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Re: [Qemu-devel] Pentium Pro Feature Bugs
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] Pentium Pro Feature Bugs |
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Date: |
Fri, 17 May 2019 04:57:29 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 |
On 17/05/19 02:30, tedheadster wrote:
> Paolo,
> I am running the kvm32 machine and I see a problem. Here is the
> output of /proc/cpuinfo :
>
> flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca
> cmov constant_tsc
>
> I see something rather important missing: cpuid.
>
> A lot of stuff breaks without cpuid, and I am fairly sure that qemu is
> supposed to 'hard code' in support for it. It is present with both my
> i486 and i586 virtual machines.
>
> - Matthew
>
That's weird... The cpuid flag does not come from QEMU, it is a "soft"
flag determined by trying to toggle EFLAGS.ID and EFLAGS.ID behaves the
same for all CPU models. What else do you see in /proc/cpuinfo?
Paolo