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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-26 17:13:10 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-26 17:13:10 (GMT) |
commit | f1ebdd60cc73ed36fd977f7e719ce70d2f5cd1c0 (patch) | |
tree | 225cb2ea2c0f8990f29383058a07206cfd835893 /arch/x86 | |
parent | f99d055398d53c8f769d5153b3fdce1d2556e7ff (diff) | |
parent | 46e387bbd82d438b9131e237e6e2cb55a825da49 (diff) | |
download | linux-fsl-qoriq-f1ebdd60cc73ed36fd977f7e719ce70d2f5cd1c0.tar.xz |
Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
* 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: (22 commits)
Add _addr_lsb field to ia64 siginfo
Fix migration.c compilation on s390
HWPOISON: Remove retry loop for try_to_unmap
HWPOISON: Turn addr_valid from bitfield into char
HWPOISON: Disable DEBUG by default
HWPOISON: Convert pr_debugs to pr_info
HWPOISON: Improve comments in memory-failure.c
x86: HWPOISON: Report correct address granuality for huge hwpoison faults
Encode huge page size for VM_FAULT_HWPOISON errors
Fix build error with !CONFIG_MIGRATION
hugepage: move is_hugepage_on_freelist inside ifdef to avoid warning
Clean up __page_set_anon_rmap
HWPOISON, hugetlb: fix unpoison for hugepage
HWPOISON, hugetlb: soft offlining for hugepage
HWPOSION, hugetlb: recover from free hugepage error when !MF_COUNT_INCREASED
hugetlb: move refcounting in hugepage allocation inside hugetlb_lock
HWPOISON, hugetlb: add free check to dequeue_hwpoison_huge_page()
hugetlb: hugepage migration core
hugetlb: redefine hugepage copy functions
hugetlb: add allocate function for hugepage migration
...
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/mm/fault.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 79b0b37..852b319 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -11,6 +11,7 @@ #include <linux/kprobes.h> /* __kprobes, ... */ #include <linux/mmiotrace.h> /* kmmio_handler, ... */ #include <linux/perf_event.h> /* perf_sw_event */ +#include <linux/hugetlb.h> /* hstate_index_to_shift */ #include <asm/traps.h> /* dotraplinkage, ... */ #include <asm/pgalloc.h> /* pgd_*(), ... */ @@ -160,15 +161,20 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr) static void force_sig_info_fault(int si_signo, int si_code, unsigned long address, - struct task_struct *tsk) + struct task_struct *tsk, int fault) { + unsigned lsb = 0; siginfo_t info; info.si_signo = si_signo; info.si_errno = 0; info.si_code = si_code; info.si_addr = (void __user *)address; - info.si_addr_lsb = si_code == BUS_MCEERR_AR ? PAGE_SHIFT : 0; + if (fault & VM_FAULT_HWPOISON_LARGE) + lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault)); + if (fault & VM_FAULT_HWPOISON) + lsb = PAGE_SHIFT; + info.si_addr_lsb = lsb; force_sig_info(si_signo, &info, tsk); } @@ -722,7 +728,7 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code, tsk->thread.error_code = error_code | (address >= TASK_SIZE); tsk->thread.trap_no = 14; - force_sig_info_fault(SIGSEGV, si_code, address, tsk); + force_sig_info_fault(SIGSEGV, si_code, address, tsk, 0); return; } @@ -807,14 +813,14 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address, tsk->thread.trap_no = 14; #ifdef CONFIG_MEMORY_FAILURE - if (fault & VM_FAULT_HWPOISON) { + if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) { printk(KERN_ERR "MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n", tsk->comm, tsk->pid, address); code = BUS_MCEERR_AR; } #endif - force_sig_info_fault(SIGBUS, code, address, tsk); + force_sig_info_fault(SIGBUS, code, address, tsk, fault); } static noinline void @@ -824,7 +830,8 @@ mm_fault_error(struct pt_regs *regs, unsigned long error_code, if (fault & VM_FAULT_OOM) { out_of_memory(regs, error_code, address); } else { - if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON)) + if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON| + VM_FAULT_HWPOISON_LARGE)) do_sigbus(regs, error_code, address, fault); else BUG(); |