From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB4E9C432C0 for ; Fri, 22 Nov 2019 11:36:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 78DC120679 for ; Fri, 22 Nov 2019 11:36:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="LboN2LgP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 78DC120679 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Zrceaoywll23fmIu6wVf1xB1LRb2baxO6lzugTdEFPU=; b=LboN2LgP/wWMGo JcuFUaD063CqGMmO5fjvJ2drSDmX52WH/yTJyjFARMfU2sq3B7rK8fO6ym82uUeL3P4m0Rn+3IM3V FDEWAliV0OSMUxAlxsNNw/4lVvd6b3NZiDV3MqfDQ+IdPBLqLDI/hGwnQgwomr5oRxH3gQTtzrAXU lARRbZISgA9NtbSj56qzokTwJXfQ8QrCJEn3JjQdylNk0kcYMXHr7+124kk/YGxYVBqUznUnaGJwm 5pS8MVAZdxpjZcyGz8Yl4cRxmaaokrw2MutOZhu+KvsswGjaxNtIkvpjfz2ElTw8GDPS/jgsoAC9e bHuDCOQf32NP/RuP1chA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iY7EK-00067t-Mt; Fri, 22 Nov 2019 11:36:04 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iY7EI-00067a-5R for linux-arm-kernel@lists.infradead.org; Fri, 22 Nov 2019 11:36:03 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 82058328; Fri, 22 Nov 2019 03:36:01 -0800 (PST) Received: from lakrids.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B71083F703; Fri, 22 Nov 2019 03:36:00 -0800 (PST) Date: Fri, 22 Nov 2019 11:35:53 +0000 From: Mark Rutland To: Steven Rostedt Subject: Re: KASAN_INLINE && patchable-function-entry Message-ID: <20191122113553.GA16287@lakrids.cambridge.arm.com> References: <20191121183630.GA3668@lakrids.cambridge.arm.com> <20191121142737.69978ef9@oasis.local.home> <20191122113257.GB15749@lakrids.cambridge.arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191122113257.GB15749@lakrids.cambridge.arm.com> User-Agent: Mutt/1.11.1+11 (2f07cb52) (2018-12-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191122_033602_249588_3CE1FD58 X-CRM114-Status: UNSURE ( 6.65 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Torsten Duwe , Ingo Molnar , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Nov 22, 2019 at 11:32:57AM +0000, Mark Rutland wrote: > Another option would be to have arm64's ftrace_adjust_addr() detect this > case and return NULL, given we don't need to perform any call site > initialization for the redundant NOPs. I'm just not sure if we have all > the necessary information at that point, though. Whoops; I meant ftrace_call_adjust() above. Mark. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel