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authorCatalin Marinas <catalin.marinas@arm.com>2009-07-24 12:34:55 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2009-07-24 12:34:55 +0100
commit09529f7a1a010cc364267fc5895a71c3853eb82c (patch)
tree67c02ab7314c48766812065a199c2277f7fe6688 /arch/arm/mm/fault.c
parent16c79651a5ee1ad7e4fca65a7c5309dfca89ed28 (diff)
downloadop-kernel-dev-09529f7a1a010cc364267fc5895a71c3853eb82c.zip
op-kernel-dev-09529f7a1a010cc364267fc5895a71c3853eb82c.tar.gz
nommu: Fix the fault processing for the MMU-less case
The patch adds the necessary ifdefs around functions that only make sense when the MMU is enabled. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm/mm/fault.c')
-rw-r--r--arch/arm/mm/fault.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 6fdcbb7..ee01cca 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -23,6 +23,7 @@
#include "fault.h"
+#ifdef CONFIG_MMU
#ifdef CONFIG_KPROBES
static inline int notify_page_fault(struct pt_regs *regs, unsigned int fsr)
@@ -97,6 +98,10 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
printk("\n");
}
+#else /* CONFIG_MMU */
+void show_pte(struct mm_struct *mm, unsigned long addr)
+{ }
+#endif /* CONFIG_MMU */
/*
* Oops. The kernel tried to access some page that wasn't present.
@@ -171,6 +176,7 @@ void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
__do_kernel_fault(mm, addr, fsr, regs);
}
+#ifdef CONFIG_MMU
#define VM_FAULT_BADMAP 0x010000
#define VM_FAULT_BADACCESS 0x020000
@@ -322,6 +328,13 @@ no_context:
__do_kernel_fault(mm, addr, fsr, regs);
return 0;
}
+#else /* CONFIG_MMU */
+static int
+do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
+{
+ return 0;
+}
+#endif /* CONFIG_MMU */
/*
* First Level Translation Fault Handler
@@ -340,6 +353,7 @@ no_context:
* interrupt or a critical region, and should only copy the information
* from the master page table, nothing more.
*/
+#ifdef CONFIG_MMU
static int __kprobes
do_translation_fault(unsigned long addr, unsigned int fsr,
struct pt_regs *regs)
@@ -378,6 +392,14 @@ bad_area:
do_bad_area(addr, fsr, regs);
return 0;
}
+#else /* CONFIG_MMU */
+static int
+do_translation_fault(unsigned long addr, unsigned int fsr,
+ struct pt_regs *regs)
+{
+ return 0;
+}
+#endif /* CONFIG_MMU */
/*
* Some section permission faults need to be handled gracefully.
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