Recent kvm has some basic support of hyperv, this will cause the guest to identify itself as running on top of hyperv instead of kvm which will disable kvm pv functionality. This is because we try to detect hyperv before kvm. Solve this by simply checking kvm in detect_hypervisor() first. Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: x86@xxxxxxxxxx Cc: Gleb Natapov <gleb@xxxxxxxxxx> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Cc: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> --- arch/x86/kernel/cpu/hypervisor.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c index 8727921..3e149b6 100644 --- a/arch/x86/kernel/cpu/hypervisor.c +++ b/arch/x86/kernel/cpu/hypervisor.c @@ -36,10 +36,10 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] = &x86_hyper_xen_hvm, #endif &x86_hyper_vmware, - &x86_hyper_ms_hyperv, #ifdef CONFIG_KVM_GUEST &x86_hyper_kvm, #endif + &x86_hyper_ms_hyperv, }; const struct hypervisor_x86 *x86_hyper; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html