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linux/arch/s390
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Heiko Carstens 0ee8425d0c s390/vmlinux.lds.S: Move ro_after_init section behind rodata section 
[ Upstream commit 75c10d5377 ]

The .data.rel.ro and .got section were added between the rodata and
ro_after_init data section, which adds an RW mapping in between all RO
mapping of the kernel image:

---[ Kernel Image Start ]---
0x000003ffe0000000-0x000003ffe0e00000        14M PMD RO X
0x000003ffe0e00000-0x000003ffe0ec7000       796K PTE RO X
0x000003ffe0ec7000-0x000003ffe0f00000       228K PTE RO NX
0x000003ffe0f00000-0x000003ffe1300000         4M PMD RO NX
0x000003ffe1300000-0x000003ffe1331000       196K PTE RO NX
0x000003ffe1331000-0x000003ffe13b3000       520K PTE RW NX <---
0x000003ffe13b3000-0x000003ffe13d5000       136K PTE RO NX
0x000003ffe13d5000-0x000003ffe1400000       172K PTE RW NX
0x000003ffe1400000-0x000003ffe1500000         1M PMD RW NX
0x000003ffe1500000-0x000003ffe1700000         2M PTE RW NX
0x000003ffe1700000-0x000003ffe1800000         1M PMD RW NX
0x000003ffe1800000-0x000003ffe187e000       504K PTE RW NX
---[ Kernel Image End ]---

Move the ro_after_init data section again right behind the rodata
section to prevent interleaving RO and RW mappings:

---[ Kernel Image Start ]---
0x000003ffe0000000-0x000003ffe0e00000        14M PMD RO X
0x000003ffe0e00000-0x000003ffe0ec7000       796K PTE RO X
0x000003ffe0ec7000-0x000003ffe0f00000       228K PTE RO NX
0x000003ffe0f00000-0x000003ffe1300000         4M PMD RO NX
0x000003ffe1300000-0x000003ffe1353000       332K PTE RO NX
0x000003ffe1353000-0x000003ffe1400000       692K PTE RW NX
0x000003ffe1400000-0x000003ffe1500000         1M PMD RW NX
0x000003ffe1500000-0x000003ffe1700000         2M PTE RW NX
0x000003ffe1700000-0x000003ffe1800000         1M PMD RW NX
0x000003ffe1800000-0x000003ffe187e000       504K PTE RW NX
---[ Kernel Image End ]---

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-09-12 11:10:24 +02:00
..
appldata s390/appldata: use struct_size() helper 2020-06-29 16:32:34 +02:00
boot s390/boot: Remove alt_stfle_fac_list from decompressor 2024-06-12 11:03:44 +02:00
configs s390/configs: add kasan.config addon config file 2022-11-08 19:32:32 +01:00
crypto crypto: s390/aes - Fix buffer overread in CTR mode 2024-01-31 16:16:58 -08:00
hypfs s390/hypfs: avoid error message under KVM 2022-08-15 17:19:51 +02:00
include s390/uv: Panic for set and remove shared access UVC errors 2024-08-29 17:30:16 +02:00
kernel s390/vmlinux.lds.S: Move ro_after_init section behind rodata section 2024-09-12 11:10:24 +02:00
kvm KVM: s390: fix LPSWEY handling 2024-07-11 12:47:11 +02:00
lib s390/uaccess: add missing earlyclobber annotations to __clear_user() 2023-04-06 12:10:55 +02:00
mm s390/mm: Fix clearing storage keys for huge pages 2024-05-17 11:55:58 +02:00
net s390/bpf: Emit a barrier for BPF_FETCH instructions 2024-06-12 11:03:19 +02:00
pci s390/pci: Allow allocation of more than 1 MSI interrupt 2024-08-03 08:49:52 +02:00
purgatory s390/purgatory: disable branch profiling 2023-06-28 11:12:38 +02:00
tools KVM: s390: Add facility 197 to the allow list 2022-07-13 15:25:25 +02:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig s390: always build relocatable kernel 2022-11-08 19:32:32 +01:00
Kconfig.debug s390/Kconfig.debug: fix indentation 2022-06-01 12:03:15 +02:00
Makefile s390/decompressor: fix misaligned symbol build error 2023-07-23 13:49:43 +02:00