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[114.145.28.12]) by smtp.googlemail.com with ESMTPSA id d9443c01a7336-29b5b1387e3sm22381035ad.24.2025.11.20.02.39.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Nov 2025 02:39:13 -0800 (PST) From: Daniel Palmer To: geert@linux-m68k.org, schmitzmic@gmail.com, gerg@kernel.org, linux-m68k@lists.linux-m68k.org Cc: linux-kernel@vger.kernel.org, Daniel Palmer Subject: [PATCH v2 0/2] kernel memory protection for m68k, 030 users too! Date: Thu, 20 Nov 2025 19:38:52 +0900 Message-ID: <20251120103854.1630306-1-daniel@thingy.jp> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This implements kernel memory protection for m68k. Changes since v1: - Add a patch to split the early termination that the tail of the ro data is on 020/030 so that we can get at the juicy pages on the inside. - Since __ex_table is RO after init we can just mark from the start of the kernel to the end of the ro data in one pass so do that. - While setting the WP bit if we find that we'd be marking too much memory, warn and abort. Daniel Palmer (2): m68k: mm: motorola: Split the early term containing the end of the RO region m68k: Implement kernel memory protection arch/m68k/Kconfig | 1 + arch/m68k/mm/init.c | 73 +++++++++++++++++++++++++++++++++++++++++ arch/m68k/mm/motorola.c | 47 ++++++++++++++++++++------ 3 files changed, 111 insertions(+), 10 deletions(-) -- 2.51.0