Re: [PATCH 3/4] KVM: Count the number of dirty pages for dirty logging

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On 12/27/2011 05:15 PM, Takuya Yoshikawa wrote:
> On Tue, 27 Dec 2011 17:06:47 +0200
> Avi Kivity <avi@xxxxxxxxxx> wrote:
>
> > > There seems to be possible concurrent __set_bit()'s to the same word
> > > which will result in bit loss.
> > >
> > > I was thinking to change the kvm-unit-tests' dirty log test to write
> > > to two consecutive pages concurrently.  Is this good for debugging this?
> > 
> > Yes, it already tests some concurrency issues.  Please do write the
> > test, we should do this a lot more often.
> > 
>
> OK, I will write the test.
>
> If I can find a bit loss by that, I will send a fix patch: this is an
> important issue for my current work.

I'm pretty sure that the issue is real; if the test doesn't find an
error, it's probably not trying hard enough.

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

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