diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2010-04-14 15:51:09 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 12:17:46 +0300 |
| commit | e269fb2189fb86d79d64c0ca74c6c1a549ad4aa3 (patch) | |
| tree | 627c658efaec155d1f295d1fc7b8abded9d4f861 /arch/x86/kvm/vmx.c | |
| parent | 0760d44868f351ba30fc9a08cf1830e46aa72466 (diff) | |
KVM: x86: Push potential exception error code on task switches
When a fault triggers a task switch, the error code, if existent, has to
be pushed on the new task's stack. Implement the missing bits.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index fb4a8869bb99..1b38d8a88cf7 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3271,6 +3271,8 @@ static int handle_task_switch(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); unsigned long exit_qualification; + bool has_error_code = false; + u32 error_code = 0; u16 tss_selector; int reason, type, idt_v; @@ -3293,6 +3295,13 @@ static int handle_task_switch(struct kvm_vcpu *vcpu) kvm_clear_interrupt_queue(vcpu); break; case INTR_TYPE_HARD_EXCEPTION: + if (vmx->idt_vectoring_info & + VECTORING_INFO_DELIVER_CODE_MASK) { + has_error_code = true; + error_code = + vmcs_read32(IDT_VECTORING_ERROR_CODE); + } + /* fall through */ case INTR_TYPE_SOFT_EXCEPTION: kvm_clear_exception_queue(vcpu); break; @@ -3307,7 +3316,8 @@ static int handle_task_switch(struct kvm_vcpu *vcpu) type != INTR_TYPE_NMI_INTR)) skip_emulated_instruction(vcpu); - if (!kvm_task_switch(vcpu, tss_selector, reason)) + if (!kvm_task_switch(vcpu, tss_selector, reason, has_error_code, + error_code)) return 0; /* clear all local breakpoint enable flags */ |