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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0757C433F5 for ; Tue, 18 Jan 2022 16:04:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346177AbiARQEa (ORCPT ); Tue, 18 Jan 2022 11:04:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346164AbiARQE3 (ORCPT ); Tue, 18 Jan 2022 11:04:29 -0500 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D718C061574 for ; Tue, 18 Jan 2022 08:04:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=DsH535g+sCum3U0D/7MO9h2z+P8yeHq8a+8/WjWKEG8=; b=lAgjVtqbAX+LcI51G6OoJziCSP +PrjYIH1LIcTJ27BFDyc6TICiYuORE8KbFWM87OaPCyDKPuiWNdHmd1lqpZpiBEixGdtboC+WSRlv eIYlwGwLqbAzWJGYv4gaPLm6nx9gAeQVFJmDoBum0ojSZA2oTjIhLimSw3fcsJYdEV9t5+e0KifNy BUn7pR24xdUCkr6AKWU02zOOEjsl8jVEVgyM0YAKSBQvhjiPCnDLAFEu1kP021BQ2AVAN9iaAAyxz Jh3akb2htT7s6ES2QT5WDoIEjv1CYaBvA1yywrg/vIipwJc4CWBU7vPjNJ7TZ0t8SkM7tmjCuDRO6 NmTfrimw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:56768) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1n9qy8-0003x8-09; Tue, 18 Jan 2022 16:04:24 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1n9qy5-0004QA-JB; Tue, 18 Jan 2022 16:04:21 +0000 Date: Tue, 18 Jan 2022 16:04:21 +0000 From: "Russell King (Oracle)" To: Marc Zyngier Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, Andre Przywara , Christoffer Dall , Jintack Lim , Haibo Xu , Ganapatrao Kulkarni , James Morse , Suzuki K Poulose , Alexandru Elisei , kernel-team@android.com Subject: Re: [PATCH v5 15/69] KVM: arm64: nv: Inject HVC exceptions to the virtual EL2 Message-ID: References: <20211129200150.351436-1-maz@kernel.org> <20211129200150.351436-16-maz@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211129200150.351436-16-maz@kernel.org> Sender: Russell King (Oracle) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Nov 29, 2021 at 08:00:56PM +0000, Marc Zyngier wrote: > From: Jintack Lim > > As we expect all PSCI calls from the L1 hypervisor to be performed > using SMC when nested virtualization is enabled, it is clear that > all HVC instruction from the VM (including from the virtual EL2) > are supposed to handled in the virtual EL2. > > Forward these to EL2 as required. > > Signed-off-by: Jintack Lim > [maz: add handling of HCR_EL2.HCD] > Signed-off-by: Marc Zyngier > --- > arch/arm64/kvm/handle_exit.c | 11 +++++++++++ Reviewed-by: Russell King (Oracle) -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!