Messages in this thread Patch in this message | | | From | Vitaly Kuznetsov <> | Subject | [PATCH v2 26/30] KVM: x86: hyper-v: Honor HV_X64_CLUSTER_IPI_RECOMMENDED bit | Date | Fri, 21 May 2021 11:52:00 +0200 |
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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 <vkuznets@redhat.com> --- 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 f99072e092d0..ba5af4d27ccf 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2050,6 +2050,10 @@ 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; } -- 2.31.1
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