[PATCH 0/2] arm64: tlb: Optimize ARM64_WORKAROUND_REPEAT_TLBI

[Will Deacon]

On Wed, 18 Feb 2026 16:43:46 +0000, Mark Rutland wrote:
> Some Arm partners have complained that the overhead of
> ARM64_WORKAROUND_REPEAT_TLBI is too large, and despite the relevant
> errata being categorized as "rare", they still want to use the
> workaround in some deployments.
> 
> For historical reasons, the current workaround is far stronger (and
> consequently far more expensive) than necessary. In part, the SDENs had
> somewhat misleading descriptions, which have recently been clarified:
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/2] arm64: tlb: Allow XZR argument to TLBI ops
      https://git.kernel.org/arm64/c/bfd9c931d19a
[2/2] arm64: tlb: Optimize ARM64_WORKAROUND_REPEAT_TLBI
      https://git.kernel.org/arm64/c/a8f78680ee6b

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev