Re: [PATCH v7 00/10] KVM: MMU: fast page fault

From: Marcelo Tosatti
Date: Tue Jul 03 2012 - 11:17:16 EST


On Wed, Jun 20, 2012 at 03:56:29PM +0800, Xiao Guangrong wrote:
> Changlog:
> - always atomicly update the spte if it can be updated out of mmu-lock
> - rename spte_can_be_writable() to spte_is_locklessly_modifiable()
> - cleanup and comment spte_write_protect()
>
> Performance result:
> (The benchmark can be found at: http://www.spinics.net/lists/kvm/msg73011.html)
>
> before after
> Run 10 times, Avg time: 538233957 ns. 249809853 ns. +53.6%

Looks fine to me.

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