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SubjectRe: [PATCHv3 1/1] locking/qspinlock/x86: Avoid test-and-set when PV_DEDICATED is set
On 10/11/2017 07:07, Wanpeng Li wrote:
>>> You should also add a cpuid flag in kvm part.
>> It is better without that. The flag has no dependency on KVM (kernel
>> hypervisor) code.
> Do you mean -cpu host, +xxxx,I think it will result in "warning: host
> doesn't support requested feature: CPUID.40000001H:eax.XXXXXX"

There are some exceptions where QEMU overrides the values of

I think it is better to add the flag to KVM *and* to QEMU's override in
kvm_arch_get_supported_cpuid (target/i386/kvm.c).


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