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KVM: MMU: Track page fault data in struct vcpu

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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.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2010-09-10 17:30:46 +02:00
committed by Avi Kivity
parent 3241f22da8
commit 8df25a328a
6 changed files with 38 additions and 31 deletions
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6
arch/x86/kvm/mmu.c
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@@ -2566,11 +2566,9 @@ static unsigned long get_cr3(struct kvm_vcpu *vcpu)
return vcpu->arch.cr3;
}
static void inject_page_fault(struct kvm_vcpu *vcpu,
u64 addr,
u32 err_code)
static void inject_page_fault(struct kvm_vcpu *vcpu)
{
vcpu->arch.mmu.inject_page_fault(vcpu, addr, err_code);
vcpu->arch.mmu.inject_page_fault(vcpu);
}
static void paging_free(struct kvm_vcpu *vcpu)