Re: [Xen-devel] Regression due to "mm/swap.c: flush lru pvecs on compound page arrival"

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

Michal Hocko writes ("Re: Regression due to "mm/swap.c: flush lru pvecs on 
compound page arrival""):
> On Wed 14-12-16 13:29:56, Ian Jackson wrote:
> > This commit breaks the test "test-amd64-amd64-xl-qemut-win7-amd64" in
> > the Xen Project CI system.
> 
> Could you be more specific about the regression please?

The effect seems to be that it causes some kind of OOM condition
during boot under Xen:

Dec 14 08:00:04.637998 [   22.584134] Out of memory: Kill process 2747
(exim4) score 2 or sacrifice child

It's not quite clear to me but I think the problem may be hardware
specific.

Full logs are available here:

> > >   Last fail repro: 
> > > http://logs.test-lab.xenproject.org/osstest/logs/103315/

See in particular this, which is the host serial console output:

http://logs.test-lab.xenproject.org/osstest/logs/103315/test-amd64-amd64-xl-qemut-win7-amd64/serial-elbling1.log

Start reading at Dec 14 07:59:33.478093.  At Dec 14 08:01:38.294433 a
log capture process started sending various debug keys to the console.

Thanks,
Ian.

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