Messages in this thread | | | Subject | Re: [PATCH 1/1] iommu/arm-smmu-v3: add support for BBML | From | Keqian Zhu <> | Date | Wed, 27 Jan 2021 15:36:08 +0800 |
| |
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 > . >
| |