lkml.org 
[lkml]   [2021]   [Jan]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/1] iommu/arm-smmu-v3: add support for BBML
From
Date


On 2021/1/27 10:01, Leizhen (ThunderTown) wrote:
>
>
> On 2021/1/26 18:12, Will Deacon wrote:
>> On Mon, Jan 25, 2021 at 08:23:40PM +0000, Robin Murphy wrote:
>>> Now we probably will need some degreee of BBML feature awareness for the
>>> sake of SVA if and when we start using it for CPU pagetables, but I still
>>> cannot see any need to consider it in io-pgtable.
>>
>> Agreed; I don't think this is something that io-pgtable should have to care
>> about.
Hi,

I have a question here :-).
If the old table is not live, then the break procedure seems unnecessary. Do I miss something?

Thanks,
Keqian

>
> Yes, the SVA works in stall mode, and the failed device access requests are not
> discarded.
>
> Let me look for examples. The BBML usage scenario was told by a former colleague.
>
>>
>> Will
>>
>> .
>>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> .
>

\
 
 \ /
  Last update: 2021-01-27 08:44    [W:0.141 / U:0.292 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site