From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [PATCH qemu-server 2/2] cpu config: use static CPU model list shipped by QEMU package if available
Date: Tue, 10 Feb 2026 14:52:29 +0100 [thread overview]
Message-ID: <20260210135417.184127-3-f.ebner@proxmox.com> (raw)
In-Reply-To: <20260210135417.184127-1-f.ebner@proxmox.com>
Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
Requires the following series by Dominik to be applied:
https://lore.proxmox.com/pve-devel/20260205141959.3615131-1-d.csapak@proxmox.com/T/
src/PVE/QemuServer/CPUConfig.pm | 237 +++++++++++++++++---------------
1 file changed, 126 insertions(+), 111 deletions(-)
diff --git a/src/PVE/QemuServer/CPUConfig.pm b/src/PVE/QemuServer/CPUConfig.pm
index 165c48a7..a52e7815 100644
--- a/src/PVE/QemuServer/CPUConfig.pm
+++ b/src/PVE/QemuServer/CPUConfig.pm
@@ -104,119 +104,134 @@ my $all_cpu_models;
# helper to make it easier for testing
# initializes both '$cpu_models_by_arch' and '$all_cpu_models'
sub initialize_cpu_models {
- $cpu_models_by_arch = {
- x86_64 => {
- # Intel CPUs
- 486 => 'GenuineIntel',
- pentium => 'GenuineIntel',
- pentium2 => 'GenuineIntel',
- pentium3 => 'GenuineIntel',
- coreduo => 'GenuineIntel',
- core2duo => 'GenuineIntel',
- Conroe => 'GenuineIntel',
- Penryn => 'GenuineIntel',
- Nehalem => 'GenuineIntel',
- 'Nehalem-IBRS' => 'GenuineIntel',
- Westmere => 'GenuineIntel',
- 'Westmere-IBRS' => 'GenuineIntel',
- SandyBridge => 'GenuineIntel',
- 'SandyBridge-IBRS' => 'GenuineIntel',
- IvyBridge => 'GenuineIntel',
- 'IvyBridge-IBRS' => 'GenuineIntel',
- Haswell => 'GenuineIntel',
- 'Haswell-IBRS' => 'GenuineIntel',
- 'Haswell-noTSX' => 'GenuineIntel',
- 'Haswell-noTSX-IBRS' => 'GenuineIntel',
- Broadwell => 'GenuineIntel',
- 'Broadwell-IBRS' => 'GenuineIntel',
- 'Broadwell-noTSX' => 'GenuineIntel',
- 'Broadwell-noTSX-IBRS' => 'GenuineIntel',
- 'Skylake-Client' => 'GenuineIntel',
- 'Skylake-Client-IBRS' => 'GenuineIntel',
- 'Skylake-Client-noTSX-IBRS' => 'GenuineIntel',
- 'Skylake-Client-v4' => 'GenuineIntel',
- 'Skylake-Server' => 'GenuineIntel',
- 'Skylake-Server-IBRS' => 'GenuineIntel',
- 'Skylake-Server-noTSX-IBRS' => 'GenuineIntel',
- 'Skylake-Server-v4' => 'GenuineIntel',
- 'Skylake-Server-v5' => 'GenuineIntel',
- 'Cascadelake-Server' => 'GenuineIntel',
- 'Cascadelake-Server-v2' => 'GenuineIntel',
- 'Cascadelake-Server-noTSX' => 'GenuineIntel',
- 'Cascadelake-Server-v4' => 'GenuineIntel',
- 'Cascadelake-Server-v5' => 'GenuineIntel',
- 'Cooperlake' => 'GenuineIntel',
- 'Cooperlake-v2' => 'GenuineIntel',
- KnightsMill => 'GenuineIntel',
- 'Icelake-Client' => 'GenuineIntel', # depreacated, removed with QEMU 7.1
- 'Icelake-Client-noTSX' => 'GenuineIntel', # depreacated, removed with QEMU 7.1
- 'Icelake-Server' => 'GenuineIntel',
- 'Icelake-Server-noTSX' => 'GenuineIntel',
- 'Icelake-Server-v3' => 'GenuineIntel',
- 'Icelake-Server-v4' => 'GenuineIntel',
- 'Icelake-Server-v5' => 'GenuineIntel',
- 'Icelake-Server-v6' => 'GenuineIntel',
- 'Icelake-Server-v7' => 'GenuineIntel',
- 'SapphireRapids' => 'GenuineIntel',
- 'SapphireRapids-v2' => 'GenuineIntel',
- 'SapphireRapids-v3' => 'GenuineIntel',
- 'SapphireRapids-v4' => 'GenuineIntel',
- 'GraniteRapids' => 'GenuineIntel',
- 'GraniteRapids-v2' => 'GenuineIntel',
- 'GraniteRapids-v3' => 'GenuineIntel',
- 'SierraForest' => 'GenuineIntel',
- 'SierraForest-v2' => 'GenuineIntel',
- 'SierraForest-v3' => 'GenuineIntel',
- 'ClearwaterForest' => 'GenuineIntel',
+ my $cpu_models_x86_64_file = '/usr/share/kvm/cpu-models-x86_64.json';
+ my $cpu_models_aarch64_file = '/usr/share/kvm/cpu-models-aarch64.json';
- # AMD CPUs
- athlon => 'AuthenticAMD',
- phenom => 'AuthenticAMD',
- Opteron_G1 => 'AuthenticAMD',
- Opteron_G2 => 'AuthenticAMD',
- Opteron_G3 => 'AuthenticAMD',
- Opteron_G4 => 'AuthenticAMD',
- Opteron_G5 => 'AuthenticAMD',
- EPYC => 'AuthenticAMD',
- 'EPYC-IBPB' => 'AuthenticAMD',
- 'EPYC-v3' => 'AuthenticAMD',
- 'EPYC-v4' => 'AuthenticAMD',
- 'EPYC-v5' => 'AuthenticAMD',
- 'EPYC-Rome' => 'AuthenticAMD',
- 'EPYC-Rome-v2' => 'AuthenticAMD',
- 'EPYC-Rome-v3' => 'AuthenticAMD',
- 'EPYC-Rome-v4' => 'AuthenticAMD',
- 'EPYC-Rome-v5' => 'AuthenticAMD',
- 'EPYC-Milan' => 'AuthenticAMD',
- 'EPYC-Milan-v2' => 'AuthenticAMD',
- 'EPYC-Milan-v3' => 'AuthenticAMD',
- 'EPYC-Genoa' => 'AuthenticAMD',
- 'EPYC-Genoa-v2' => 'AuthenticAMD',
- 'EPYC-Turin' => 'AuthenticAMD',
+ if (-f $cpu_models_x86_64_file) { # QEMU package is new enough to ship static model files
+ my $json_text = PVE::Tools::file_get_contents($cpu_models_x86_64_file);
+ ($json_text) = $json_text =~ /(.*)/; # untaint
+ $cpu_models_by_arch->{'x86_64'} = eval { decode_json($json_text) }
+ or die "unable to decode contents of '$cpu_models_x86_64_file' - $@\n";
- # generic types, use vendor from host node
- kvm32 => 'default',
- kvm64 => 'default',
- qemu32 => 'default',
- qemu64 => 'default',
- max => 'default',
- },
- aarch64 => {
- 'a64fx' => 'ARM',
- 'cortex-a35' => 'ARM',
- 'cortex-a53' => 'ARM',
- 'cortex-a55' => 'ARM',
- 'cortex-a57' => 'ARM',
- 'cortex-a710' => 'ARM',
- 'cortex-a72' => 'ARM',
- 'cortex-a76' => 'ARM',
- 'neoverse-n1' => 'ARM',
- 'neoverse-n2' => 'ARM',
- 'neoverse-v1' => 'ARM',
- # 32 bit and deprecated models were not added
- max => 'default',
- },
- };
+ $json_text = PVE::Tools::file_get_contents($cpu_models_aarch64_file);
+ ($json_text) = $json_text =~ /(.*)/; # untaint
+ $cpu_models_by_arch->{'aarch64'} = eval { decode_json($json_text) }
+ or die "unable to decode contents of '$cpu_models_aarch64_file' - $@\n";
+ } else { # FIXME PVE 10.x - remove hard-coded list
+ $cpu_models_by_arch = {
+ x86_64 => {
+ # Intel CPUs
+ 486 => 'GenuineIntel',
+ pentium => 'GenuineIntel',
+ pentium2 => 'GenuineIntel',
+ pentium3 => 'GenuineIntel',
+ coreduo => 'GenuineIntel',
+ core2duo => 'GenuineIntel',
+ Conroe => 'GenuineIntel',
+ Penryn => 'GenuineIntel',
+ Nehalem => 'GenuineIntel',
+ 'Nehalem-IBRS' => 'GenuineIntel',
+ Westmere => 'GenuineIntel',
+ 'Westmere-IBRS' => 'GenuineIntel',
+ SandyBridge => 'GenuineIntel',
+ 'SandyBridge-IBRS' => 'GenuineIntel',
+ IvyBridge => 'GenuineIntel',
+ 'IvyBridge-IBRS' => 'GenuineIntel',
+ Haswell => 'GenuineIntel',
+ 'Haswell-IBRS' => 'GenuineIntel',
+ 'Haswell-noTSX' => 'GenuineIntel',
+ 'Haswell-noTSX-IBRS' => 'GenuineIntel',
+ Broadwell => 'GenuineIntel',
+ 'Broadwell-IBRS' => 'GenuineIntel',
+ 'Broadwell-noTSX' => 'GenuineIntel',
+ 'Broadwell-noTSX-IBRS' => 'GenuineIntel',
+ 'Skylake-Client' => 'GenuineIntel',
+ 'Skylake-Client-IBRS' => 'GenuineIntel',
+ 'Skylake-Client-noTSX-IBRS' => 'GenuineIntel',
+ 'Skylake-Client-v4' => 'GenuineIntel',
+ 'Skylake-Server' => 'GenuineIntel',
+ 'Skylake-Server-IBRS' => 'GenuineIntel',
+ 'Skylake-Server-noTSX-IBRS' => 'GenuineIntel',
+ 'Skylake-Server-v4' => 'GenuineIntel',
+ 'Skylake-Server-v5' => 'GenuineIntel',
+ 'Cascadelake-Server' => 'GenuineIntel',
+ 'Cascadelake-Server-v2' => 'GenuineIntel',
+ 'Cascadelake-Server-noTSX' => 'GenuineIntel',
+ 'Cascadelake-Server-v4' => 'GenuineIntel',
+ 'Cascadelake-Server-v5' => 'GenuineIntel',
+ 'Cooperlake' => 'GenuineIntel',
+ 'Cooperlake-v2' => 'GenuineIntel',
+ KnightsMill => 'GenuineIntel',
+ 'Icelake-Client' => 'GenuineIntel', # depreacated, removed with QEMU 7.1
+ 'Icelake-Client-noTSX' => 'GenuineIntel', # depreacated, removed with QEMU 7.1
+ 'Icelake-Server' => 'GenuineIntel',
+ 'Icelake-Server-noTSX' => 'GenuineIntel',
+ 'Icelake-Server-v3' => 'GenuineIntel',
+ 'Icelake-Server-v4' => 'GenuineIntel',
+ 'Icelake-Server-v5' => 'GenuineIntel',
+ 'Icelake-Server-v6' => 'GenuineIntel',
+ 'Icelake-Server-v7' => 'GenuineIntel',
+ 'SapphireRapids' => 'GenuineIntel',
+ 'SapphireRapids-v2' => 'GenuineIntel',
+ 'SapphireRapids-v3' => 'GenuineIntel',
+ 'SapphireRapids-v4' => 'GenuineIntel',
+ 'GraniteRapids' => 'GenuineIntel',
+ 'GraniteRapids-v2' => 'GenuineIntel',
+ 'GraniteRapids-v3' => 'GenuineIntel',
+ 'SierraForest' => 'GenuineIntel',
+ 'SierraForest-v2' => 'GenuineIntel',
+ 'SierraForest-v3' => 'GenuineIntel',
+ 'ClearwaterForest' => 'GenuineIntel',
+
+ # AMD CPUs
+ athlon => 'AuthenticAMD',
+ phenom => 'AuthenticAMD',
+ Opteron_G1 => 'AuthenticAMD',
+ Opteron_G2 => 'AuthenticAMD',
+ Opteron_G3 => 'AuthenticAMD',
+ Opteron_G4 => 'AuthenticAMD',
+ Opteron_G5 => 'AuthenticAMD',
+ EPYC => 'AuthenticAMD',
+ 'EPYC-IBPB' => 'AuthenticAMD',
+ 'EPYC-v3' => 'AuthenticAMD',
+ 'EPYC-v4' => 'AuthenticAMD',
+ 'EPYC-v5' => 'AuthenticAMD',
+ 'EPYC-Rome' => 'AuthenticAMD',
+ 'EPYC-Rome-v2' => 'AuthenticAMD',
+ 'EPYC-Rome-v3' => 'AuthenticAMD',
+ 'EPYC-Rome-v4' => 'AuthenticAMD',
+ 'EPYC-Rome-v5' => 'AuthenticAMD',
+ 'EPYC-Milan' => 'AuthenticAMD',
+ 'EPYC-Milan-v2' => 'AuthenticAMD',
+ 'EPYC-Milan-v3' => 'AuthenticAMD',
+ 'EPYC-Genoa' => 'AuthenticAMD',
+ 'EPYC-Genoa-v2' => 'AuthenticAMD',
+ 'EPYC-Turin' => 'AuthenticAMD',
+
+ # generic types, use vendor from host node
+ kvm32 => 'default',
+ kvm64 => 'default',
+ qemu32 => 'default',
+ qemu64 => 'default',
+ max => 'default',
+ },
+ aarch64 => {
+ 'a64fx' => 'ARM',
+ 'cortex-a35' => 'ARM',
+ 'cortex-a53' => 'ARM',
+ 'cortex-a55' => 'ARM',
+ 'cortex-a57' => 'ARM',
+ 'cortex-a710' => 'ARM',
+ 'cortex-a72' => 'ARM',
+ 'cortex-a76' => 'ARM',
+ 'neoverse-n1' => 'ARM',
+ 'neoverse-n2' => 'ARM',
+ 'neoverse-v1' => 'ARM',
+ # 32 bit and deprecated models were not added
+ max => 'default',
+ },
+ };
+ }
my $host_arch = get_host_arch();
# The host CPU model only exists if the arch matches
--
2.47.3
prev parent reply other threads:[~2026-02-10 13:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-10 13:52 [PATCH-SERIES qemu/qemu-server 0/2] generate and ship static list of CPU models with pve-qemu-kvm Fiona Ebner
2026-02-10 13:52 ` [PATCH qemu 1/2] generate and ship static list of CPU models Fiona Ebner
2026-02-11 10:33 ` Thomas Lamprecht
2026-02-11 11:41 ` Fiona Ebner
2026-02-17 18:28 ` applied: " Thomas Lamprecht
2026-02-10 13:52 ` Fiona Ebner [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260210135417.184127-3-f.ebner@proxmox.com \
--to=f.ebner@proxmox.com \
--cc=pve-devel@lists.proxmox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.