arm64: cpufeature: Add FEAT_LSUI

Browse source

Since Armv9.6, FEAT_LSUI introduces atomic instructions that allow
privileged code to access user memory without clearing the PSTATE.PAN
bit. Add CPU feature detection for FEAT_LSUI.

Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
[catalin.marinas@arm.com: Remove commit log references to SW_PAN]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

This commit is contained in:

Yeoreum Yun 2026-03-14 17:51:26 +00:00 • committed by Catalin Marinas

parent 1f318b96cc

commit 7181f718cb

3 changed files with 13 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/arm64/include/asm/cpucaps.h

View file

10

arch/arm64/kernel/cpufeature.c

View file

1

arch/arm64/tools/cpucaps

View file