From: Will Deacon <will@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
"Jose Fernandez (Anthropic)" <jose.fernandez@linux.dev>
Cc: kernel-team@android.com, Will Deacon <will@kernel.org>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev,
bpf@vger.kernel.org, Florent Revest <revest@chromium.org>,
Puranjay Mohan <puranjay@kernel.org>,
Xu Kuohai <xukuohai@huawei.com>
Subject: Re: [PATCH 0/2] arm64: ftrace: support DIRECT_CALLS without CALL_OPS
Date: Wed, 22 Jul 2026 22:39:25 +0100 [thread overview]
Message-ID: <178475345276.2109707.13204683362381752837.b4-ty@kernel.org> (raw)
In-Reply-To: <20260609-arm64-ftrace-direct-calls-v1-0-4a46f266697f@linux.dev>
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
prev parent reply other threads:[~2026-07-22 21:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-09 5:19 [PATCH 0/2] arm64: ftrace: support DIRECT_CALLS without CALL_OPS Jose Fernandez (Anthropic)
2026-06-09 5:19 ` [PATCH 1/2] arm64: ftrace: prepare ftrace_modify_call() for use " Jose Fernandez (Anthropic)
2026-06-11 4:06 ` Xu Kuohai
2026-06-09 5:19 ` [PATCH 2/2] arm64: ftrace: allow DIRECT_CALLS " Jose Fernandez (Anthropic)
2026-06-11 4:06 ` Xu Kuohai
2026-06-09 9:50 ` [PATCH 0/2] arm64: ftrace: support " Puranjay Mohan
2026-06-10 4:42 ` Clayton Craft
2026-06-10 23:36 ` Nathan Chancellor
2026-07-10 14:07 ` Jose Fernandez (Anthropic)
2026-07-10 15:55 ` Steven Rostedt
2026-07-13 16:47 ` Mark Rutland
2026-07-22 21:39 ` Will Deacon [this message]
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