Re: [Xen-devel] HVM and WIndows NT

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Try disabling the acceleration stuff in xen/arch/x86/hvm/stdvga.c. Should
suffice to 'return;' before the for-loop in stdvga_init().

 -- Keir

On 06/08/2009 16:50, "Alexandre CABROL PERALES" <alexandre.cabrol@xxxxxxxx>
wrote:

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> I just installed xen 3.4
> and now with stdvga=0
> when i try to resize screen resolution the Windows NT crash.
> 
> Alexandre CABROL PERALES a écrit :
>> my main concern is :
>> i have to use windows nt in 1280x1024,
>> how can i reach this goal with xen 3.3 or upper?
>> 
>> Seems there is a bug in Cirrus Video Card about screen resize.
>> 
>> However there is no bug on this qemu emulation with kvm.
>> 
>> So is there any way to patch qemu-dm video card emulator with current
>> qemu version?
>> 
>> or what is the latest version of qemu used to dev qemu-dm?
>> I red a doc from 2007 which said that qemu-dm is based on qemu 8.
>> 
>> is it still true?
>> 
>> if not what is the base version of qemu used in qemu-dm for xen 3.3 and
>> xen 3.4 ?
>> 
>> regards,
>> 
>> mats petersson a écrit :
>>> A while (> 2 years ago), I'm sure I ran up Windows NT on Xen 3.0 or
>>> 3.1. But that was on an AMD processor, and it's highly likely that the
>>> BIOS / NT interaction  is broken in the Intel only "simulation of
>>> real-mode via vritual 8086 mode". The AMD processors support true Real
>>> Mode in Virtual machine mode.
>>> 
>>> Of course, this may all have changed a huge amount, so do not rely on
>>> my information.
>>> 
>>> --
>>> Mats
>>> 
>>> 2009/8/6 Alexandre CABROL PERALES <alexandre.cabrol@xxxxxxxx>:
>>> Hi everybody,
>>> i'm currently trying to run Windows NT 4.0 on Xen.
>>> 
>>> I can install it with Xen 3.3 and CPUID below:
>>> # Intel(R) Pentium(R) 4 CPU
>>> 
>>> cpuid = [
>>> '0x00000000:eax=0x00000002,ebx=0x756e6547,ecx=0x6c65746e,edx=0x49656e69',
>>> 
>>> '0x00000001:eax=0x00000f12,ebx=0x00010808,ecx=0x00000000,edx=0x3febfbff',
>>> 
>>> '0x00000002:eax=0x665b5001,ebx=0x00000000,ecx=0x00000000,edx=0x007a7040',
>>> 
>>> '0x80000000:eax=0x80000004,ebx=0x00000000,ecx=0x00000000,edx=0x00000000',
>>> 
>>> '0x80000001:eax=0x00000000,ebx=0x00000000,ecx=0x00000000,edx=0x00000000',
>>> 
>>> '0x80000002:eax=0x20202020,ebx=0x20202020,ecx=0x20202020,edx=0x6e492020',
>>> 
>>> '0x80000003:eax=0x286c6574,ebx=0x50202952,ecx=0x69746e65,edx=0x52286d75',
>>> 
>>> '0x80000004:eax=0x20342029,ebx=0x20555043,ecx=0x30352e31,edx=0x007a4847',
>>>          ]
>>> 
>>> 
>>> 
>>> But i have an issue with Video Card emulation of Xen 3.3.1 :
>>> when i use Cirrus Logic emulation,
>>> during display test the system crash with yellow or green screen.
>>> 
>>> It seems that Cirrus emulation didn't support the resizing.
>>> 
>>> If i try stdvga mode the videocard is not recognised by Windows NT.
>>> 
>>> I tried on KVM and it works fine with cirrus logic emulation.
>>> 
>>> 
>>> 
>>> Is there any way to update qemu-dm with current qemu version ?
>>> 
>>> 
>>> regards,
>> _______________________________________________
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>> 
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>> 
>>> .
>> 
>> 
> 
> - --
> Alexandre CABROL PERALES
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