Re: [Qemu-devel] [SeaBIOS] [BUG] Windows 7 fails to start with new vgabios binaries

[Kevin O'Connor]

On Mon, Dec 09, 2013 at 02:20:59PM +0100, Gerd Hoffmann wrote:
> On Mo, 2013-12-09 at 14:18 +0200, Gal Hammer wrote:
> > A Windows 7 (32-bit) VM running with QXL device fails to start with the 
> > new updated vgabios binaries (commit 
> > 6eefccc0bb9c34051b1e21880fc3a1c1c8686edd).
> > 
> > qemu's command line:
> > 
> > /usr/bin/qemu-kvm -m 1G -smp 1 -enable-kvm -usb -device usb-tablet \
> >   -device ide-drive,drive=drive-virtio0-0-0,id=virtio0-0-0,bootindex=1 \
> >   -drive 
> > file=win7_32.qcow2,if=none,id=drive-virtio0-0-0,format=qcow2,werror=stop,rerror=stop,cache=none
> >  
> > \
> >   -monitor stdio \
> >   -vga qxl -spice id=on,disable-ticketing,port=5903
> 
> [ full quote, adding seabios to Cc ]
> 
> Tracked down to the new vgabios stack switching.  With
> CONFIG_VGA_ALLOCATE_EXTRA_STACK=n everything is fine again.

Ughh.  WinXP doesn't have the problem, but I can also reproduce on
Win7 beta.

I'll change the default for CONFIG_VGA_ALLOCATE_EXTRA_STACK to off.

Thanks,
-Kevin