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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 9E53DCA9EA9 for ; Fri, 18 Oct 2019 19:00:47 +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 7B48D21897 for ; Fri, 18 Oct 2019 19:00:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WtdUrwDP"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="fGjlwqaP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B48D21897 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.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:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0P8ktVvkHOR0sN8DddpiAIyIWh+yJhUbNZ9j1f/y1Q0=; b=WtdUrwDPQ0+JbY diM1xFaPAQx3l2YtV93lhsaHQ5F218noCvLQaPhATQ9jqwsShS891MOtGmFnlKOUqsfWtxoPZXK9+ KbmN0NQ55SdN8bej3bEYpn5xQ7Sj4MNBjevBJe/8X3XmzxZEcBHi+QV8/Oh4hePK4rFSw+D0oI/tk MJn4KlmuZPJiP5OljU8s9i4Pek2gHOCeztucs29Sf2IV75nz8uOK2c5ed9iLIsfkiXMjQmQiyG5yR hCJOS91QjWF1ODsmiCnzORJKVgwmRWwetV1QQwTa8s9iV8506GIEI0VbvkjCmqvNRluqcZPVXO6Yt H3nj2UKKNKYIG7ItlFfQ==; 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 1iLXUV-0005Jo-1o; Fri, 18 Oct 2019 19:00:47 +0000 Received: from mail-ua1-x944.google.com ([2607:f8b0:4864:20::944]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iLXUR-0005JA-9p for linux-arm-kernel@lists.infradead.org; Fri, 18 Oct 2019 19:00:44 +0000 Received: by mail-ua1-x944.google.com with SMTP id n2so2036275ual.11 for ; Fri, 18 Oct 2019 12:00:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=dHnooVFY2SD/hhEM3K3r0PH8N73JFv2NbOv8bRM4m2E=; b=fGjlwqaPn26KxRb9o+F4zrhfo5SkElhAWo4zrZYkQX9pYzl+Gat5G9cEzwzzgLT0yN 01vXJtveJQV2qNvuL3dsYa3uHnA44CbQiyZWnm0OfAnXngfbQBE6/GoC7xkKTjBJoQ1W I3TlO2mOikI6Kr/w+ct+2TTOTmiNs0XrL0v8Qsjwm5i6295ZB9suC9+VQPpZngTAqbXp lbTN8AhrIsPleMkGbxdHNZqq0UgR8TbuoHXfoDLAHfBp5Dt4CXqh/ghNRZE/atlkwC4C f/z8a9w78sIenvmPm6uGln+51flj9Z7ABSXfofYGZvMWcJmJ0vLmRcx9Etw4H3lXK2ux qiHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=dHnooVFY2SD/hhEM3K3r0PH8N73JFv2NbOv8bRM4m2E=; b=tpqC/teudn7u88gRIEmFo5UyHZ8QOwLDBa8bGbvkdmyvhPnM5h22rqimrh1dMZyBWA PGZbsWwe8glAD6Xa1Dpskzw1n32QIRY+B1KdcvzPtDdY3UAMAj4tNWxdkGzQ2tV9RHSP CiW9IdaHLw1V8ZCo5DMSlG/yWJ0nR/4HCUqSQ4CXrMyXd9/H9VHhMXtwAxW0e+u9iZJy +GsOa84QtTC29NhzPTM8alTZVlBigaHFt9/CuUTUzVX4ytqYiKrMsNOwGu6V4ZQaZRdH lbdmHOOtMw6BRynZFz5yrwfjMQ2g9RLY59CbADP+aYKUwxgEqBoUz3jBb0df4mSV/vqa C/Nw== X-Gm-Message-State: APjAAAUfuFg9BgXjGTjOyI5jWWIbrymZYVBhVXYfJF0i9C1CAccTcTr0 9qBvyAj8N0RROtwW41ADH4LE+jfVE08M1ci9Rd6yXA== X-Google-Smtp-Source: APXvYqy+QiLkN9pfvjcYpnB+QYepyp79m5l6k8r6HsNNtj0nqOOoe5lpxNRIDuav5cK0cYo+BuFsIE1uUC/SJFG20xg= X-Received: by 2002:a1f:b202:: with SMTP id b2mr6191356vkf.59.1571425241664; Fri, 18 Oct 2019 12:00:41 -0700 (PDT) MIME-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191018161033.261971-6-samitolvanen@google.com> In-Reply-To: From: Sami Tolvanen Date: Fri, 18 Oct 2019 12:00:30 -0700 Message-ID: Subject: Re: [PATCH 05/18] arm64: kbuild: reserve reg x18 from general allocation by the compiler To: Nick Desaulniers X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191018_120043_362826_FD921508 X-CRM114-Status: GOOD ( 13.37 ) 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: Mark Rutland , Kees Cook , Ard Biesheuvel , Catalin Marinas , Kernel Hardening , LKML , Steven Rostedt , clang-built-linux , Laura Abbott , Will Deacon , Dave Martin , Linux ARM 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, Oct 18, 2019 at 10:32 AM 'Nick Desaulniers' via Clang Built Linux wrote: > > and remove the mention from > > the LL/SC compiler flag override. > > was that cut/dropped from this patch? > > > > > Link: https://patchwork.kernel.org/patch/9836881/ > > ^ Looks like it. Maybe it doesn't matter, but if sending a V2, maybe > the commit message to be updated? True. The original patch is from 2017 and the relevant part of arm64/lib/Makefile no longer exists. I'll update this accordingly. > I like how this does not conditionally reserve it based on the CONFIG > for SCS. Hopefully later patches don't wrap it, but I haven't looked > through all of them yet. In a later patch x18 is only reserved with SCS. I'm fine with dropping that patch and reserving it always, but wouldn't mind hearing thoughts from the maintainers about this first. Sami _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel