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Groups > linux.kernel > #1296158
| From | Dan Williams <dan.j.williams@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables |
| Date | 2015-12-21 20:20 +0100 |
| Message-ID | <qIe9X-25k-5@gated-at.bofh.it> (permalink) |
| References | <qGo3L-4HH-13@gated-at.bofh.it> <qGo3M-4HH-21@gated-at.bofh.it> <qIddU-1tP-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Dec 21, 2015 at 10:18 AM, Borislav Petkov <bp@alien8.de> wrote: > On Tue, Dec 15, 2015 at 05:29:30PM -0800, Tony Luck wrote: >> Copy the existing page fault fixup mechanisms to create a new table >> to be used when fixing machine checks. Note: >> 1) At this time we only provide a macro to annotate assembly code >> 2) We assume all fixups will in code builtin to the kernel. >> 3) Only for x86_64 >> 4) New code under CONFIG_MCE_KERNEL_RECOVERY (default 'n') >> >> Signed-off-by: Tony Luck <tony.luck@intel.com> >> --- >> arch/x86/Kconfig | 10 ++++++++++ >> arch/x86/include/asm/asm.h | 10 ++++++++-- >> arch/x86/include/asm/mce.h | 14 ++++++++++++++ >> arch/x86/kernel/cpu/mcheck/mce.c | 16 ++++++++++++++++ >> arch/x86/kernel/vmlinux.lds.S | 6 +++++- >> arch/x86/mm/extable.c | 19 +++++++++++++++++++ >> include/asm-generic/vmlinux.lds.h | 12 +++++++----- >> 7 files changed, 79 insertions(+), 8 deletions(-) >> >> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig >> index 96d058a87100..42d26b4d1ec4 100644 >> --- a/arch/x86/Kconfig >> +++ b/arch/x86/Kconfig >> @@ -1001,6 +1001,16 @@ config X86_MCE_INJECT >> If you don't know what a machine check is and you don't do kernel >> QA it is safe to say n. >> >> +config MCE_KERNEL_RECOVERY >> + bool "Recovery from machine checks in special kernel memory copy functions" >> + default n >> + depends on X86_MCE && X86_64 > > Still no dependency on CONFIG_LIBNVDIMM. I suggested we reverse the dependency and have the driver optionally "select MCE_KERNEL_RECOVERY". There may be other drivers outside of LIBNVDIMM that want this functionality enabled. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Tony Luck <tony.luck@intel.com> - 2015-12-16 18:30 +0100
Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Andy Lutomirski <luto@amacapital.net> - 2015-12-16 19:00 +0100
RE: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables "Luck, Tony" <tony.luck@intel.com> - 2015-12-17 00:00 +0100
Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Andy Lutomirski <luto@amacapital.net> - 2015-12-17 17:30 +0100
Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Borislav Petkov <bp@alien8.de> - 2015-12-21 19:20 +0100
Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Dan Williams <dan.j.williams@intel.com> - 2015-12-21 20:20 +0100
Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Borislav Petkov <bp@alien8.de> - 2015-12-21 21:20 +0100
Re: [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Borislav Petkov <bp@alien8.de> - 2015-12-22 12:20 +0100
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