Messages in this thread | | | From | "Luck, Tony" <> | Subject | RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks | Date | Fri, 11 Dec 2015 22:35:17 +0000 |
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> 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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