- 15 4月, 2009 1 次提交
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由 Paul Mackerras 提交于
Richard Henderson pointed out that the powerpc __futex_atomic_op has a bug: it will write the wrong value if the stwcx. fails and it has to retry the lwarx/stwcx. loop, since 'oparg' will have been overwritten by the result from the first time around the loop. This happens because it uses the same register for 'oparg' (an input) as it uses for the result. This fixes it by using separate registers for 'oparg' and 'ret'. Cc: stable@kernel.org Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 07 4月, 2009 7 次提交
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由 Kumar Gala 提交于
During the ISA 2.06 development the opcode for tlbilx changed and some early implementations used to old opcode. Add support for a MMU_FTR fixup to deal with this. Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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由 Kumar Gala 提交于
The tlbilx opcode was not matching the Power ISA 2.06 arch spec. The old opcode was an early suggested opcode that changed during the 2.06 architecture process. Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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由 Paul Mackerras 提交于
This fixes a problem reported by Sean MacLennan where loading any module would cause an oops. We weren't marking the pages containing the module text as having hardware execute permission, due to a bug introduced in commit 8d1cf34e ("powerpc/mm: Tweak PTE bit combination definitions"), hence trying to execute the module text caused an exception on processors that support hardware execute permission. This adds _PAGE_HWEXEC to the definitions of PAGE_KERNEL_X and PAGE_KERNEL_ROX to fix this problem. Reported-by: NSean MacLennan <smaclennan@pikatech.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
[paulus@samba.org: changed to use syscall numbers 320 and 321 since perf_counters is currently using 319.] Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Anton Blanchard 提交于
Instead of checking for known events, pass in all 1s so we handle future event types. We were currently missing the IO event type. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Anton Blanchard 提交于
PHYP tells us how often a shared processor dispatch changed physical cpus. This can highlight performance problems caused by the hypervisor. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Huang Weiyi 提交于
Remove duplicated #include's in - arch/powerpc/include/asm/ps3fb.h - arch/powerpc/kernel/setup-common.c Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 06 4月, 2009 1 次提交
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由 Kumar Gala 提交于
CoreInt provides a mechansim to deliver the IRQ vector directly into the core on an interrupt (via the SPR EPR) rather than having to go IACK on the PIC. This is suppose to provide an improvment in interrupt latency by reducing the time to get the IRQ vector. Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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- 03 4月, 2009 2 次提交
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由 Robin Holt 提交于
Pass the original flags to rwlock arch-code, so that it can re-enable interrupts if implemented for that architecture. Initially, make __raw_read_lock_flags and __raw_write_lock_flags stubs which just do the same thing as non-flags variants. Signed-off-by: NPetr Tesarik <ptesarik@suse.cz> Signed-off-by: NRobin Holt <holt@sgi.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kumar Gala 提交于
While normally we don't use the math emulation code on ppc64 it can be useful for doing things like emulating the embedded FP instructions. Since performance isn't critical in this scenario its easier to keep the sizes of the various math-emu the same as on ppc32. Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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- 02 4月, 2009 2 次提交
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由 Kumar Gala 提交于
SPEFSCR is a user space register and doesn't conflict with anything. Moving the defines of the various bit fields makes some emulation code have fewer ifdefs Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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由 Geert Uytterhoeven 提交于
Create a real RTC driver for PS3, and unhook the deprecated ppc_md.[gs]et_rtc_time. Signed-off-by: NGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: NAlessandro Zummo <a.zummo@towertech.it> Acked-by: NGeoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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- 01 4月, 2009 2 次提交
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由 Magnus Damm 提交于
Remove unused/duplicate cruft from asm/suspend.h: - x86_32: remove unused acpi code - powerpc: remove duplicate prototypes, see linux/suspend.h Signed-off-by: NMagnus Damm <damm@igel.co.jp> Cc: Paul Mundt <lethal@linux-sh.org> Acked-by: N"Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Akinobu Mita 提交于
Use debug_kmap_atomic in kmap_atomic, kmap_atomic_pfn, and iomap_atomic_prot_pfn. Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 30 3月, 2009 1 次提交
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由 Rusty Russell 提交于
Everyone defines it, and only one person uses it (arch/mips/sgi-ip27/ip27-nmi.c). So just open code it there. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Cc: linux-mips@linux-mips.org
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- 28 3月, 2009 1 次提交
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由 Christoph Hellwig 提交于
Due to a different size of ino_t ustat needs a compat handler, but currently only x86 and mips provide one. Add a generic compat_sys_ustat and switch all architectures over to it. Instead of doing various user copy hacks compat_sys_ustat just reimplements sys_ustat as it's trivial. This was suggested by Arnd Bergmann. Found by Eric Sandeen when running xfstests/017 on ppc64, which causes stack smashing warnings on RHEL/Fedora due to the too large amount of data writen by the syscall. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 27 3月, 2009 1 次提交
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由 Josh Boyer 提交于
On powerpc64 machines running 32-bit userspace, we can get garbage bits in the stack pointer passed into the kernel. Most places handle this correctly, but the signal handling code uses the passed value directly for allocating signal stack frames. This fixes the issue by introducing a get_clean_sp function that returns a sanitized stack pointer. For 32-bit tasks on a 64-bit kernel, the stack pointer is masked correctly. In all other cases, the stack pointer is simply returned. Additionally, we pass an 'is_32' parameter to get_sigframe now in order to get the properly sanitized stack. The callers are know to be 32 or 64-bit statically. Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 24 3月, 2009 22 次提交
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由 Liu Yu 提交于
So, KVM needs to read tlbcam_index to know exactly which TLB1 entry is unused by host. Signed-off-by: NLiu Yu <yu.liu@freescale.com> Acked-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
After the rewrite of KVM's debug support, this code doesn't even build any more. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
e500 has additional interrupt vectors (and corresponding IVORs) for SPE and performance monitoring interrupts. Signed-off-by: NLiu Yu <yu.liu@freescale.com> Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
When itlb or dtlb miss happens, E500 needs to update some mmu registers. So that the auto-load mechanism can work on E500 when write a tlb entry. Signed-off-by: NLiu Yu <yu.liu@freescale.com> Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
Signed-off-by: NLiu Yu <yu.liu@freescale.com> Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
Kernel for E500 need clear dbsr when startup. So add dbsr register in kvm_vcpu_arch for BOOKE. Signed-off-by: NLiu Yu <yu.liu@freescale.com> Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
e500 will provide its own implementation of these. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
Passing just the TLB index will ease an e500 implementation. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Remove the remaining arch fragments of the old guest debug interface that now break non-x86 builds. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic part, controlling the "main switch" and the single-step feature. The arch specific part adds an x86 interface for intercepting both types of debug exceptions separately and re-injecting them when the host was not interested. Moveover, the foundation for guest debugging via debug registers is layed. To signal breakpoint events properly back to userland, an arch-specific data block is now returned along KVM_EXIT_DEBUG. For x86, the arch block contains the PC, the debug exception, and relevant debug registers to tell debug events properly apart. The availability of this new interface is signaled by KVM_CAP_SET_GUEST_DEBUG. Empty stubs for not yet supported archs are provided. Note that both SVM and VTX are supported, but only the latter was tested yet. Based on the experience with all those VTX corner case, I would be fairly surprised if SVM will work out of the box. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Benjamin Herrenschmidt 提交于
This moves some MMU related init code out of setup_64.c into hash_utils_64.c and calls it early_init_mmu() and early_init_mmu_secondary(). This will make it easier to plug in a new MMU type. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
ppc32 has it already, add it to ppc64 as a preliminary for adding support for Book3E 64-bit support Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
Now that they are almost identical, we can merge some of the definitions related to the PTE format into common files. This creates a new pte-common.h which is included by both 32 and 64-bit right after the CPU specific pte-*.h file, and which defines some bits to "default" values if they haven't been defined already, and then provides a generic definition of most of the bit combinations based on these and exposed to the rest of the kernel. I also moved to the common pgtable.h most of the "small" accessors to the PTE bits and modification helpers (pte_mk*). The actual accessors remain in their separate files. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
This patch tweaks the way some PTE bit combinations are defined, in such a way that the 32 and 64-bit variant become almost identical and that will make it easier to bring in a new common pte-* file for the new variant of the Book3-E support. The combination of bits defining access to kernel pages are now clearly separated from the combination used by userspace and the core VM. The resulting generated code should remain identical unless I made a mistake. Note: While at it, I removed a non-sensical statement related to CONFIG_KGDB in ppc_mmu_32.c which could cause kernel mappings to be user accessible when that option is enabled. Probably something that bitrot. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Kumar Gala 提交于
Complete workaround for DTLB errata in e300c2/c3/c4 processors. Due to the bug, the hardware-implemented LRU algorythm always goes to way 1 of the TLB. This fix implements the proposed software workaround in form of a LRW table for chosing the TLB-way. Based on patch from David Jander <david@protonic.nl> Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Kumar Gala 提交于
Now that we set archdata for of_platform and platform devices via platform_notify() we no longer need to special case having a NULL device pointer or NULL archdata. It should be a driver error if this condition shows up and the driver should be fixed. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Rusty Russell 提交于
Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Jeremy Kerr 提交于
PAPR v2.3 defines fields in the virtual processor area for a dispatch trace log (DLT). Since we'd like to use the DLT, add the necessary fields to struct lppaca. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Jeremy Kerr 提交于
The page_ins member ends at byte 0x3, not 0x4. Also, fix up the alignment. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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