Odpověď na názor

Az na to, ze nelze overit zda si to vycucal pro tve uspokojeni, nebo k tomu ma i referenci na zdroj.

https://www.phoronix.com/news/RDSEED-Disable-All-Zen-5
https://lore.kernel.org/lkml/20251018024010.4112396-1-gourry@gourry.net/

obsahuje prave jen mazani CPUID flagu pres backdoor skrze MSR:

 static void init_amd_zen5(struct cpuinfo_x86 *c)
 {
+   /* Disable RDSEED on AMD Turin because of an error. */
+   clear_cpu_cap(c, X86_FEATURE_RDSEED);
+   msr_clear_bit(MSR_AMD64_CPUID_FN_7, 18);
+   pr_emerg("RDSEED is not reliable on this platform; disabling.\n");
 }