Re: [PATCH 2/8] KVM: MMU: set the dirty bit for the upper shadow page

From: Marcelo Tosatti
Date: Mon Jan 09 2012 - 06:35:04 EST


On Fri, Dec 16, 2011 at 06:14:24PM +0800, Xiao Guangrong wrote:
> Upper page do not need to be tracked the status bit, it is safe to set the
> dirty and let cpu to happily prefetch it
>
> Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
> ---
> arch/x86/kvm/mmu.c | 13 +++++--------
> 1 files changed, 5 insertions(+), 8 deletions(-)

Dirty bit is ignored in non-leaf pagetable entries.

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