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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-04-09 10:52:26 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-10 14:35:57 +0200 |
| commit | 778838600eb6973bdb6fd11e7f91b43cea4d6f45 (patch) | |
| tree | 82bd6b1b97fc5e95a49c8a96b04639b50b29226b /arch/x86/kernel/irqinit_32.c | |
| parent | x86: unify native_init_IRQ() in irqinit_{32,64}.c (diff) | |
| download | linux-778838600eb6973bdb6fd11e7f91b43cea4d6f45.tar.xz linux-778838600eb6973bdb6fd11e7f91b43cea4d6f45.zip | |
x86: unify trivial differences in irqinit_{32,64}.c
Impact: cleanup
Reviewed-by Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irqinit_32.c')
| -rw-r--r-- | arch/x86/kernel/irqinit_32.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c index a780de3ad5da..72ce94268d31 100644 --- a/arch/x86/kernel/irqinit_32.c +++ b/arch/x86/kernel/irqinit_32.c @@ -1,20 +1,24 @@ +#include <linux/linkage.h> #include <linux/errno.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/ioport.h> #include <linux/interrupt.h> +#include <linux/timex.h> #include <linux/slab.h> #include <linux/random.h> #include <linux/init.h> #include <linux/kernel_stat.h> #include <linux/sysdev.h> #include <linux/bitops.h> +#include <linux/acpi.h> #include <linux/io.h> #include <linux/delay.h> #include <asm/atomic.h> #include <asm/system.h> #include <asm/timer.h> +#include <asm/hw_irq.h> #include <asm/pgtable.h> #include <asm/desc.h> #include <asm/apic.h> @@ -22,6 +26,22 @@ #include <asm/i8259.h> #include <asm/traps.h> +/* + * ISA PIC or low IO-APIC triggered (INTA-cycle or APIC) interrupts: + * (these are usually mapped to vectors 0x30-0x3f) + */ + +/* + * The IO-APIC gives us many more interrupt sources. Most of these + * are unused but an SMP system is supposed to have enough memory ... + * sometimes (mostly wrt. hw bugs) we get corrupted vectors all + * across the spectrum, so we really want to be prepared to get all + * of these. Plus, more powerful systems might have more than 64 + * IO-APIC registers. + * + * (these are usually mapped into the 0x30-0xff vector range) + */ + #ifdef CONFIG_X86_32 /* * Note that on a 486, we don't want to do a SIGFPE on an irq13 |