diff options
| author | Will Deacon <will.deacon@arm.com> | 2018-06-19 14:08:24 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-06 16:47:05 +0000 |
| commit | 8cb3451b1f240ec4d36a9bfcd39cb6d59769a5b3 (patch) | |
| tree | eb87a7a7cffb6f227d617b74170b76c9f0ea2dcf /arch/arm64/kernel/entry.S | |
| parent | 679db70801da9fda91d26caf13bf5b5ccc74e8e8 (diff) | |
arm64: entry: Remove confusing comment
The comment about SYS_MEMBARRIER_SYNC_CORE relying on ERET being
context-synchronizing is confusing and misplaced with kpti. Given that
this is already documented under Documentation/ (see arch-support.txt
for membarrier), remove the comment altogether.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/entry.S')
| -rw-r--r-- | arch/arm64/kernel/entry.S | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index a7fc77ab4a0a..c7d050207e53 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -344,10 +344,6 @@ alternative_else_nop_endif ldp x28, x29, [sp, #16 * 14] ldr lr, [sp, #S_LR] add sp, sp, #S_FRAME_SIZE // restore sp - /* - * ARCH_HAS_MEMBARRIER_SYNC_CORE rely on eret context synchronization - * when returning from IPI handler, and when returning to user-space. - */ .if \el == 0 alternative_insn eret, nop, ARM64_UNMAP_KERNEL_AT_EL0 |