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ARM: 6256/1: Check arch version and modify fsr_info[] depends on it at runtime

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Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Kirill A. Shutemov 2010-07-22 13:23:25 +01:00 committed by Russell King
parent 33a9c41bf5
commit 993bf4ec8c
1 changed files with 11 additions and 5 deletions
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16
arch/arm/mm/fault.c
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@ -475,12 +475,7 @@ static struct fsr_info {
{ do_bad, SIGBUS, BUS_ADRALN, "alignment exception" },
{ do_bad, SIGKILL, 0, "terminal exception" },
{ do_bad, SIGBUS, BUS_ADRALN, "alignment exception" },
/* Do we need runtime check ? */
#if __LINUX_ARM_ARCH__ < 6
{ do_bad, SIGBUS, 0, "external abort on linefetch" },
#else
{ do_translation_fault, SIGSEGV, SEGV_MAPERR, "I-cache maintenance fault" },
#endif
{ do_translation_fault, SIGSEGV, SEGV_MAPERR, "section translation fault" },
{ do_bad, SIGBUS, 0, "external abort on linefetch" },
{ do_page_fault, SIGSEGV, SEGV_MAPERR, "page translation fault" },
@ -605,3 +600,14 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
arm_notify_die("", regs, &info, ifsr, 0);
}
static int __init exceptions_init(void)
{
if (cpu_architecture() >= CPU_ARCH_ARMv6) {
hook_fault_code(4, do_translation_fault, SIGSEGV, SEGV_MAPERR,
"I-cache maintenance fault");
}
return 0;
}
arch_initcall(exceptions_init);