From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25D2A254AF5; Fri, 19 Sep 2025 18:38:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758307114; cv=none; b=C81ZzhwETn6zNpviD6xx9wAk5O3/5Ch/jR168d6RgagBbujVMY6jwpEB89ou+weVJo+7WwK8rDdvkY5GnRvBoL8loGQ9V8I8DTezdHvSO0kdUnQQYHgehHdQVOFADVeXlZm8QYtruzThT8TkU/ecs/xtzs0MtkjMjyPdDy5mdyc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758307114; c=relaxed/simple; bh=g5XD20gFfrYjZGNjDgzk53Skqg5rf5+ZLWDimhdGRRQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=fcCPMCb/abKC1G8RjD9L0tvULX7idO7cy6UI0ZJi+J9CZYm7rFAXc8BJy9IezNsB7hdG5OiQGiDJMEfMAY8RhjmA1NE0c2vlTsV5P+DFVpUUEQaks/StCrRi1RWFUdY76XcVb/Mh3ZOduns+/stfEAuKvn9s3R/lRmFdcKhJyns= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tI2ZhMvS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tI2ZhMvS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7DD77C4CEF0; Fri, 19 Sep 2025 18:38:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758307112; bh=g5XD20gFfrYjZGNjDgzk53Skqg5rf5+ZLWDimhdGRRQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tI2ZhMvSIF1eJc2Yzz5mRzFmeosSr+i9E2m7UPtkUCBrr/zfTPOWyIPbktNRpVjJr +uMODDpuw/f3KRCY+BVfTi5c2yAfHVCcg8einyftvYrJF98bmvJFNS4NusdFyQy8zn SQZilDuw3Tgrf09sZKtVwDFxIpMXSDOYoiRkCTEokyNksn5waxstRLsr5QX7zBP5MC hXkCd5/MPd/K2gcZuV799je9y3ES/dYq/q+TveH1WSm/Hiw/2+AKjGkue6Ey8QbWmP GytqAHSpd+Iji9+LtsU6VOfj9NTj14sBZg4GVi8LN+MMRq9utMjC0hMICsmdvwcXlA V/K83YFDRq8jQ== From: Will Deacon To: linux-arm-kernel@lists.infradead.org, Suzuki K Poulose Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, gshan@redhat.com, aneesh.kumar@kernel.org, sami.mujawar@arm.com, sudeep.holla@arm.com, steven.price@arm.com Subject: Re: [PATCH v3 0/3] arm64: realm: Add support for encrypted data from firmware Date: Fri, 19 Sep 2025 19:38:18 +0100 Message-Id: <175827312255.1088160.4082411097275002683.b4-ty@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250918125618.2125733-1-suzuki.poulose@arm.com> References: <20250918125618.2125733-1-suzuki.poulose@arm.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Thu, 18 Sep 2025 13:56:15 +0100, Suzuki K Poulose wrote: > Confidential compute firmware may provide secret data via reserved memory regions > (e.g., ACPI CCEL, EFI Coco secret area). These must be ioremap'ed() as encrypted. > As of now, realm only maps "trusted devices" (RIPAS = RSI_RIPAS_DEV) as encrypted. > This series adds support for mapping areas that are protected > (i.e., RIPAS = RSI_RIPAS_RAM) as encrypted. Also, extrapolating that, we can map > anything that is not RIPAS_EMPTY as protected, as it is guaranteed to be "protected". > > [...] Applied to arm64 (for-next/cca), thanks! [1/3] arm64: realm: ioremap: Allow mapping memory as encrypted https://git.kernel.org/arm64/c/fa84e534c3ec [2/3] arm64: Enable EFI secret area Securityfs support https://git.kernel.org/arm64/c/9e8a3df3e7f7 [3/3] arm64: acpi: Enable ACPI CCEL support https://git.kernel.org/arm64/c/d02c2e45b1e7 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev