KVM: x86: correctly initialize the CS base on reset
The CS base was initialized to 0 on VMX (wrong, but usually overridden
by userspace before starting) or 0xf0000 on SVM. The correct value is
0xffff0000, and VMX is able to emulate it now, so use it.
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 7219a40..7a46c1f 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1131,17 +1131,11 @@
init_seg(&save->gs);
save->cs.selector = 0xf000;
+ save->cs.base = 0xffff0000;
/* Executable/Readable Code Segment */
save->cs.attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK |
SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK;
save->cs.limit = 0xffff;
- /*
- * cs.base should really be 0xffff0000, but vmx can't handle that, so
- * be consistent with it.
- *
- * Replace when we have real mode working for vmx.
- */
- save->cs.base = 0xf0000;
save->gdtr.limit = 0xffff;
save->idtr.limit = 0xffff;