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Re: [Xen-devel] [PATCH 1/2] libxl: set stdvga=1 by default when creating a hvm guest



On Wed, 27 Jun 2012, Pasi KÃrkkÃinen wrote:
> On Wed, Jun 27, 2012 at 01:45:49AM +0000, Ren, Yongjie wrote:
> > > -----Original Message-----
> > > From: Stefano Stabellini [mailto:stefano.stabellini@xxxxxxxxxxxxx]
> > > Sent: Wednesday, June 27, 2012 1:00 AM
> > > To: Ian Campbell
> > > Cc: Ren, Yongjie; xen-devel@xxxxxxxxxxxxx; Ian Jackson; Tim (Xen.org);
> > > Stefano Stabellini
> > > Subject: Re: [PATCH 1/2] libxl: set stdvga=1 by default when creating a 
> > > hvm
> > > guest
> > > 
> > > On Tue, 26 Jun 2012, Ian Campbell wrote:
> > > > On Tue, 2012-06-26 at 07:02 +0100, Ren, Yongjie wrote:
> > > > > libxl: set stdvga=1 by default when creating a hvm guest
> > > > >
> > > > > Most of the modern OSes (e.g. Windows XP, Windows 7, RHEL6.x,
> > > Ubuntu, Fedora) support VBE 2.0 or later.
> > > > > So, select a standard VGA card with VBE as the default emulated
> > > graphics device.
> > > >
> > > > I'm not expert on the graphics side of HVM, but on the face of it
> > > > switching the default to something more modern seems like a
> > > reasonable
> > > > idea, although I'm not sure if we should be doing this for 4.2 at this
> > > > point.
> > > >
> > > > I've CCd Tim and Stefano for input from the HVM and QEMU sides.
> > > 
> > > I think it is a good thing.
> > > The only thing to keep in mind is that QEMU upstream is switching to
> > > 16MB of videoram for stdvga. So at some point in the near future
> > > upstream QEMU will stop working correctly with xen 4.2, unless we bump
> > > the videoram to 16MB too.
> > > 
> > Yes, we should pay attention to this when using upstream QEMU.
> > 
> 
> Earlier there was a discussion about upstream QEMU lacking support
> for being able to specify/configure the amount of videomem.
> 
> You can do that with the current qemu-xen-traditional. 
> Should those patches be upstreamed? 

QEMU is getting a configurable videoram in the same patch series it is
getting 16MB by default for stdvga.
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