UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

KVM: x86 emulator: If LOCK prefix is used dest arg should be memory. 

If LOCK prefix is used dest arg should be memory, otherwise instruction
should generate #UD.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Gleb Natapov 2010-03-18 15:20:14 +02:00 committed by Avi Kivity
parent fd5253658b
commit a41ffb7540
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kvm/emulate.c
View File

@ -1842,7 +1842,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
}
/* LOCK prefix is allowed only with some instructions */
if (c->lock_prefix && !(c->d & Lock)) {
if (c->lock_prefix && (!(c->d & Lock) || c->dst.type != OP_MEM)) {
kvm_queue_exception(ctxt->vcpu, UD_VECTOR);
goto done;
}