[libvirt] [PATCH] cpu: Add cpu definition for Intel Sandy Bridge cpu type

[Peter Krempa]

This patch adds support for the new tsc-deadline feature flag
and a new model to the supported model list describing the
Intel Sandy Bridge platform.
---
Patches adding the SandyBridge cpu type in qemu are on review and not upstream yet. Please
don't prioritize this patch. I sent it for review as the chance that nothing will change is
greater than I'll have to post another version. Qemu upstream review:

    http://lists.nongnu.org/archive/html/qemu-devel/2012-03/msg00914.html

(I'll push this only after qemu will add this functionality upstream)

Review help (c&p from the patches):

tsc-deadline flag:

static const char *ext_feature_name[] = {
     "fma", "cx16", "xtpr", "pdcm",
     NULL, NULL, "dca", "sse4.1|sse4_1",
     "sse4.2|sse4_2", "x2apic", "movbe", "popcnt",
-    NULL, "aes", "xsave", "osxsave",
+    "tsc-deadline", "aes", "xsave", "osxsave",
     "avx", NULL, NULL, "hypervisor",
 };

SandyBridge model:

[cpudef]
+   name = "SandyBridge"
+   level = "0xd"
+   vendor = "GenuineIntel"
+   family = "6"
+   model = "42"
+   stepping = "1"
+   feature_edx = " sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de fpu"
+   feature_ecx = "avx xsave aes tsc-deadline popcnt x2apic sse4.2 sse4.1 cx16 ssse3 pclmulqdq sse3"
+   extfeature_edx = "i64 rdtscp nx syscall "
+   extfeature_ecx = "lahf_lm"
+   xlevel = "0x8000000A"
+   model_id = "Intel Xeon E312xx (Sandy Bridge)"

(note that the sse3 flag is in libvirt known as pni and i64 is known as lm)

 src/cpu/cpu_map.xml |   45 +++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 45 insertions(+), 0 deletions(-)

diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
index 7ef230e..f79a727 100644
--- a/src/cpu/cpu_map.xml
+++ b/src/cpu/cpu_map.xml
@@ -160,6 +160,9 @@
     <feature name='popcnt'> <!-- CPUID_EXT_POPCNT -->
       <cpuid function='0x00000001' ecx='0x00800000'/>
     </feature>
+    <feature name='tsc-deadline'>
+      <cpuid function='0x00000001' ecx='0x01000000'/>
+    </feature>
     <feature name='aes'>
       <cpuid function='0x00000001' ecx='0x02000000'/>
     </feature>
@@ -595,6 +598,48 @@
       <feature name='aes'/>
     </model>

+    <model name='SandyBridge'>
+      <vendor name='Intel'/>
+      <feature name='aes'/>
+      <feature name='apic'/>
+      <feature name='avx'/>
+      <feature name='clflush'/>
+      <feature name='cmov'/>
+      <feature name='cx16'/>
+      <feature name='cx8'/>
+      <feature name='de'/>
+      <feature name='fpu'/>
+      <feature name='fxsr'/>
+      <feature name='lahf_lm'/>
+      <feature name='lm'/>
+      <feature name='mca'/>
+      <feature name='mce'/>
+      <feature name='mmx'/>
+      <feature name='msr'/>
+      <feature name='mtrr'/>
+      <feature name='nx'/>
+      <feature name='pae'/>
+      <feature name='pat'/>
+      <feature name='pclmuldq'/>
+      <feature name='pge'/>
+      <feature name='pni'/>
+      <feature name='popcnt'/>
+      <feature name='pse'/>
+      <feature name='pse36'/>
+      <feature name='rdtscp'/>
+      <feature name='sep'/>
+      <feature name='sse'/>
+      <feature name='sse2'/>
+      <feature name='sse4.1'/>
+      <feature name='sse4.2'/>
+      <feature name='ssse3'/>
+      <feature name='syscall'/>
+      <feature name='tsc'/>
+      <feature name='tsc-deadline'/>
+      <feature name='x2apic'/>
+      <feature name='xsave'/>
+    </model>
+
     <model name='Opteron_G1'>
       <vendor name='AMD'/>
       <feature name='sse2'/>
-- 
1.7.3.4