diff options
| author | Andrey Smetanin <asmetanin@virtuozzo.com> | 2015-11-10 15:36:35 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-11-25 19:24:22 +0300 |
| commit | db3975717ac5e2c2761bae7b90c4f2e0abb5ef22 (patch) | |
| tree | 4252bea2d4fafcd11b680a4ae77f8dd9731a705b /arch/x86/kvm/x86.c | |
| parent | 5c919412fe61c35947816fdbd5f7bd09fe0dd073 (diff) | |
| download | linux-db3975717ac5e2c2761bae7b90c4f2e0abb5ef22.tar.xz | |
kvm/x86: Hyper-V kvm exit
A new vcpu exit is introduced to notify the userspace of the
changes in Hyper-V SynIC configuration triggered by guest writing to the
corresponding MSRs.
Changes v4:
* exit into userspace only if guest writes into SynIC MSR's
Changes v3:
* added KVM_EXIT_HYPERV types and structs notes into docs
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index eb64377edcd3..036e4bc124f9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6482,6 +6482,12 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu) r = 0; goto out; } + if (kvm_check_request(KVM_REQ_HV_EXIT, vcpu)) { + vcpu->run->exit_reason = KVM_EXIT_HYPERV; + vcpu->run->hyperv = vcpu->arch.hyperv.exit; + r = 0; + goto out; + } } /* |