From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 B8722AD27; Mon, 3 Mar 2025 09:18:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740993523; cv=none; b=eM6oqolG4myHsKW/FXi3/iP9lDXlt9QViMzNoqiSX7sah4EZ+dZFxHqUAynLEcryPivLB3tmdGVhRWlhpe0qPIvWVqTnY/1GC6qS3JpVqxoZNqfFait5OcEAu9a+BgyhgUnpE167JKYuVffzjwrq56F4cc4CTJlCgqCJKZOV9V4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740993523; c=relaxed/simple; bh=Ve5w4wBza/LR9gEhfks2GNQsd1BGH+h8LS5mlA9F7SA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=UqKXyGtJNRz1eN/m5toBrP+H0LG6UpZqMHxlmqZGtTkdnoTbBNBMxBjVD44tWPiySRUlwRX40x9OXoEWyalFGHZ5jfbF6HyGSpFsihysDBYn3WZrkerIcsxXopJ9qweGLJh/B8ni13v8TDbDCLh84uDWlLo58NmmJNyu2Bd6woE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=snAJ488r; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="snAJ488r" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=1eCtu+hvRhYstMo2vG0z14zLR3g9gohNHmA5ExvpV9Y=; b=snAJ488rsQoq3hN1Z4FaRaQlQH 9so+l3wlu5qJyjQKPK8rZIvWFrAiMCWsMVPirTbkAjAwy8KrNZ+PwvGMWz1dS6hh+eqcfMrNpEgYf yynraGfpogGIpEsCt74e2Zy1LrJYqjIRw74qWxaCNR4BikDoF52TN5wAe+PgIeHRpZCjkdquHdAm0 mFMYGA1uwetI3N7IK/WIdZyNOmKr/fSFLOpHijzNTU+/3Z+CQKEh6ksGC9KIGKoHLh1JeC6QxOgHZ YL4PwFqb7dsxlsoSUc1CwOwL0YwuDz+NV41FSuuZwjc9FynHG9JVe1DWed11QXALcV2Nh3pHslyBl ifQrqumA==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tp1wB-0000000BOR4-35ew; Mon, 03 Mar 2025 09:18:11 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 5935F30049D; Mon, 3 Mar 2025 10:18:11 +0100 (CET) Date: Mon, 3 Mar 2025 10:18:11 +0100 From: Peter Zijlstra To: Menglong Dong Cc: rostedt@goodmis.org, mark.rutland@arm.com, alexei.starovoitov@gmail.com, catalin.marinas@arm.com, will@kernel.org, mhiramat@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, jolsa@kernel.org, davem@davemloft.net, dsahern@kernel.org, mathieu.desnoyers@efficios.com, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, morbo@google.com, samitolvanen@google.com, kees@kernel.org, dongml2@chinatelecom.cn, akpm@linux-foundation.org, riel@surriel.com, rppt@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH bpf-next v3 1/4] x86/ibt: factor out cfi and fineibt offset Message-ID: <20250303091811.GH5880@noisy.programming.kicks-ass.net> References: <20250303065345.229298-1-dongml2@chinatelecom.cn> <20250303065345.229298-2-dongml2@chinatelecom.cn> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250303065345.229298-2-dongml2@chinatelecom.cn> On Mon, Mar 03, 2025 at 02:53:42PM +0800, Menglong Dong wrote: > index c71b575bf229..ad050d09cb2b 100644 > --- a/arch/x86/kernel/alternative.c > +++ b/arch/x86/kernel/alternative.c > @@ -908,7 +908,7 @@ void __init_or_module noinline apply_seal_endbr(s32 *start, s32 *end, struct mod > > poison_endbr(addr, wr_addr, true); > if (IS_ENABLED(CONFIG_FINEIBT)) > - poison_cfi(addr - 16, wr_addr - 16); > + poison_cfi(addr, wr_addr); > } > } If you're touching this code, please use tip/x86/core or tip/master.