From b15bc1693cfdab0dfa250c791b1dadab73994c0a Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Tue, 13 Mar 2012 15:09:25 +0100 Subject: [PATCH 2/3] add Opteron_G4 CPU model (v2) RH-Author: Eduardo Habkost Message-id: <1331651366-9586-3-git-send-email-ehabkost@redhat.com> Patchwork-id: 38487 O-Subject: [RHEL6 qemu-kvm PATCH 2/3] add Opteron_G4 CPU model (v2) Bugzilla: 767302 RH-Acked-by: Markus Armbruster RH-Acked-by: Alex Williamson RH-Acked-by: Gleb Natapov Bugzilla: 767302 Upstream: applied (cherry picked from commit 885bb0369a4f0abe2c0185178f3cb347cb02cdf1) Changes v1 -> v2: - Disabled ffxsr flag, that was not tested This patch addes a Bulldozer-based Opteron_G4 CPU model. This version has the ffxsr bit actually disabled, to match what was documented below. Thanks to Andre Przywara for spotting the bug. I am trying to be conservative with the new model, so I am enabling only features known to be useful to guests, and not enabling anything that was not tested or found to be useful to a guest. List of missing flags in comparison to real hardware: - vme: host-specific feature. - osxsave: it is not set here because it is set by the guest OS, not by KVM - monitor: this is filtered out by the KVM module, so no point in enabling it. - mmxext: untested, so not enabled. - Perf*, Topology*, lwp, ibs: not emulated by KVM. - wdt, skinit, osvw, altmovcr8, extapicspace, cmplegacy: untested, so not enabled. List of new flags, in comparison to the Opteron_G3 model: - xsave: xsave feature, already implemented by Qemu - avx, aes, sse4.x, ssse3, pclmulqdq: all new state the new instructions could use is handled by the xsave state loading/saving code on Qemu. - pdpe1gb: 1GB pages, supported by the KVM kernel module. - ffxsr: untested, so not enabled - fma4, xop: all new state the new instructions could use is handled by the xsave loading/saving code on Qemu. - 3dnowprefetch: safe to pass through, though the flag is not used by Linux guests, at least. Below is the comparison between the current Opteron_G3 model and the new model being added. - 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 Opteron_G4 model. - The "new" line shows the flags that were not on the Opteron_G3 model but are on Opteron_G4. feature_edx: Opteron_G3: sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de fpu full: sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de vme fpu Opteron_G4: sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de fpu missing: vme feature_ecx: Opteron_G3: popcnt cx16 monitor sse3 full: avx osxsave xsave aes popcnt sse4.2 sse4.1 cx16 ssse3 monitor pclmulqdq sse3 Opteron_G4: avx xsave aes popcnt sse4.2 sse4.1 cx16 ssse3 pclmulqdq sse3 missing: osxsave monitor new: avx xsave aes sse4.2 sse4.1 ssse3 pclmulqdq extfeature_edx: Opteron_G3: lm rdtscp fxsr mmx nx pse36 pat cmov mca pge mtrr syscall apic cx8 mce pae msr tsc pse de fpu full: lm rdtscp pdpe1gb ffxsr fxsr mmx mmxext nx pse36 pat cmov mca pge mtrr syscall apic cx8 mce pae msr tsc pse de vme fpu Opteron_G4: lm rdtscp pdpe1gb fxsr mmx nx pse36 pat cmov mca pge mtrr syscall apic cx8 mce pae msr tsc pse de fpu missing: mmxext vme new: pdpe1gb extfeature_ecx: Opteron_G3: misalignsse sse4a abm svm lahf_lm full: Perf* Topology* fma4 lwp wdt skinit xop ibs osvw 3dnowprefetch misalignsse sse4a abm altmovcr8 extapicspace svm cmplegacy lahf_lm Opteron_G4: fma4 xop 3dnowprefetch misalignsse sse4a abm svm lahf_lm new: fma4 xop 3dnowprefetch missing: Perf* Topology* lwp wdt skinit ibs osvw altmovcr8 extapicspace cmplegacy Changes v1 -> v2: - Actually disable ffxsr bit Cc: mkletzan@redhat.com Cc: armbru@redhat.com Cc: alex.williamson@redhat.com Signed-off-by: Eduardo Habkost Signed-off-by: Anthony Liguori --- sysconfigs/target/cpu-x86_64.conf | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) Signed-off-by: Michal Novotny --- 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 9e51443..9ad7fac 100644 --- a/sysconfigs/target/cpu-x86_64.conf +++ b/sysconfigs/target/cpu-x86_64.conf @@ -125,3 +125,17 @@ extfeature_ecx = "misalignsse sse4a abm svm lahf_lm" xlevel = "0x80000008" model_id = "AMD Opteron 23xx (Gen 3 Class Opteron)" + +[cpudef] + name = "Opteron_G4" + level = "0xd" + vendor = "AuthenticAMD" + family = "21" + model = "1" + stepping = "2" + 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 sse4.2 sse4.1 cx16 ssse3 pclmulqdq sse3" + extfeature_edx = "lm rdtscp pdpe1gb fxsr mmx nx pse36 pat cmov mca pge mtrr syscall apic cx8 mce pae msr tsc pse de fpu" + extfeature_ecx = " fma4 xop 3dnowprefetch misalignsse sse4a abm svm lahf_lm" + xlevel = "0x8000001A" + model_id = "AMD Opteron 62xx class CPU" -- 1.7.7.6