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| author | Avi Kivity <avi@qumranet.com> | 2008-07-01 16:20:21 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-10-15 10:15:12 +0200 |
| commit | cf393f75661f4b17451377b353833eb5502a9688 (patch) | |
| tree | 4ec14e8f1acc5c7b34ecdbae8832b9bffa84e779 /arch/x86/kvm/vmx.c | |
| parent | 5b5c6a5a60801effb559e787a947885d9850a7da (diff) | |
| download | op-kernel-dev-cf393f75661f4b17451377b353833eb5502a9688.zip op-kernel-dev-cf393f75661f4b17451377b353833eb5502a9688.tar.gz | |
KVM: Move NMI IRET fault processing to new vmx_complete_interrupts()
Currently most interrupt exit processing is handled on the entry path,
which is confusing. Move the NMI IRET fault processing to a new function,
vmx_complete_interrupts(), which is called on the vmexit path.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 5a3a032..2adfacb 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2817,6 +2817,27 @@ static void enable_intr_window(struct kvm_vcpu *vcpu) enable_irq_window(vcpu); } +static void vmx_complete_interrupts(struct vcpu_vmx *vmx) +{ + u32 exit_intr_info; + bool unblock_nmi; + u8 vector; + + exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); + if (cpu_has_virtual_nmis()) { + unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0; + vector = exit_intr_info & INTR_INFO_VECTOR_MASK; + /* + * SDM 3: 25.7.1.2 + * Re-set bit "block by NMI" before VM entry if vmexit caused by + * a guest IRET fault. + */ + if (unblock_nmi && vector != DF_VECTOR) + vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, + GUEST_INTR_STATE_NMI); + } +} + static void vmx_intr_assist(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); @@ -2873,23 +2894,12 @@ static void vmx_intr_assist(struct kvm_vcpu *vcpu) return; } if (cpu_has_virtual_nmis()) { - /* - * SDM 3: 25.7.1.2 - * Re-set bit "block by NMI" before VM entry if vmexit caused by - * a guest IRET fault. - */ - if ((exit_intr_info_field & INTR_INFO_UNBLOCK_NMI) && - (exit_intr_info_field & INTR_INFO_VECTOR_MASK) != 8) - vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, - vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) | - GUEST_INTR_STATE_NMI); - else if (vcpu->arch.nmi_pending) { + if (vcpu->arch.nmi_pending) { if (vmx_nmi_enabled(vcpu)) vmx_inject_nmi(vcpu); enable_intr_window(vcpu); return; } - } if (!kvm_cpu_has_interrupt(vcpu)) return; @@ -3076,6 +3086,8 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) KVMTRACE_0D(NMI, vcpu, handler); asm("int $2"); } + + vmx_complete_interrupts(vmx); } static void vmx_free_vmcs(struct kvm_vcpu *vcpu) |
