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

[Pranjal Shrivastava]

On Tue, Aug 25, 2026 at 05:14:54PM -0300, Jason Gunthorpe wrote:
> 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..
> 

Ack. That sounds interesting, I'll try it out! And sorry for the
whitespace issue, the --fix-inplace is notorious,

Thanks for sharing this!
- Praan