Re: [Xen-devel] [PATCH v2 25/24] xl: Document VGA problems arising from lack of physmap dmop

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

Wei Liu writes ("Re: [PATCH v2 25/24] xl: Document VGA problems arising from 
lack of physmap dmop"):
> On Fri, Oct 06, 2017 at 03:33:52PM +0100, Ian Jackson wrote:
> > [ extra patch, following test report from Ross ]
...
> > +Domains with stdvga graphics cards to not work.
> > +Domains with cirrus vga do work,
> > +but there are performance problems with the vga console.
> > +
> 
> I don't follow. Do you imply cirrus doesn't need add_to_physmap to
> function?

Evidently not.  My qemu-dm-debian.guest.osstest.log does not contain
any of the errors Ross quotes and I can connect to my guest's VGA
console over vnc.

It does take a little extra time to boot, I think.  I didn't really
notice this and thought it was a side effect of the happenstance that
my guest had been converted from PV...

Ian.

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