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linux/arch/powerpc/mm
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Russell Currey 453d87f6a8 powerpc/mm: Warn if W+X pages found on boot 
Implement code to walk all pages and warn if any are found to be both
writable and executable.  Depends on STRICT_KERNEL_RWX enabled, and is
behind the DEBUG_WX config option.

This only runs on boot and has no runtime performance implications.

Very heavily influenced (and in some cases copied verbatim) from the
ARM64 code written by Laura Abbott (thanks!), since our ptdump
infrastructure is similar.

Signed-off-by: Russell Currey <ruscur@russell.cc>
[mpe: Fixup build error when disabled]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-05-03 02:54:45 +10:00
..
book3s32 powerpc/mm: print hash info in a helper 2019-05-03 01:20:26 +10:00
book3s64 powerpc/mm: print hash info in a helper 2019-05-03 01:20:26 +10:00
kasan powerpc/32s: map kasan zero shadow with PAGE_READONLY instead of PAGE_KERNEL_RO 2019-05-03 01:20:26 +10:00
nohash powerpc/book3e: move early_alloc_pgtable() to init section 2019-05-03 01:20:24 +10:00
ptdump powerpc/mm: Warn if W+X pages found on boot 2019-05-03 02:54:45 +10:00
copro_fault.c powerpc/mm/hash: Rename KERNEL_REGION_ID to LINEAR_MAP_REGION_ID 2019-04-21 23:12:40 +10:00
dma-noncoherent.c powerpc/mm: change #include "mmu_decl.h" to <mm/mmu_decl.h> 2019-05-02 21:18:58 +10:00
drmem.c powerpc/pseries: Track LMB nid instead of using device tree 2019-04-29 22:27:16 +10:00
fault.c powerpc/mm: Detect bad KUAP faults 2019-04-21 23:06:04 +10:00
highmem.c powerpc/highmem: Change BUG_ON() to WARN_ON() 2019-04-20 22:02:11 +10:00
hugetlbpage.c powerpc/mm: cleanup remaining ifdef mess in hugetlbpage.c 2019-05-03 01:20:24 +10:00
init_32.c powerpc/32: Add KASAN support 2019-05-03 01:20:26 +10:00
init_64.c powerpc/mm: change #include "mmu_decl.h" to <mm/mmu_decl.h> 2019-05-02 21:18:58 +10:00
init-common.c powerpc/64: Setup KUP on secondary CPUs 2019-04-21 23:05:59 +10:00
Makefile powerpc/32: Add KASAN support 2019-05-03 01:20:26 +10:00
mem.c powerpc/32: prepare shadow area for KASAN 2019-05-03 01:20:26 +10:00
mmap.c exec: pass stack rlimit into mm layout functions 2018-04-11 10:28:37 -07:00
mmu_context.c powerpc/mm: convert Book3E 64 to pte_fragment 2019-05-03 01:20:24 +10:00
mmu_decl.h powerpc/mm: print hash info in a helper 2019-05-03 01:20:26 +10:00
numa.c powerpc/mm: Move book3s64 specifics in subdirectory mm/book3s64 2019-05-03 01:18:38 +10:00
pgtable_32.c powerpc/mm: Warn if W+X pages found on boot 2019-05-03 02:54:45 +10:00
pgtable_64.c powerpc/mm: Warn if W+X pages found on boot 2019-05-03 02:54:45 +10:00
pgtable-frag.c mm: treewide: remove unused address argument from pte_alloc functions 2019-01-04 13:13:47 -08:00
pgtable.c powerpc/mm: flatten function __find_linux_pte() step 3 2019-05-03 01:20:24 +10:00
slice.c powerpc/mm: define subarch SLB_ADDR_LIMIT_DEFAULT 2019-05-03 01:20:23 +10:00