Re: [qemu64,+smep,+smap] WARNING: CPU: 1 PID: 0 at arch/x86/kernel/cpu/amd.c:220 init_amd()

[H. Peter Anvin]

On 03/06/2014 05:58 PM, Fengguang Wu wrote:
> Hi all,
> 
> I find the below WARNING shows up only in
> 
>         qemu-system-x86_64 -cpu qemu64,+smep,+smap
> 

Yes, it is because Qemu doesn't show the AMD-specific SMP CPUID bit.
It's harmless in that sense.

Unfortunately these things are hard to fix in Qemu.

	-hpa

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