diff options
| author | James Morse <james.morse@arm.com> | 2016-06-20 18:28:01 +0100 |
|---|---|---|
| committer | Prasad Sodagudi <psodagud@codeaurora.org> | 2017-01-25 18:42:39 -0800 |
| commit | 76e9e5bbd9122e10e028585c6fac95a5e09cf9e6 (patch) | |
| tree | cb318b1d858b2b43c78b0858e847d59cf108ad4c /kernel/stacktrace.c | |
| parent | 314869eb56763d34f91d5483b0d510267894fadd (diff) | |
arm64: kernel: Save and restore UAO and addr_limit on exception entry
commit e19a6ee2460bdd0d0055a6029383422773f9999a upstream.
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.
Change-Id: Iaef0dfaa335bd665b15718a2f1bba775ffc18a11
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: e19a6ee2460bdd0d0055a6029383422773f9999a
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[psodagud@codeaurora.org bring in changes missed
in commit a5a095803c2469cd3d1fc5a11acc1a8150b7c9f4]
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Diffstat (limited to 'kernel/stacktrace.c')
0 files changed, 0 insertions, 0 deletions