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

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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>
This commit is contained in:
Avi Kivity 2010-11-17 15:28:22 +02:00
parent 90de84f50b
commit 30b31ab682
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kvm/emulate.c
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@ -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;
}