AcoSail/kernel_optimize_test
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[POWERPC] Better check in show_instructions

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Instead of just checking that an address is in the right range, use the
provided __kernel_text_address() helper which covers both the kernel and
module text sections.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Anton Blanchard 2006-10-13 12:17:16 +10:00 committed by Paul Mackerras
parent 99f4861025
commit 00ae36de49
1 changed files with 2 additions and 8 deletions
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10
arch/powerpc/kernel/process.c
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@ -341,13 +341,6 @@ struct task_struct *__switch_to(struct task_struct *prev,
static int instructions_to_print = 16; static int instructions_to_print = 16;
#ifdef CONFIG_PPC64
#define BAD_PC(pc) ((REGION_ID(pc) != KERNEL_REGION_ID) && \
(REGION_ID(pc) != VMALLOC_REGION_ID))
#else
#define BAD_PC(pc) ((pc) < KERNELBASE)
#endif
static void show_instructions(struct pt_regs *regs) static void show_instructions(struct pt_regs *regs)
{ {
int i; int i;
@ -366,7 +359,8 @@ static void show_instructions(struct pt_regs *regs)
* bad address because the pc *should* only be a * bad address because the pc *should* only be a
* kernel address. * kernel address.
*/ */
if (BAD_PC(pc) || __get_user(instr, (unsigned int __user *)pc)) { if (!__kernel_text_address(pc) ||
__get_user(instr, (unsigned int __user *)pc)) {
printk("XXXXXXXX "); printk("XXXXXXXX ");
} else { } else {
if (regs->nip == pc) if (regs->nip == pc)