On 09/06/2010 06:55 PM, Joerg Roedel wrote:
This patch introduces a struct with two new fields in
vcpu_arch for x86:
* fault.address
* fault.error_code
This will be used to correctly propagate page faults back
into the guest when we could have either an ordinary page
fault or a nested page fault. In the case of a nested page
fault the fault-address is different from the original
address that should be walked. So we need to keep track
about the real fault-address.
-static void emulate_pf(struct x86_emulate_ctxt *ctxt, unsigned long addr,
- int err)
+static void emulate_pf(struct x86_emulate_ctxt *ctxt)
{
- ctxt->cr2 = addr;
- emulate_exception(ctxt, PF_VECTOR, err, true);
+ emulate_exception(ctxt, PF_VECTOR, 0, true);
}
What happened to the error code?
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b2fe9e7..38d482d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4130,7 +4130,8 @@ static void inject_emulated_exception(struct kvm_vcpu
*vcpu)
{
struct x86_emulate_ctxt *ctxt =&vcpu->arch.emulate_ctxt;
if (ctxt->exception == PF_VECTOR)
- kvm_inject_page_fault(vcpu, ctxt->cr2, ctxt->error_code);
+ kvm_inject_page_fault(vcpu, vcpu->arch.fault.address,
+ vcpu->arch.fault.error_code);
else if (ctxt->error_code_valid)
kvm_queue_exception_e(vcpu, ctxt->exception, ctxt->error_code);
else
Ah. Not lovely, but it was ugly before as well.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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