Radim Krčmář fe2a3027e7 KVM: x86: fix backward migration with async_PF ... Guests on new hypersiors might set KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT bit when enabling async_PF, but this bit is reserved on old hypervisors, which results in a failure upon migration. To avoid breaking different cases, we are checking for CPUID feature bit before enabling the feature and nothing else. Fixes: 52a5c155cf ("KVM: async_pf: Let guest support delivery of async_pf from guest mode") Cc: <stable@vger.kernel.org> Reviewed-by: Wanpeng Li <wanpengli@tencent.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2018-02-24 01:43:48 +01:00
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asm	kvm: fix warning for non-x86 builds	2018-02-24 01:43:47 +01:00
uapi/asm	KVM: x86: fix backward migration with async_PF	2018-02-24 01:43:48 +01:00