Commit d264eb3c authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Paolo Bonzini
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KVM: x86: hyper-v: Honor HV_X64_CLUSTER_IPI_RECOMMENDED bit 



Hyper-V partition must possess 'HV_X64_CLUSTER_IPI_RECOMMENDED'
privilege ('recommended' is rather a misnomer) to issue
HVCALL_SEND_IPI hypercalls.

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-27-vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent bb53ecb4

arch/x86/kvm/hyperv.c

+4 −0
Original line number Diff line number Diff line
@@ -2118,6 +2118,10 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) 
	case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE:

		return hv_vcpu->cpuid_cache.enlightenments_eax &

			HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED;

	case HVCALL_SEND_IPI_EX:

	case HVCALL_SEND_IPI:

		return hv_vcpu->cpuid_cache.enlightenments_eax &

			HV_X64_CLUSTER_IPI_RECOMMENDED;

	default:

		break;

	}