Messages in this thread Patch in this message | | | Date | Tue, 30 Jun 2009 17:22:54 -0700 | From | Greg KH <> | Subject | [patch 005/108] KVM: Move "exit due to NMI" handling into vmx_complete_interrupts() |
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2.6.30-stable review patch. If anyone has any objections, please let us know.
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From: Gleb Natapov <gleb@redhat.com>
commit 20f65983e30f222e5383f77206e3f571d1d64610 upstream.
To save us one reading of VM_EXIT_INTR_INFO.
Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/x86/kvm/vmx.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-)
--- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3255,8 +3255,17 @@ static void vmx_complete_interrupts(stru bool idtv_info_valid; u32 error; - idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK; exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); + + /* We need to handle NMIs before interrupts are enabled */ + if ((exit_intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR && + (exit_intr_info & INTR_INFO_VALID_MASK)) { + KVMTRACE_0D(NMI, &vmx->vcpu, handler); + asm("int $2"); + } + + idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK; + if (cpu_has_virtual_nmis()) { unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0; vector = exit_intr_info & INTR_INFO_VECTOR_MASK; @@ -3386,7 +3395,6 @@ static void fixup_rmode_irq(struct vcpu_ static void vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { struct vcpu_vmx *vmx = to_vmx(vcpu); - u32 intr_info; /* Record the guest's net vcpu time for enforced NMI injections. */ if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked)) @@ -3515,15 +3523,6 @@ static void vmx_vcpu_run(struct kvm_vcpu asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); vmx->launched = 1; - intr_info = vmcs_read32(VM_EXIT_INTR_INFO); - - /* We need to handle NMIs before interrupts are enabled */ - if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR && - (intr_info & INTR_INFO_VALID_MASK)) { - KVMTRACE_0D(NMI, vcpu, handler); - asm("int $2"); - } - vmx_complete_interrupts(vmx); }
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