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SubjectRe: 2.6.0-test3-mm1: scheduling while atomic (ext3?)
On Wed, Aug 13, 2003 at 07:34:36PM +0100, Alan Cox wrote:
> pre VIA Cyrixen have MMX and CXMMX. The CPU also set bit 31 but doesn't
> have 3dnow (which fooled me but the kernel does know about). C3's seem
> to have prefetch/prefetchw (but not prefetchnta). I don't have a nemeiah
> but I assume Nemeiah has prefetchnta too ?

With Nehemiah, they dropped 3dnow, and went with SSE.

> MMX: Pentium (later only), Cyrix MediaGX (later only), Cyrix 6x86/MII
> Intel PII/PIII/PIV, AMD K6/Athlon/Opteron, VIA Cyrix III, VIA C3
> CXMMX: Extended MMX - Cyrix MII/AMD K6(II+ ?)/K7/Opteron
> 3DNOW: AMD K6-II/III(not original K6),K7/,Opteron, VIA Cyrix III,
> VIA C3 (pre Nemiah only ??)

+ Winchip-2A (though as mentioned, prefetch is a nop, the rest of 3dnow worked
though iirc).

> "Enhanced" 3DNow: Athlon Tbird
> SSE: Intel PII, PIII, Athlon (XP, Duron >=1Gz only)
> SSE2: Pentium IV


Dave Jones
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