diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2010-05-17 14:43:34 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-02 10:30:05 -0700 |
| commit | ddf9c303ea76f8d14a798eb54cdf6ebe6b105362 (patch) | |
| tree | 2e96243bb019e550aa63e296f4f99317552ca3e0 | |
| parent | 2ed988589dc2ef2e952d6f9f2f588e9372493dbd (diff) | |
KVM: SVM: Handle MCEs early in the vmexit process
This patch moves handling of the MC vmexits to an earlier
point in the vmexit. The handle_exit function is too late
because the vcpu might alreadry have changed its physical
cpu.
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit fe5913e4e1700cbfc337f4b1da9ddb26f6a55586)
| -rw-r--r-- | arch/x86/kvm/svm.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 1185b556653..d1754ce62ed 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1280,7 +1280,7 @@ static int nm_interception(struct vcpu_svm *svm) return 1; } -static int mc_interception(struct vcpu_svm *svm) +static void svm_handle_mce(struct vcpu_svm *svm) { /* * On an #MC intercept the MCE handler is not called automatically in @@ -1290,6 +1290,11 @@ static int mc_interception(struct vcpu_svm *svm) "int $0x12\n"); /* not sure if we ever come back to this point */ + return; +} + +static int mc_interception(struct vcpu_svm *svm) +{ return 1; } @@ -2842,6 +2847,14 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) vcpu->arch.regs_avail &= ~(1 << VCPU_EXREG_PDPTR); vcpu->arch.regs_dirty &= ~(1 << VCPU_EXREG_PDPTR); } + + /* + * We need to handle MC intercepts here before the vcpu has a chance to + * change the physical cpu + */ + if (unlikely(svm->vmcb->control.exit_code == + SVM_EXIT_EXCP_BASE + MC_VECTOR)) + svm_handle_mce(svm); } #undef R |