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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2016-09-01 14:35:59 +0100 |
|---|---|---|
| committer | Nolen Johnson <johnsonnolen@gmail.com> | 2022-11-01 00:41:23 -0400 |
| commit | bcd9668da77f63723461bb22172656a99252414a (patch) | |
| tree | 21251f2f7a70902571b9f92453f787a5720ed361 /scripts/sign-file.c | |
| parent | c4ddd677f7e3431a0b469488f43c374d9adc7e18 (diff) | |
arm64: kernel: do not need to reset UAO on exception entry
Commit e19a6ee2460b ("arm64: kernel: Save and restore UAO and
addr_limit on exception entry") states that exception handler inherits
the original PSTATE.UAO value, so UAO needes to be reset
explicitly. However, ARM 8.2 Extension documentation says:
PSTATE.UAO is copied to SPSR_ELx.UAO and is then set to 0 on an
exception taken from AArch64 to AArch64
so hardware already does the right thing.
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Change-Id: I2c20b1082d7e096d089097946829550040778c2b
Diffstat (limited to 'scripts/sign-file.c')
0 files changed, 0 insertions, 0 deletions