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authorAvi Kivity <avi@redhat.com>2010-11-17 15:28:22 +0200
committerAvi Kivity <avi@redhat.com>2011-01-12 11:29:36 +0200
commit30b31ab6823988263c72a215fb875edec6161250 (patch)
tree8385e5888f956d2df04b1dcc91fbe14458082ae7 /arch
parent90de84f50b425805bf7ddc430143ed2e224ebd8e (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/emulate.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index e96705542634..bdbbb1839e89 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -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;
}