Re: [PATCH 0/2] arm64: ftrace: support DIRECT_CALLS without CALL_OPS
Will Deacon <[email protected]>
| Newsgroups | org.kernel.vger.linux-trace-kernel,dev.linux.lists.llvm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.bpf,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Tue, 09 Jun 2026 05:19:25 +0000, Jose Fernandez (Anthropic) wrote:
> On arm64, HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS is currently selected
> only when DYNAMIC_FTRACE_WITH_CALL_OPS is available. CALL_OPS, in
> turn, is mutually exclusive with kCFI: the pre-function NOPs it needs
> would change the offset of the pre-function type hash (see
> baaf553d3bc3 ("arm64: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS")),
> and the compiler support needed to reconcile the two does not exist
> yet.
>
> [...]
Applied to arm64 (for-next/misc), thanks!
[1/2] arm64: ftrace: prepare ftrace_modify_call() for use without CALL_OPS
https://git.kernel.org/arm64/c/123b4fc0f857
[2/2] arm64: ftrace: allow DIRECT_CALLS without CALL_OPS
https://git.kernel.org/arm64/c/9315e22b0c0a
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev