Messages in this thread | | | Date | Tue, 15 Dec 2015 19:39:24 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks |
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On Tue, Dec 15, 2015 at 10:35:49AM -0800, Dan Williams wrote: > Correction we have MOVNTDQA, but that requires saving the fpu state > and marking the memory as WC, i.e. probably not worth it.
Not really. Last time I tried an SSE3 memcpy in the kernel like glibc does, it wasn't worth it. The enhanced REP; MOVSB is hands down faster.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply.
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