Messages in this thread | | | Date | Thu, 11 Sep 2003 14:10:43 +0200 (MET DST) | From | "Maciej W. Rozycki" <> | Subject | Re: RFC: [2.6 patch] better i386 CPU selection |
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On Thu, 11 Sep 2003, Adrian Bunk wrote:
> - X86_GOOD_APIC: Are there really that many processors with a bad APIC?
Only early revisions of the P54C (75-200MHz) Pentium processors are affected: steppings B1, B3, B5, C2 and cB1 (or 1, 2, 4, 5 and 11) as reported by cpuid). MMX Pentia and later chips are OK as well as any systems using external i82489DX APICs (so far i486, P5 (60/66MHz) Pentium and P54C Pentium systems with i82489DX APICs has been found, AFAIK). Once I proposed the option to be user-selectable as an advanced CPU option (<asm/bugs.h> does appropriate validation), but the proposal was rejected as incomprehesible to an average user doing a kernel build.
-- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
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