[gnutls-devel] GnuTLS | x86(_64): CPU feature detection broken (#1282)

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Mon Jun 20 22:40:20 CEST 2022




Gregor Jasny commented:


I don't think those are related. This is the `/proc/cpuinfo` from my VM:
```
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 85
model name	: Intel(R) Xeon(R) Gold 5120 CPU @ 2.20GHz
stepping	: 4
microcode	: 0xffffffff
cpu MHz		: 2194.841
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 1
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl cpuid pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 movbe popcnt aes f16c rdrand hypervisor lahf_lm abm 3dnowprefetch pti
bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
bogomips	: 4389.68
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:
```
As you can see the `xsave` and `avx` are absent (also `avx2` which was set in the bug you quoted).

Unfortunately I have a hard time to get gnutls compiled on that machine.

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