Re: [PATCH bpf v3 1/2] x86/ftrace: Mark jmp mode by clearing bit 63 of trampoline address

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Wed, 28 Oct 2026 21:23:44 +0100 you wrote:
> Since commit 0c3772a8db1f ("x86/ftrace: Implement DYNAMIC_FTRACE_WITH_JMP")
> ftrace_call_replace() emits a jmp instead of a call when bit 0 of the
> target is set, the mark of a direct trampoline that is entered by a jmp.
> ftrace_update_ftrace_func() and arch_ftrace_update_trampoline() use it
> too, for the call of the ftrace callback in ftrace_caller, ftrace_regs_caller
> and the ftrace trampolines, but a callback is a C function and can start
> at an odd address. It does with gcc13 and CONFIG_CC_OPTIMIZE_FOR_SIZE=y:
> gcc13 has no -fmin-function-alignment, so CONFIG_CC_HAS_SANE_FUNCTION_ALIGNMENT
> is not set, and the -falign-functions=16 used in its place does not apply
> to functions optimized for size. Here ftrace_ops_list_func() starts at:
> 
> [...]

Here is the summary with links:
  - [bpf,v3,1/2] x86/ftrace: Mark jmp mode by clearing bit 63 of trampoline address
    https://git.kernel.org/bpf/bpf/c/31ac959c915c
  - [bpf,v3,2/2] selftests/bpf: Test kprobe and fentry/fexit programs on one function
    https://git.kernel.org/bpf/bpf/c/99681d9a384f

You are awesome, thank you!
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