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 273B7CA5FD6 for ; Thu, 1 Oct 2026 16:37:57 +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-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=hkI4B0+a9WH2Ce9DKIS5MASTZ5XWugplj40QV3OBLOM=; b=wUUm8arupon2NB++Q0TTe78jSe +PtayHod/ibGn5TVA60c8pgeq0PdT5F5Ut99FCwvD7y16jC10d0FlhCDKuJjCblbkOWywnzt1l9vO Aki0Z5ZAEv+HhiTzPrwueUGbIwXqeUKwBddeotKAtWvd9ihJbRjN5yFYCpY/Sh4YdFRRqmQszf++Z E+AO5MxM1zyitRlqGt8yBOPWABgWZMure1Xq6uaviMNaSFF9NCRMcw893Yl7xBHHLBIdin0SytaFA yIwy+XGjlA3VbgKLHcgFAGXEJfP2WwsoE1rjR/9xzTdJhnGpniTPpxlzI4LFYEjPP4w8GUiNuWL0C CZRydkSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCJn4-00000009jhd-2bDZ; Thu, 01 Oct 2026 16:37:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCJmz-00000009jg7-3rhs for linux-arm-kernel@lists.infradead.org; Thu, 01 Oct 2026 16:37:49 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6A8D7497; Thu, 1 Oct 2026 09:37:41 -0700 (PDT) Received: from [10.57.9.178] (unknown [10.57.9.178]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D8C683F85F; Thu, 1 Oct 2026 09:37:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1790872664; bh=K9BrYtciJGkSxMEbrXtvHk2FbFP0IJ/JnLlba9Tczjs=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=BsV62LOqI5ja68sCQcFyb5ijD1CAgATdMGzmBFi4PPZQ2Nl1po/USPeOyjARfB1hR 4IW2nKeALWQxil1hxMsJbWCTmjfJWwrfaJRQWTlMxqg8rSgve5w/QmYdvcMHIJ7CR0 apDR+U8DfZ9vBePkOCIe3Wvt8ZYFIpX+pUeF5fiY= Message-ID: Date: Thu, 1 Oct 2026 17:37:37 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v20 22/22] KVM: arm64: CCA: Control user register access for Realms Content-Language: en-GB To: Catalin Marinas Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, maz@kernel.org, will@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, steven.price@arm.com, aneesh.kumar@kernel.org, oupton@kernel.org, gshan@redhat.com, joey.gouly@arm.com, tabba@google.com, yuzenghui@huawei.com, linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com, sdonthineni@nvidia.com, alpergun@google.com, fj0570is@fujitsu.com, WeiLin.Chang@arm.com, lpieralisi@kernel.org, enju.kohei@fujitsu.com, sudeep.holla@arm.com, jonathan.cameron@oss.qualcomm.com, Jean-Philippe Brucker References: <20260924160504.853911-1-suzuki.poulose@arm.com> <20260924160504.853911-23-suzuki.poulose@arm.com> From: Suzuki K Poulose In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261001_093746_147842_8891306B X-CRM114-Status: UNSURE ( 9.66 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 01/10/2026 16:53, Catalin Marinas wrote: > On Thu, Sep 24, 2026 at 05:05:04PM +0100, Suzuki K Poulose wrote: >> From: Jean-Philippe Brucker >> >> The RMM restricts the access to the register states that the host can >> read/modify for a given Realm. >> >> e.g., At VCPU creation, can modify GPRS (x0-x30) and PC. >> While servicing SMCCC calls via RSI_HOST_CALL or servicing PSCI >> requests. >> MMIO emulation in the unprotected space. >> >> Additionally we use the sysreg configuration to advertise/configure the >> following Realm parameters, which are required before the Realm Descriptor >> :w > > Should use Emacs ;) > Dang it ;-) I have fixed it in v21. Thanks Cheers Suzuki