arm64: rename functions that reference compat term

hulk inclusion
category: feature
bugzilla: NA
CVE: NA
---------------------------

The ILP32 for ARM64 patch series introduces another 'compat' mode additionally
to aarch32_el0. So to avoid confusing, aarch32-only functions renamed in
according to it.
Signed-off-by: NYury Norov <ynorov@caviumnetworks.com>

 Conflicts:
	arch/arm64/kernel/cpufeature.c
	arch/arm64/kernel/sys32.c
	arch/arm64/kernel/sys_compat.c
	arch/arm64/kernel/syscall.c
	arch/arm64/kernel/traps.c

[wangxiongfeng: conflicts because of the following commit.
acf2a6efa arm64: use the correct function type for
__arm64_sys_ni_syscall
f5b984c22 arm64: compat: Don't pull syscall number from regs in
arm_compat_syscall
119703e85 arm64: cpufeature: Set the FP/SIMD compat HWCAP
So we only change 'compat_*' to 'a32_*'.

6a605e36 arm64: Force SSBS on context switch
Above commit add 'compat_user_mode()' in 'ssbs_thread_switch()'. We also
need to change it.
]
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NHanjun Guo &lt;guohanjun@huawei.com <mailto:guohanjun@huawei.com&gt;>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/arm64/include/asm/ptrace.h

@@ -208,16 +208,16 @@ static inline void forget_syscall(struct pt_regs *regs)
 #define arch_has_single_step()	(1)
 
 #ifdef CONFIG_AARCH32_EL0
-#define compat_thumb_mode(regs) \
+#define a32_thumb_mode(regs) \
 	(((regs)->pstate & PSR_AA32_T_BIT))
 #else
-#define compat_thumb_mode(regs) (0)
+#define a32_thumb_mode(regs) (0)
 #endif
 
 #define user_mode(regs)	\
 	(((regs)->pstate & PSR_MODE_MASK) == PSR_MODE_EL0t)
 
-#define compat_user_mode(regs)	\
+#define a32_user_mode(regs)	\
 	(((regs)->pstate & (PSR_MODE32_BIT | PSR_MODE_MASK)) == \
 	 (PSR_MODE32_BIT | PSR_MODE_EL0t))
 
@@ -236,10 +236,10 @@ static inline void forget_syscall(struct pt_regs *regs)
 	(!((regs)->pstate & PSR_F_BIT))
 
 #define GET_USP(regs) \
-	(!compat_user_mode(regs) ? (regs)->sp : (regs)->compat_sp)
+	(!a32_user_mode(regs) ? (regs)->sp : (regs)->compat_sp)
 
 #define SET_USP(ptregs, value) \
-	(!compat_user_mode(regs) ? ((regs)->sp = value) : ((regs)->compat_sp = value))
+	(!a32_user_mode(regs) ? ((regs)->sp = value) : ((regs)->compat_sp = value))
 
 extern int regs_query_register_offset(const char *name);
 extern unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,

arch/arm64/include/asm/signal32.h

@@ -24,27 +24,28 @@
 
 #define AARCH32_KERN_SIGRET_CODE_OFFSET	0x500
 
-int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
+int a32_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
 		       struct pt_regs *regs);
-int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
+
+int a32_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
 			  struct pt_regs *regs);
 
-void compat_setup_restart_syscall(struct pt_regs *regs);
+void a32_setup_restart_syscall(struct pt_regs *regs);
 #else
 
-static inline int compat_setup_frame(int usid, struct ksignal *ksig,
+static inline int a32_setup_frame(int usid, struct ksignal *ksig,
 				     sigset_t *set, struct pt_regs *regs)
 {
 	return -ENOSYS;
 }
 
-static inline int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
+static inline int a32_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
 					struct pt_regs *regs)
 {
 	return -ENOSYS;
 }
 
-static inline void compat_setup_restart_syscall(struct pt_regs *regs)
+static inline void a32_setup_restart_syscall(struct pt_regs *regs)
 {
 }
 #endif /* CONFIG_AARCH32_EL0 */

arch/arm64/include/asm/syscall.h

@@ -25,7 +25,7 @@ typedef long (*syscall_fn_t)(const struct pt_regs *regs);
 extern const syscall_fn_t sys_call_table[];
 
 #ifdef CONFIG_AARCH32_EL0
-extern const syscall_fn_t compat_sys_call_table[];
+extern const syscall_fn_t a32_sys_call_table[];
 #endif
 
 static inline int syscall_get_nr(struct task_struct *task,

arch/arm64/kernel/armv8_deprecated.c

@@ -559,7 +559,7 @@ static int setend_set_hw_mode(bool enable)
 	return 0;
 }
 
-static int compat_setend_handler(struct pt_regs *regs, u32 big_endian)
+static int __a32_setend_handler(struct pt_regs *regs, u32 big_endian)
 {
 	char *insn;
 
@@ -582,14 +582,14 @@ static int compat_setend_handler(struct pt_regs *regs, u32 big_endian)
 
 static int a32_setend_handler(struct pt_regs *regs, u32 instr)
 {
-	int rc = compat_setend_handler(regs, (instr >> 9) & 1);
+	int rc = __a32_setend_handler(regs, (instr >> 9) & 1);
 	arm64_skip_faulting_instruction(regs, 4);
 	return rc;
 }
 
 static int t16_setend_handler(struct pt_regs *regs, u32 instr)
 {
-	int rc = compat_setend_handler(regs, (instr >> 3) & 1);
+	int rc = __a32_setend_handler(regs, (instr >> 3) & 1);
 	arm64_skip_faulting_instruction(regs, 2);
 	return rc;
 }

arch/arm64/kernel/cpufeature.c

@@ -1597,7 +1597,7 @@ static bool compat_has_neon(const struct arm64_cpu_capabilities *cap, int scope)
 }
 #endif
 
-static const struct arm64_cpu_capabilities compat_elf_hwcaps[] = {
+static const struct arm64_cpu_capabilities a32_elf_hwcaps[] = {
 #ifdef CONFIG_AARCH32_EL0
 	HWCAP_CAP_MATCH(compat_has_neon, CAP_COMPAT_HWCAP, COMPAT_HWCAP_NEON),
 	HWCAP_CAP(SYS_MVFR1_EL1, MVFR1_SIMDFMAC_SHIFT, FTR_UNSIGNED, 1, CAP_COMPAT_HWCAP, COMPAT_HWCAP_VFPv4),
@@ -1896,7 +1896,7 @@ static void verify_local_cpu_capabilities(void)
 	verify_local_elf_hwcaps(arm64_elf_hwcaps);
 
 	if (system_supports_32bit_el0())
-		verify_local_elf_hwcaps(compat_elf_hwcaps);
+		verify_local_elf_hwcaps(a32_elf_hwcaps);
 
 	if (system_supports_sve())
 		verify_sve_features();
@@ -1967,7 +1967,7 @@ void __init setup_cpu_features(void)
 	setup_elf_hwcaps(arm64_elf_hwcaps);
 
 	if (system_supports_32bit_el0())
-		setup_elf_hwcaps(compat_elf_hwcaps);
+		setup_elf_hwcaps(a32_elf_hwcaps);
 
 	if (system_uses_ttbr0_pan())
 		pr_info("emulated: Privileged Access Never (PAN) using TTBR0_EL1 switching\n");

arch/arm64/kernel/debug-monitors.c

@@ -343,10 +343,10 @@ int aarch32_break_handler(struct pt_regs *regs)
 	bool bp = false;
 	void __user *pc = (void __user *)instruction_pointer(regs);
 
-	if (!compat_user_mode(regs))
+	if (!a32_user_mode(regs))
 		return -EFAULT;
 
-	if (compat_thumb_mode(regs)) {
+	if (a32_thumb_mode(regs)) {
 		/* get 16-bit Thumb instruction */
 		__le16 instr;
 		get_user(instr, (__le16 __user *)pc);

arch/arm64/kernel/perf_callchain.c

@@ -64,21 +64,21 @@ user_backtrace(struct frame_tail __user *tail,
  * The registers we're interested in are at the end of the variable
  * length saved register structure. The fp points at the end of this
  * structure so the address of this struct is:
- * (struct compat_frame_tail *)(xxx->fp)-1
+ * (struct a32_frame_tail *)(xxx->fp)-1
  *
  * This code has been adapted from the ARM OProfile support.
  */
-struct compat_frame_tail {
-	compat_uptr_t	fp; /* a (struct compat_frame_tail *) in compat mode */
+struct a32_frame_tail {
+	compat_uptr_t	fp; /* a (struct a32_frame_tail *) in compat mode */
 	u32		sp;
 	u32		lr;
 } __attribute__((packed));
 
-static struct compat_frame_tail __user *
-compat_user_backtrace(struct compat_frame_tail __user *tail,
+static struct a32_frame_tail __user *
+compat_user_backtrace(struct a32_frame_tail __user *tail,
 		      struct perf_callchain_entry_ctx *entry)
 {
-	struct compat_frame_tail buftail;
+	struct a32_frame_tail buftail;
 	unsigned long err;
 
 	/* Also check accessibility of one struct frame_tail beyond */
@@ -98,11 +98,11 @@ compat_user_backtrace(struct compat_frame_tail __user *tail,
 	 * Frame pointers should strictly progress back up the stack
 	 * (towards higher addresses).
 	 */
-	if (tail + 1 >= (struct compat_frame_tail __user *)
+	if (tail + 1 >= (struct a32_frame_tail __user *)
 			compat_ptr(buftail.fp))
 		return NULL;
 
-	return (struct compat_frame_tail __user *)compat_ptr(buftail.fp) - 1;
+	return (struct a32_frame_tail __user *)compat_ptr(buftail.fp) - 1;
 }
 #endif /* CONFIG_AARCH32_EL0 */
 
@@ -116,7 +116,7 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry,
 
 	perf_callchain_store(entry, regs->pc);
 
-	if (!compat_user_mode(regs)) {
+	if (!a32_user_mode(regs)) {
 		/* AARCH64 mode */
 		struct frame_tail __user *tail;
 
@@ -128,9 +128,9 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry,
 	} else {
 #ifdef CONFIG_AARCH32_EL0
 		/* AARCH32 compat mode */
-		struct compat_frame_tail __user *tail;
+		struct a32_frame_tail __user *tail;
 
-		tail = (struct compat_frame_tail __user *)regs->compat_fp - 1;
+		tail = (struct a32_frame_tail __user *)regs->compat_fp - 1;
 
 		while ((entry->nr < entry->max_stack) &&
 			tail && !((unsigned long)tail & 0x3))

arch/arm64/kernel/perf_regs.c

@@ -36,7 +36,7 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
 	 * At the time we make a sample, we don't know whether the consumer is
 	 * 32-bit or 64-bit, so we have to cater for both possibilities.
 	 */
-	if (compat_user_mode(regs)) {
+	if (a32_user_mode(regs)) {
 		if ((u32)idx == PERF_REG_ARM64_SP)
 			return regs->compat_sp;
 		if ((u32)idx == PERF_REG_ARM64_LR)

arch/arm64/kernel/process.c

@@ -220,7 +220,7 @@ static void print_pstate(struct pt_regs *regs)
 {
 	u64 pstate = regs->pstate;
 
-	if (compat_user_mode(regs)) {
+	if (a32_user_mode(regs)) {
 		printk("pstate: %08llx (%c%c%c%c %c %s %s %c%c%c)\n",
 			pstate,
 			pstate & PSR_AA32_N_BIT ? 'N' : 'n',
@@ -254,7 +254,7 @@ void __show_regs(struct pt_regs *regs)
 	int i, top_reg;
 	u64 lr, sp;
 
-	if (compat_user_mode(regs)) {
+	if (a32_user_mode(regs)) {
 		lr = regs->compat_lr;
 		sp = regs->compat_sp;
 		top_reg = 12;
@@ -477,7 +477,7 @@ static void ssbs_thread_switch(struct task_struct *next)
 	    test_tsk_thread_flag(next, TIF_SSBD))
 		return;
 
-	if (compat_user_mode(regs))
+	if (a32_user_mode(regs))
 		set_compat_ssbs_bit(regs);
 	else if (user_mode(regs))
 		set_ssbs_bit(regs);

arch/arm64/kernel/signal.c

@@ -791,7 +791,7 @@ static int setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
 static void setup_restart_syscall(struct pt_regs *regs)
 {
 	if (is_compat_task())
-		compat_setup_restart_syscall(regs);
+		a32_setup_restart_syscall(regs);
 	else
 		regs->regs[8] = __NR_restart_syscall;
 }
@@ -812,9 +812,9 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
 	 */
 	if (is_compat_task()) {
 		if (ksig->ka.sa.sa_flags & SA_SIGINFO)
-			ret = compat_setup_rt_frame(usig, ksig, oldset, regs);
+			ret = a32_setup_rt_frame(usig, ksig, oldset, regs);
 		else
-			ret = compat_setup_frame(usig, ksig, oldset, regs);
+			ret = a32_setup_frame(usig, ksig, oldset, regs);
 	} else {
 		ret = setup_rt_frame(usig, ksig, oldset, regs);
 	}
@@ -849,7 +849,7 @@ static void do_signal(struct pt_regs *regs)
 	 */
 	if (syscall) {
 		continue_addr = regs->pc;
-		restart_addr = continue_addr - (compat_thumb_mode(regs) ? 2 : 4);
+		restart_addr = continue_addr - (a32_thumb_mode(regs) ? 2 : 4);
 		retval = regs->regs[0];
 
 		/*

arch/arm64/kernel/signal32.c

@@ -30,7 +30,7 @@
 #include <linux/uaccess.h>
 #include <asm/unistd.h>
 
-struct compat_sigcontext {
+struct a32_sigcontext {
 	/* We always set these two fields to 0 */
 	compat_ulong_t			trap_no;
 	compat_ulong_t			error_code;
@@ -56,17 +56,17 @@ struct compat_sigcontext {
 	compat_ulong_t			fault_address;
 };
 
-struct compat_ucontext {
+struct a32_ucontext {
 	compat_ulong_t			uc_flags;
 	compat_uptr_t			uc_link;
 	compat_stack_t			uc_stack;
-	struct compat_sigcontext	uc_mcontext;
+	struct a32_sigcontext		uc_mcontext;
 	compat_sigset_t			uc_sigmask;
 	int		__unused[32 - (sizeof (compat_sigset_t) / sizeof (int))];
 	compat_ulong_t	uc_regspace[128] __attribute__((__aligned__(8)));
 };
 
-struct compat_vfp_sigframe {
+struct a32_vfp_sigframe {
 	compat_ulong_t	magic;
 	compat_ulong_t	size;
 	struct compat_user_vfp {
@@ -81,25 +81,25 @@ struct compat_vfp_sigframe {
 } __attribute__((__aligned__(8)));
 
 #define VFP_MAGIC		0x56465001
-#define VFP_STORAGE_SIZE	sizeof(struct compat_vfp_sigframe)
+#define VFP_STORAGE_SIZE	sizeof(struct a32_vfp_sigframe)
 
 #define FSR_WRITE_SHIFT		(11)
 
-struct compat_aux_sigframe {
-	struct compat_vfp_sigframe	vfp;
+struct a32_aux_sigframe {
+	struct a32_vfp_sigframe	vfp;
 
 	/* Something that isn't a valid magic number for any coprocessor.  */
 	unsigned long			end_magic;
 } __attribute__((__aligned__(8)));
 
-struct compat_sigframe {
-	struct compat_ucontext	uc;
+struct a32_sigframe {
+	struct a32_ucontext	uc;
 	compat_ulong_t		retcode[2];
 };
 
-struct compat_rt_sigframe {
+struct a32_rt_sigframe {
 	struct compat_siginfo info;
-	struct compat_sigframe sig;
+	struct a32_sigframe sig;
 };
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -130,7 +130,7 @@ static inline int get_sigset_t(sigset_t *set,
  * VFP save/restore code.
  *
  * We have to be careful with endianness, since the fpsimd context-switch
- * code operates on 128-bit (Q) register values whereas the compat ABI
+ * code operates on 128-bit (Q) register values whereas the a32 ABI
  * uses an array of 64-bit (D) registers. Consequently, we need to swap
  * the two halves of each Q register when running on a big-endian CPU.
  */
@@ -147,7 +147,7 @@ union __fpsimd_vreg {
 	};
 };
 
-static int compat_preserve_vfp_context(struct compat_vfp_sigframe __user *frame)
+static int a32_preserve_vfp_context(struct a32_vfp_sigframe __user *frame)
 {
 	struct user_fpsimd_state const *fpsimd =
 		&current->thread.uw.fpsimd_state;
@@ -197,7 +197,7 @@ static int compat_preserve_vfp_context(struct compat_vfp_sigframe __user *frame)
 	return err ? -EFAULT : 0;
 }
 
-static int compat_restore_vfp_context(struct compat_vfp_sigframe __user *frame)
+static int a32_restore_vfp_context(struct a32_vfp_sigframe __user *frame)
 {
 	struct user_fpsimd_state fpsimd;
 	compat_ulong_t magic = VFP_MAGIC;
@@ -237,12 +237,12 @@ static int compat_restore_vfp_context(struct compat_vfp_sigframe __user *frame)
 	return err ? -EFAULT : 0;
 }
 
-static int compat_restore_sigframe(struct pt_regs *regs,
-				   struct compat_sigframe __user *sf)
+static int a32_restore_sigframe(struct pt_regs *regs,
+				   struct a32_sigframe __user *sf)
 {
 	int err;
 	sigset_t set;
-	struct compat_aux_sigframe __user *aux;
+	struct a32_aux_sigframe __user *aux;
 	unsigned long psr;
 
 	err = get_sigset_t(&set, &sf->uc.uc_sigmask);
@@ -278,9 +278,9 @@ static int compat_restore_sigframe(struct pt_regs *regs,
 
 	err |= !valid_user_regs(&regs->user_regs, current);
 
-	aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace;
+	aux = (struct a32_aux_sigframe __user *) sf->uc.uc_regspace;
 	if (err == 0)
-		err |= compat_restore_vfp_context(&aux->vfp);
+		err |= a32_restore_vfp_context(&aux->vfp);
 
 	return err;
 }
@@ -288,7 +288,7 @@ static int compat_restore_sigframe(struct pt_regs *regs,
 COMPAT_SYSCALL_DEFINE0(sigreturn)
 {
 	struct pt_regs *regs = current_pt_regs();
-	struct compat_sigframe __user *frame;
+	struct a32_sigframe __user *frame;
 
 	/* Always make any pending restarted system calls return -EINTR */
 	current->restart_block.fn = do_no_restart_syscall;
@@ -301,12 +301,12 @@ COMPAT_SYSCALL_DEFINE0(sigreturn)
 	if (regs->compat_sp & 7)
 		goto badframe;
 
-	frame = (struct compat_sigframe __user *)regs->compat_sp;
+	frame = (struct a32_sigframe __user *)regs->compat_sp;
 
 	if (!access_ok(frame, sizeof (*frame)))
 		goto badframe;
 
-	if (compat_restore_sigframe(regs, frame))
+	if (a32_restore_sigframe(regs, frame))
 		goto badframe;
 
 	return regs->regs[0];
@@ -319,7 +319,7 @@ COMPAT_SYSCALL_DEFINE0(sigreturn)
 COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
 {
 	struct pt_regs *regs = current_pt_regs();
-	struct compat_rt_sigframe __user *frame;
+	struct a32_rt_sigframe __user *frame;
 
 	/* Always make any pending restarted system calls return -EINTR */
 	current->restart_block.fn = do_no_restart_syscall;
@@ -332,12 +332,12 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
 	if (regs->compat_sp & 7)
 		goto badframe;
 
-	frame = (struct compat_rt_sigframe __user *)regs->compat_sp;
+	frame = (struct a32_rt_sigframe __user *)regs->compat_sp;
 
 	if (!access_ok(frame, sizeof (*frame)))
 		goto badframe;
 
-	if (compat_restore_sigframe(regs, &frame->sig))
+	if (a32_restore_sigframe(regs, &frame->sig))
 		goto badframe;
 
 	if (compat_restore_altstack(&frame->sig.uc.uc_stack))
@@ -350,7 +350,7 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
 	return 0;
 }
 
-static void __user *compat_get_sigframe(struct ksignal *ksig,
+static void __user *a32_get_sigframe(struct ksignal *ksig,
 					struct pt_regs *regs,
 					int framesize)
 {
@@ -371,7 +371,7 @@ static void __user *compat_get_sigframe(struct ksignal *ksig,
 	return frame;
 }
 
-static void compat_setup_return(struct pt_regs *regs, struct k_sigaction *ka,
+static void a32_setup_return(struct pt_regs *regs, struct k_sigaction *ka,
 				compat_ulong_t __user *rc, void __user *frame,
 				int usig)
 {
@@ -415,10 +415,10 @@ static void compat_setup_return(struct pt_regs *regs, struct k_sigaction *ka,
 	regs->pstate	= spsr;
 }
 
-static int compat_setup_sigframe(struct compat_sigframe __user *sf,
+static int a32_setup_sigframe(struct a32_sigframe __user *sf,
 				 struct pt_regs *regs, sigset_t *set)
 {
-	struct compat_aux_sigframe __user *aux;
+	struct a32_aux_sigframe __user *aux;
 	unsigned long psr = pstate_to_compat_psr(regs->pstate);
 	int err = 0;
 
@@ -441,7 +441,7 @@ static int compat_setup_sigframe(struct compat_sigframe __user *sf,
 	__put_user_error(psr, &sf->uc.uc_mcontext.arm_cpsr, err);
 
 	__put_user_error((compat_ulong_t)0, &sf->uc.uc_mcontext.trap_no, err);
-	/* set the compat FSR WnR */
+	/* set the aarch32 FSR WnR */
 	__put_user_error(!!(current->thread.fault_code & ESR_ELx_WNR) <<
 			 FSR_WRITE_SHIFT, &sf->uc.uc_mcontext.error_code, err);
 	__put_user_error(current->thread.fault_address, &sf->uc.uc_mcontext.fault_address, err);
@@ -449,25 +449,25 @@ static int compat_setup_sigframe(struct compat_sigframe __user *sf,
 
 	err |= put_sigset_t(&sf->uc.uc_sigmask, set);
 
-	aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace;
+	aux = (struct a32_aux_sigframe __user *) sf->uc.uc_regspace;
 
 	if (err == 0)
-		err |= compat_preserve_vfp_context(&aux->vfp);
+		err |= a32_preserve_vfp_context(&aux->vfp);
 	__put_user_error(0, &aux->end_magic, err);
 
 	return err;
 }
 
 /*
- * 32-bit signal handling routines called from signal.c
+ * aarch32-bit signal handling routines called from signal.c
  */
-int compat_setup_rt_frame(int usig, struct ksignal *ksig,
+int a32_setup_rt_frame(int usig, struct ksignal *ksig,
 			  sigset_t *set, struct pt_regs *regs)
 {
-	struct compat_rt_sigframe __user *frame;
+	struct a32_rt_sigframe __user *frame;
 	int err = 0;
 
-	frame = compat_get_sigframe(ksig, regs, sizeof(*frame));
+	frame = a32_get_sigframe(ksig, regs, sizeof(*frame));
 
 	if (!frame)
 		return 1;
@@ -479,10 +479,10 @@ int compat_setup_rt_frame(int usig, struct ksignal *ksig,
 
 	err |= __compat_save_altstack(&frame->sig.uc.uc_stack, regs->compat_sp);
 
-	err |= compat_setup_sigframe(&frame->sig, regs, set);
+	err |= a32_setup_sigframe(&frame->sig, regs, set);
 
 	if (err == 0) {
-		compat_setup_return(regs, &ksig->ka, frame->sig.retcode, frame, usig);
+		a32_setup_return(regs, &ksig->ka, frame->sig.retcode, frame, usig);
 		regs->regs[1] = (compat_ulong_t)(unsigned long)&frame->info;
 		regs->regs[2] = (compat_ulong_t)(unsigned long)&frame->sig.uc;
 	}
@@ -490,27 +490,27 @@ int compat_setup_rt_frame(int usig, struct ksignal *ksig,
 	return err;
 }
 
-int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
+int a32_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
 		       struct pt_regs *regs)
 {
-	struct compat_sigframe __user *frame;
+	struct a32_sigframe __user *frame;
 	int err = 0;
 
-	frame = compat_get_sigframe(ksig, regs, sizeof(*frame));
+	frame = a32_get_sigframe(ksig, regs, sizeof(*frame));
 
 	if (!frame)
 		return 1;
 
 	__put_user_error(0x5ac3c35a, &frame->uc.uc_flags, err);
 
-	err |= compat_setup_sigframe(frame, regs, set);
+	err |= a32_setup_sigframe(frame, regs, set);
 	if (err == 0)
-		compat_setup_return(regs, &ksig->ka, frame->retcode, frame, usig);
+		a32_setup_return(regs, &ksig->ka, frame->retcode, frame, usig);
 
 	return err;
 }
 
-void compat_setup_restart_syscall(struct pt_regs *regs)
+void a32_setup_restart_syscall(struct pt_regs *regs)
 {
        regs->regs[7] = __NR_compat_restart_syscall;
 }

arch/arm64/kernel/sys32.c

@@ -140,7 +140,7 @@ COMPAT_SYSCALL_DEFINE6(aarch32_fallocate, int, fd, int, mode,
 #undef __SYSCALL
 #define __SYSCALL(nr, sym)	[nr] = __arm64_##sym,
 
-const syscall_fn_t compat_sys_call_table[__NR_compat_syscalls] = {
+const syscall_fn_t a32_sys_call_table[__NR_compat_syscalls] = {
 	[0 ... __NR_compat_syscalls - 1] = __arm64_sys_ni_syscall,
 #include <asm/unistd32.h>
 };

arch/arm64/kernel/sys_compat.c

@@ -33,7 +33,7 @@
 #include <asm/unistd.h>
 
 static long
-__do_compat_cache_op(unsigned long start, unsigned long end)
+__do_a32_cache_op(unsigned long start, unsigned long end)
 {
 	long ret;
 
@@ -64,7 +64,7 @@ __do_compat_cache_op(unsigned long start, unsigned long end)
 }
 
 static inline long
-do_compat_cache_op(unsigned long start, unsigned long end, int flags)
+do_a32_cache_op(unsigned long start, unsigned long end, int flags)
 {
 	if (end < start || flags)
 		return -EINVAL;
@@ -72,12 +72,12 @@ do_compat_cache_op(unsigned long start, unsigned long end, int flags)
 	if (!access_ok((const void __user *)start, end - start))
 		return -EFAULT;
 
-	return __do_compat_cache_op(start, end);
+	return __do_a32_cache_op(start, end);
 }
 /*
  * Handle all unrecognised system calls.
  */
-long compat_arm_syscall(struct pt_regs *regs, int scno)
+long a32_arm_syscall(struct pt_regs *regs, int scno)
 {
 	siginfo_t info;
 
@@ -97,7 +97,7 @@ long compat_arm_syscall(struct pt_regs *regs, int scno)
 	 * the specified region).
 	 */
 	case __ARM_NR_compat_cacheflush:
-		return do_compat_cache_op(regs->regs[0], regs->regs[1], regs->regs[2]);
+		return do_a32_cache_op(regs->regs[0], regs->regs[1], regs->regs[2]);
 
 	case __ARM_NR_compat_set_tls:
 		current->thread.uw.tp_value = regs->regs[0];
@@ -127,7 +127,7 @@ long compat_arm_syscall(struct pt_regs *regs, int scno)
 	info.si_errno = 0;
 	info.si_code  = ILL_ILLTRP;
 	info.si_addr  = (void __user *)instruction_pointer(regs) -
-			 (compat_thumb_mode(regs) ? 2 : 4);
+			 (a32_thumb_mode(regs) ? 2 : 4);
 
 	arm64_notify_die("Oops - bad compat syscall(2)", regs, &info, scno);
 	return 0;

arch/arm64/kernel/syscall.c

@@ -14,7 +14,7 @@
 #include <asm/thread_info.h>
 #include <asm/unistd.h>
 
-long compat_arm_syscall(struct pt_regs *regs, int scno);
+long a32_arm_syscall(struct pt_regs *regs, int scno);
 long sys_ni_syscall(void);
 
 static long do_ni_syscall(struct pt_regs *regs, int scno)
@@ -22,7 +22,7 @@ static long do_ni_syscall(struct pt_regs *regs, int scno)
 #ifdef CONFIG_AARCH32_EL0
 	long ret;
 	if (is_compat_task()) {
-		ret = compat_arm_syscall(regs, scno);
+		ret = a32_arm_syscall(regs, scno);
 		if (ret != -ENOSYS)
 			return ret;
 	}
@@ -167,6 +167,6 @@ asmlinkage void el0_svc_handler(struct pt_regs *regs)
 asmlinkage void el0_svc_compat_handler(struct pt_regs *regs)
 {
 	el0_svc_common(regs, regs->regs[7], __NR_compat_syscalls,
-		       compat_sys_call_table);
+		       a32_sys_call_table);
 }
 #endif

arch/arm64/kernel/traps.c

@@ -318,7 +318,7 @@ static int call_undef_hook(struct pt_regs *regs)
 		if (probe_kernel_address((__force __le32 *)pc, instr_le))
 			goto exit;
 		instr = le32_to_cpu(instr_le);
-	} else if (compat_thumb_mode(regs)) {
+	} else if (a32_thumb_mode(regs)) {
 		/* 16-bit Thumb instruction */
 		__le16 instr_le;
 		if (get_user(instr_le, (__le16 __user *)pc))