RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from... | linux-mm

[PATCHV2 0/3] Machine check recovery when kernel accesses poison · Tony Luck <tony.luck@intel.com> · 2015-12-11
[PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Tony Luck <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
RE: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · "Luck, Tony" <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Borislav Petkov <bp@alien8.de> · 2015-12-12
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Ross Zwisler <hidden> · 2015-12-14
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Borislav Petkov <bp@alien8.de> · 2015-12-14
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · "Luck, Tony" <tony.luck@intel.com> · 2015-12-15
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Borislav Petkov <bp@alien8.de> · 2015-12-15
Re: [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables · Borislav Petkov <bp@alien8.de> · 2015-12-15
[PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Tony Luck <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · "Luck, Tony" <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Konrad Rzeszutek Wilk <hidden> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · "Luck, Tony" <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Dan Williams <hidden> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · "Luck, Tony" <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · "Luck, Tony" <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Ingo Molnar <mingo@kernel.org> · 2015-12-14
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · "Luck, Tony" <tony.luck@intel.com> · 2015-12-14
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Andy Lutomirski <luto@amacapital.net> · 2015-12-14
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Borislav Petkov <bp@alien8.de> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Dan Williams <hidden> · 2015-12-15
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · "Luck, Tony" <tony.luck@intel.com> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Borislav Petkov <bp@alien8.de> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Dan Williams <hidden> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Dan Williams <hidden> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Borislav Petkov <bp@alien8.de> · 2015-12-15
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Elliott, Robert (Persistent Memory) <hidden> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Borislav Petkov <bp@alien8.de> · 2015-12-15
RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Elliott, Robert (Persistent Memory) <hidden> · 2015-12-15
Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks · Borislav Petkov <bp@alien8.de> · 2015-12-21
[PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas · Tony Luck <tony.luck@intel.com> · 2015-12-11
Re: [PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas · Andy Lutomirski <luto@amacapital.net> · 2015-12-11
Re: [PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas · Borislav Petkov <bp@alien8.de> · 2015-12-15
RE: [PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas · "Luck, Tony" <tony.luck@intel.com> · 2015-12-15

RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks

From: "Luck, Tony" <tony.luck@intel.com>
Date: 2015-12-11 22:35:20
Also in: lkml

Also, are there really PCOMMIT-capable CPUs that still forcibly
broadcast MCE?  If, so, that's unfortunate.

PCOMMIT and LMCE arrive together ... though BIOS is in the decision
path to enable LMCE, so it is possible that some systems could still
broadcast if the BIOS writer decides to not allow local.

But a machine check safe copy_from_user() would be useful
current generation cpus that broadcast all the time.

-Tony
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