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=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 5E5A6C3A59F for ; Thu, 29 Aug 2019 10:19:50 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id E070322CF5 for ; Thu, 29 Aug 2019 10:19:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E070322CF5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 47C884A582; Thu, 29 Aug 2019 06:19:49 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hrmvPac7Ta0R; Thu, 29 Aug 2019 06:19:48 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 214AF4A56E; Thu, 29 Aug 2019 06:19:48 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 51D154A563 for ; Thu, 29 Aug 2019 06:19:47 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mEJOyYvJmR6d for ; Thu, 29 Aug 2019 06:19:46 -0400 (EDT) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mm01.cs.columbia.edu (Postfix) with ESMTP id F3BFF4A4E5 for ; Thu, 29 Aug 2019 06:19:45 -0400 (EDT) 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 7D4B628; Thu, 29 Aug 2019 03:19:45 -0700 (PDT) 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 93D073F59C; Thu, 29 Aug 2019 03:19:44 -0700 (PDT) Date: Thu, 29 Aug 2019 11:19:42 +0100 From: Mark Rutland To: Alexandru Elisei Subject: Re: [kvm-unit-tests RFC PATCH 04/16] arm/arm64: selftest: Add prefetch abort test Message-ID: <20190829101942.GC44575@lakrids.cambridge.arm.com> References: <1566999511-24916-1-git-send-email-alexandru.elisei@arm.com> <1566999511-24916-5-git-send-email-alexandru.elisei@arm.com> <20190828140925.GC41023@lakrids.cambridge.arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.1+11 (2f07cb52) (2018-12-01) Cc: maz@kernel.org, pbonzini@redhat.com, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, andre.przywara@arm.com X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On Thu, Aug 29, 2019 at 09:18:35AM +0100, Alexandru Elisei wrote: > On 8/28/19 3:09 PM, Mark Rutland wrote: > > On Wed, Aug 28, 2019 at 02:38:19PM +0100, Alexandru Elisei wrote: > >> + /* > >> + * AArch64 treats all regions writable at EL0 as PXN. > > I didn't think that was the case, and I can't find wording to that > > effect in the ARM ARM (looking at ARM DDI 0487E.a). Where is that > > stated? > > It's in ARM DDI 0487E.a, table D5-33, footnote c: "Not executable, because > AArch64 execution treats all regions writable at EL0 as being PXN". I'll update > the comment to include the quote. Interesting; I was not aware of that particular behaviour. Thanks for the pointer! Mark. _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm