From: Alexandre Derumier <aderumier@odiso.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH v3 qemu-server 4/7] cpuconfig: add get_host_cpu_flags
Date: Mon, 22 May 2023 12:25:25 +0200 [thread overview]
Message-ID: <20230522102528.186955-7-aderumier@odiso.com> (raw)
In-Reply-To: <20230522102528.186955-1-aderumier@odiso.com>
parse cpuinfo flags && msr and create an hash with all flags
convert to qemu naming if needed
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
---
PVE/QemuServer/CPUConfig.pm | 70 +++++++++++++++++++++++++++++++++++++
1 file changed, 70 insertions(+)
diff --git a/PVE/QemuServer/CPUConfig.pm b/PVE/QemuServer/CPUConfig.pm
index 64be1f4..45bf26f 100644
--- a/PVE/QemuServer/CPUConfig.pm
+++ b/PVE/QemuServer/CPUConfig.pm
@@ -13,6 +13,7 @@ use base qw(PVE::SectionConfig Exporter);
our @EXPORT_OK = qw(
print_cpu_device
get_cpu_options
+get_host_cpu_flags
);
# under certain race-conditions, this module might be loaded before pve-cluster
@@ -626,6 +627,75 @@ sub get_cpu_from_running_vm {
return $1;
}
+sub get_host_cpu_flags {
+ my ($cpuinfo) = @_;
+
+ my $res = {};
+
+ #some qemu flag have different name than cpuinfo
+ my $map = {
+ 'sse4_1' => 'sse4.1',
+ 'sse4_2' => 'sse4.2',
+ 'tsc_deadline_timer' => 'tsc-deadline',
+ 'pclmulqdq' => 'pclmuldq',
+ 'arch_capabilities' => 'arch-capabilities',
+ 'avx512_vnni' => 'avx512vnni',
+ 'avx512_bf16' => 'avx512-bf16',
+ 'avx512_vpopcntdq' => 'avx512-vpopcntdq',
+ 'avx512_vbmi2' => 'avx512vbmi2',
+ 'avx512_bitalg' => 'avx512bitalg',
+ 'avx512_fp16' => 'avx512-fp16',
+ 'sha_ni' => 'sha-ni',
+ 'cr8_legacy' => 'cr8legacy',
+ 'nrip_save' => 'nrip-save',
+ 'amx_bf16' => 'amx-bf16',
+ 'avx_vnni' => 'avx-vnni',
+ 'amx_int8' => 'amx-int8',
+ 'amx_tile' => 'amx-tile',
+ 'bus_lock_detect' => 'bus-lock-detect',
+ 'tsxldtrk' => 'tsx-ldtrk',
+ };
+
+ if ($cpuinfo->{vendor} eq 'AuthenticAMD') {
+ $map->{ssbd} = 'amd-ssbd';
+ $map->{stibp} = 'amd-stibp';
+ }
+
+ my @flags = split ' ', $cpuinfo->{'flags'};
+ foreach my $flag (@flags) {
+ $flag = $map->{$flag} if $map->{$flag};
+ next if !$qemu_supported_flags->{$flag};
+ $res->{$flag} = 1;
+ }
+
+ #spec-ctrl msr
+ my $spectre_msr = $cpuinfo->{msr}->{'spec-ctrl'};
+ $res->{'spec-ctrl'} = 1 if defined($spectre_msr) && $spectre_msr == 0;
+
+ #arch-capabilities msr
+ my $capabilities = {
+ 'rdctl-no' => 0,
+ 'ibrs-all' => 1,
+ 'rsba' => 2,
+ 'skip-l1dfl-vmentry' => 3,
+ 'ssb-no' => 4,
+ 'mds-no' => 5,
+ 'pschange-mc-no' => 6,
+ 'tsx-ctrl' => 7,
+ 'taa-no' => 8,
+ 'fb-clear' => 17
+ };
+
+ if ($cpuinfo->{msr}->{'arch-capabilities'}) {
+ foreach my $capabilitie (keys %$capabilities) {
+ my $value = $capabilities->{$capabilitie};
+ $res->{$capabilitie} = 1 if $cpuinfo->{msr}->{'arch-capabilities'} >> $value & 1;
+ }
+ }
+
+ return $res;
+}
+
__PACKAGE__->register();
__PACKAGE__->init();
--
2.30.2
next prev parent reply other threads:[~2023-05-22 10:26 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-22 10:25 [pve-devel] [PATCH-SERIES v3 qemu-server/manager/common] add and set x86-64-v2 as default model for new vms and detect best cpumodel Alexandre Derumier
2023-05-22 10:25 ` [pve-devel] [PATCH v3 qemu-server 1/7] cpuconfig: add new x86-64-vX models Alexandre Derumier
2023-05-31 11:08 ` Fiona Ebner
2023-05-31 15:08 ` DERUMIER, Alexandre
2023-06-01 9:17 ` Fiona Ebner
2023-06-01 11:27 ` DERUMIER, Alexandre
2023-05-22 10:25 ` [pve-devel] [PATCH v2 pve-manager 1/1] qemu: processor : set x86-64-v2 as default cputype for create wizard Alexandre Derumier
2023-05-22 10:25 ` [pve-devel] [PATCH pve-common 1/1] read_cpuinfo: add msr support Alexandre Derumier
2023-05-22 10:25 ` [pve-devel] [PATCH v3 qemu-server 2/7] cpumodel: add cpu models with flags Alexandre Derumier
2023-05-22 10:25 ` [pve-devel] [PATCH v3 qemu-server 3/7] cpumodel: compute qemu supported flags Alexandre Derumier
2023-05-22 10:25 ` Alexandre Derumier [this message]
2023-05-22 10:25 ` [pve-devel] [PATCH v3 qemu-server 5/7] cpuconfig: add find_best_cpumodel Alexandre Derumier
2023-05-22 10:25 ` [pve-devel] [PATCH v3 qemu-server 6/7] cpuconfig: add find_hosts_common_flags Alexandre Derumier
2023-05-22 10:25 ` [pve-devel] [PATCH v3 qemu-server 7/7] add best cpu model detection tests Alexandre Derumier
2023-05-31 11:36 ` [pve-devel] [PATCH-SERIES v3 qemu-server/manager/common] add and set x86-64-v2 as default model for new vms and detect best cpumodel Fiona Ebner
2023-05-31 14:34 ` DERUMIER, Alexandre
2023-06-01 8:34 ` Fiona Ebner
2023-06-01 9:06 ` DERUMIER, Alexandre
2023-06-03 14:14 ` Thomas Lamprecht
2023-06-04 6:29 ` DERUMIER, Alexandre
2023-06-03 14:05 ` Thomas Lamprecht
2023-06-01 9:34 ` Fiona Ebner
2023-06-01 11:37 ` DERUMIER, Alexandre
2023-06-01 13:53 ` DERUMIER, Alexandre
2023-06-01 15:56 ` Fiona Ebner
2023-06-01 21:15 ` DERUMIER, Alexandre
2023-06-02 7:28 ` Fiona Ebner
2023-06-02 9:13 ` DERUMIER, Alexandre
2023-06-02 11:13 ` Fiona Ebner
2023-06-02 11:44 ` DERUMIER, Alexandre
2023-06-03 14:21 ` Thomas Lamprecht
[not found] ` <8277a27b-a70f-b731-69f7-fc9ae69b2da2@binovo.es>
2023-06-01 16:00 ` Fiona Ebner
2023-06-02 12:41 ` Aaron Lauterer
2023-06-02 14:15 ` DERUMIER, Alexandre
2023-06-02 16:09 ` Aaron Lauterer
2023-06-02 16:27 ` DERUMIER, Alexandre
[not found] ` <fa3565e5-3a9c-9348-f291-554a0e0d6628@binovo.es>
2023-06-06 9:15 ` Fiona Ebner
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