diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-21 11:52:01 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:44 -0400 |
| commit | 445caed0213acef29b9d3822b6906f99860ca9ab (patch) | |
| tree | a277d5fe65c2b9fae6ad0ff8e53b9961b70f7091 /arch/x86/kvm/hyperv.c | |
| parent | d264eb3c14d0e5df49ecab3e8b51caadf78abefa (diff) | |
KVM: x86: hyper-v: Honor HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED bit
Hypercalls which use extended processor masks are only available when
HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED privilege bit is exposed (and
'RECOMMENDED' is rather a misnomer).
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-28-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/hyperv.c')
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index eded585620a7..4f911dca7dd6 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2114,11 +2114,19 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) hv_vcpu->cpuid_cache.features_ebx & HV_DEBUGGING; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: + if (!(hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return false; + fallthrough; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; case HVCALL_SEND_IPI_EX: + if (!(hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return false; + fallthrough; case HVCALL_SEND_IPI: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_CLUSTER_IPI_RECOMMENDED; |