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=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 29161C433E0 for ; Fri, 5 Mar 2021 19:04:09 +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 AEA3164F1D for ; Fri, 5 Mar 2021 19:04:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AEA3164F1D 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:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc: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=XXmJJdHTAWZwDalghidotts2MLdTArxAbIz+ynepfeo=; b=STG1rxdMMzXcvZk9V2F3PO2QI rlpeFyV54vBqA/aglMv4bJaEk8v57EsBSNzP/G9H1axN+sboCC7E/WopQk2YweOB+IX7gCtXtCcH0 V4854lkdj5RM7fbmLqigNODatAafdiyUANYMoJ4shWjfnRdQqbbNDvb7zVIzT+0S216xcIKG6hNgr jFqmFH1aYh921tCfxWr6qFP9paxBC6CkHwxx5/vrP25CkOsuuf5Pf9NoPVrMwiFQVlho3Ez6nRICc +/jBkGdGQm5pEC+nD+aeMGl8aoVmDAAFRT9Jy5mZE//y1ln67JBZHtlihx5nk+dp8UlMOKXABLxay RYs5O9a0A==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lIFiO-00G5rn-HK; Fri, 05 Mar 2021 19:02:20 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lIFiH-00G5q9-Kl for linux-arm-kernel@lists.infradead.org; Fri, 05 Mar 2021 19:02:16 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 43CA96509A; Fri, 5 Mar 2021 19:02:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1614970932; bh=+HY4tyg5MEsNmrtevimpEfoDy4PsjuAzV42+G/FLMVQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=c0cXkUhfqGyQIPH14jJKrVOWqS+nkTdjAw7+FncqA/3JiGVSK+/buLmQR5CPX0Lkh dCW7dcorA8Yx48N9S2h9g8R6GdPZXZYvGcN7K0Y5c7YEU2XCqb+THvNf39KKmGJPvg 7SlguW8KOncXG2JrcnBGVpunFHsss2GoyrMFKsQFZP5J3xQ2z4EDXBStFAxnJPxUzg aey5TwsRQzPpuo0eVRH2m/iUb2g8ydUomIz9TElX1hpK5ZM3qVToNjiQU/XknJ3DEC KaxOe0sr57aCvtJqjnsfjIielTW4HTsR6GLfySdzgt5AgvwD20BCAzORpz6fubBLwx lvJZ9Wwx+U9Wg== Date: Fri, 5 Mar 2021 19:02:06 +0000 From: Will Deacon To: Quentin Perret Cc: catalin.marinas@arm.com, maz@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, android-kvm@google.com, linux-kernel@vger.kernel.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, tabba@google.com, mark.rutland@arm.com, dbrazdil@google.com, mate.toth-pal@arm.com, seanjc@google.com, robh+dt@kernel.org Subject: Re: [PATCH v3 31/32] KVM: arm64: Disable PMU support in protected mode Message-ID: <20210305190205.GA23633@willie-the-truck> References: <20210302150002.3685113-1-qperret@google.com> <20210302150002.3685113-32-qperret@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210302150002.3685113-32-qperret@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210305_190214_133684_C1521FA3 X-CRM114-Status: GOOD ( 11.53 ) 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 Tue, Mar 02, 2021 at 03:00:01PM +0000, Quentin Perret wrote: > The host currently writes directly in EL2 per-CPU data sections from > the PMU code when running in nVHE. In preparation for unmapping the EL2 > sections from the host stage 2, disable PMU support in protected mode as > we currently do not have a use-case for it. > > Signed-off-by: Quentin Perret > --- > arch/arm64/kvm/perf.c | 3 ++- > arch/arm64/kvm/pmu.c | 8 ++++---- > 2 files changed, 6 insertions(+), 5 deletions(-) Acked-by: Will Deacon Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel