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[PATCH] IA64: kprobe invalidate icache of jump buffer

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Kprobe inserts breakpoint instruction in probepoint and then jumps to
instruction slot when breakpoint is hit, the instruction slot icache must
be consistent with dcache.  Here is the patch which invalidates instruction
slot icache area.

Without this patch, in some machines there will be fault when executing
instruction slot where icache content is inconsistent with dcache.

Signed-off-by: bibo,mao <bibo.mao@intel.com>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Keshavamurthy Anil S <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
bibo, mao
2006-07-30 03:03:26 -07:00
committed by Linus Torvalds
parent 25c8716cb0
commit a9ad965ea9
7 changed files with 15 additions and 0 deletions
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1
include/asm-ia64/kprobes.h
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@@ -125,5 +125,6 @@ static inline void jprobe_return(void)
}
extern void invalidate_stacked_regs(void);
extern void flush_register_stack(void);
extern void flush_insn_slot(struct kprobe *p);
#endif /* _ASM_KPROBES_H */