linux/arch/arm64/mm
James Morse e19a6ee246 arm64: kernel: Save and restore UAO and addr_limit on exception entry
If we take an exception while at EL1, the exception handler inherits
the original context's addr_limit and PSTATE.UAO values. To be consistent
always reset addr_limit and PSTATE.UAO on (re-)entry to EL1. This
prevents accidental re-use of the original context's addr_limit.

Based on a similar patch for arm from Russell King.

Cc: <stable@vger.kernel.org> # 4.6-
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-07-07 15:55:37 +01:00
..
cache.S arm64: Fold proc-macros.S into assembler.h 2016-04-28 12:05:45 +01:00
context.c arm64: update ASID limit 2016-06-21 20:10:18 +01:00
copypage.c arm64: Defer dcache flush in __cpu_copy_user_page 2015-12-17 11:07:13 +00:00
dma-mapping.c IOMMU Updates for Linux v4.7 2016-05-19 17:07:04 -07:00
dump.c arm64: mm: dump: log span level 2016-06-03 10:16:22 +01:00
extable.c arm64: switch to relative exception tables 2016-02-24 14:57:26 +00:00
fault.c arm64: kernel: Save and restore UAO and addr_limit on exception entry 2016-07-07 15:55:37 +01:00
flush.c arm64: mm: remove page_mapping check in __sync_icache_dcache 2016-06-21 20:10:18 +01:00
hugetlbpage.c Revert "arm64: hugetlb: partial revert of 66b3923a1a0f" 2016-05-31 11:00:09 +01:00
init.c arm64: mm: Show bss segment in kernel memory layout 2016-04-19 17:03:31 +01:00
ioremap.c arm64: add ioremap physical address information 2015-01-23 15:29:06 +00:00
kasan_init.c arm64: kasan: Fix zero shadow mapping overriding kernel image shadow 2016-03-11 11:03:35 +00:00
Makefile arm64, numa: Add NUMA support for arm64 platforms. 2016-04-15 18:06:09 +01:00
mm.h arm64: Move unflatten_device_tree() call earlier. 2016-04-15 18:06:08 +01:00
mmap.c arm64: mm: remove unnecessary EXPORT_SYMBOL_GPL 2016-05-05 09:49:38 +01:00
mmu.c arm64: Move unflatten_device_tree() call earlier. 2016-04-15 18:06:08 +01:00
numa.c arm64, numa: Add NUMA support for arm64 platforms. 2016-04-15 18:06:09 +01:00
pageattr.c arm64: Add support for ARCH_SUPPORTS_DEBUG_PAGEALLOC 2016-02-16 15:40:30 +00:00
pgd.c arm64: mm: move pgd_cache initialisation to pgtable_cache_init 2016-01-05 15:43:10 +00:00
proc.S arm64: Change cpu_resume() to enable mmu early then access sleep_sp by va 2016-04-28 12:05:46 +01:00