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 4204FCD98DA for ; Mon, 15 Jun 2026 16:10:31 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=oavtcVs5GMUEYIHSjYOMZmbm65xOw75SXSw2tCo9C/Q=; b=4rZVZ5LxpOHP7wnRjxbXxJzKXF 6wrrvnbqXqNS34/yrN3KktJ8Ql5CdDUX5k/qbMRSHXB/fLBSuC78LOyeBTnFQjjkp34Kk02QsnBDn Pn+4ww8TI+u7KjzUeNHlvEKgYRZST3WX44Iu/sJYXxv60ZXak56fKNhDOpGQ1M+i3+M+296qCjUXz eZh8uuVFwfSTB8gq0Dje3tnC4U9eOjAqwEhdJtqySoN8ns031qHiA/tbe8kCHuinAcA8QGv4z6AM7 MFSyRivPp7tYMQXWt/f5Wx5c/7ZW4GzCMVB/slUknF/MSIhqy7qnRLazakPqsJ8rbQVMRmfcP/LTR F2O1XQuQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wZ9tJ-0000000EXzt-129X; Mon, 15 Jun 2026 16:10:25 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wZ9tI-0000000EXzT-0Bc5 for linux-arm-kernel@lists.infradead.org; Mon, 15 Jun 2026 16:10:24 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id CAC1441A7F; Mon, 15 Jun 2026 16:10:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DC7051F00A3D; Mon, 15 Jun 2026 16:10:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781539823; bh=oavtcVs5GMUEYIHSjYOMZmbm65xOw75SXSw2tCo9C/Q=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ImWjuFDPO6Xe+bOe18Xx7H8FSwtJc2F8hOBS98xRCMXBXkpzCz/lPIN8oY0vJkH9A h0jSfVJThF7ChGDW9k1EMfif+1OwATGLyDnRvRKbYdU491SJHdaFZn7XTwNpLKHnlO if7h6jeFFp0EMeUKOomAVxsYo4fJw/z4wQcqopTD1XG42oBfRHV1r2NXEs+TBmzyQy L8jWtwbITndX7YRP6tonb8C2ofQD01OUobSqj/MPogQRH9uBWU1A1XDkZ/H8eB8kT4 tJ1EMQPyp3xzhe+4a380wJH4IT/jL/NsPrkPF8ZARnMs/tWAW/PBdSHbqXOpRXVsY+ w8N0QtWoE97cg== From: Vincent Mailhol Date: Mon, 15 Jun 2026 18:09:00 +0200 Subject: [PATCH 04/19] arm: define DPS root partition type UUID MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260615-discoverable-root_partitions-v1-4-39c78fac42e2@kernel.org> References: <20260615-discoverable-root_partitions-v1-0-39c78fac42e2@kernel.org> In-Reply-To: <20260615-discoverable-root_partitions-v1-0-39c78fac42e2@kernel.org> To: Jens Axboe , Davidlohr Bueso , Alexander Viro , Christian Brauner , Jan Kara Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-efi@vger.kernel.org, linux-fsdevel@vger.kernel.org, Vincent Mailhol , Russell King , linux-arm-kernel@lists.infradead.org X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1645; i=mailhol@kernel.org; h=from:subject:message-id; bh=buQA0OLsJoBfvfUeMOaxxlJAmvEFctKXcDw8iTDomJw=; b=owGbwMvMwCV2McXO4Xp97WbG02pJDFkGylfu1+2t5847cU6x5rmgPENA1clQbvVX/pcec0hPe HzL9Mf2joksDGJcDJZiiizLyjm5FToKvcMO/bWEmcPKBDJEWqSBAQhYGPhyE/NKjXSM9Ey1DfUM gQwdIwYuTgGY6v13GRnOXLGy+qLWd9aTZ6KNhelUtX/iP7jCUoMrw6v83oqeVPJj+KeQ/2yqyMa cZ0/k2IvYJ76beSFWZfPdsyePrZ+74//i8CcsAA== X-Developer-Key: i=mailhol@kernel.org; a=openpgp; fpr=ED8F700574E67F20E574E8E2AB5FEB886DBB99C2 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 DPS [1] assigns GPT partition type UUIDs to operating system partitions. Root partitions use architecture-specific type UUIDs so the OS can discover the intended root filesystem without relying on a root= cmdline option. Define DPS_ROOT_PARTITION_TYPE_UUID in asm/dps_root.h for ARM and select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID. [1] The Discoverable Partitions Specification (DPS) Link: https://uapi-group.org/specifications/specs/discoverable_partitions_specification/ Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vincent Mailhol --- arch/arm/Kconfig | 1 + arch/arm/include/asm/dps_root.h | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 73e6647bea46..deedb5d808fb 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -14,6 +14,7 @@ config ARM select ARCH_HAS_DMA_ALLOC if MMU select ARCH_HAS_DMA_OPS select ARCH_HAS_DMA_WRITE_COMBINE if !ARM_DMA_MEM_BUFFERABLE + select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_KEEPINITRD diff --git a/arch/arm/include/asm/dps_root.h b/arch/arm/include/asm/dps_root.h new file mode 100644 index 000000000000..e9f0f24bcac2 --- /dev/null +++ b/arch/arm/include/asm/dps_root.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _ASM_ARM_DPS_ROOT_H +#define _ASM_ARM_DPS_ROOT_H + +#define DPS_ROOT_PARTITION_TYPE_UUID "69dad710-2ce4-4e3c-b16c-21a1d49abed3" + +#endif /* _ASM_ARM_DPS_ROOT_H */ -- 2.53.0