From d264eb3c14d0e5df49ecab3e8b51caadf78abefa Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 21 May 2021 11:52:00 +0200 Subject: [PATCH] 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: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Message-Id: <20210521095204.2161214-27-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/hyperv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 831279976d9f..eded585620a7 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -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; } -- 2.39.5