Re: [RFC PATCH v4 0/6] arm64: tlb: add support for TTL feature

[Peter Zijlstra]

On Tue, Mar 24, 2020 at 09:45:28PM +0800, Zhenyu Ye wrote:
> 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.  This series provide support for this feature. 
> 
> Patch 1 and Patch 2 was provided by Marc on his NV series[1] patches,
> which detect the TTL feature and add __tlbi_level interface.

I realy hate how it makes vma->vm_flags more important for tlbi.