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Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages while mark unsync

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From: Xiao Guangrong
Subject: Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages while mark unsync
Date: Friday, June 11, 2010 - 6:43 am

Xiao Guangrong wrote:

Hi Avi, Marcelo,

About two months ago, i have sent this optimization, it just a little performance
improved (~0.5%) at that time, now, we allow more page become unsync, this path is
called higher frequency, during my test, kernelbench show the performance improved
~2%, so, i think we may apply it now :-)
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Messages in current thread:
[PATCH 1/7] KVM: MMU: rename 'page' and 'shadow_page' to 'sp', Xiao Guangrong, (Fri Jun 11, 6:28 am)
[PATCH 2/7] KVM: MMU: cleanup for dirty page judgment, Xiao Guangrong, (Fri Jun 11, 6:29 am)
[PATCH 3/7] KVM: MMU: avoid double write protected in sync ..., Xiao Guangrong, (Fri Jun 11, 6:30 am)
[PATCH 5/7] KVM: MMU: cleanup for __mmu_unsync_walk(), Xiao Guangrong, (Fri Jun 11, 6:32 am)
[PATCH 6/7] KVM: MMU: clear unsync_child_bitmap completely, Xiao Guangrong, (Fri Jun 11, 6:34 am)
[PATCH 7/7] KVM: MMU: don't walk every parent pages while ..., Xiao Guangrong, (Fri Jun 11, 6:35 am)
Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages wh ..., Xiao Guangrong, (Fri Jun 11, 6:43 am)
Re: [PATCH 4/7] KVM: MMU: don't mark pte notrap if it's ju ..., Xiao Guangrong, (Fri Jun 11, 7:38 pm)
Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages wh ..., Marcelo Tosatti, (Mon Jun 14, 3:07 pm)
Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages wh ..., Xiao Guangrong, (Mon Jun 14, 6:32 pm)
Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages wh ..., Marcelo Tosatti, (Tue Jun 15, 1:06 pm)
Re: [PATCH 7/7] KVM: MMU: don't walk every parent pages wh ..., Marcelo Tosatti, (Tue Jun 15, 1:09 pm)