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Commit | Line | Data |
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d786a274 SR |
1 | package PVE::QemuServer::CPUConfig; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
6 | use PVE::JSONSchema; | |
b3e89488 | 7 | use PVE::Cluster qw(cfs_register_file cfs_read_file); |
d786a274 SR |
8 | use PVE::QemuServer::Helpers qw(min_version); |
9 | ||
b3e89488 | 10 | use base qw(PVE::SectionConfig Exporter); |
d786a274 SR |
11 | |
12 | our @EXPORT_OK = qw( | |
13 | print_cpu_device | |
14 | get_cpu_options | |
15 | ); | |
16 | ||
b3e89488 SR |
17 | # under certain race-conditions, this module might be loaded before pve-cluster |
18 | # has started completely, so ensure we don't prevent the FUSE mount with our dir | |
1dbe979c | 19 | if (PVE::Cluster::check_cfs_is_mounted(1)) { |
b3e89488 SR |
20 | mkdir "/etc/pve/virtual-guest"; |
21 | } | |
22 | ||
23 | my $default_filename = "virtual-guest/cpu-models.conf"; | |
d1901fe2 TL |
24 | cfs_register_file( |
25 | $default_filename, | |
26 | sub { PVE::QemuServer::CPUConfig->parse_config(@_); }, | |
27 | sub { PVE::QemuServer::CPUConfig->write_config(@_); }, | |
28 | ); | |
b3e89488 SR |
29 | |
30 | sub load_custom_model_conf { | |
31 | return cfs_read_file($default_filename); | |
32 | } | |
33 | ||
0d6962f9 TL |
34 | my $depreacated_cpu_map = { |
35 | # there never was such a client CPU, so map it to the server one for backward compat | |
36 | 'Icelake-Client' => 'Icelake-Server', | |
37 | 'Icelake-Client-noTSX' => 'Icelake-Server-noTSX', | |
38 | }; | |
39 | ||
d786a274 SR |
40 | my $cpu_vendor_list = { |
41 | # Intel CPUs | |
42 | 486 => 'GenuineIntel', | |
43 | pentium => 'GenuineIntel', | |
44 | pentium2 => 'GenuineIntel', | |
45 | pentium3 => 'GenuineIntel', | |
46 | coreduo => 'GenuineIntel', | |
47 | core2duo => 'GenuineIntel', | |
48 | Conroe => 'GenuineIntel', | |
49 | Penryn => 'GenuineIntel', | |
50 | Nehalem => 'GenuineIntel', | |
51 | 'Nehalem-IBRS' => 'GenuineIntel', | |
52 | Westmere => 'GenuineIntel', | |
53 | 'Westmere-IBRS' => 'GenuineIntel', | |
54 | SandyBridge => 'GenuineIntel', | |
55 | 'SandyBridge-IBRS' => 'GenuineIntel', | |
56 | IvyBridge => 'GenuineIntel', | |
57 | 'IvyBridge-IBRS' => 'GenuineIntel', | |
58 | Haswell => 'GenuineIntel', | |
59 | 'Haswell-IBRS' => 'GenuineIntel', | |
60 | 'Haswell-noTSX' => 'GenuineIntel', | |
61 | 'Haswell-noTSX-IBRS' => 'GenuineIntel', | |
62 | Broadwell => 'GenuineIntel', | |
63 | 'Broadwell-IBRS' => 'GenuineIntel', | |
64 | 'Broadwell-noTSX' => 'GenuineIntel', | |
65 | 'Broadwell-noTSX-IBRS' => 'GenuineIntel', | |
66 | 'Skylake-Client' => 'GenuineIntel', | |
67 | 'Skylake-Client-IBRS' => 'GenuineIntel', | |
bb84db9d | 68 | 'Skylake-Client-noTSX-IBRS' => 'GenuineIntel', |
d786a274 SR |
69 | 'Skylake-Server' => 'GenuineIntel', |
70 | 'Skylake-Server-IBRS' => 'GenuineIntel', | |
bb84db9d | 71 | 'Skylake-Server-noTSX-IBRS' => 'GenuineIntel', |
d786a274 | 72 | 'Cascadelake-Server' => 'GenuineIntel', |
bb84db9d | 73 | 'Cascadelake-Server-noTSX' => 'GenuineIntel', |
d786a274 | 74 | KnightsMill => 'GenuineIntel', |
0d6962f9 TL |
75 | 'Icelake-Client' => 'GenuineIntel', # depreacated, removed with QEMU 7.1 |
76 | 'Icelake-Client-noTSX' => 'GenuineIntel', # depreacated, removed with QEMU 7.1 | |
bb84db9d | 77 | 'Icelake-Server' => 'GenuineIntel', |
d0cdb1de | 78 | 'Icelake-Server-noTSX' => 'GenuineIntel', |
d786a274 SR |
79 | |
80 | # AMD CPUs | |
81 | athlon => 'AuthenticAMD', | |
82 | phenom => 'AuthenticAMD', | |
83 | Opteron_G1 => 'AuthenticAMD', | |
84 | Opteron_G2 => 'AuthenticAMD', | |
85 | Opteron_G3 => 'AuthenticAMD', | |
86 | Opteron_G4 => 'AuthenticAMD', | |
87 | Opteron_G5 => 'AuthenticAMD', | |
88 | EPYC => 'AuthenticAMD', | |
89 | 'EPYC-IBPB' => 'AuthenticAMD', | |
8cea210f | 90 | 'EPYC-Rome' => 'AuthenticAMD', |
9b1971c5 | 91 | 'EPYC-Milan' => 'AuthenticAMD', |
d786a274 SR |
92 | |
93 | # generic types, use vendor from host node | |
94 | host => 'default', | |
95 | kvm32 => 'default', | |
96 | kvm64 => 'default', | |
97 | qemu32 => 'default', | |
98 | qemu64 => 'default', | |
99 | max => 'default', | |
100 | }; | |
101 | ||
102 | my @supported_cpu_flags = ( | |
103 | 'pcid', | |
104 | 'spec-ctrl', | |
105 | 'ibpb', | |
106 | 'ssbd', | |
107 | 'virt-ssbd', | |
108 | 'amd-ssbd', | |
109 | 'amd-no-ssb', | |
110 | 'pdpe1gb', | |
111 | 'md-clear', | |
112 | 'hv-tlbflush', | |
113 | 'hv-evmcs', | |
114 | 'aes' | |
115 | ); | |
5d008ad3 SR |
116 | my $cpu_flag_supported_re = qr/([+-])(@{[join('|', @supported_cpu_flags)]})/; |
117 | my $cpu_flag_any_re = qr/([+-])([a-zA-Z0-9\-_\.]+)/; | |
d786a274 | 118 | |
c15b5971 | 119 | our $qemu_cmdline_cpu_re = qr/^((?>[+-]?[\w\-\._=]+,?)+)$/; |
58c64ad5 | 120 | |
5d008ad3 | 121 | my $cpu_fmt = { |
d786a274 | 122 | cputype => { |
b3e89488 | 123 | description => "Emulated CPU type. Can be default or custom name (custom model names must be prefixed with 'custom-').", |
d786a274 | 124 | type => 'string', |
b3e89488 | 125 | format_description => 'string', |
d786a274 SR |
126 | default => 'kvm64', |
127 | default_key => 1, | |
b3e89488 SR |
128 | optional => 1, |
129 | }, | |
130 | 'reported-model' => { | |
131 | description => "CPU model and vendor to report to the guest. Must be a QEMU/KVM supported model." | |
11f9264f | 132 | ." Only valid for custom CPU model definitions, default models will always report themselves to the guest OS.", |
b3e89488 SR |
133 | type => 'string', |
134 | enum => [ sort { lc("$a") cmp lc("$b") } keys %$cpu_vendor_list ], | |
135 | default => 'kvm64', | |
136 | optional => 1, | |
d786a274 SR |
137 | }, |
138 | hidden => { | |
139 | description => "Do not identify as a KVM virtual machine.", | |
140 | type => 'boolean', | |
141 | optional => 1, | |
142 | default => 0 | |
143 | }, | |
144 | 'hv-vendor-id' => { | |
145 | type => 'string', | |
146 | pattern => qr/[a-zA-Z0-9]{1,12}/, | |
147 | format_description => 'vendor-id', | |
148 | description => 'The Hyper-V vendor ID. Some drivers or programs inside Windows guests need a specific ID.', | |
149 | optional => 1, | |
150 | }, | |
151 | flags => { | |
11f9264f TL |
152 | description => "List of additional CPU flags separated by ';'. Use '+FLAG' to enable," |
153 | ." '-FLAG' to disable a flag. Custom CPU models can specify any flag supported by" | |
154 | ." QEMU/KVM, VM-specific flags must be from the following set for security reasons: " | |
155 | . join(', ', @supported_cpu_flags), | |
d786a274 SR |
156 | format_description => '+FLAG[;-FLAG...]', |
157 | type => 'string', | |
5d008ad3 | 158 | pattern => qr/$cpu_flag_any_re(;$cpu_flag_any_re)*/, |
d786a274 SR |
159 | optional => 1, |
160 | }, | |
9f9792d3 SR |
161 | 'phys-bits' => { |
162 | type => 'string', | |
163 | format => 'pve-phys-bits', | |
7b8c4de3 | 164 | format_description => '8-64|host', |
11f9264f TL |
165 | description => "The physical memory address bits that are reported to the guest OS. Should" |
166 | ." be smaller or equal to the host's. Set to 'host' to use value from host CPU, but" | |
167 | ." note that doing so will break live migration to CPUs with other values.", | |
9f9792d3 SR |
168 | optional => 1, |
169 | }, | |
d786a274 SR |
170 | }; |
171 | ||
9f9792d3 SR |
172 | PVE::JSONSchema::register_format('pve-phys-bits', \&parse_phys_bits); |
173 | sub parse_phys_bits { | |
174 | my ($str, $noerr) = @_; | |
175 | ||
176 | my $err_msg = "value must be an integer between 8 and 64 or 'host'\n"; | |
177 | ||
178 | if ($str !~ m/^(host|\d{1,2})$/) { | |
179 | die $err_msg if !$noerr; | |
d1c1af4b | 180 | return; |
9f9792d3 SR |
181 | } |
182 | ||
183 | if ($str =~ m/^\d+$/ && (int($str) < 8 || int($str) > 64)) { | |
184 | die $err_msg if !$noerr; | |
d1c1af4b | 185 | return; |
9f9792d3 SR |
186 | } |
187 | ||
188 | return $str; | |
189 | } | |
190 | ||
5d008ad3 SR |
191 | # $cpu_fmt describes both the CPU config passed as part of a VM config, as well |
192 | # as the definition of a custom CPU model. There are some slight differences | |
7b8c4de3 SR |
193 | # though, which we catch in the custom validation functions below. |
194 | PVE::JSONSchema::register_format('pve-cpu-conf', $cpu_fmt, \&validate_cpu_conf); | |
195 | sub validate_cpu_conf { | |
196 | my ($cpu) = @_; | |
05eae0f2 | 197 | # required, but can't be forced in schema since it's encoded in section header for custom models |
7b8c4de3 | 198 | die "CPU is missing cputype\n" if !$cpu->{cputype}; |
b2e813a6 | 199 | return $cpu; |
5d008ad3 | 200 | } |
7b8c4de3 SR |
201 | PVE::JSONSchema::register_format('pve-vm-cpu-conf', $cpu_fmt, \&validate_vm_cpu_conf); |
202 | sub validate_vm_cpu_conf { | |
203 | my ($cpu) = @_; | |
5d008ad3 | 204 | |
7b8c4de3 | 205 | validate_cpu_conf($cpu); |
5d008ad3 SR |
206 | |
207 | my $cputype = $cpu->{cputype}; | |
208 | ||
209 | # a VM-specific config is only valid if the cputype exists | |
210 | if (is_custom_model($cputype)) { | |
7b8c4de3 SR |
211 | # dies on unknown model |
212 | get_custom_model($cputype); | |
5d008ad3 | 213 | } else { |
7b8c4de3 SR |
214 | die "Built-in cputype '$cputype' is not defined (missing 'custom-' prefix?)\n" |
215 | if !defined($cpu_vendor_list->{$cputype}); | |
5d008ad3 SR |
216 | } |
217 | ||
218 | # in a VM-specific config, certain properties are limited/forbidden | |
219 | ||
7b8c4de3 | 220 | die "VM-specific CPU flags must be a subset of: @{[join(', ', @supported_cpu_flags)]}\n" |
4893f9b9 | 221 | if ($cpu->{flags} && $cpu->{flags} !~ m/^$cpu_flag_supported_re(;$cpu_flag_supported_re)*$/); |
5d008ad3 SR |
222 | |
223 | die "Property 'reported-model' not allowed in VM-specific CPU config.\n" | |
224 | if defined($cpu->{'reported-model'}); | |
225 | ||
226 | return $cpu; | |
227 | } | |
228 | ||
b3e89488 SR |
229 | # Section config settings |
230 | my $defaultData = { | |
231 | # shallow copy, since SectionConfig modifies propertyList internally | |
232 | propertyList => { %$cpu_fmt }, | |
233 | }; | |
234 | ||
235 | sub private { | |
236 | return $defaultData; | |
237 | } | |
238 | ||
239 | sub options { | |
240 | return { %$cpu_fmt }; | |
241 | } | |
242 | ||
243 | sub type { | |
244 | return 'cpu-model'; | |
245 | } | |
246 | ||
247 | sub parse_section_header { | |
248 | my ($class, $line) = @_; | |
249 | ||
250 | my ($type, $sectionId, $errmsg, $config) = | |
251 | $class->SUPER::parse_section_header($line); | |
252 | ||
d1c1af4b | 253 | return if !$type; |
b3e89488 SR |
254 | return ($type, $sectionId, $errmsg, { |
255 | # name is given by section header, and we can always prepend 'custom-' | |
256 | # since we're reading the custom CPU file | |
257 | cputype => "custom-$sectionId", | |
258 | }); | |
259 | } | |
260 | ||
261 | sub write_config { | |
262 | my ($class, $filename, $cfg) = @_; | |
263 | ||
264 | mkdir "/etc/pve/virtual-guest"; | |
265 | ||
266 | for my $model (keys %{$cfg->{ids}}) { | |
267 | my $model_conf = $cfg->{ids}->{$model}; | |
268 | ||
269 | die "internal error: tried saving built-in CPU model (or missing prefix): $model_conf->{cputype}\n" | |
270 | if !is_custom_model($model_conf->{cputype}); | |
271 | ||
272 | die "internal error: tried saving custom cpumodel with cputype (ignoring prefix: $model_conf->{cputype}) not equal to \$cfg->ids entry ($model)\n" | |
273 | if "custom-$model" ne $model_conf->{cputype}; | |
274 | ||
275 | # saved in section header | |
276 | delete $model_conf->{cputype}; | |
277 | } | |
278 | ||
279 | $class->SUPER::write_config($filename, $cfg); | |
280 | } | |
281 | ||
1b7824d3 SR |
282 | sub add_cpu_json_properties { |
283 | my ($prop) = @_; | |
284 | ||
285 | foreach my $opt (keys %$cpu_fmt) { | |
286 | $prop->{$opt} = $cpu_fmt->{$opt}; | |
287 | } | |
288 | ||
289 | return $prop; | |
290 | } | |
291 | ||
a73cc993 SR |
292 | sub get_cpu_models { |
293 | my ($include_custom) = @_; | |
294 | ||
295 | my $models = []; | |
296 | ||
297 | for my $default_model (keys %{$cpu_vendor_list}) { | |
298 | push @$models, { | |
299 | name => $default_model, | |
300 | custom => 0, | |
301 | vendor => $cpu_vendor_list->{$default_model}, | |
302 | }; | |
303 | } | |
304 | ||
305 | return $models if !$include_custom; | |
306 | ||
307 | my $conf = load_custom_model_conf(); | |
308 | for my $custom_model (keys %{$conf->{ids}}) { | |
309 | my $reported_model = $conf->{ids}->{$custom_model}->{'reported-model'}; | |
310 | $reported_model //= $cpu_fmt->{'reported-model'}->{default}; | |
311 | my $vendor = $cpu_vendor_list->{$reported_model}; | |
312 | push @$models, { | |
313 | name => "custom-$custom_model", | |
314 | custom => 1, | |
315 | vendor => $vendor, | |
316 | }; | |
317 | } | |
318 | ||
319 | return $models; | |
320 | } | |
321 | ||
b3e89488 SR |
322 | sub is_custom_model { |
323 | my ($cputype) = @_; | |
324 | return $cputype =~ m/^custom-/; | |
325 | } | |
326 | ||
327 | # Use this to get a single model in the format described by $cpu_fmt. | |
328 | # Allows names with and without custom- prefix. | |
329 | sub get_custom_model { | |
330 | my ($name, $noerr) = @_; | |
331 | ||
332 | $name =~ s/^custom-//; | |
333 | my $conf = load_custom_model_conf(); | |
334 | ||
335 | my $entry = $conf->{ids}->{$name}; | |
336 | if (!defined($entry)) { | |
337 | die "Custom cputype '$name' not found\n" if !$noerr; | |
d1c1af4b | 338 | return; |
b3e89488 SR |
339 | } |
340 | ||
341 | my $model = {}; | |
342 | for my $property (keys %$cpu_fmt) { | |
343 | if (my $value = $entry->{$property}) { | |
344 | $model->{$property} = $value; | |
345 | } | |
346 | } | |
347 | ||
348 | return $model; | |
349 | } | |
350 | ||
d786a274 SR |
351 | # Print a QEMU device node for a given VM configuration for hotplugging CPUs |
352 | sub print_cpu_device { | |
353 | my ($conf, $id) = @_; | |
354 | ||
355 | my $kvm = $conf->{kvm} // 1; | |
356 | my $cpu = $kvm ? "kvm64" : "qemu64"; | |
357 | if (my $cputype = $conf->{cpu}) { | |
7b8c4de3 | 358 | my $cpuconf = PVE::JSONSchema::parse_property_string('pve-vm-cpu-conf', $cputype) |
d786a274 SR |
359 | or die "Cannot parse cpu description: $cputype\n"; |
360 | $cpu = $cpuconf->{cputype}; | |
b3e89488 SR |
361 | |
362 | if (is_custom_model($cpu)) { | |
363 | my $custom_cpu = get_custom_model($cpu); | |
364 | ||
b0ab3463 | 365 | $cpu = $custom_cpu->{'reported-model'} // $cpu_fmt->{'reported-model'}->{default}; |
adc67fe9 TL |
366 | } |
367 | if (my $replacement_type = $depreacated_cpu_map->{$cpu}) { | |
0d6962f9 | 368 | $cpu = $replacement_type; |
b3e89488 | 369 | } |
d786a274 SR |
370 | } |
371 | ||
372 | my $cores = $conf->{cores} || 1; | |
373 | ||
374 | my $current_core = ($id - 1) % $cores; | |
375 | my $current_socket = int(($id - 1 - $current_core)/$cores); | |
376 | ||
b0ab3463 | 377 | # FIXME: hot plugging other architectures like our unofficial arch64 support? |
d786a274 SR |
378 | return "$cpu-x86_64-cpu,id=cpu$id,socket-id=$current_socket,core-id=$current_core,thread-id=0"; |
379 | } | |
380 | ||
45619185 SR |
381 | # Resolves multiple arrays of hashes representing CPU flags with metadata to a |
382 | # single string in QEMU "-cpu" compatible format. Later arrays have higher | |
383 | # priority. | |
384 | # | |
385 | # Hashes take the following format: | |
386 | # { | |
387 | # aes => { | |
388 | # op => "+", # defaults to "" if undefined | |
389 | # reason => "to support AES acceleration", # for override warnings | |
390 | # value => "" # needed for kvm=off (value: off) etc... | |
391 | # }, | |
392 | # ... | |
393 | # } | |
394 | sub resolve_cpu_flags { | |
395 | my $flags = {}; | |
396 | ||
397 | for my $hash (@_) { | |
398 | for my $flag_name (keys %$hash) { | |
399 | my $flag = $hash->{$flag_name}; | |
400 | my $old_flag = $flags->{$flag_name}; | |
401 | ||
402 | $flag->{op} //= ""; | |
403 | $flag->{reason} //= "unknown origin"; | |
404 | ||
405 | if ($old_flag) { | |
406 | my $value_changed = (defined($flag->{value}) != defined($old_flag->{value})) || | |
407 | (defined($flag->{value}) && $flag->{value} ne $old_flag->{value}); | |
408 | ||
409 | if ($old_flag->{op} eq $flag->{op} && !$value_changed) { | |
410 | $flags->{$flag_name}->{reason} .= " & $flag->{reason}"; | |
411 | next; | |
412 | } | |
413 | ||
414 | my $old = print_cpuflag_hash($flag_name, $flags->{$flag_name}); | |
415 | my $new = print_cpuflag_hash($flag_name, $flag); | |
416 | warn "warning: CPU flag/setting $new overwrites $old\n"; | |
417 | } | |
418 | ||
419 | $flags->{$flag_name} = $flag; | |
420 | } | |
421 | } | |
422 | ||
423 | my $flag_str = ''; | |
424 | # sort for command line stability | |
425 | for my $flag_name (sort keys %$flags) { | |
426 | $flag_str .= ','; | |
427 | $flag_str .= $flags->{$flag_name}->{op}; | |
428 | $flag_str .= $flag_name; | |
429 | $flag_str .= "=$flags->{$flag_name}->{value}" | |
430 | if $flags->{$flag_name}->{value}; | |
431 | } | |
432 | ||
433 | return $flag_str; | |
434 | } | |
435 | ||
436 | sub print_cpuflag_hash { | |
437 | my ($flag_name, $flag) = @_; | |
438 | my $formatted = "'$flag->{op}$flag_name"; | |
439 | $formatted .= "=$flag->{value}" if defined($flag->{value}); | |
440 | $formatted .= "'"; | |
441 | $formatted .= " ($flag->{reason})" if defined($flag->{reason}); | |
442 | return $formatted; | |
443 | } | |
444 | ||
c4581b9c SR |
445 | sub parse_cpuflag_list { |
446 | my ($re, $reason, $flaglist) = @_; | |
447 | ||
448 | my $res = {}; | |
449 | return $res if !$flaglist; | |
450 | ||
451 | foreach my $flag (split(";", $flaglist)) { | |
4893f9b9 | 452 | if ($flag =~ m/^$re$/) { |
c4581b9c SR |
453 | $res->{$2} = { op => $1, reason => $reason }; |
454 | } | |
455 | } | |
456 | ||
457 | return $res; | |
458 | } | |
459 | ||
d786a274 SR |
460 | # Calculate QEMU's '-cpu' argument from a given VM configuration |
461 | sub get_cpu_options { | |
462 | my ($conf, $arch, $kvm, $kvm_off, $machine_version, $winversion, $gpu_passthrough) = @_; | |
463 | ||
c4581b9c | 464 | my $cputype = $kvm ? "kvm64" : "qemu64"; |
d786a274 | 465 | if ($arch eq 'aarch64') { |
c4581b9c | 466 | $cputype = 'cortex-a57'; |
d786a274 SR |
467 | } |
468 | ||
c4581b9c SR |
469 | my $cpu = {}; |
470 | my $custom_cpu; | |
471 | my $hv_vendor_id; | |
472 | if (my $cpu_prop_str = $conf->{cpu}) { | |
7b8c4de3 | 473 | $cpu = PVE::JSONSchema::parse_property_string('pve-vm-cpu-conf', $cpu_prop_str) |
c4581b9c | 474 | or die "Cannot parse cpu description: $cpu_prop_str\n"; |
d786a274 | 475 | |
c4581b9c | 476 | $cputype = $cpu->{cputype}; |
d786a274 | 477 | |
c4581b9c SR |
478 | if (is_custom_model($cputype)) { |
479 | $custom_cpu = get_custom_model($cputype); | |
d786a274 | 480 | |
b0ab3463 TL |
481 | $cputype = $custom_cpu->{'reported-model'} // $cpu_fmt->{'reported-model'}->{default}; |
482 | $kvm_off = $custom_cpu->{hidden} if defined($custom_cpu->{hidden}); | |
c4581b9c SR |
483 | $hv_vendor_id = $custom_cpu->{'hv-vendor-id'}; |
484 | } | |
d786a274 | 485 | |
0d6962f9 TL |
486 | if (my $replacement_type = $depreacated_cpu_map->{$cputype}) { |
487 | $cputype = $replacement_type; | |
488 | } | |
489 | ||
c4581b9c | 490 | # VM-specific settings override custom CPU config |
b0ab3463 TL |
491 | $kvm_off = $cpu->{hidden} if defined($cpu->{hidden}); |
492 | $hv_vendor_id = $cpu->{'hv-vendor-id'} if defined($cpu->{'hv-vendor-id'}); | |
c4581b9c | 493 | } |
d786a274 | 494 | |
f7d1505b TL |
495 | my $pve_flags = get_pve_cpu_flags($conf, $kvm, $cputype, $arch, $machine_version); |
496 | ||
497 | my $hv_flags = $kvm | |
498 | ? get_hyperv_enlightenments( | |
499 | $winversion, | |
500 | $machine_version, | |
501 | $conf->{bios}, | |
502 | $gpu_passthrough, | |
503 | $hv_vendor_id, | |
504 | ) | |
505 | : undef; | |
c4581b9c | 506 | |
11f9264f TL |
507 | my $custom_cputype_flags = parse_cpuflag_list( |
508 | $cpu_flag_any_re, "set by custom CPU model", $custom_cpu->{flags}); | |
c4581b9c | 509 | |
11f9264f TL |
510 | my $vm_flags = parse_cpuflag_list( |
511 | $cpu_flag_supported_re, "manually set for VM", $cpu->{flags}); | |
c4581b9c SR |
512 | |
513 | my $pve_forced_flags = {}; | |
514 | $pve_forced_flags->{'enforce'} = { | |
515 | reason => "error if requested CPU settings not available", | |
516 | } if $cputype ne 'host' && $kvm && $arch eq 'x86_64'; | |
517 | $pve_forced_flags->{'kvm'} = { | |
518 | value => "off", | |
519 | reason => "hide KVM virtualization from guest", | |
520 | } if $kvm_off; | |
521 | ||
522 | # $cputype is the "reported-model" for custom types, so we can just look up | |
523 | # the vendor in the default list | |
524 | my $cpu_vendor = $cpu_vendor_list->{$cputype}; | |
525 | if ($cpu_vendor) { | |
526 | $pve_forced_flags->{'vendor'} = { | |
527 | value => $cpu_vendor, | |
528 | } if $cpu_vendor ne 'default'; | |
529 | } elsif ($arch ne 'aarch64') { | |
530 | die "internal error"; # should not happen | |
d786a274 SR |
531 | } |
532 | ||
c4581b9c | 533 | my $cpu_str = $cputype; |
d786a274 | 534 | |
c4581b9c | 535 | # will be resolved in parameter order |
11f9264f TL |
536 | $cpu_str .= resolve_cpu_flags( |
537 | $pve_flags, $hv_flags, $custom_cputype_flags, $vm_flags, $pve_forced_flags); | |
d786a274 | 538 | |
9f9792d3 SR |
539 | my $phys_bits = ''; |
540 | foreach my $conf ($custom_cpu, $cpu) { | |
541 | next if !defined($conf); | |
542 | my $conf_val = $conf->{'phys-bits'}; | |
543 | next if !$conf_val; | |
544 | if ($conf_val eq 'host') { | |
545 | $phys_bits = ",host-phys-bits=true"; | |
546 | } else { | |
547 | $phys_bits = ",phys-bits=$conf_val"; | |
548 | } | |
549 | } | |
550 | $cpu_str .= $phys_bits; | |
551 | ||
c4581b9c SR |
552 | return ('-cpu', $cpu_str); |
553 | } | |
d786a274 | 554 | |
c4581b9c SR |
555 | # Some hardcoded flags required by certain configurations |
556 | sub get_pve_cpu_flags { | |
557 | my ($conf, $kvm, $cputype, $arch, $machine_version) = @_; | |
558 | ||
559 | my $pve_flags = {}; | |
560 | my $pve_msg = "set by PVE;"; | |
561 | ||
562 | $pve_flags->{'lahf_lm'} = { | |
563 | op => '+', | |
564 | reason => "$pve_msg to support Windows 8.1+", | |
565 | } if $cputype eq 'kvm64' && $arch eq 'x86_64'; | |
566 | ||
567 | $pve_flags->{'x2apic'} = { | |
568 | op => '-', | |
569 | reason => "$pve_msg incompatible with Solaris", | |
570 | } if $conf->{ostype} && $conf->{ostype} eq 'solaris'; | |
571 | ||
572 | $pve_flags->{'sep'} = { | |
573 | op => '+', | |
574 | reason => "$pve_msg to support Windows 8+ and improve Windows XP+", | |
575 | } if $cputype eq 'kvm64' || $cputype eq 'kvm32'; | |
576 | ||
577 | $pve_flags->{'rdtscp'} = { | |
578 | op => '-', | |
579 | reason => "$pve_msg broken on AMD Opteron", | |
580 | } if $cputype =~ m/^Opteron/; | |
581 | ||
582 | if (min_version($machine_version, 2, 3) && $kvm && $arch eq 'x86_64') { | |
583 | $pve_flags->{'kvm_pv_unhalt'} = { | |
584 | op => '+', | |
585 | reason => "$pve_msg to improve Linux guest spinlock performance", | |
586 | }; | |
587 | $pve_flags->{'kvm_pv_eoi'} = { | |
588 | op => '+', | |
589 | reason => "$pve_msg to improve Linux guest interrupt performance", | |
590 | }; | |
d786a274 SR |
591 | } |
592 | ||
c4581b9c | 593 | return $pve_flags; |
d786a274 SR |
594 | } |
595 | ||
c4581b9c SR |
596 | sub get_hyperv_enlightenments { |
597 | my ($winversion, $machine_version, $bios, $gpu_passthrough, $hv_vendor_id) = @_; | |
d786a274 SR |
598 | |
599 | return if $winversion < 6; | |
600 | return if $bios && $bios eq 'ovmf' && $winversion < 8; | |
601 | ||
c4581b9c SR |
602 | my $flags = {}; |
603 | my $default_reason = "automatic Hyper-V enlightenment for Windows"; | |
604 | my $flagfn = sub { | |
605 | my ($flag, $value, $reason) = @_; | |
606 | $flags->{$flag} = { | |
607 | reason => $reason // $default_reason, | |
608 | value => $value, | |
609 | } | |
610 | }; | |
611 | ||
612 | my $hv_vendor_set = defined($hv_vendor_id); | |
613 | if ($gpu_passthrough || $hv_vendor_set) { | |
d786a274 | 614 | $hv_vendor_id //= 'proxmox'; |
c4581b9c SR |
615 | $flagfn->('hv_vendor_id', $hv_vendor_id, $hv_vendor_set ? |
616 | "custom hv_vendor_id set" : "NVIDIA workaround for GPU passthrough"); | |
d786a274 SR |
617 | } |
618 | ||
619 | if (min_version($machine_version, 2, 3)) { | |
c4581b9c SR |
620 | $flagfn->('hv_spinlocks', '0x1fff'); |
621 | $flagfn->('hv_vapic'); | |
622 | $flagfn->('hv_time'); | |
d786a274 | 623 | } else { |
c4581b9c | 624 | $flagfn->('hv_spinlocks', '0xffff'); |
d786a274 SR |
625 | } |
626 | ||
627 | if (min_version($machine_version, 2, 6)) { | |
c4581b9c SR |
628 | $flagfn->('hv_reset'); |
629 | $flagfn->('hv_vpindex'); | |
630 | $flagfn->('hv_runtime'); | |
d786a274 SR |
631 | } |
632 | ||
633 | if ($winversion >= 7) { | |
c4581b9c SR |
634 | my $win7_reason = $default_reason . " 7 and higher"; |
635 | $flagfn->('hv_relaxed', undef, $win7_reason); | |
d786a274 SR |
636 | |
637 | if (min_version($machine_version, 2, 12)) { | |
c4581b9c SR |
638 | $flagfn->('hv_synic', undef, $win7_reason); |
639 | $flagfn->('hv_stimer', undef, $win7_reason); | |
d786a274 SR |
640 | } |
641 | ||
642 | if (min_version($machine_version, 3, 1)) { | |
c4581b9c | 643 | $flagfn->('hv_ipi', undef, $win7_reason); |
d786a274 SR |
644 | } |
645 | } | |
c4581b9c SR |
646 | |
647 | return $flags; | |
d786a274 SR |
648 | } |
649 | ||
58c64ad5 SR |
650 | sub get_cpu_from_running_vm { |
651 | my ($pid) = @_; | |
652 | ||
653 | my $cmdline = PVE::QemuServer::Helpers::parse_cmdline($pid); | |
654 | die "could not read commandline of running machine\n" | |
655 | if !$cmdline->{cpu}->{value}; | |
656 | ||
657 | # sanitize and untaint value | |
658 | $cmdline->{cpu}->{value} =~ $qemu_cmdline_cpu_re; | |
659 | return $1; | |
660 | } | |
661 | ||
b3e89488 SR |
662 | __PACKAGE__->register(); |
663 | __PACKAGE__->init(); | |
664 | ||
d786a274 | 665 | 1; |