Laura Abbott 82034c23fc arm64: Make sure permission updates happen for pmd/pud ... Commit 15122ee2c5 ("arm64: Enforce BBM for huge IO/VMAP mappings") disallowed block mappings for ioremap since that code does not honor break-before-make. The same APIs are also used for permission updating though and the extra checks prevent the permission updates from happening, even though this should be permitted. This results in read-only permissions not being fully applied. Visibly, this can occasionaly be seen as a failure on the built in rodata test when the test data ends up in a section or as an odd RW gap on the page table dump. Fix this by using pgattr_change_is_safe instead of p*d_present for determining if the change is permitted. Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Peter Robinson <pbrobinson@gmail.com> Reported-by: Peter Robinson <pbrobinson@gmail.com> Fixes: 15122ee2c5 ("arm64: Enforce BBM for huge IO/VMAP mappings") Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2018-05-24 11:19:31 +01:00
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Makefile	…
cache.S	arm64: Add support for new control bits CTR_EL0.DIC and CTR_EL0.IDC	2018-03-09 13:57:57 +00:00
context.c	…
copypage.c	…
dma-mapping.c	Revert "arm64: Revert L1_CACHE_SHIFT back to 6 (64-byte cache line size)"	2018-03-27 12:04:51 +01:00
dump.c	arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables	2018-02-16 18:13:57 +00:00
extable.c	…
fault.c	arm64: fault: Don't leak data in ESR context for user fault on kernel VA	2018-05-22 17:14:20 +01:00
flush.c	arm64: mm: drop addr parameter from sync icache and dcache	2018-04-24 09:23:00 +01:00
hugetlbpage.c	arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables	2018-02-16 18:13:57 +00:00
init.c	arm64: To remove initrd reserved area entry from memblock	2018-05-01 10:19:30 +01:00
ioremap.c	…
kasan_init.c	arm64: kasan: avoid pfn_to_nid() before page array is initialized	2018-04-17 16:16:59 +01:00
mmap.c	exec: pass stack rlimit into mm layout functions	2018-04-11 10:28:37 -07:00
mmu.c	arm64: Make sure permission updates happen for pmd/pud	2018-05-24 11:19:31 +01:00
numa.c	…
pageattr.c	arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables	2018-02-16 18:13:57 +00:00
pgd.c	…
physaddr.c	…
proc.S	arm64: Delay enabling hardware DBM feature	2018-03-26 18:01:44 +01:00
ptdump_debugfs.c	…