Commit 30b31ab6 authored Nov 17, 2010 by Avi Kivity

KVM: x86 emulator: do not perform address calculations on linear addresses



Linear addresses are supposed to already have segment checks performed on them;
if we play with these addresses the checks become invalid.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

parent 90de84f5

arch/x86/kvm/emulate.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -568,7 +568,8 @@ static int read_descriptor(struct x86_emulate_ctxt *ctxt,
		ctxt->vcpu, NULL);
		if (rc != X86EMUL_CONTINUE)
		return rc;
		rc = ops->read_std(linear(ctxt, addr) + 2, address, op_bytes,
		addr.ea += 2;
		rc = ops->read_std(linear(ctxt, addr), address, op_bytes,
		ctxt->vcpu, NULL);
		return rc;
		}