http://www.redhat.com/~mingo/smp-2.3.18-F8
(patch is 160k, applies cleanly against all vanilla and ac- 2.3.18
kernels)
The main, externally visible feature of the patchset is the default-on
NMI-watchdog.
Changes in smp-2.3.18-F8:
- continuing quest to make 82489DX based (and other older)
systems work, typo fixes and comment updates.
(Maciej W. Rozycki)
- 'local APIC timer interrupt interleaving', this is both a
fix for a potential bug, and preparation for next generation
per-CPU timer handling.
(me)
- tons of further cleanups, separated smp.c into smpboot.c and
smp.c, cleaned up both.
(me)
- potential double-write bug fixed - this might fix the booting
problem on those old ALR dual- and quad-Pentium boards? (if
anyone got one)
(me)
- other smaller fixes i forgot about
Changes in smp-2.3.18-B1:
- unconditional NMI oopser. It turned out that we can do this on
99% (maybe 100%) of x86 SMP boxes without impacting timer IRQ
performance. See Documentation/nmi_watchdog.txt.
(me)
- old external IOAPICs and 486-based SMP boxes should work now
(Maciej W. Rozycki)
- unused variable space cleanups, initialize_secondary() cleanup
(Manfred Spraul)
- moved all IO-APIC and IPI APIC messages to logical destination
mode, fixed LDR initialization bug, cleaned up irq-vector space.
(me)
- 'timer-sync' feature, all CPUs synchronize their time stamp
counters, errors get reported and fixed. This fixes certain
dual-PIII boards.
(me)
- the 'set the destination CPU mask to 0' IOAPIC-edge trick is
actually not valid and triggers APIC bugs. Exchanged it for an
equivalent but safe method.
(me)
- 8259A init moved out of setup.S
(Maciej W. Rozycki)
- spurious 8259A interrupts get reported properly, APIC error
vector exported and logged properly
(me)
- a 'noapic' bug fixed - fixes instability in noapic mode.
(me)
- we can inline ack_APIC() on P6 boxes: smaller and faster IRQ
code.
(me)
- other stuff.
reports, comments, suggestions welcome.
-- mingo
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