Re: [osstest PATCH] dom0pvh: assign 1GB of memory to PVH dom0

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Wed, Jul 22, 2020 at 04:11:21PM +0100, Ian Jackson wrote:
> Roger Pau Monne writes ("[osstest PATCH] dom0pvh: assign 1GB of memory to PVH 
> dom0"):
> > Current tests use 512MB of memory for dom0, but that's too low for a
> > PVH dom0 on some hosts and will cause errors because memory is
> > ballooned out in order to obtain physical memory ranges to map foreign
> > pages.
> > 
> > Using ballooned out pages for foreign mappings also doesn't seem to
> > work properly with the current Linux kernel version, so increase the
> > memory assigned to dom0 to 1GB for PVH dom0 tests. We should see about
> > reverting this when using ballooned pages is fixed.
> > 
> > The runvar diff is:
> > 
> > +test-amd64-amd64-dom0pvh-xl-amd   dom0_mem 1024
> > +test-amd64-amd64-dom0pvh-xl-intel dom0_mem 1024
> > 
> > I've done a repro of the failed test on elbling0 with dom0_mem set to
> > 1GB and it seems to prevent the issue, the flight is 152111.
> > 
> > Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> 
> Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> 
> And queued.

Thanks! Forgot to add that I've checked x86 hosts and they all have at
least 8GB of RAM, so using 1GB for dom0 should be fine, as I don't
think osstest runs guests close to 7GB of RAM.

Roger.