[PATCH v9 00/12] iommu/arm-smmu-v3: Implement Runtime/System Sleep ops

[Jason Gunthorpe]

On Tue, Aug 25, 2026 at 06:50:12PM +0000, Pranjal Shrivastava wrote:
> On Tue, Aug 25, 2026 at 10:33:42AM -0300, Jason Gunthorpe wrote:
> > On Tue, Jul 28, 2026 at 09:09:16PM +0000, Pranjal Shrivastava wrote:
> > 
> > > [v9]
> > >  - Replaced atomic_fetch_or_relaxed() with atomic_fetch_or() for
> > >    correct ordering while asserting the STOP_FLAG
> > >  - Moved arm_smmu_drain_queues() after the cmdq->lock wait loop in
> > >    runtime_suspend() as per feedback in v8.
> > >  - Refactored suspend sequence to use arm_smmu_disable_irqs() and
> > >    synchronize_irq() for safe GERROR handling.
> > >  - Fixed an off-by-one error in suspend polling timeouts.
> > >  - Dropped arm_smmu_cmdq_can_elide() check from inv_range
> > >  - Renamed arm_smmu_cmdq_can_elide() to arm_smmu_is_active().
> > >  - Removed redundant bitwise masking from owner_prod reads.
> > >  - Added comments to explain locking, gating and elision better.
> > >  - Added comments to explain secondary cmdq draining and gating.
> > >  - Rebased on arm/smmu/updates
> > 
> > There are alot of scary looking sashiko remarks, are you planning to
> > resend this with some of them addressed?
> > 
> 
> Yes, I was first hoping to discuss them on the list! Thanks a lot for
> initiating that discussion :) 
> 
> [BTW, I'm interested to know if you used some tool to pull in sashiko
> feedback in your replies, such a tool seems helpful!]

I have been testing 'b4 review tui' to help my workflow. I have too
many patches to review and I'm trying to move them all into b4 and out
of my scattered mail boxes.

If you setup sashiko.dev integration:

[b4]
        sashiko-url = https://sashiko.dev

Then when you load a series it just automagically shows the sashiko
stuff (press f to expand them) and you can easially quote them when
replying.

It can be a bit rough to ge there though, you have to get a series
applied to make it to that screen, so eg, the whitespace damage here
made that a pain.

However.. I had AI make an AI instruction for another AI to use AI to
to automagically fix git am conflicts to get *something* so I can use
the tool..

But I like that the patches end up applied on a check out branch and I
can poke around with my editor too..

Jason