Re: [PATCH v1 1/6] arm64: Detect the ARMv8.4 TTL feature

Christoph Hellwig
2020-04-21T16:54:07Z

On Fri, Apr 03, 2020 at 05:00:43PM +0800, Zhenyu Ye wrote:
> From: Marc Zyngier <maz@kernel.org>
>
> In order to reduce the cost of TLB invalidation, the ARMv8.4 TTL
> feature allows TLBs to be issued with a level allowing for quicker
> invalidation.

What does "issued with a level" mean?