Subject: Re: [PATCH v2 1/6] arm64: Detect the ARMv8.4 TTL feature

From: Catalin Marinas <[email-masked]>
Date: Fri, 22 May 2020 16:50:02 +0100

On Thu, Apr 23, 2020 at 09:56:51PM +0800, Zhenyu Ye wrote:
> From: Marc Zyngier <[email-masked]>
> 
> 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.
> 
> The TTL field indicates the level of page table walk
> holding the leaf entry for the address being invalidated.
> 
> Let's detect the feature for now. Further patches will implement
> its actual usage.
> 
> Signed-off-by: Marc Zyngier <[email-masked]>
> Signed-off-by: Zhenyu Ye <[email-masked]>

Reviewed-by: Catalin Marinas <[email-masked]>

_______________________________________________
linux-arm-kernel mailing list
[email-masked]
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel