Re: [PATCH v7 0/8] soc: ti: Add and use PVU on K3-AM65 for DMA isolation

["Li, Hua Qian" <HuaQian.Li@siemens.com>]

On Fri, 2025-04-18 at 14:04 -0500, Nishanth Menon wrote:
> On 11:34-20250418, Bjorn Helgaas wrote:
> > On Fri, Apr 18, 2025 at 08:43:24AM -0500, Nishanth Menon wrote:
> > > On 15:30-20250418, huaqian.li@siemens.com wrote:
> > > > 
> > > > Jan Kiszka (7):
> > > >   dt-bindings: soc: ti: Add AM65 peripheral virtualization unit
> > > >   dt-bindings: PCI: ti,am65: Extend for use with PVU
> > > >   soc: ti: Add IOMMU-like PVU driver
> > > >   PCI: keystone: Add support for PVU-based DMA isolation on
> > > > AM654
> > > >   arm64: dts: ti: k3-am65-main: Add PVU nodes
> > > >   arm64: dts: ti: k3-am65-main: Add VMAP registers to PCI root
> > > > complexes
> > > >   arm64: dts: ti: iot2050: Add overlay for DMA isolation for
> > > > devices
> > > >     behind PCI RC
> > > > 
> > > > Li Hua Qian (1):
> > > >   swiotlb: Make IO_TLB_SEGSIZE configurable
> > > 
> > > I see at least 3 or 4 maintainers needing to co-ordinate, gets
> > > complicated as I am not sure which maintainer needs to pick up
> > > what
> > > patches in what dependency order. This looks like a mixed bag.
> > > Can
> > > we split this patch into independent series for each maintainer
> > > with
> > > clear indication of dependencies that is spread around a couple
> > > of
> > > kernel windows (maybe dts comes in last?)
> > 
> > The keystone patch ("[4/8] PCI: keystone: Add support for PVU-based
> > DMA isolation on AM654") depends on interfaces added by "[3/8] soc:
> > ti: Add IOMMU-like PVU driver", so I can't really take 4/8 by
> > itself.
> > 
> > But I've acked 4/8, so it can be merged along with the rest of the
> > series.  I assumed the easiest would be via the drivers/soc/ti/
> > maintainer, i.e., you, Nisanth :)
> > 
> > Let me know if I can do anything.
> 
> Thanks Bjorn, the swiotlb probably is one of the first to go in, I
> guess.. I will let Li Hua/Jan suggest how they'd like to queue this.
> 
Hi Nisanth, 

Apologies for making this series more complicated, and thank you,
Bjorn, for the explanation. I will take patch 8 and submit it as a new
upstreaming series separately.


-- 
Hua Qian Li
Siemens AG
www.siemens.com