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