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linux/arch/s390
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Heiko Carstens fc9fabeee1 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 11:11:38 +02:00
..
appldata sysctl: Add size to register_sysctl 2023-08-15 15:26:17 -07:00
boot s390/boot: Remove alt_stfle_fac_list from decompressor 2024-06-12 11:12:33 +02:00
configs cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-20 17:01:51 +01:00
crypto crypto: s390/aes - Fix buffer overread in CTR mode 2024-01-31 16:18:50 -08:00
hypfs s390 updates for 6.6 merge window 2023-08-28 17:22:39 -07:00
include s390/uv: Panic for set and remove shared access UVC errors 2024-08-29 17:33:17 +02:00
kernel s390/vmlinux.lds.S: Move ro_after_init section behind rodata section 2024-09-12 11:11:38 +02:00
kvm KVM: s390: fix validity interception issue when gisa is switched off 2024-08-29 17:33:12 +02:00
lib s390: replace #include <asm/export.h> with #include <linux/export.h> 2023-08-09 15:20:50 +02:00
mm s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception() 2024-08-03 08:54:34 +02:00
net Revert "bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()" 2024-07-09 11:44:29 +02:00
pci s390/pci: Allow allocation of more than 1 MSI interrupt 2024-08-03 08:54:41 +02:00
purgatory s390 updates for 6.5 merge window part 2 2023-07-06 13:18:30 -07:00
tools KVM: s390: Add facility 197 to the allow list 2022-07-13 15:25:25 +02:00
Kbuild - An extensive rework of kexec and crash Kconfig from Eric DeVolder 2023-08-29 14:53:51 -07:00
Kconfig kexec: fix KEXEC_FILE dependencies 2024-01-05 15:19:41 +01:00
Kconfig.debug s390/Kconfig.debug: fix indentation 2022-06-01 12:03:15 +02:00
Makefile kbuild: unify vdso_install rules 2024-06-12 11:12:32 +02:00