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=-7.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 999BEC433DB for ; Tue, 9 Mar 2021 18:02:44 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 F30376522E for ; Tue, 9 Mar 2021 18:02:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F30376522E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=CHb/5TY+cUr1W3G0OzcFJ0+EsAjsu0X6OBFZ8xc6Q70=; b=D2daGfWQzaVc2tO5NJzooLshQ XTlgsZmbqZ8vTrWO3VKugE5iMscBeN0cLuLZNpFEt35MRohIMGZwwgTzGhbj5Y8bQ3oIhOvI2N2dL 6Xlc6l9DkwutaDujhq9armEGrdACKwWsV5YS7RvKYT956E7vAOun5QVuNQegopXT6PyLkAwh/LG5p +60WI17OIUJp+vLzvImNcaqFQKjNiwSGqd8uskY2IXS3MUiUfdBFK44DeHmlOoP3MbhWmYy+fHd5l rYn4YurS3Q9pEjAjbscBAkOs/LgPtvBAE0gmmjfFld9BRYI7Go2yLw0/37GA9dl3uUBROzAmDx/qJ cI5l/UZyA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lJgfh-005DiD-7p; Tue, 09 Mar 2021 18:01:29 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lJgfc-005Dhf-LV for linux-arm-kernel@lists.infradead.org; Tue, 09 Mar 2021 18:01:26 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 12BBB65228; Tue, 9 Mar 2021 18:01:23 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1lJgfY-000blB-TY; Tue, 09 Mar 2021 18:01:21 +0000 From: Marc Zyngier To: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, Marc Zyngier Cc: kernel-team@android.com, Catalin Marinas , James Morse , Mark Rutland , Alexandru Elisei , Suzuki K Poulose , Will Deacon , Julien Thierry Subject: Re: [PATCH] KVM: arm64: Ensure I-cache isolation between vcpus of a same VM Date: Tue, 9 Mar 2021 18:01:05 +0000 Message-Id: <161531284779.3772144.1323992258111335863.b4-ty@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210303164505.68492-1-maz@kernel.org> References: <20210303164505.68492-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, maz@kernel.org, kernel-team@android.com, catalin.marinas@arm.com, james.morse@arm.com, mark.rutland@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, will@kernel.org, julien.thierry.kdev@gmail.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210309_180124_947517_2FFEB4FC X-CRM114-Status: GOOD ( 12.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 3 Mar 2021 16:45:05 +0000, Marc Zyngier wrote: > It recently became apparent that the ARMv8 architecture has interesting > rules regarding attributes being used when fetching instructions > if the MMU is off at Stage-1. > > In this situation, the CPU is allowed to fetch from the PoC and > allocate into the I-cache (unless the memory is mapped with > the XN attribute at Stage-2). > > [...] Applied to fixes, thanks! [1/1] KVM: arm64: Ensure I-cache isolation between vcpus of a same VM commit: 01dc9262ff5797b675c32c0c6bc682777d23de05 Cheers, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel