[lkml]   [2020]   [Mar]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC PATCH v1 0/3] arm64: tlb: add support for TTL field

On 2020-03-11 02:53, Zhenyu Ye wrote:
> ARMv8.4-TTL provides the TTL field in tlbi instruction to indicate
> the level of translation table walk holding the leaf entry for the
> address that is being invalidated. Hardware can use this information
> to determine if there was a risk of splintering.
> This set of patches adds TTL field to __TLBI_ADDR, and uses
> Architecture-specific MM context to pass the TTL value to tlb
> interface.
> The default value of TTL is 0, which will not have any impact on the
> TLB maintenance instructions. The last patch trys to use TTL field in
> some obviously tlb-flush interface.

I have already posted some support for ARMv8.4-TTL as part of my NV
series [1],
patches 62, 67, 68 and 69. This only deals with Stage-2 translation so
If you intend to add Stage-1, please build on top of what I have already
(I can extract the patches on a separate branch if you want).



Jazz is not dead. It just smells funny...

 \ /
  Last update: 2020-03-11 10:17    [W:0.068 / U:0.972 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site