powerpc: Move the patch_exception to a common place

So that it can be used by other codes. No function change.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/code-patching.h b/arch/powerpc/include/asm/code-patching.h
index a6f8c7a5cbb74f61925243a1ca42bc183d80361a..97e02f985df8e47946438ecc1b0ba2f040ee7bf5 100644 (file)
--- a/arch/powerpc/include/asm/code-patching.h
+++ b/arch/powerpc/include/asm/code-patching.h
@@ -34,6 +34,13 @@ int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr);
 unsigned long branch_target(const unsigned int *instr);
 unsigned int translate_branch(const unsigned int *dest,
                              const unsigned int *src);
+#ifdef CONFIG_PPC_BOOK3E_64
+void __patch_exception(int exc, unsigned long addr);
+#define patch_exception(exc, name) do { \
+       extern unsigned int name; \
+       __patch_exception((exc), (unsigned long)&name); \
+} while (0)
+#endif
 
 static inline unsigned long ppc_function_entry(void *func)
 {

diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index 17e5b23643124347febe56a05f5deb7e1a2e361e..d5edbeb8eb8209e61a9d6524acfa565e3f30782f 100644 (file)
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c
@@ -159,6 +159,21 @@ unsigned int translate_branch(const unsigned int *dest, const unsigned int *src)
        return 0;
 }
 
+#ifdef CONFIG_PPC_BOOK3E_64
+void __patch_exception(int exc, unsigned long addr)
+{
+       extern unsigned int interrupt_base_book3e;
+       unsigned int *ibase = &interrupt_base_book3e;
+
+       /* Our exceptions vectors start with a NOP and -then- a branch
+        * to deal with single stepping from userspace which stops on
+        * the second instruction. Thus we need to patch the second
+        * instruction of the exception, not the first one
+        */
+
+       patch_branch(ibase + (exc / 4) + 1, addr, 0);
+}
+#endif
 
 #ifdef CONFIG_CODE_PATCHING_SELFTEST
 

diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 358d743031385ae7a269ba65200483227126d372..8805b7b87dc60e1f47e511116301d8865a86241f 100644 (file)
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -518,25 +518,6 @@ static void setup_page_sizes(void)
        }
 }
 
-static void __patch_exception(int exc, unsigned long addr)
-{
-       extern unsigned int interrupt_base_book3e;
-       unsigned int *ibase = &interrupt_base_book3e;
- 
-       /* Our exceptions vectors start with a NOP and -then- a branch
-        * to deal with single stepping from userspace which stops on
-        * the second instruction. Thus we need to patch the second
-        * instruction of the exception, not the first one
-        */
-
-       patch_branch(ibase + (exc / 4) + 1, addr, 0);
-}
-
-#define patch_exception(exc, name) do { \
-       extern unsigned int name; \
-       __patch_exception((exc), (unsigned long)&name); \
-} while (0)
-
 static void setup_mmu_htw(void)
 {
        /* Check if HW tablewalk is present, and if yes, enable it by: