Messages in this thread | | | Subject | Re: [PATCH] x86: Accelerate copy_page with non-temporal in X86 | From | Kemeng Shi <> | Date | Wed, 14 Apr 2021 13:25:20 +0800 |
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on 2021/4/13 22:53, Borislav Petkov wrote: > I thought "should be better" too last time when I measured rep; movs vs > NT stores but actual measurements showed no real difference. Mabye the NT stores make difference when store to slow dimms, like the persistent memory I just tested. Also, it likely reduces unnecessary cache load and flush, and benifits the running processes which have data cached.
-- Best wishes Kemeng Shi
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