diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2020-12-02 13:15:57 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-12-02 19:49:11 +0000 |
| commit | 7cf283c7bd6260ae43a74cd213f5ec9d665a19b5 (patch) | |
| tree | 5545af2e5ab25dfc021e79ab6ab140a7d7ad4b4f /drivers/firmware/psci/psci.c | |
| parent | b5a5a01d8e9a44ecb18dc31d471233cad2f88291 (diff) | |
arm64: uaccess: remove redundant PAN toggling
Some code (e.g. futex) needs to make privileged accesses to userspace
memory, and uses uaccess_{enable,disable}_privileged() in order to
permit this. All other uaccess primitives use LDTR/STTR, and never need
to toggle PAN.
Remove the redundant PAN toggling.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20201202131558.39270-12-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/firmware/psci/psci.c')
0 files changed, 0 insertions, 0 deletions