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[PATCH] x86: fix the irqbalance quirk for E7320/E7520/E7525

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Move the irqbalance quirks for E7320/E7520/E7525(Errata 23 in
http://download.intel.com/design/chipsets/specupdt/30304203.pdf) to early
quirks.

And add a PCI quirk for these platforms to check(which happens very late
during the boot) if the APIC routing is indeed set to default flat mode.

This fixes the breakage(in x86_64) of this quirk due to cpu hotplug which
selects physical mode instead of the logical flat(as needed for this errata
workaround).

Signed-off-by: Suresh Siddha <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: "Li, Shaohua" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
This commit is contained in:
Siddha, Suresh B 2006-12-07 02:14:10 +01:00 • committed by Andi Kleen
commit b0d0a4ba45
8 changed files with 88 additions and 12 deletions
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2
include/asm-i386/genapic.h
View file

@ -122,6 +122,6 @@ struct genapic {
APICFUNC(phys_pkg_id) \
}
extern struct genapic *genapic;
extern struct genapic *genapic, apic_default;
#endif

2
include/asm-i386/irq.h
View file

@ -37,6 +37,8 @@ static __inline__ int irq_canonicalize(int irq)
extern int irqbalance_disable(char *str);
#endif
extern void quirk_intel_irqbalance(void);
#ifdef CONFIG_HOTPLUG_CPU
extern void fixup_irqs(cpumask_t map);
#endif