diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-12-02 09:31:43 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-12-02 21:59:57 +1100 |
| commit | 6f3a81b60091031c2c14eb2373d1937b027deb46 (patch) | |
| tree | 6185cf59f2c988b5d5f7f5ae943f7968dd88708f /arch/powerpc/mm/mem.c | |
| parent | b988e7797d09379057cf991ae082f9ad7a309a63 (diff) | |
| download | linux-6f3a81b60091031c2c14eb2373d1937b027deb46.tar.bz2 | |
powerpc/code-patching: Remove protection against patching init addresses after init
Once init section is freed, attempting to patch init code
ends up in the weed.
Commit 51c3c62b58b3 ("powerpc: Avoid code patching freed init sections")
protected patch_instruction() against that, but it is the responsibility
of the caller to ensure that the patched memory is valid.
All callers have now been verified and fixed so the check
can be removed.
This improves ftrace activation by about 2% on 8xx.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/504310828f473d424e2ed229eff57bf075f52796.1669969781.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 84d171953ba4..8b121df7b08f 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -344,7 +344,6 @@ void free_initmem(void) { ppc_md.progress = ppc_printk_progress; mark_initmem_nx(); - static_branch_enable(&init_mem_is_free); free_initmem_default(POISON_FREE_INITMEM); ftrace_free_init_tramp(); } |