How can I further test this patch? (It boots...)
It should be harmless; at worst it will add about 1K to an
SMP or IOAPIC kernel.
If it works it should reduce interrupt latency.
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@ -382,29 +382,31 @
ENTRY(interrupt)
.text
-vector=0
+ .align 16,0x90
ENTRY(irq_entries_start)
+vector=0
.rept NR_IRQS
- ALIGN
1: pushl $vector-256
jmp common_interrupt
+ .align 16,0x90
.data
.long 1b
.text
vector=vector+1
.endr
- ALIGN
+/* aligned 16 */
common_interrupt:
SAVE_ALL
call do_IRQ
jmp ret_from_intr
#define BUILD_INTERRUPT(name, nr) \
+ .align 16,0x90; \
ENTRY(name) \
pushl $nr-256; \
SAVE_ALL \
- call smp_/**/name; \
+ call smp_/**/name; \
jmp ret_from_intr;
/* The include is where all of the SMP etc. interrupts come from */
------
Chuck
-
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:27 EST