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acrn-kernel/arch/arm64/mm
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Will Deacon 27f5dd22af arm64: mm: Fix "rodata=on" when CONFIG_RODATA_FULL_DEFAULT_ENABLED=y 
[ Upstream commit acfa60dbe03802d6afd28401aa47801270e82021 ]

When CONFIG_RODATA_FULL_DEFAULT_ENABLED=y, passing "rodata=on" on the
kernel command-line (rather than "rodata=full") should turn off the
"full" behaviour, leaving writable linear aliases of read-only kernel
memory. Unfortunately, the option has no effect in this situation and
the only way to disable the "rodata=full" behaviour is to disable rodata
protection entirely by passing "rodata=off".

Fix this by parsing the "on" and "off" options in the arch code,
additionally enforcing that 'rodata_full' cannot be set without also
setting 'rodata_enabled', allowing us to simplify a couple of checks
in the process.

Fixes: 2e8cff0a0e ("arm64: fix rodata=full")
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20231117131422.29663-1-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-12-03 07:32:08 +01:00
..
Makefile
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cache.S arm64: mm: Remove assembly DMA cache maintenance wrappers 2022-07-05 13:06:31 +01:00
context.c arm64/sysreg: Standardise naming of ID_AA64MMFR0_EL1.ASIDBits 2022-09-09 10:59:02 +01:00
copypage.c arm64: Also reset KASAN tag if page is not PG_mte_tagged 2023-05-30 14:03:17 +01:00
dma-mapping.c Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()" 2022-12-06 17:30:39 +00:00
extable.c arm64: extable: cleanup redundant extable type EX_TYPE_FIXUP 2022-06-28 12:11:47 +01:00
fault.c arm64/mm: Convert to using lock_mm_and_find_vma() 2023-07-01 13:16:24 +02:00
flush.c mm: hugetlb_vmemmap: delete hugetlb_optimize_vmemmap_enabled() 2022-08-08 18:06:42 -07:00
hugetlbpage.c arm64: mm: use ptep_clear() instead of pte_clear() in clear_flush() 2023-09-13 09:42:34 +02:00
init.c arm64/sysreg: Add _EL1 into ID_AA64MMFR0_EL1 definition names 2022-09-09 10:59:02 +01:00
ioremap.c arm64: mm: Convert to GENERIC_IOREMAP 2022-06-27 12:22:31 +01:00
kasan_init.c arm64: mm: provide idmap pointer to cpu_replace_ttbr1() 2022-06-24 17:18:10 +01:00
mmap.c arm64/mm: move protection_map[] inside the platform 2022-07-17 17:14:37 -07:00
mmu.c mm,kfence: decouple kfence from page granularity mapping judgement 2023-12-03 07:32:08 +01:00
mteswap.c arm64: mte: Fix/clarify the PG_mte_tagged semantics 2023-03-11 13:55:44 +01:00
pageattr.c arm64: mm: Fix "rodata=on" when CONFIG_RODATA_FULL_DEFAULT_ENABLED=y 2023-12-03 07:32:08 +01:00
pgd.c
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physaddr.c
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proc.S arm64 updates for 6.1: 2022-10-06 11:51:49 -07:00
ptdump.c
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ptdump_debugfs.c
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trans_pgd-asm.S
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trans_pgd.c
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