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Re: [Qemu-devel] Prohibit Windows from running in QEMU


From: Peter Lieven
Subject: Re: [Qemu-devel] Prohibit Windows from running in QEMU
Date: Tue, 29 Oct 2013 11:50:28 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0

On 29.10.2013 11:48, Paolo Bonzini wrote:
Il 29/10/2013 11:40, Peter Lieven ha scritto:
The KVM signature should be at CPUID leaf 0x40000100.
If I enable hyperv for all vServers the signature is at
KVM_CPUID_SIGNATURE_NEXT (0x40000100) otherwise
at KVM_CPUID_SIGNATURE (0x0).
KVM_CPU_ID_SIGNATURE is 0x40000000.

Does this matter to Linux?
For recent versions it doesn't.  Older versions will not be able to use
kvmclock (and other PV enhancements for KVM such as steal time or PV EOI).
Ok, so this is not an option today - maybe later...

Any other idea to detect Windows is running or trying to start?

Thanks,
Peter





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