diff options
| author | Will Deacon <will@kernel.org> | 2026-03-13 12:32:19 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2026-03-13 17:17:58 +0000 |
| commit | 3ce8f5860ff478d23af87bd459e76e466b483af3 (patch) | |
| tree | 0f2aecbeb87f2a9f5ca29f1beb9af2bb4580e26d /rust/kernel/ptr/git@git.tavy.me:linux.git | |
| parent | 6712fcde003f780d6241d755a0fa41ff4739b9a4 (diff) | |
arm64: scs: Remove redundant save/restore of SCS SP on entry to/from EL0
When returning to userspace, the SCS is empty and so the SCS SP just
points to the base address of the SCS page.
Rather than saving and restoring this address in the current task, we
can simply restore the SCS SP to point at the base of the stack on entry
to EL1 from EL0.
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'rust/kernel/ptr/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions