From 3894f182a3dec5f60f15e6c483bad60b001e9088 Mon Sep 17 00:00:00 2001
From: Eduardo Habkost <ehabkost@redhat.com>
Date: Tue, 13 Mar 2012 15:09:26 +0100
Subject: [PATCH 3/3] add SandyBridge CPU model (v2)
RH-Author: Eduardo Habkost <ehabkost@redhat.com>
Message-id: <1331651366-9586-4-git-send-email-ehabkost@redhat.com>
Patchwork-id: 38485
O-Subject: [RHEL6 qemu-kvm PATCH 3/3] add SandyBridge CPU model (v2)
Bugzilla: 760953
RH-Acked-by: Markus Armbruster <armbru@redhat.com>
RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
RH-Acked-by: Gleb Natapov <gleb@redhat.com>
Bugzilla: 760953
Upstream: applied
(cherry picked from commit c34ea31416a9631b0a552afa08b99ec29cf44272)
Differences from upstream:
- RHEL6 KVM kernel module doesn't have tsc-deadline support so our
version doesn't have it
Changes v1 -> v2:
- Use "i64" flag name instead of "lm", to match more closely the upstream
version
This patches add the definition of a SandyBridge CPU model.
Summary of differences:
Flags present on actual hardware, but not on the added model definition:
- pbe, tm, ht, ss, acpi, vme, xTPR, tm2, eist, smx: host-specific
features, not exposed to guest.
- ds, ds-cpl, dtes64, pdcm: emulation not supported by KVM (although it
may be added in the future if implementing PMU virtualization)
- pcid, vmx, monitor: not emulated by Qemu/KVM right now.
- osxsave: set by the guest OS, not by Qemu.
- tsc-deadline: not supported on RHEL6
Flags added, that were not present on Westmere model:
- xsave: already supported by Qemu
- avx, pclmulqdq: all new state the new instructions could use is
handled by xsave state loading/saving code.
- x2apic, rdtscp: already supported by Qemu/KVM.
Below there's a comparison of the features on the current Westmere CPU
model, and the SandyBridge CPU model.
- The "full" line contains the flags found on actual hardware.
- The "missing" line shows the flags that are present on actual
hardware, but not on the added SandyBridge model.
- The "new" line shows the flags that were not on the Westmere model,
but are on SandyBridge.
feature_edx:
Westmere: sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de fpu
full: pbe tm ht ss sse2 sse fxsr mmx ds acpi clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pge msr tsc pse de vme fpu
SandyBridge: sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de fpu
missing: pbe tm ht ss ds acpi vme
feature_ecx:
Westmere: aes popcnt sse4.2 sse4.1 cx16 ssse3 sse3
full: avx osxsave xsave aes tsc-deadline popcnt x2apic sse4.2 sse4.1 pcid pdcm xTPR cx16 ssse3 tm2 eist smx vmx ds-cpl monitor dtes64 pclmulqdq sse3
SandyBridge: avx xsave aes popcnt x2apic sse4.2 sse4.1 cx16 ssse3 pclmulqdq sse3
missing: osxsave tsc-deadline pcid pdcm xTPR tm2 eist smx vmx ds-cpl monitor dtes64
new: avx xsave x2apic pclmulqdq
extfeature_edx:
Westmere: i64 nx syscall
full: i64 rdtscp nx syscall
SandyBridge: i64 rdtscp nx syscall
new: rdtscp
extfeature_ecx:
Westmere: lahf_lm
full: lahf_lm
SandyBridge: lahf_lm
Cc: pkrempa@redhat.com
Cc: ddutile@redhat.com
Cc: ddugger@redhat.com
Cc: armbru@redhat.com
Cc: alex.williamson@redhat.com
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
sysconfigs/target/cpu-x86_64.conf | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
Signed-off-by: Michal Novotny <minovotn@redhat.com>
---
sysconfigs/target/cpu-x86_64.conf | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/sysconfigs/target/cpu-x86_64.conf b/sysconfigs/target/cpu-x86_64.conf
index 9ad7fac..c6ef9d7 100644
--- a/sysconfigs/target/cpu-x86_64.conf
+++ b/sysconfigs/target/cpu-x86_64.conf
@@ -85,6 +85,20 @@
model_id = "Westmere E56xx/L56xx/X56xx (Nehalem-C)"
[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 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)"
+
+[cpudef]
name = "Opteron_G1"
level = "5"
vendor = "AuthenticAMD"
--
1.7.7.6