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| author | Ingo Molnar <mingo@kernel.org> | 2014-02-09 13:13:45 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-09 13:13:45 +0100 |
| commit | 3c3d7cb1db4af176dab843f22ea092a4ef1eb989 (patch) | |
| tree | 9c1b2951432ed10d0654a8e13cbe57b51260d06b /arch/powerpc/lib/code-patching.c | |
| parent | 0e9f2204cfa6d79abe3e525ddf7c4ab5792cc751 (diff) | |
| parent | 494479038d97f1b9f76fc633a360a681acdf035c (diff) | |
Merge branch 'linus' into perf/core
Refresh the branch to a v3.14-rc base before queueing up new devel patches.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/lib/code-patching.c')
| -rw-r--r-- | arch/powerpc/lib/code-patching.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 17e5b2364312..d5edbeb8eb82 100644 --- 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 |