Heiko Carstens 33bd8d153c s390: Keep inittext section writable ... There is no added security by making the inittext section non-writable, however it does split part of the kernel mapping into 4K mappings instead of 1M 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 ]--- Keep the inittext writable and enable instruction execution protection (aka noexec) later to prevent this. This also allows to use the generic free_initmem() implementation. ---[ 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 0x000003ffe1400000-0x000003ffe1800000 4M 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>		2024-07-31 16:30:20 +02:00
..
cmm.c	sysctl: treewide: constify the ctl_table argument of proc_handlers	2024-07-24 20:59:29 +02:00
dump_pagetables.c	s390/mm/ptdump: Improve sorting of markers	2024-07-31 16:30:20 +02:00
extable.c	s390: add support for DCACHE_WORD_ACCESS	2023-10-16 13:04:09 +02:00
extmem.c	s390/extmem: fix virtual vs physical address confusion	2024-02-09 13:58:16 +01:00
fault.c	s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception()	2024-07-17 14:30:30 +02:00
gmap.c	s390: Replace S390_lowcore by get_lowcore()	2024-06-18 17:01:33 +02:00
hugetlbpage.c	- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN	2024-07-21 17:15:46 -07:00
init.c	s390: Keep inittext section writable	2024-07-31 16:30:20 +02:00
maccess.c	s390/uaccess: Make s390_kernel_write() usable for decompressor	2024-07-23 16:02:31 +02:00
Makefile	s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support	2024-03-13 09:23:49 +01:00
mmap.c	treewide: use initializer for struct vm_unmapped_area_info	2024-04-25 20:56:27 -07:00
page-states.c	s390/cmma: rework no-dat handling	2023-11-05 22:34:58 +01:00
pageattr.c	s390: Replace S390_lowcore by get_lowcore()	2024-06-18 17:01:33 +02:00
pfault.c	s390/pfault: use consistent comment style	2023-07-29 14:57:18 +02:00
pgalloc.c	s390 updates for 6.11 merge window	2024-07-18 15:41:45 -07:00
pgtable.c	mm/treewide: replace pud_large() with pud_leaf()	2024-03-06 13:04:19 -08:00
physaddr.c	s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support	2024-03-13 09:23:49 +01:00
vmem.c	s390: Keep inittext section writable	2024-07-31 16:30:20 +02:00