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xen-devel
Re: [Xen-devel] Re: windows7 installer lockup with viridian=1
Andrew Lyon wrote:
On Sun, Apr 26, 2009 at 6:02 PM, Andrew Lyon <andrew.lyon@xxxxxxxxx> wrote:
Hi,
I've been testing both 64 and 32 bit flavour of windows 7 on Xen since
the first public beta release, a few weeks ago I upgraded to Xen
unstable and added viridian=1 to all of my smp windows guests as it
prevents bsod bugcheck code 101 when under heavy load, today I tried
to upgrade my windows 7 hvm's to build 7077 and found that the
installer/bootloader locks up if viridian=1 is set.
It is not the installer that locks up as such, its the windows 7
equivalent of the boot progress bar that all recent versions of
windows display before the graphics drivers are loaded and the display
switches to a higher resolution with the mouse active.
I can reproduce this on our Xen bits (which is 3.3.x plus some patches,
including the viridian code).
When I modify the viridian code to not advertise the APIC-via-MSR
capability, Windows 7 boots just fine. With it, it hangs at the same
point you describe.
I don't recall that this happened when I initially tested Windows 7, so
perhaps something changed in the vlapic code that triggers this issue.
- Frank
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