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
-			0, rb, dst, SW64_BPF_FUNC_ALU_SEXTB)
+			SW64_BPF_REG_ZR, rb, dst, SW64_BPF_FUNC_ALU_SEXTB)
 #define SW64_BPF_SEXTH_REG(rb, dst) \
 	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
-			0, rb, dst, SW64_BPF_FUNC_ALU_SEXTH)
+			SW64_BPF_REG_ZR, rb, dst, SW64_BPF_FUNC_ALU_SEXTH)
 
 /* SW64 ALU instructions IMM format */
 #define SW64_BPF_ADDW_IMM(ra, imm8, dst) \
@@ -214,130 +236,133 @@ enum sw64_bpf_registers {
 			ra, imm8, dst, SW64_BPF_FUNC_ALU_ZAPNOT)
 #define SW64_BPF_SEXTB_IMM(imm8, dst) \
 	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
-			0, imm8, dst, SW64_BPF_FUNC_ALU_SEXTB)
+			SW64_BPF_REG_ZR, imm8, dst, SW64_BPF_FUNC_ALU_SEXTB)
+#define SW64_BPF_SEXTH_IMM(imm8, dst) \
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			SW64_BPF_REG_ZR, imm8, dst, SW64_BPF_FUNC_ALU_SEXTH)
 
 /* SW64 bit shift instructions REG format */
 #define SW64_BPF_SLL_REG(src, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_BS_REG, \
-			src, rb, dst, SW64_BPF_FUNC_BS_SLL)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			src, rb, dst, SW64_BPF_FUNC_ALU_SLL)
 #define SW64_BPF_SRL_REG(src, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_BS_REG, \
-			src, rb, dst, SW64_BPF_FUNC_BS_SRL)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			src, rb, dst, SW64_BPF_FUNC_ALU_SRL)
 #define SW64_BPF_SRA_REG(src, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_BS_REG, \
-			src, rb, dst, SW64_BPF_FUNC_BS_SRA)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			src, rb, dst, SW64_BPF_FUNC_ALU_SRA)
 
 /* SW64 bit shift instructions IMM format */
 #define SW64_BPF_SLL_IMM(src, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_BS_IMM, \
-			src, imm8, dst, SW64_BPF_FUNC_BS_SLL)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			src, imm8, dst, SW64_BPF_FUNC_ALU_SLL)
 #define SW64_BPF_SRL_IMM(src, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_BS_IMM, \
-			src, imm8, dst, SW64_BPF_FUNC_BS_SRL)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			src, imm8, dst, SW64_BPF_FUNC_ALU_SRL)
 #define SW64_BPF_SRA_IMM(src, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_BS_IMM, \
-			src, imm8, dst, SW64_BPF_FUNC_BS_SRA)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			src, imm8, dst, SW64_BPF_FUNC_ALU_SRA)
 
 /* SW64 control instructions */
 #define SW64_BPF_CALL(ra, rb) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_BR_CALL, ra, rb, 0)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_CALL, ra, rb, 0)
 #define SW64_BPF_RET(rb) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_BR_RET, SW64_BPF_REG_ZR, rb, 0)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_RET, SW64_BPF_REG_ZR, rb, 0)
 #define SW64_BPF_JMP(ra, rb) \
-	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_BR_JMP, ra, rb, 0)
+	sw64_bpf_gen_format_ls(SW64_BPF_OPCODE_JMP, ra, rb, 0)
 #define SW64_BPF_BR(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BR, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR, ra, offset)
 #define SW64_BPF_BSR(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BSR, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BSR, ra, offset)
 #define SW64_BPF_BEQ(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BEQ, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BEQ, ra, offset)
 #define SW64_BPF_BNE(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BNE, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BNE, ra, offset)
 #define SW64_BPF_BLT(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BLT, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BLT, ra, offset)
 #define SW64_BPF_BLE(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BLE, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BLE, ra, offset)
 #define SW64_BPF_BGT(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BGT, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BGT, ra, offset)
 #define SW64_BPF_BGE(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BGE, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BGE, ra, offset)
 #define SW64_BPF_BLBC(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BLBC, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BLBC, ra, offset)
 #define SW64_BPF_BLBS(ra, offset) \
-	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BR_BLBS, ra, offset)
+	sw64_bpf_gen_format_br(SW64_BPF_OPCODE_BLBS, ra, offset)
 
 /* SW64 bit logic instructions REG format */
 #define SW64_BPF_AND_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_LOGIC_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_LOGIC_AND)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_AND)
 #define SW64_BPF_ANDNOT_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_LOGIC_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_LOGIC_BIC)
-#define SW64_BPF_OR_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_LOGIC_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_LOGIC_BIS)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_BIC)
+#define SW64_BPF_BIS_REG(ra, rb, dst) \
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_BIS)
 #define SW64_BPF_ORNOT_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_LOGIC_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_LOGIC_ORNOT)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_ORNOT)
 #define SW64_BPF_XOR_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_LOGIC_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_LOGIC_XOR)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_XOR)
 #define SW64_BPF_EQV_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_LOGIC_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_LOGIC_EQV)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_EQV)
 
 /* SW64 bit logic instructions IMM format */
 #define SW64_BPF_AND_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_LOGIC_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_LOGIC_AND)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_AND)
 #define SW64_BPF_ANDNOT_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_LOGIC_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_LOGIC_BIC)
-#define SW64_BPF_OR_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_LOGIC_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_LOGIC_BIS)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_BIC)
+#define SW64_BPF_BIS_IMM(ra, imm8, dst) \
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_BIS)
 #define SW64_BPF_ORNOT_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_LOGIC_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_LOGIC_ORNOT)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_ORNOT)
 #define SW64_BPF_XOR_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_LOGIC_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_LOGIC_XOR)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_XOR)
 #define SW64_BPF_EQV_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_LOGIC_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_LOGIC_EQV)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_EQV)
 
 /* SW64 compare instructions REG format */
 #define SW64_BPF_CMPEQ_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_CMP_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_CMP_EQ)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_CMPEQ)
 #define SW64_BPF_CMPLT_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_CMP_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_CMP_LT)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_CMPLT)
 #define SW64_BPF_CMPLE_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_CMP_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_CMP_LE)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_CMPLE)
 #define SW64_BPF_CMPULT_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_CMP_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_CMP_ULT)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_CMPULT)
 #define SW64_BPF_CMPULE_REG(ra, rb, dst) \
-	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_CMP_REG, \
-			ra, rb, dst, SW64_BPF_FUNC_CMP_ULE)
+	sw64_bpf_gen_format_simple_alu_reg(SW64_BPF_OPCODE_ALU_REG, \
+			ra, rb, dst, SW64_BPF_FUNC_ALU_CMPULE)
 
 /* SW64 compare instructions imm format */
 #define SW64_BPF_CMPEQ_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_CMP_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_CMP_EQ)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_CMPEQ)
 #define SW64_BPF_CMPLT_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_CMP_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_CMP_LT)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_CMPLT)
 #define SW64_BPF_CMPLE_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_CMP_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_CMP_LE)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_CMPLE)
 #define SW64_BPF_CMPULT_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_CMP_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_CMP_ULT)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_CMPULT)
 #define SW64_BPF_CMPULE_IMM(ra, imm8, dst) \
-	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_CMP_IMM, \
-			ra, imm8, dst, SW64_BPF_FUNC_CMP_ULE)
+	sw64_bpf_gen_format_simple_alu_imm(SW64_BPF_OPCODE_ALU_IMM, \
+			ra, imm8, dst, SW64_BPF_FUNC_ALU_CMPULE)
 
 #endif /* _SW64_BPF_JIT_H */

drivers/cpufreq/sw64_cpufreq.c

@@ -40,10 +40,8 @@ static int sw64_cpu_freq_notifier(struct notifier_block *nb,
 	unsigned long cpu;
 
 	for_each_online_cpu(cpu) {
-		if (val == CPUFREQ_POSTCHANGE) {
+		if (val == CPUFREQ_POSTCHANGE)
 			sw64_update_clockevents(cpu, freqs->new * 1000);
-			current_cpu_data.loops_per_jiffy = loops_per_jiffy;
-		}
 	}
 
 	return 0;
@@ -59,7 +57,7 @@ static unsigned int sw64_cpufreq_get(unsigned int cpu)
 		return 0;
 	}
 
-	return sw64_clk_get_rate(policy->clk);
+	return __sw64_cpufreq_get(policy) * 1000;
 }
 
 /*
@@ -70,12 +68,12 @@ static int sw64_cpufreq_target(struct cpufreq_policy *policy,
 {
 	unsigned long freq;
 
-	freq = (get_cpu_freq() / 1000) * index / 48;
+	freq = 50000 * index;
 
 	sw64_store_policy(policy);
 
 	/* setting the cpu frequency */
-	sw64_set_rate(-1, freq * 1000);
+	sw64_set_rate(freq * 1000);
 
 	return 0;
 }
@@ -100,7 +98,7 @@ static int sw64_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		if (sw64_clockmod_table[i].frequency == 0)
 			sw64_clockmod_table[i].frequency = (rate * i) / 48;
 
-	sw64_set_rate(-1, rate * 1000);
+	sw64_set_rate(rate * 1000);
 
 	policy->clk = cpuclk;
 

drivers/firmware/efi/sunway-init.c

@@ -25,8 +25,6 @@
 
 #include <asm/efi.h>
 
-extern bool __virt_addr_valid(unsigned long x);
-
 static int __init is_memory(efi_memory_desc_t *md)
 {
 	if (md->attribute & (EFI_MEMORY_WB|EFI_MEMORY_WT|EFI_MEMORY_WC))
@@ -128,23 +126,7 @@ static __init int is_usable_memory(efi_memory_desc_t *md)
 	}
 	return false;
 }
-static __initdata char memory_type_name1[][20] = {
-	"Reserved",
-	"Loader Code",
-	"Loader Data",
-	"Boot Code",
-	"Boot Data",
-	"Runtime Code",
-	"Runtime Data",
-	"Conventional Memory",
-	"Unusable Memory",
-	"ACPI Reclaim Memory",
-	"ACPI Memory NVS",
-	"Memory Mapped I/O",
-	"MMIO Port Space",
-	"PAL Code",
-	"Persistent Memory",
-};
+
 static __init void reserve_regions(void)
 {
 	efi_memory_desc_t *md;
@@ -157,22 +139,6 @@ static __init void reserve_regions(void)
 		paddr = md->phys_addr;
 		npages = md->num_pages;
 
-		if (!__virt_addr_valid(paddr))
-			continue;
-
-		if (md->type >= ARRAY_SIZE(memory_type_name1))
-			continue;
-
-		if (md->attribute & ~(EFI_MEMORY_UC | EFI_MEMORY_WC | EFI_MEMORY_WT |
-					EFI_MEMORY_WB | EFI_MEMORY_UCE | EFI_MEMORY_RO |
-					EFI_MEMORY_WP | EFI_MEMORY_RP | EFI_MEMORY_XP |
-					EFI_MEMORY_NV |
-					EFI_MEMORY_RUNTIME | EFI_MEMORY_MORE_RELIABLE))
-			continue;
-
-		if (strncmp(memory_type_name1[md->type], "Reserved", 8) == 0)
-			continue;
-
 		if (efi_enabled(EFI_DBG)) {
 			char buf[64];
 

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c

@@ -2816,7 +2816,11 @@ static int gfx_v7_0_mec_init(struct amdgpu_device *adev)
 	}
 
 	/* clear memory.  Not sure if this is required or not */
+#if IS_ENABLED(CONFIG_SW64)
+	memset_io(hpd, 0, mec_hpd_size);
+#else
 	memset(hpd, 0, mec_hpd_size);
+#endif
 
 	amdgpu_bo_kunmap(adev->gfx.mec.hpd_eop_obj);
 	amdgpu_bo_unreserve(adev->gfx.mec.hpd_eop_obj);
@@ -2926,7 +2930,11 @@ static void gfx_v7_0_mqd_init(struct amdgpu_device *adev,
 	u64 wb_gpu_addr;
 
 	/* init the mqd struct */
+#if IS_ENABLED(CONFIG_SW64)
+	memset_io(mqd, 0, sizeof(struct cik_mqd));
+#else
 	memset(mqd, 0, sizeof(struct cik_mqd));
+#endif
 
 	mqd->header = 0xC0310800;
 	mqd->compute_static_thread_mgmt_se0 = 0xffffffff;

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -4641,8 +4641,13 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring)
 
 	if (amdgpu_in_reset(adev)) { /* for GPU_RESET case */
 		/* reset MQD to a clean status */
-		if (adev->gfx.mec.mqd_backup[mqd_idx])
+		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_toio(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct vi_mqd_allocation));
+#else
 			memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct vi_mqd_allocation));
+#endif
+		}
 
 		/* reset ring buffer */
 		ring->wptr = 0;
@@ -4667,12 +4672,13 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring)
 		vi_srbm_select(adev, 0, 0, 0, 0);
 		mutex_unlock(&adev->srbm_mutex);
 
-		if (adev->gfx.mec.mqd_backup[mqd_idx])
+		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
 #if IS_ENABLED(CONFIG_SW64)
 			memcpy_fromio(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct vi_mqd_allocation));
 #else
 			memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct vi_mqd_allocation));
 #endif
+		}
 	}
 
 	return 0;
@@ -4685,7 +4691,11 @@ static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring)
 	int mqd_idx = ring - &adev->gfx.compute_ring[0];
 
 	if (!amdgpu_in_reset(adev) && !adev->in_suspend) {
+#if IS_ENABLED(CONFIG_SW64)
+		memset_io((void *)mqd, 0, sizeof(struct vi_mqd_allocation));
+#else
 		memset((void *)mqd, 0, sizeof(struct vi_mqd_allocation));
+#endif
 		((struct vi_mqd_allocation *)mqd)->dynamic_cu_mask = 0xFFFFFFFF;
 		((struct vi_mqd_allocation *)mqd)->dynamic_rb_mask = 0xFFFFFFFF;
 		mutex_lock(&adev->srbm_mutex);
@@ -4694,12 +4704,23 @@ static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring)
 		vi_srbm_select(adev, 0, 0, 0, 0);
 		mutex_unlock(&adev->srbm_mutex);
 
-		if (adev->gfx.mec.mqd_backup[mqd_idx])
+		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_fromio(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct vi_mqd_allocation));
+#else
 			memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct vi_mqd_allocation));
+#endif
+		}
 	} else if (amdgpu_in_reset(adev)) { /* for GPU_RESET case */
 		/* reset MQD to a clean status */
-		if (adev->gfx.mec.mqd_backup[mqd_idx])
+		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_toio(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct vi_mqd_allocation));
+#else
 			memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct vi_mqd_allocation));
+#endif
+		}
+
 		/* reset ring buffer */
 		ring->wptr = 0;
 		amdgpu_ring_clear_ring(ring);

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -1978,7 +1978,11 @@ static int gfx_v9_0_mec_init(struct amdgpu_device *adev)
 			return r;
 		}
 
+#if IS_ENABLED(CONFIG_SW64)
+		memset_io(hpd, 0, mec_hpd_size);
+#else
 		memset(hpd, 0, mec_hpd_size);
+#endif
 
 		amdgpu_bo_kunmap(adev->gfx.mec.hpd_eop_obj);
 		amdgpu_bo_unreserve(adev->gfx.mec.hpd_eop_obj);
@@ -3724,10 +3728,11 @@ static int gfx_v9_0_kiq_init_queue(struct amdgpu_ring *ring)
 	if (amdgpu_in_reset(adev)) { /* for GPU_RESET case */
 		/* reset MQD to a clean status */
 		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
-			if (IS_ENABLED(CONFIG_SW64))
-				memcpy_toio(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct v9_mqd_allocation));
-			else
-				memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct v9_mqd_allocation));
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_toio(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct v9_mqd_allocation));
+#else
+			memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct v9_mqd_allocation));
+#endif
 		}
 
 		/* reset ring buffer */
@@ -3740,7 +3745,11 @@ static int gfx_v9_0_kiq_init_queue(struct amdgpu_ring *ring)
 		soc15_grbm_select(adev, 0, 0, 0, 0);
 		mutex_unlock(&adev->srbm_mutex);
 	} else {
+#if IS_ENABLED(CONFIG_SW64)
+		memset_io((void *)mqd, 0, sizeof(struct v9_mqd_allocation));
+#else
 		memset((void *)mqd, 0, sizeof(struct v9_mqd_allocation));
+#endif
 		((struct v9_mqd_allocation *)mqd)->dynamic_cu_mask = 0xFFFFFFFF;
 		((struct v9_mqd_allocation *)mqd)->dynamic_rb_mask = 0xFFFFFFFF;
 		mutex_lock(&adev->srbm_mutex);
@@ -3751,10 +3760,11 @@ static int gfx_v9_0_kiq_init_queue(struct amdgpu_ring *ring)
 		mutex_unlock(&adev->srbm_mutex);
 
 		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
-			if (IS_ENABLED(CONFIG_SW64))
-				memcpy_fromio(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct v9_mqd_allocation));
-			else
-				memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct v9_mqd_allocation));
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_fromio(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct v9_mqd_allocation));
+#else
+			memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct v9_mqd_allocation));
+#endif
 		}
 	}
 
@@ -3768,7 +3778,11 @@ static int gfx_v9_0_kcq_init_queue(struct amdgpu_ring *ring)
 	int mqd_idx = ring - &adev->gfx.compute_ring[0];
 
 	if (!amdgpu_in_reset(adev) && !adev->in_suspend) {
+#if IS_ENABLED(CONFIG_SW64)
+		memset_io((void *)mqd, 0, sizeof(struct v9_mqd_allocation));
+#else
 		memset((void *)mqd, 0, sizeof(struct v9_mqd_allocation));
+#endif
 		((struct v9_mqd_allocation *)mqd)->dynamic_cu_mask = 0xFFFFFFFF;
 		((struct v9_mqd_allocation *)mqd)->dynamic_rb_mask = 0xFFFFFFFF;
 		mutex_lock(&adev->srbm_mutex);
@@ -3778,11 +3792,23 @@ static int gfx_v9_0_kcq_init_queue(struct amdgpu_ring *ring)
 		mutex_unlock(&adev->srbm_mutex);
 
 		if (adev->gfx.mec.mqd_backup[mqd_idx])
+		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_fromio(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct v9_mqd_allocation));
+#else
 			memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct v9_mqd_allocation));
+#endif
+		}
 	} else if (amdgpu_in_reset(adev)) { /* for GPU_RESET case */
 		/* reset MQD to a clean status */
 		if (adev->gfx.mec.mqd_backup[mqd_idx])
+		if (adev->gfx.mec.mqd_backup[mqd_idx]) {
+#if IS_ENABLED(CONFIG_SW64)
+			memcpy_toio(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct v9_mqd_allocation));
+#else
 			memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(struct v9_mqd_allocation));
+#endif
+		}
 
 		/* reset ring buffer */
 		ring->wptr = 0;

drivers/iommu/sw64/sunway_iommu.c

@@ -1382,7 +1382,7 @@ static struct iommu_domain *sunway_iommu_domain_alloc(unsigned type)
 
 		sdomain->pt_root = (void *)get_zeroed_page(GFP_KERNEL);
 
-		sdomain->domain.geometry.aperture_start = SW64_DMA_START;
+		sdomain->domain.geometry.aperture_start = 0ULL;
 		sdomain->domain.geometry.aperture_end	= (~0ULL);
 		sdomain->domain.geometry.force_aperture	= true;
 		sdomain->type = IOMMU_DOMAIN_UNMANAGED;