On Monday, 01 December 2025 at 18:54, Dave Hansen wrote: > On 11/27/25 04:37, Dominik 'Rathann' Mierzejewski wrote: > >> Could you boot the system on a known good kernel and run this, please? > >> > >> rdmsr -a 0x000001a0 > >> > >> That'll dump out MSR_IA32_MISC_ENABLE on all the CPUs. > > # rdmsr -a 0x000001a0 > > 60840488 > > 60840488 > > 60840488 > > 60840489 > > I don't think there's any other way to read this than: the BIOS is buggy > and mis-programmed this MSR on one of the CPUs. We can shut the warning > up, of course. But it _is_ a quite valid warning.
I appreciate the explanation. Buggy BIOSes are a sad fact of life. Can I fix that with the following? wrmsr -p 3 0x000001a0 60840488 Would that change anything? > I'm just not sure how much code we want to add to the kernel to silence > a warning on 15-year-old CPUs with buggy BIOSes. Probably not worth any effort, then. > Are there any ill effects other than the warning splat? Kernel becomes tainted, which may lead to bug reports of other valid issues get rejected. I guess that's my main concern. Regards, Dominik -- Fedora https://fedoraproject.org Deep in the human unconscious is a pervasive need for a logical universe that makes sense. But the real universe is always one step beyond logic. -- from "The Sayings of Muad'Dib" by the Princess Irulan
