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=-7.0 required=3.0 tests=BAYES_00,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 ED241C4151A for ; Wed, 3 Mar 2021 01:02:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B676E64FA6 for ; Wed, 3 Mar 2021 01:02:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343745AbhCCAxY (ORCPT ); Tue, 2 Mar 2021 19:53:24 -0500 Received: from mail.kernel.org ([198.145.29.99]:45722 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1581539AbhCBS6G (ORCPT ); Tue, 2 Mar 2021 13:58:06 -0500 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 D528B64F2F; Tue, 2 Mar 2021 18:57:25 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=hot-poop.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 1lHACy-00GmGh-4N; Tue, 02 Mar 2021 18:57:24 +0000 From: Marc Zyngier To: Suzuki K Poulose Cc: anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org, Christoffer Dall , Mark Rutland , stable@vger.kernel.org, Will Deacon , Catalin Marinas , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Alexandru Elisei Subject: Re: [PATCH] kvm: arm64: nvhe: Save the SPE context early Date: Tue, 2 Mar 2021 18:57:11 +0000 Message-Id: <161471117620.3770794.12358302238773672698.b4-ty@kernel.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210302120345.3102874-1-suzuki.poulose@arm.com> References: <20210302120345.3102874-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: suzuki.poulose@arm.com, anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org, christoffer.dall@arm.com, mark.rutland@arm.com, stable@vger.kernel.org, will@kernel.org, catalin.marinas@arm.com, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, alexandru.elisei@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Tue, 2 Mar 2021 12:03:45 +0000, Suzuki K Poulose wrote: > The nVHE KVM hyp drains and disables the SPE buffer, before > entering the guest, as the EL1&0 translation regime > is going to be loaded with that of the guest. > > But this operation is performed way too late, because : > - The owning translation regime of the SPE buffer > is transferred to EL2. (MDCR_EL2_E2PB == 0) > - The guest Stage1 is loaded. > > [...] Applied to kvmarm-master/fixes, thanks! [1/1] kvm: arm64: nvhe: Save the SPE context early commit: cfe1e2b6949785e90e84918295f2be1b6fd152b6 Cheers, M. -- Without deviation from the norm, progress is not possible. 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=-7.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 593D2C433DB for ; Tue, 2 Mar 2021 18:57:34 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id CDE6F64F32 for ; Tue, 2 Mar 2021 18:57:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDE6F64F32 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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 741C84B6DD; Tue, 2 Mar 2021 13:57:33 -0500 (EST) 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 fttU2ZJiah6V; Tue, 2 Mar 2021 13:57:32 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id B8EF64B6E6; Tue, 2 Mar 2021 13:57:30 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id D07EB4B461 for ; Tue, 2 Mar 2021 13:57:29 -0500 (EST) 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 Y6HFkKb4CgGG for ; Tue, 2 Mar 2021 13:57:27 -0500 (EST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 805824B444 for ; Tue, 2 Mar 2021 13:57:27 -0500 (EST) 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 D528B64F2F; Tue, 2 Mar 2021 18:57:25 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=hot-poop.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 1lHACy-00GmGh-4N; Tue, 02 Mar 2021 18:57:24 +0000 From: Marc Zyngier To: Suzuki K Poulose Subject: Re: [PATCH] kvm: arm64: nvhe: Save the SPE context early Date: Tue, 2 Mar 2021 18:57:11 +0000 Message-Id: <161471117620.3770794.12358302238773672698.b4-ty@kernel.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210302120345.3102874-1-suzuki.poulose@arm.com> References: <20210302120345.3102874-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: suzuki.poulose@arm.com, anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org, christoffer.dall@arm.com, mark.rutland@arm.com, stable@vger.kernel.org, will@kernel.org, catalin.marinas@arm.com, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, alexandru.elisei@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: kvm@vger.kernel.org, anshuman.khandual@arm.com, Catalin Marinas , stable@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org 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 Tue, 2 Mar 2021 12:03:45 +0000, Suzuki K Poulose wrote: > The nVHE KVM hyp drains and disables the SPE buffer, before > entering the guest, as the EL1&0 translation regime > is going to be loaded with that of the guest. > > But this operation is performed way too late, because : > - The owning translation regime of the SPE buffer > is transferred to EL2. (MDCR_EL2_E2PB == 0) > - The guest Stage1 is loaded. > > [...] Applied to kvmarm-master/fixes, thanks! [1/1] kvm: arm64: nvhe: Save the SPE context early commit: cfe1e2b6949785e90e84918295f2be1b6fd152b6 Cheers, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm 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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 E46F5C433E0 for ; Wed, 3 Mar 2021 15:07:42 +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 3A1BC60240 for ; 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Received: from mail.kernel.org ([198.145.29.99]) by casper.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lHAD7-0006uZ-1e for linux-arm-kernel@lists.infradead.org; Tue, 02 Mar 2021 18:57:33 +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 D528B64F2F; Tue, 2 Mar 2021 18:57:25 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=hot-poop.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 1lHACy-00GmGh-4N; Tue, 02 Mar 2021 18:57:24 +0000 From: Marc Zyngier To: Suzuki K Poulose Cc: anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org, Christoffer Dall , Mark Rutland , stable@vger.kernel.org, Will Deacon , Catalin Marinas , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Alexandru Elisei Subject: Re: [PATCH] kvm: arm64: nvhe: Save the SPE context early Date: Tue, 2 Mar 2021 18:57:11 +0000 Message-Id: <161471117620.3770794.12358302238773672698.b4-ty@kernel.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210302120345.3102874-1-suzuki.poulose@arm.com> References: <20210302120345.3102874-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: suzuki.poulose@arm.com, anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org, christoffer.dall@arm.com, mark.rutland@arm.com, stable@vger.kernel.org, will@kernel.org, catalin.marinas@arm.com, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, alexandru.elisei@arm.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-20210302_185733_837773_45586EB6 X-CRM114-Status: UNSURE ( 9.08 ) X-CRM114-Notice: Please train this message. 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, 2 Mar 2021 12:03:45 +0000, Suzuki K Poulose wrote: > The nVHE KVM hyp drains and disables the SPE buffer, before > entering the guest, as the EL1&0 translation regime > is going to be loaded with that of the guest. > > But this operation is performed way too late, because : > - The owning translation regime of the SPE buffer > is transferred to EL2. (MDCR_EL2_E2PB == 0) > - The guest Stage1 is loaded. > > [...] Applied to kvmarm-master/fixes, thanks! [1/1] kvm: arm64: nvhe: Save the SPE context early commit: cfe1e2b6949785e90e84918295f2be1b6fd152b6 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