[pve-devel] [PATCH pve-qemu-kvm] fix #991: Can't install Win7/8

[Thomas Lamprecht]

On 05/11/2016 03:50 PM, Thomas Lamprecht wrote:
> follow up inline;
>
> On 05/11/2016 02:53 PM, Thomas Lamprecht wrote:
[snip]
>> I'll do some checks on QEMU 2.6-rc5 which includes this also.
>> For the future, could you please explain in the CI message which commit
>> you revert and why, not that we open a security hole because of a
>> "workaround" by accident.
> I can circumvent the hanging windows 7 installation with choosing "Linux
> 2.6,3.X,4.X" as OS for the installation, then it works just fine!
>
> Also qemu 2.6-rc5 - with the here reverted patches and the PVE patchset
> ontop - hangs on a windows 7 Installation *when* Windows 7 is chosen as OS.
> So the CVE patch probably isn't the real problem it triggers a side
> effect/bug with a parameter I guess
>
> I'll look into what we do different on windows/linux guest OS and if
> there is something not quite correct anymore, anyhow I'm against
> reverting the CVE as a workaround (without any *good* explanation why we
> should revert it, i.e. what functionality inside QEMU it breaks in which
> way), a workaround for now is choosing Linux as OS during installation.
>
> Thanks,
> Thomas


FYI, not surprisingly, '-std' (which equals vga) is the problem, with
cirrus graphic cards everything is working...
Spice, vmware all hang, as one patch fixed a SeaBIOS related bug I
checked the process with OVMF (UEFI) it hangs also, so not firmware
dependent problem.

I'll look upstream if anybody noticed something is aware of the problem...
We do not have really vga related patches in the PVE patch set, but I
guess trying it with vanilla qemu is an option.

sorry for spamming the list a little, I stop for now :)

-Thomas


>>>  	tar czf ${KVMSRC} --exclude CVS --exclude .git --exclude .svn ${KVMDIR}
>>>  
>>>  ${DEBS} kvm: ${KVMSRC}
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