[Xen-changelog] [xen-unstable] svm: add bit definitions for SVM DecodeAssist

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Andre Przywara <andre.przywara@xxxxxxx>
# Date 1303116553 -3600
# Node ID bf7afd48339a18cd86d89337f3c055045fb78d3b
# Parent  1276926e3795b11ef6ac2f59df900d8e0ba9f54b
svm: add bit definitions for SVM DecodeAssist

Chapter 15.33 of recent APM Vol.2 manuals describe some additions
to SVM called DecodeAssist. Add the newly added fields to the VMCB
structure and name the associated CPUID bit.

Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
---


diff -r 1276926e3795 -r bf7afd48339a xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c        Mon Apr 18 09:47:12 2011 +0100
+++ b/xen/arch/x86/hvm/svm/svm.c        Mon Apr 18 09:49:13 2011 +0100
@@ -1000,6 +1000,7 @@
     P(cpu_has_svm_lbrv, "Last Branch Record (LBR) Virtualisation");
     P(cpu_has_svm_nrips, "Next-RIP Saved on #VMEXIT");
     P(cpu_has_svm_cleanbits, "VMCB Clean Bits");
+    P(cpu_has_svm_decode, "DecodeAssists");
     P(cpu_has_pause_filter, "Pause-Intercept Filter");
 #undef P
 
diff -r 1276926e3795 -r bf7afd48339a xen/include/asm-x86/hvm/svm/svm.h
--- a/xen/include/asm-x86/hvm/svm/svm.h Mon Apr 18 09:47:12 2011 +0100
+++ b/xen/include/asm-x86/hvm/svm/svm.h Mon Apr 18 09:49:13 2011 +0100
@@ -90,6 +90,7 @@
 #define cpu_has_svm_svml      cpu_has_svm_feature(SVM_FEATURE_SVML)
 #define cpu_has_svm_nrips     cpu_has_svm_feature(SVM_FEATURE_NRIPS)
 #define cpu_has_svm_cleanbits cpu_has_svm_feature(SVM_FEATURE_VMCBCLEAN)
+#define cpu_has_svm_decode    cpu_has_svm_feature(SVM_FEATURE_DECODEASSISTS)
 #define cpu_has_pause_filter  cpu_has_svm_feature(SVM_FEATURE_PAUSEFILTER)
 
 #define SVM_PAUSEFILTER_INIT    3000
diff -r 1276926e3795 -r bf7afd48339a xen/include/asm-x86/hvm/svm/vmcb.h
--- a/xen/include/asm-x86/hvm/svm/vmcb.h        Mon Apr 18 09:47:12 2011 +0100
+++ b/xen/include/asm-x86/hvm/svm/vmcb.h        Mon Apr 18 09:49:13 2011 +0100
@@ -435,7 +435,9 @@
     vmcbcleanbits_t cleanbits;  /* offset 0xC0 */
     u32 res09;                  /* offset 0xC4 */
     u64 nextrip;                /* offset 0xC8 */
-    u64 res10a[102];            /* offset 0xD0 pad to save area */
+    u8  guest_ins_len;          /* offset 0xD0 */
+    u8  guest_ins[15];          /* offset 0xD1 */
+    u64 res10a[100];            /* offset 0xE0 pad to save area */
 
     svm_segment_register_t es;  /* offset 1024 - cleanbit 8 */
     svm_segment_register_t cs;  /* cleanbit 8 */

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