s390/vmlinux.lds.S: Move ro_after_init section behind rodata section
[ Upstream commit
75c10d5377d8821efafed32e4d72068d9c1f8ec0 ]
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>
projects / thirdparty / kernel / stable.git / commit
