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author | Ingo Molnar <mingo@kernel.org> | 2018-10-23 12:30:19 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2018-10-23 12:30:19 +0200 |
commit | dda93b45389f025fd3422d22cc31cc1ea6040305 (patch) | |
tree | 44a856744843e24ed1baf6ca4edb1be04809a606 /arch/powerpc/lib/code-patching.c | |
parent | 2e62024c265aa69315ed02835623740030435380 (diff) | |
parent | b61b8bba18fe2b63d38fdaf9b83de25e2d787dfe (diff) | |
download | linux-dda93b45389f025fd3422d22cc31cc1ea6040305.tar.gz linux-dda93b45389f025fd3422d22cc31cc1ea6040305.tar.bz2 linux-dda93b45389f025fd3422d22cc31cc1ea6040305.zip |
Merge branch 'x86/cache' into perf/core, to pick up fixes
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 | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 6ae2777c220d..5ffee298745f 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -28,12 +28,6 @@ static int __patch_instruction(unsigned int *exec_addr, unsigned int instr, { int err; - /* Make sure we aren't patching a freed init section */ - if (init_mem_is_free && init_section_contains(exec_addr, 4)) { - pr_debug("Skipping init section patching addr: 0x%px\n", exec_addr); - return 0; - } - __put_user_size(instr, patch_addr, 4, err); if (err) return err; @@ -148,7 +142,7 @@ static inline int unmap_patch_area(unsigned long addr) return 0; } -int patch_instruction(unsigned int *addr, unsigned int instr) +static int do_patch_instruction(unsigned int *addr, unsigned int instr) { int err; unsigned int *patch_addr = NULL; @@ -188,12 +182,22 @@ out: } #else /* !CONFIG_STRICT_KERNEL_RWX */ -int patch_instruction(unsigned int *addr, unsigned int instr) +static int do_patch_instruction(unsigned int *addr, unsigned int instr) { return raw_patch_instruction(addr, instr); } #endif /* CONFIG_STRICT_KERNEL_RWX */ + +int patch_instruction(unsigned int *addr, unsigned int instr) +{ + /* Make sure we aren't patching a freed init section */ + if (init_mem_is_free && init_section_contains(addr, 4)) { + pr_debug("Skipping init section patching addr: 0x%px\n", addr); + return 0; + } + return do_patch_instruction(addr, instr); +} NOKPROBE_SYMBOL(patch_instruction); int patch_branch(unsigned int *addr, unsigned long target, int flags) |