From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B2F643E9F4; Wed, 22 Jul 2026 21:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784756418; cv=none; b=tvOS/hEOw9ndqyM+1uNh83OdeHTpa/fOk3cP+2x46GEpOCk8Kuhnugul2uy1AORQzGzKMJrwR/20qUJkBzJrcLEWtCeMhOPnCVkN34XbUgQd9v8WmZ8g1SK6QNMJkKKyVB9gR9oz0XRvDVBkxM5DG1AGyoey5fWQEC7ttMcsh04= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784756418; c=relaxed/simple; bh=LHGRFLXQfRcR+pvqeqZGWFDrFa2LhclQR1cE8OQjQwQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lkFVn7pY+zz4naG2OxFLoK05Yu6GMCt/eWIyMcgaDrRbyhEtLxrCd0AXVKzgYt/VMwRfRIx0018s0yuCFYvSdQ72bLL4BfKBihC+QALY3H00U+p4K4OIh/V7MXH3I8HNIJcMg8s2bxPYRMTg1GGrwOLQYhBcfCWfQkXtJuNU7Ow= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AUPZN7pW; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AUPZN7pW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F19DB1F00A3D; Wed, 22 Jul 2026 21:40:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784756413; bh=+eMYlOGfJ10tYybtvyrsW1lB+RoAnjB3FfjZYdMkZkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AUPZN7pWFQ8uxNPRAe4YDaLWmhexm824Tfmx7Fb/7Qj8Xjp1s+JDFfA0QfJ2sC2Hn aXnEEM6d1eIruBNgHtfE6cnyP2fxiBhmrHGdhcKL9yUmaxwS6wfPTbyYPNdxfLMvaI GLwleQEecZXVWfg2JhxChcVGypsbOvolr65aisR/x1JfjW/gX+OsHFLF8x8GvzXL+N lhiquT01UYjN0fDVSZ6aS3PGWTFq++8xZO62wmfSy6ZllHAU3wb5OWHmfirAWz4qtX Al+yVvDRcGgr4+p8XPw8aHh+sfIYnsv0DuFQtCPky6xPCFeDiLsy6CemEV0iTUUL4u cneF5UJf738sA== From: Will Deacon To: Steven Rostedt , Masami Hiramatsu , Mark Rutland , Catalin Marinas , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , "Jose Fernandez (Anthropic)" Cc: kernel-team@android.com, Will Deacon , 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 , Puranjay Mohan , Xu Kuohai Subject: Re: [PATCH 0/2] arm64: ftrace: support DIRECT_CALLS without CALL_OPS Date: Wed, 22 Jul 2026 22:39:25 +0100 Message-ID: <178475345276.2109707.13204683362381752837.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260609-arm64-ftrace-direct-calls-v1-0-4a46f266697f@linux.dev> References: <20260609-arm64-ftrace-direct-calls-v1-0-4a46f266697f@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit 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