diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2022-06-15 17:41:42 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-06-24 09:48:55 +0200 |
| commit | 7e6b9db27de9f69a705c1a046d45882c768e16c3 (patch) | |
| tree | 4d17aca7fd1d19374a41639fede3095b1117bb0e /arch/riscv | |
| parent | fdfd42892f311e2b3695852036e5be23661dc590 (diff) | |
jump_label: make initial NOP patching the special case
Instead of defaulting to patching NOP opcodes at init time, and leaving
it to the architectures to override this if this is not needed, switch
to a model where doing nothing is the default. This is the common case
by far, as only MIPS requires NOP patching at init time. On all other
architectures, the correct encodings are emitted by the compiler and so
no initial patching is needed.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220615154142.1574619-4-ardb@kernel.org
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/kernel/jump_label.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/riscv/kernel/jump_label.c b/arch/riscv/kernel/jump_label.c index 20e09056d141..e6694759dbd0 100644 --- a/arch/riscv/kernel/jump_label.c +++ b/arch/riscv/kernel/jump_label.c @@ -39,15 +39,3 @@ void arch_jump_label_transform(struct jump_entry *entry, patch_text_nosync(addr, &insn, sizeof(insn)); mutex_unlock(&text_mutex); } - -void arch_jump_label_transform_static(struct jump_entry *entry, - enum jump_label_type type) -{ - /* - * We use the same instructions in the arch_static_branch and - * arch_static_branch_jump inline functions, so there's no - * need to patch them up here. - * The core will call arch_jump_label_transform when those - * instructions need to be replaced. - */ -} |