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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 83877F53D81 for ; Mon, 16 Mar 2026 18:13:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Subject:Cc:To:From:Message-ID:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=pXHXO4Z54CdZK2jSIhD6tIkR5xyAJF49FOt2wzoNyaE=; b=xyDcfMVfqYaSUIfGyqVcHa/ZjG PMvUl7pxzslzj95mzJ7JQWuoHWvUip07ybiEV+vkdOcenaKOw86c3UlxhCXyNSvUflEw0E3Vf0CIw DXZYhS1u2p5Z1CL8E/j/gl1kIKqcrwT0eEOn9FDrEqJ44yjAvqnRitq8NNMXXvBltxblz0GpeW4O8 hwEx1N/ea8/Ri0q5s7mj1OdDgwM/6WcBTpYVUbAa2KLVjNdSZOLb+O0ZZ+4/CnUHJS3NsNec0RBGQ 7UJfcntOBT5zLlnJB38AM7duGtL7FmVYzH7kDz9HpWaPUYyUsrGrzVH3NAmQwy8hwq6psh2Dej24G 4OBOpGaw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w2CR9-00000004f74-2ugE; Mon, 16 Mar 2026 18:13:07 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w2CR8-00000004f6x-3FrY for linux-arm-kernel@lists.infradead.org; Mon, 16 Mar 2026 18:13:06 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id C913960018; Mon, 16 Mar 2026 18:13:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72035C19421; Mon, 16 Mar 2026 18:13:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773684785; bh=mcq5BQW0yR0Ua/3eEaF+HfV4hfi4nOrG+gTQm3NMN1k=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=XGIkyp+VdeqtWWgNVwqaZUUEfxou4LfIa1IYMOlPQiqHaWzH3c2FzgY5KwJFqrgD9 lZC1KxSyVLvi4yATjBAUdizBnxBarHJPHWDIPnM0UUqsdXBdAwFqMi89AjQZEx9Fcr wzI2FrxqPxytJO30Ofe4QOaXHIlr8W8S5fxHReNkJxJlrGVwbzYtBs8h1uESGHs3XT 5nCrdIwCihaaL/Cjho8eMU8+W7zmSgPy0tzKhQnUKNk/o3mCyRm8eMxNgBdDpsCsH9 5oTCePz6RU80xD3vuuGfXc3VkwDG2TJuRE/hHagUK+YWBZXFVJSmgzYfE71rr3xTin 2fmOzTE/Zm/eA== 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 4.98.2) (envelope-from ) id 1w2CR5-00000002Xkc-20pD; Mon, 16 Mar 2026 18:13:03 +0000 Date: Mon, 16 Mar 2026 18:13:03 +0000 Message-ID: <86y0jr63tc.wl-maz@kernel.org> From: Marc Zyngier To: Fuad Tabba Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, qperret@google.com, vdonnefort@google.com Subject: Re: [PATCH v1 00/13] KVM: arm64: Refactor user_mem_abort() into a state-object model In-Reply-To: References: <20260306140232.2193802-1-tabba@google.com> <86ikb96kg8.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/30.1 (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: tabba@google.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, qperret@google.com, vdonnefort@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 06 Mar 2026 15:44:44 +0000, Fuad Tabba wrote: > > I have to admit, breaking this down into pieces and seeing how much > tidier and easier to understand it became felt oddly satisfying. I can only agree. Having played with this for a few days, I came up with a set of additional changes that get rid of this kvm_s2_fault entirely, and sandbox the state in funny ways. You'll find the result in your inbox... Thanks, M. -- Without deviation from the norm, progress is not possible.