Re: [PATCH] KVM: x86: don't expose syscall/sysret to intel 32-bit guest

From: Paolo Bonzini
Date: Thu Nov 19 2015 - 07:02:50 EST

On 19/11/2015 13:01, Wanpeng Li wrote:
> > This is not correct. As far as I know, the SYSCALL bit is always
> > present in CPUID, even if the machine is running in 32-bit mode; CPUID
> > documentation (SDM Volume 2) explicitly documents bit 11 as "Bit 11:
> > SYSCALL/SYSRET available in 64-bit mode".
> No, I try a 32-bit linux host kernel, cpuid tool shows that SYSCALL
> bit is not set.

Ok, let me try...

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