Hello Stefan,
on a Zen system :
# dmidecode -t processor | head
# dmidecode 3.5
Getting SMBIOS data from sysfs.
SMBIOS 3.2.0 present.
Handle 0x0024, DMI type 4, 48 bytes
Processor Information
Socket Designation: CPU
Type: Central Processor
Family: Zen
Manufacturer: Advanced Micro Devices, Inc.
When booted on 6.8.0-36
$ cat /proc/cpuinfo > cpuinfo.$(uname -r)
$ grep xsaves cpuinfo.6.8.0-36-generic
Then when booted to 6.8.0-48 :
$ cat /proc/cpuinfo > cpuinfo.$(uname -r)
$ grep xsaves cpuinfo.6.8.0-48-generic
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf
rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave
avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse
3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext
perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall
fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni
xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total
cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin arat npt lbrv
svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter
pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov
succor smca sev sev_es
So as expected, the -48 kernel does add the XSAVES cpu capability
** Tags removed: verification-needed-noble-linux
** Tags added: verification-done-noble-linux
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https://bugs.launchpad.net/bugs/2077321
Title:
Please backport the more restrictive XSAVES deactivation for Zen1/2
arch
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