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Tsirkin" , Jason Wang , Xuan Zhuo , =?UTF-8?q?Eugenio=20P=C3=A9rez?= , Eric Farman , Andrew Morton , Jonathan Corbet , Mario Casquero Subject: [PATCH v3 5/7] lib/Kconfig.debug: default STRICT_DEVMEM to "y" on s390 Date: Fri, 25 Oct 2024 16:14:50 +0200 Message-ID: <20241025141453.1210600-6-david@redhat.com> In-Reply-To: <20241025141453.1210600-1-david@redhat.com> References: <20241025141453.1210600-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Type: text/plain; charset="utf-8" virtio-mem currently depends on !DEVMEM | STRICT_DEVMEM. Let's default STRICT_DEVMEM to "y" just like we do for arm64 and x86. There could be ways in the future to filter access to virtio-mem device memory even without STRICT_DEVMEM, but for now let's just keep it simple. Tested-by: Mario Casquero Acked-by: Heiko Carstens Signed-off-by: David Hildenbrand --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7312ae7c3cc5..fcad505e7c8b 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1905,7 +1905,7 @@ config STRICT_DEVMEM bool "Filter access to /dev/mem" depends on MMU && DEVMEM depends on ARCH_HAS_DEVMEM_IS_ALLOWED || GENERIC_LIB_DEVMEM_IS_ALLOWED - default y if PPC || X86 || ARM64 + default y if PPC || X86 || ARM64 || S390 help If this option is disabled, you allow userspace (root) access to all of memory, including kernel and userspace memory. Accidental --=20 2.46.1