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ARM: LPAE: Add fault handling support

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The DFSR and IFSR register format is different when LPAE is enabled. In
addition, DFSR and IFSR have similar definitions for the fault type.
This modifies the fault code to correctly handle the new format.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas
2011-11-22 17:30:31 +00:00
parent c9f27f1026
commit f7b8156d15
6 changed files with 104 additions and 5 deletions
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8
arch/arm/kernel/hw_breakpoint.c
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@@ -1016,10 +1016,10 @@ static int __init arch_hw_breakpoint_init(void)
}
/* Register debug fault handler. */
hook_fault_code(2, hw_breakpoint_pending, SIGTRAP, TRAP_HWBKPT,
"watchpoint debug exception");
hook_ifault_code(2, hw_breakpoint_pending, SIGTRAP, TRAP_HWBKPT,
"breakpoint debug exception");
hook_fault_code(FAULT_CODE_DEBUG, hw_breakpoint_pending, SIGTRAP,
TRAP_HWBKPT, "watchpoint debug exception");
hook_ifault_code(FAULT_CODE_DEBUG, hw_breakpoint_pending, SIGTRAP,
TRAP_HWBKPT, "breakpoint debug exception");
/* Register hotplug notifier. */
register_cpu_notifier(&dbg_reset_nb);