[Qemu-devel] [PATCH] enable SVM EFER bit

[Alexander Graf <agraf@suse.de>]

[-- Attachment #1: Type: text/plain, Size: 327 bytes --]

Due to the recently introduces checks for SVM activation, the SVM 
instructions currently throw a #UD exception if they are not activated. 
The activation happens through a write to the EFER which does not 
support the SVM bit yet.

This patch adds the SVME bit to the EFER MSR write. It makes KVM work 
for me again.

Alex




[-- Attachment #2: svm.patch --]
[-- Type: text/x-patch, Size: 567 bytes --]

Index: target-i386/op_helper.c
===================================================================
--- target-i386/op_helper.c	(revision 4652)
+++ target-i386/op_helper.c	(working copy)
@@ -3069,6 +3069,8 @@
                 update_mask |= MSR_EFER_FFXSR;
             if (env->cpuid_ext2_features & CPUID_EXT2_NX)
                 update_mask |= MSR_EFER_NXE;
+            if (env->cpuid_ext3_features & CPUID_EXT3_SVM)
+                update_mask |= MSR_EFER_SVME;
             env->efer = (env->efer & ~update_mask) |
             (val & update_mask);
         }