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=-8.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 6CBA6CA9EAF for ; Mon, 21 Oct 2019 22:43:45 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id B373F2089C for ; Mon, 21 Oct 2019 22:43:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="b7OnnKII" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B373F2089C Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17083-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 21566 invoked by uid 550); 21 Oct 2019 22:43:39 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 21548 invoked from network); 21 Oct 2019 22:43:38 -0000 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=a8E0A8Vlgzb4xSRYYj/bS6TXPUSZill0B9wa3qYYw0E=; b=b7OnnKIICEZMVXFl1NmYOdDcFZHXchQiF9AA/1N5pJuawnuvHkVE1IlsM/lRRh2pOy +tASGs8d3rjxlFCky/tFGjrZodoX0p4Deov9tvP++w+7DeZr8MYEjdMkf7sAhwlH6Gxc WJv6o+CSvqzoTlGP8vtZanFkkIcmQzBroXGREgjwNEhr/HuPvHIR+xU/UJcSYgDti2V1 r1cQGVXNTkoPdaT2rZPVCTE/vqwrjXU7v+mianqUEVDhMJMb0ii90mYChlbeJqqrrVsO xszro/NyKQZOLCMnYcBtQPbBwGcEqBHnQ5xmgMZkhV8tOojOjuh3cxC3jt2Py6yycBJU fm5Q== 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=a8E0A8Vlgzb4xSRYYj/bS6TXPUSZill0B9wa3qYYw0E=; b=lZSBtd4GYKuQVbXR3CsU0b7qKnoPhmv3xnn57187F6ddaJQEhCpXfo6batyzLySZbv QaDpBjTeBhYGy+t5uSQ/nbAq2b5n6VHI9BJIJs6BCitmptahv7xuRTjI9Dd3iI2Itv/w CSmPH3aWdSS1xaNpEAHDHcCZmg5Yw+PqlBvYFdOMyyEgoxKORVlu55hbblhRn9Wmd/2d habBJt1QgQ3fkripF+h2Omq/YVMDeSUwR13qb9Xtwk9e4/lLqS8x59kt7TjvPDtXEDA2 HShZNHmE4Oov/QIoGfJxIcQUseP9O9aAvbTkAVdUfZMONNsTj+lrnQbN6dKyDbk2hYFZ Zn5Q== X-Gm-Message-State: APjAAAUQ3sCu+gGPH92yPSMpRltOvwCcqKT9/4dIFPehgdAdHUgwUw94 DzPNeJjTvFuWTR7YRCL2SotZ4QDjwew5ug5gItinzA== X-Google-Smtp-Source: APXvYqxm3g+B4XpEPIU+7n7e+ETZjean8RmHMKds1LlOCp+Q7indJHinK9NpFNA5K8TZ8NnejNJPfqBCKWSQ8YgLxPA= X-Received: by 2002:a67:fb44:: with SMTP id e4mr113225vsr.112.1571697806489; Mon, 21 Oct 2019 15:43:26 -0700 (PDT) MIME-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191018161033.261971-14-samitolvanen@google.com> <20191021165649.GE56589@lakrids.cambridge.arm.com> In-Reply-To: <20191021165649.GE56589@lakrids.cambridge.arm.com> From: Sami Tolvanen Date: Mon, 21 Oct 2019 15:43:14 -0700 Message-ID: Subject: Re: [PATCH 13/18] arm64: preserve x18 when CPU is suspended To: Mark Rutland Cc: Will Deacon , Catalin Marinas , Steven Rostedt , Ard Biesheuvel , Dave Martin , Kees Cook , Laura Abbott , Nick Desaulniers , clang-built-linux , Kernel Hardening , linux-arm-kernel , LKML Content-Type: text/plain; charset="UTF-8" On Mon, Oct 21, 2019 at 9:56 AM Mark Rutland wrote: > This should have a corresponding change to cpu_suspend_ctx in > . Otherwise we're corrupting a portion of the stack. Ugh, correct. I'll fix this in the next version. Thanks. Sami