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 5C204C4167B for ; Mon, 4 Dec 2023 08:53:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229487AbjLDIwy (ORCPT ); Mon, 4 Dec 2023 03:52:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229666AbjLDIww (ORCPT ); Mon, 4 Dec 2023 03:52:52 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2221B103 for ; Mon, 4 Dec 2023 00:52:58 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF0B5C433C8; Mon, 4 Dec 2023 08:52:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701679977; bh=/WKznH8f95HbNlhZ0nk6+S4zAvOWVNlX0Xsl7lAIJLo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=WEGIGsLuFWcmUjZIVUWlDB4nJT4dLAt0tCHCx4JCrBNYvbDayjzodqZWW73nP3mC1 7LzfatUgQhC5gTuq5uDAEcXU0IeCq1GlvOhaat+1Mu82e+E/1F7YIv00lUaZTjKKxQ HRQ4E+04GdB8s8Y/Qk8xtolHBWRkj9vZE5Fq752wHlQ5vE05xWqJnQxkElPSlSKVeD 7tsBACW/B+CtGv2nscTMph5MyMyU2LlER6KDElZK4wbhXgQWwpPP2ImVC/01eQyDlB G/wwYL6dR8tVzC3J7zik6sGhCqxjj5S18Lb75jyNSDRgHRvEeOtRi11u2AS6ethBrF AZziOGY8XGBWw== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rA4hC-0019ND-Mt; Mon, 04 Dec 2023 08:52:55 +0000 Date: Mon, 04 Dec 2023 08:52:53 +0000 Message-ID: <86sf4ibb8a.wl-maz@kernel.org> From: Marc Zyngier To: Jason Wang Cc: Kunkun Jiang , dongli.zhang@oracle.com, cohuck@redhat.com, stefanha@redhat.com, mst@redhat.com, Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , Gavin Shan , Jean-Philippe Brucker , "open list:IRQCHIP DRIVERS" , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, wanghaibin.wang@huawei.com Subject: Re: [RFC PATCH] KVM: arm/arm64: GICv4: Support shared VLPI In-Reply-To: References: <20231102143507.840-1-jiangkunkun@huawei.com> <87msvt6cc7.wl-maz@kernel.org> <1fb8353e-e9c4-2570-c2ca-ec537c18ac4d@huawei.com> <86edh228xx.wl-maz@kernel.org> <952bd5dc-dd20-acc3-d77e-c9b14e5728d3@huawei.com> <87fs0k94og.wl-maz@kernel.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: jasowang@redhat.com, jiangkunkun@huawei.com, dongli.zhang@oracle.com, cohuck@redhat.com, stefanha@redhat.com, mst@redhat.com, oliver.upton@linux.dev, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, gshan@redhat.com, jean-philippe@linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, wanghaibin.wang@huawei.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: linux-kernel@vger.kernel.org On Mon, 04 Dec 2023 08:39:00 +0000, Jason Wang wrote: > > > Honestly, the virtio driver is broken (irrespective of the > > architecture), and incompatible with the GIC architecture. > > No matter how the driver is written, the host/KVM should be able to > survive from that. The host is perfectly fine, thanks for asking. The guest, however, is in a bad shape. M. -- Without deviation from the norm, progress is not possible.