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Peter Anvin" , "Andrew Morton" , Rob Herring , "Saravana Kannan" , , , , CC: Brian Mak Subject: [PATCH v2 0/2] x86/kexec: Carry forward the boot DTB on kexec Date: Tue, 5 Aug 2025 14:15:25 -0700 Message-ID: <20250805211527.122367-1-makb@juniper.net> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PEPF00003445:EE_|SJ0PR05MB9373:EE_ X-MS-Office365-Filtering-Correlation-Id: 211e1718-aed3-480e-7b10-08ddd46549ec X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|82310400026|7416014|376014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?gP7d0YZ/+s2xzsJTUEi4I6CbiBshm562Jyyt1UIgM7enNB25Jz43VT2pkyLj?= =?us-ascii?Q?aCkR9iaBsOhht53RC3i0Nrt4irdMvN85Pfh5rNyZy05yOs2OvI57C3faiQDR?= =?us-ascii?Q?dcr8uE7yhy88v58VFo9gtcJr3mdm+I67wMEFkvuCwdZrMfK4G3un7ApBHexW?= =?us-ascii?Q?fm9PogZbJJRdvXmXHjdotk+wJInSFQyw+hjIhKKrWhdpkNNudI2sOA7vs5wb?= =?us-ascii?Q?lxOrl7Jy8rzr5eTgdp/0Nn/alS66vHdAMd9Mm/Z7A+tLhaYKg57LyH7aRqeF?= =?us-ascii?Q?DRPjd7z3ocs8vA4YMkj8MNIdwoc1OZIF44fLLZhmLQ7dZFVCRu7gmQxH9+Dg?= =?us-ascii?Q?oElLk2LoZ7bRitGai8f4Qct59rhdRHZvkeYxBeNmy1oMSMt7RRIeOloTiDSx?= =?us-ascii?Q?LrWEZNpS1qvuBWzx63RJWxNru8IPpxq5gGIbHZROanZZLSfvn0/xTR0vjFNW?= =?us-ascii?Q?JqIzCyv4KQqk7Uq5VxVxy5D8M+1gzlvZgpSsgrmykE7wMX8GqAm5HEgEX+PB?= =?us-ascii?Q?LHys/H/hrkG2GtH4RhlYHyGgMWNy52LEq7QQ5uwMjNTzvs88RnF/GkENK55W?= =?us-ascii?Q?3Sp7GKnJEKzk7k/lKx5rA05Hcm18KDO/W+V+9lAwKmSBSEmWo+k9OIf90Da7?= =?us-ascii?Q?/uRjYsnliZSpK8rQfPi2bJNtDNH+MtC0BIgmcye9wRIrlSvst3ZoTia6ocb6?= =?us-ascii?Q?nWoV1GK5agHNYjGKyT+ZFZuIfd8pqemv+SrlT7zCrAi8nxqClLMTzynVhf8G?= =?us-ascii?Q?WcPh99a3AcM0aEjIu5l8fSpc7M1ydW68bd1wwzlj5f6e4zWtftPljp9xbcME?= =?us-ascii?Q?i0qoAkhKkbT5BdlGuAye1aE0+dtOUPGPs0oR+o5Y7gYk21L0csCNAqhdXmkQ?= =?us-ascii?Q?ZJOt9ARRcc6m8NhRMnRG9zh5xxlGvx4JDir8kavt2/sXKc5rsPg9s24XeTbx?= =?us-ascii?Q?tHP1YIl42bXLm8n0Rj7LRIH9k+pchmLHkSYxcev8huKNRhldtS7nTfnXBXmP?= =?us-ascii?Q?n+KxalUXI1J9o6mXDupEx53ZjceYweBN13dl2I7WoEloec6IJ6sDmzpTBS57?= =?us-ascii?Q?Ak7C6gVuNEjX3H+XWUw3+Ik9oDmgcGgiZyvPUDvBJa8Ozgczqbp/h6+dZnOH?= =?us-ascii?Q?8qFfKWfoM4ZVS97iRy/hcBco+yTfPhJyxLCAmhJHyFSKudQTHuNqS/O1+gDZ?= =?us-ascii?Q?5Z7h11JeTJcG3YcOi+fbZ/jHrD1AAnX80kg2+UMtNm43TycwF3GpNRtwvegn?= =?us-ascii?Q?pH/tHibcyIJpsK61QgfFFKQ+9LqI92AjySc/7TGS7Qs/dnqlUx47H2bFrnr6?= =?us-ascii?Q?dc9IrwDz9jTpjORcsj4Y3wtiQ7ViPR9xfz89dl2T7e6TvfirqIWeaOYCCXs9?= =?us-ascii?Q?duZlX1sQ9bq7WEFsJBFf9QDUW5uvELXhe0RDidDuXtIlGIaha+FaJMO5bSpR?= =?us-ascii?Q?6mhSBYpK0lVE4mFdJuogSG+tbxEHOkcVBR707c1k2T9l8fsZvuapfW5aURqx?= =?us-ascii?Q?9gdWSLFh80574IV4LXnjDhGefIiSHyOmCDlx3egrCmg3E+2S3Q85Rru/FQ?= =?us-ascii?Q?=3D=3D?= X-Forefront-Antispam-Report: CIP:66.129.239.15;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:p-exchfe-eqx-02.jnpr.net;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(1800799024)(82310400026)(7416014)(376014)(921020);DIR:OUT;SFP:1102; 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I also added a patch to the series to add KEXEC_FILE_NO_CMA as a legal flag. I noticed that this was missing when I went to add my KEXEC_FILE_FORCE_DTB flag. Thanks, Brian Changes in v2: - Added a patch to add KEXEC_FILE_NO_CMA as a legal flag - Added a KEXEC_FILE_FORCE_DTB flag to enable carrying over the current boot's DTB on x86. - Modified the commit message to include more reasoning for the change. - Changed a pr_info print to a pr_debug print. Brian Mak (2): kexec: Add KEXEC_FILE_NO_CMA as a legal flag x86/kexec: Carry forward the boot DTB on kexec arch/x86/kernel/kexec-bzimage64.c | 47 +++++++++++++++++++++++++++++-- include/linux/kexec.h | 6 +++- include/uapi/linux/kexec.h | 4 +++ kernel/kexec_file.c | 1 + 4 files changed, 54 insertions(+), 4 deletions(-) base-commit: 35a813e010b99894bb4706c56c16a580bf7959c2 -- 2.25.1