From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, linux-s390@vger.kernel.org,
virtualization@lists.linux.dev, linux-doc@vger.kernel.org,
kvm@vger.kernel.org, "David Hildenbrand" <david@redhat.com>,
"Heiko Carstens" <hca@linux.ibm.com>,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>,
"Christian Borntraeger" <borntraeger@linux.ibm.com>,
"Sven Schnelle" <svens@linux.ibm.com>,
"Thomas Huth" <thuth@redhat.com>,
"Cornelia Huck" <cohuck@redhat.com>,
"Janosch Frank" <frankja@linux.ibm.com>,
"Claudio Imbrenda" <imbrenda@linux.ibm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
"Xuan Zhuo" <xuanzhuo@linux.alibaba.com>,
"Eugenio Pérez" <eperezma@redhat.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Jonathan Corbet" <corbet@lwn.net>,
"Mario Casquero" <mcasquer@redhat.com>
Subject: [PATCH v2 6/7] lib/Kconfig.debug: default STRICT_DEVMEM to "y" on s390
Date: Mon, 14 Oct 2024 16:46:18 +0200 [thread overview]
Message-ID: <20241014144622.876731-7-david@redhat.com> (raw)
In-Reply-To: <20241014144622.876731-1-david@redhat.com>
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 <mcasquer@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
lib/Kconfig.debug | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 7315f643817a..e7a917540e2a 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
--
2.46.1
next prev parent reply other threads:[~2024-10-14 14:47 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-14 14:46 [PATCH v2 0/7] virtio-mem: s390 support David Hildenbrand
2024-10-14 14:46 ` [PATCH v2 1/7] s390/kdump: implement is_kdump_kernel() David Hildenbrand
2024-10-14 18:20 ` Heiko Carstens
2024-10-14 19:26 ` David Hildenbrand
2024-10-15 8:30 ` Heiko Carstens
2024-10-15 8:41 ` David Hildenbrand
2024-10-15 8:53 ` David Hildenbrand
2024-10-15 8:56 ` David Hildenbrand
2024-10-15 10:08 ` Heiko Carstens
2024-10-15 10:40 ` David Hildenbrand
2024-10-16 13:35 ` Alexander Egorenkov
2024-10-16 15:47 ` David Hildenbrand
2024-10-16 15:54 ` David Hildenbrand
2024-10-21 12:46 ` Alexander Egorenkov
2024-10-21 14:45 ` David Hildenbrand
2024-10-23 7:42 ` Heiko Carstens
2024-10-23 7:45 ` David Hildenbrand
2024-10-23 11:17 ` Alexander Egorenkov
2024-10-14 14:46 ` [PATCH v2 2/7] Documentation: s390-diag.rst: make diag500 a generic KVM hypercall David Hildenbrand
2024-10-14 18:04 ` Heiko Carstens
2024-10-14 19:35 ` David Hildenbrand
2024-10-15 8:12 ` Heiko Carstens
2024-10-15 8:16 ` David Hildenbrand
2024-10-15 8:21 ` Heiko Carstens
2024-10-15 8:32 ` David Hildenbrand
2024-10-15 8:46 ` Heiko Carstens
2024-10-15 8:48 ` David Hildenbrand
2024-10-14 14:46 ` [PATCH v2 3/7] Documentation: s390-diag.rst: document diag500(STORAGE LIMIT) subfunction David Hildenbrand
2024-10-14 14:46 ` [PATCH v2 4/7] s390/physmem_info: query diag500(STORAGE LIMIT) to support QEMU/KVM memory devices David Hildenbrand
2024-10-14 18:43 ` Heiko Carstens
2024-10-14 19:42 ` David Hildenbrand
2024-10-15 15:01 ` Eric Farman
2024-10-15 15:20 ` Heiko Carstens
2024-10-25 10:52 ` David Hildenbrand
2024-10-16 10:37 ` Halil Pasic
2024-10-17 7:36 ` Alexander Gordeev
2024-10-17 8:19 ` David Hildenbrand
2024-10-17 9:53 ` Alexander Gordeev
2024-10-17 10:00 ` David Hildenbrand
2024-10-17 12:07 ` David Hildenbrand
2024-10-17 14:32 ` Alexander Gordeev
2024-10-17 14:36 ` David Hildenbrand
2024-10-30 14:30 ` Alexander Gordeev
2024-10-30 14:33 ` Alexander Gordeev
2024-10-14 14:46 ` [PATCH v2 5/7] virtio-mem: s390 support David Hildenbrand
2024-10-14 18:48 ` Heiko Carstens
2024-10-14 19:16 ` David Hildenbrand
2024-10-15 8:37 ` Heiko Carstens
2024-10-21 6:33 ` Christian Borntraeger
2024-10-21 12:19 ` David Hildenbrand
2024-10-14 14:46 ` David Hildenbrand [this message]
2024-10-14 18:53 ` [PATCH v2 6/7] lib/Kconfig.debug: default STRICT_DEVMEM to "y" on s390 Heiko Carstens
2024-10-14 14:46 ` [PATCH v2 7/7] s390/sparsemem: reduce section size to 128 MiB David Hildenbrand
2024-10-14 17:53 ` Heiko Carstens
2024-10-14 19:47 ` David Hildenbrand
2024-10-14 18:56 ` [PATCH v2 0/7] virtio-mem: s390 support Heiko Carstens
2024-10-14 19:17 ` David Hildenbrand
2024-10-15 7:57 ` Claudio Imbrenda
2024-10-25 10:54 ` David Hildenbrand
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