Re: [PATCH v4 00/11] KVM: x86: optimize for writing guest page

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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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