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    SubjectRe: [PATCH v4 00/11] KVM: x86: optimize for writing guest page
    On 10/09/2011 02:24 PM, Avi Kivity wrote:
    > On 10/08/2011 06:06 AM, Xiao Guangrong wrote:
    >> On 10/07/2011 01:53 AM, Marcelo Tosatti wrote:
    >> > On Thu, Sep 22, 2011 at 04:52:40PM +0800, Xiao Guangrong wrote:
    >> >> This patchset is against https://github.com/avikivity/kvm.git
    >> next branch.
    >> >>
    >> >> In this version, some changes come from Avi's comments:
    >> >> - fix instruction retried for nested guest
    >> >> - skip write-flooding for the sp whose level is 1
    >> >> - rename some functions
    >> >
    >> > Please rebase.
    >> >
    >> >
    >>
    >> Marcelo,
    >>
    >> These patches can be applied without any conflict and it also works
    >> well,
    >> the current code was pulled from https://github.com/avikivity/kvm.git
    >> next branch.
    >>
    >> What problem did you meet when you applied these? :(
    >
    > I guess it was a user error - it applies cleanly here too (and pushed
    > to next, thanks).
    >

    However, it seems to reduce performance.

    Autotest results before:

    Test Status Seconds Info
    ---- ------ ------- ----
    (Result file: ../../results/default/status)
    unittest GOOD 147
    completed successfully
    Fedora.9.32.install.smp2 GOOD 865
    completed successfully
    Fedora.9.32.boot.smp2 GOOD 46
    completed successfully
    Fedora.9.32.reboot.smp2 GOOD 49
    completed successfully
    Fedora.9.32.shutdown.smp2 GOOD 15
    completed successfully
    Fedora.9.64.install.smp2 GOOD 943
    completed successfully
    Fedora.9.64.boot.smp2 GOOD 47
    completed successfully
    Fedora.9.64.reboot.smp2 GOOD 48
    completed successfully
    Fedora.9.64.shutdown.smp2 GOOD 14
    completed successfully
    WinXP.32.install.smp2 GOOD 772
    completed successfully
    WinXP.32.setup.smp2 GOOD 53
    completed successfully
    WinXP.32.boot.smp2 GOOD 57
    completed successfully
    WinXP.32.reboot.smp2 GOOD 34
    completed successfully
    WinXP.32.shutdown.smp2 GOOD 5
    completed successfully
    WinXP.64.install.smp2 GOOD 636
    completed successfully


    After:

    unittest GOOD 150
    completed successfully
    Fedora.9.32.install.smp2 GOOD 879
    completed successfully
    Fedora.9.32.boot.smp2 GOOD 50
    completed successfully
    Fedora.9.32.reboot.smp2 GOOD 48
    completed successfully
    Fedora.9.32.shutdown.smp2 GOOD 15
    completed successfully
    Fedora.9.64.install.smp2 GOOD 997
    completed successfully
    Fedora.9.64.boot.smp2 GOOD 47
    completed successfully
    Fedora.9.64.reboot.smp2 GOOD 48
    completed successfully
    Fedora.9.64.shutdown.smp2 GOOD 14
    completed successfully
    WinXP.32.install.smp2 GOOD 764
    completed successfully
    WinXP.32.setup.smp2 GOOD 51
    completed successfully
    WinXP.32.boot.smp2 GOOD 40
    completed successfully
    WinXP.32.reboot.smp2 GOOD 34
    completed successfully
    WinXP.32.shutdown.smp2 GOOD 5
    completed successfully
    WinXP.64.install.smp2 GOOD 666
    completed successfully


    --
    error compiling committee.c: too many arguments to function



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