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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-21 11:51:56 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:43 -0400 |
| commit | 4f532b7f969fcba010703fe21e0a85f662373041 (patch) | |
| tree | c59495d362d67c49152063ce08fe14d7ecb4050f /arch/x86/kvm/hyperv.c | |
| parent | 34ef7d7b9c0422316ee2c34c564b222255c91532 (diff) | |
| download | lwn-4f532b7f969fcba010703fe21e0a85f662373041.tar.gz lwn-4f532b7f969fcba010703fe21e0a85f662373041.zip | |
KVM: x86: hyper-v: Honor HV_POST_MESSAGES privilege bit
Hyper-V partition must possess 'HV_POST_MESSAGES' privilege to issue
HVCALL_POST_MESSAGE hypercalls.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-23-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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 13bfa4e0b93d..293619998c38 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2099,6 +2099,8 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) case HVCALL_NOTIFY_LONG_SPIN_WAIT: return hv_vcpu->cpuid_cache.enlightenments_ebx && hv_vcpu->cpuid_cache.enlightenments_ebx != U32_MAX; + case HVCALL_POST_MESSAGE: + return hv_vcpu->cpuid_cache.features_ebx & HV_POST_MESSAGES; default: break; } |