Re: [PATCH -V2 -mm 0/4] mm, huge page: Copy target sub-page last when copy huge page

[Christopher Lameter]

On Thu, 24 May 2018, Huang, Ying wrote:

> If the cache contention is heavy when copying the huge page, and we
> copy the huge page from the begin to the end, it is possible that the
> begin of huge page is evicted from the cache after we finishing
> copying the end of the huge page.  And it is possible for the
> application to access the begin of the huge page after copying the
> huge page.

Isnt there a better way to zero the remaining pages? Something that has no
cache impact like a non temporal store? So the remaining cache will not be
evicted?

https://www.felixcloutier.com/x86/MOVNTI.html