From 221ac329e93fe2a676346af2e98e311251648f69 Mon Sep 17 00:00:00 2001 From: Ionut Nicu Date: Thu, 6 Mar 2008 03:12:54 +1100 Subject: [PATCH] [POWERPC] Fix kernel panic in arch_arm_kprobe The code in arch_arm_kprobe was trying to set a breakpoint which resulted in a page fault because the kernel text pages were write protected. Disable the write protect when CONFIG_KPROBES is defined. Signed-off-by: Ionut Nicu Signed-off-by: Paul Mackerras --- include/asm-powerpc/pgtable-ppc32.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/asm-powerpc/pgtable-ppc32.h b/include/asm-powerpc/pgtable-ppc32.h index 2c79f550272b..bd5b4011c53b 100644 --- a/include/asm-powerpc/pgtable-ppc32.h +++ b/include/asm-powerpc/pgtable-ppc32.h @@ -420,7 +420,8 @@ extern int icache_44x_need_flush; #define _PAGE_IO (_PAGE_KERNEL | _PAGE_NO_CACHE | _PAGE_GUARDED) #define _PAGE_RAM (_PAGE_KERNEL | _PAGE_HWEXEC) -#if defined(CONFIG_KGDB) || defined(CONFIG_XMON) || defined(CONFIG_BDI_SWITCH) +#if defined(CONFIG_KGDB) || defined(CONFIG_XMON) || defined(CONFIG_BDI_SWITCH) ||\ + defined(CONFIG_KPROBES) /* We want the debuggers to be able to set breakpoints anywhere, so * don't write protect the kernel text */ #define _PAGE_RAM_TEXT _PAGE_RAM -- 2.20.1