diff mbox

[10/31] kvm: x86: Remove obsolete SS.RPL/DPL aligment

Message ID 3980e3024b2d1677a9910de5e35d22d5d8392522.1295859760.git.mtosatti@redhat.com
State New
Headers show

Commit Message

Marcelo Tosatti Jan. 24, 2011, 9:02 a.m. UTC 
From: Jan Kiszka <jan.kiszka@siemens.com>

This seems to date back to the days KVM didn't support real mode. The
check is no longer needed and, even worse, is corrupting the guest state
in case SS.RPL != DPL.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
 target-i386/kvm.c |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)
diff mbox

Patch

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index ee7bdf8..7e5982b 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -780,13 +780,6 @@  static int kvm_put_sregs(CPUState *env)
 	    set_seg(&sregs.fs, &env->segs[R_FS]);
 	    set_seg(&sregs.gs, &env->segs[R_GS]);
 	    set_seg(&sregs.ss, &env->segs[R_SS]);
-
-	    if (env->cr[0] & CR0_PE_MASK) {
-		/* force ss cpl to cs cpl */
-		sregs.ss.selector = (sregs.ss.selector & ~3) |
-			(sregs.cs.selector & 3);
-		sregs.ss.dpl = sregs.ss.selector & 3;
-	    }
     }
 
     set_seg(&sregs.tr, &env->tr);