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Commit f7eea636 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: nVMX: handle page fault in vmread 



The implementation of vmread to memory is still incomplete, as it
lacks the ability to do vmread to I/O memory just like vmptrst.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent a7f89616

arch/x86/kvm/vmx/nested.c

+3 −1
Original line number Diff line number Diff line
@@ -4540,6 +4540,7 @@ static int handle_vmread(struct kvm_vcpu *vcpu) 
	int len;

	gva_t gva = 0;

	struct vmcs12 *vmcs12;

	struct x86_exception e;

	short offset;



	if (!nested_vmx_check_permission(vcpu))
@@ -4588,7 +4589,8 @@ static int handle_vmread(struct kvm_vcpu *vcpu) 
				vmx_instruction_info, true, len, &gva))

			return 1;

		/* _system ok, nested_vmx_check_permission has verified cpl=0 */

		kvm_write_guest_virt_system(vcpu, gva, &field_value, len, NULL);

		if (kvm_write_guest_virt_system(vcpu, gva, &field_value, len, &e))

			kvm_inject_page_fault(vcpu, &e);

	}



	return nested_vmx_succeed(vcpu);