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| author | James Morse <james.morse@arm.com> | 2016-06-20 18:28:01 +0100 |
|---|---|---|
| committer | Sami Tolvanen <samitolvanen@google.com> | 2016-09-29 10:52:56 -0700 |
| commit | 4caec81662608819e904586b172abc85945b4d65 (patch) | |
| tree | ee485b28f313b89099b7090c95568b36817242f7 /fs/jbd2/commit.c | |
| parent | 76440ecb4dfc5f76582199a32b6c33ee9f0aa221 (diff) | |
BACKPORT: 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>
Change-Id: Iab453201c6e08bc6e22500b7c5570dd0fe2d1b74
(cherry picked from commit e19a6ee2460bdd0d0055a6029383422773f9999a)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Diffstat (limited to 'fs/jbd2/commit.c')
0 files changed, 0 insertions, 0 deletions