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KVM: VMX: Properly handle software interrupt re-injection in real mode

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When reinjecting a software interrupt or exception, use the correct
instruction length provided by the hardware instead of a hardcoded 1.

Fixes problems running the suse 9.1 livecd boot loader.

Problem introduced by commit f0a3602c20 ("KVM: Move interrupt injection
logic to x86.c").

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov 2009-05-19 11:07:10 +03:00 committed by Avi Kivity
parent 74fca6a428
commit ae0bb3e011
1 changed files with 6 additions and 2 deletions
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8
arch/x86/kvm/vmx.c
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@ -801,8 +801,9 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
vmx->rmode.irq.pending = true; vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = nr; vmx->rmode.irq.vector = nr;
vmx->rmode.irq.rip = kvm_rip_read(vcpu); vmx->rmode.irq.rip = kvm_rip_read(vcpu);
if (nr == BP_VECTOR || nr == OF_VECTOR) if (kvm_exception_is_soft(nr))
vmx->rmode.irq.rip++; vmx->rmode.irq.rip +=
vmx->vcpu.arch.event_exit_inst_len;
intr_info |= INTR_TYPE_SOFT_INTR; intr_info |= INTR_TYPE_SOFT_INTR;
vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info); vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1); vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1);
@ -2468,6 +2469,9 @@ static void vmx_inject_irq(struct kvm_vcpu *vcpu)
vmx->rmode.irq.pending = true; vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = irq; vmx->rmode.irq.vector = irq;
vmx->rmode.irq.rip = kvm_rip_read(vcpu); vmx->rmode.irq.rip = kvm_rip_read(vcpu);
if (vcpu->arch.interrupt.soft)
vmx->rmode.irq.rip +=
vmx->vcpu.arch.event_exit_inst_len;
vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
irq | INTR_TYPE_SOFT_INTR | INTR_INFO_VALID_MASK); irq | INTR_TYPE_SOFT_INTR | INTR_INFO_VALID_MASK);
vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1); vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1);