From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 866FD476CC2; Thu, 1 Oct 2026 16:37:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790872667; cv=none; b=YEHQWrpk74XD3ELWUQA99IGbKvuTvezmQMVi1TCSQ1fRr+i4NlD20agQ4Bz0x9Ag3vSN6BX9QoBQxCUNCmobdLXp/3/zKf5SQm3+1DS/dY11KZX9dlAP0X1Fzvthcil5rs4p+/BESxt+4aQ4tk0tXG8/Tv140Cb1zYvg0rDcjuM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790872667; c=relaxed/simple; bh=K9BrYtciJGkSxMEbrXtvHk2FbFP0IJ/JnLlba9Tczjs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=dEJbNnqeo/Jrv9hFQyn9Y912VY1kpr43bp7YU4Oa9RFdPg/9gdpE2VFTHK4jxYF2/uAxK6BlyJaEbG6CsPDDFNmdWq0vCDa8L6//gxXv83J7tKD2KZ3mvQD8rHQuO47C+5NhcJgUTOpLdYJ8dL58NOxgu+E/Qh+EK7FGuRw83O0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=BsV62LOq; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="BsV62LOq" 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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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