[PATCH v9 00/12] iommu/arm-smmu-v3: Implement Runtime/System Sleep ops
Jason Gunthorpe
jgg at nvidia.com
Tue Aug 25 06:33:42 PDT 2026
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?
Jason
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