Messages in this thread | | | Date | Sun, 7 Jan 2024 20:47:16 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/Kconfig: Transmeta Crusoe is cpu family 5, not 6 |
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On Sun, Jan 07, 2024 at 02:16:57PM +0100, Aleksander Mazur wrote: > I found out I am no longer able to boot kernel compiled with CONFIG_MCRUSOE=y on > my HP t5300 with CPU: Transmeta(tm) Crusoe(tm) Processor TM5500 (family: 0x5, > model: 0x4, stepping: 0x3). It says: > > > This kernel requires an i686 CPU, but only detected an i586 CPU. > > Unable to boot - please use a kernel appropriate for your CPU. > > It looks like this is caused by 25d76ac888216c369dea91768764728b83769799 which > started setting X86_MINIMUM_CPU_FAMILY=6 for MCRUSOE while CPUID gives family=5. > > I was able to fix the problem with a patch included below. It just changes > X86_MINIMUM_CPU_FAMILY to 5
... for MCRUSOE.
> No other change was necessary (using -march=i686 > seems fine). > > /proc/cpuinfo: > processor : 0 > vendor_id : GenuineTMx86 > cpu family : 5 > model : 4 > model name : Transmeta(tm) Crusoe(tm) Processor TM5500 > stepping : 3 > cpu MHz : 532.091 > cache size : 256 KB > fdiv_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme de pse tsc msr cx8 sep cmov mmx longrun lrti constant_tsc cpuid > bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit mmio_unknown > bogomips : 1064.18 > clflush size : 32 > cache_alignment : 32 > address sizes : 32 bits physical, 32 bits virtual > power management: > > --- a/arch/x86/Kconfig.cpu > +++ b/arch/x86/Kconfig.cpu > @@ -375,7 +375,7 @@ > config X86_MINIMUM_CPU_FAMILY > int > default "64" if X86_64 > - default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCRUSOE || MCORE2 || MK7 || MK8) > + default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCORE2 || MK7 || MK8) > default "5" if X86_32 && X86_CMPXCHG64 > default "4"
Care to turn this into a proper patch with your SOB etc?
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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