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KVM: SVM: limit kvm_handle_page_fault to #PF handling

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It has always annoyed me a bit how SVM_EXIT_NPF is handled by
pf_interception.  This is also the only reason behind the
under-documented need_unprotect argument to kvm_handle_page_fault.
Let NPF go straight to kvm_mmu_page_fault, just like VMX
does in handle_ept_violation and handle_ept_misconfig.

Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2017-08-11 18:36:43 +02:00
parent 1cf53587c0
commit d000653057
4 changed files with 17 additions and 9 deletions
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3
arch/x86/kvm/vmx.c
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@@ -5894,8 +5894,7 @@ static int handle_exception(struct kvm_vcpu *vcpu)
cr2 = vmcs_readl(EXIT_QUALIFICATION);
/* EPT won't cause page fault directly */
WARN_ON_ONCE(!vcpu->arch.apf.host_apf_reason && enable_ept);
return kvm_handle_page_fault(vcpu, error_code, cr2, NULL, 0,
true);
return kvm_handle_page_fault(vcpu, error_code, cr2, NULL, 0);
}
ex_no = intr_info & INTR_INFO_VECTOR_MASK;