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From: Nicolin Chen <nicolinc@nvidia.com>
To: <jgg@nvidia.com>, <will@kernel.org>, <robin.murphy@arm.com>
Cc: <joro@8bytes.org>, <jean-philippe@linaro.org>,
	<miko.lenczewski@arm.com>, <balbirs@nvidia.com>,
	<peterz@infradead.org>, <smostafa@google.com>,
	<kevin.tian@intel.com>, <praan@google.com>,
	<linux-arm-kernel@lists.infradead.org>, <iommu@lists.linux.dev>,
	<linux-kernel@vger.kernel.org>, <patches@lists.linux.dev>
Subject: Re: [PATCH rfcv2 1/8] iommu/arm-smmu-v3: Clear cmds->num after arm_smmu_cmdq_batch_submit
Date: Tue, 9 Sep 2025 19:56:46 -0700	[thread overview]
Message-ID: <aMDo7vljVeeWWzRE@Asurada-Nvidia> (raw)
In-Reply-To: <2f7f5fff38d43221fd60139323d23b258e34cf8d.1757373449.git.nicolinc@nvidia.com>

On Mon, Sep 08, 2025 at 04:26:55PM -0700, Nicolin Chen wrote:
> None of the callers of arm_smmu_cmdq_batch_submit() cares about the batch
> after a submission. So, it'll be certainly safe to nuke the cmds->num, at
> least upon a successful one. This will ease a bit a wrapper function, for
> the new arm_smmu_invs structure.

This was added when arm_smmu_cmdq_batch_submit() was needed by a
new arm_smmu_invs helper that used it at a few places. But after
a few rounds of rework, I found that there is only one call now.

I will drop this patch.

Thanks
Nicolin


  parent reply	other threads:[~2025-09-10  2:57 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-08 23:26 [PATCH rfcv2 0/8] iommu/arm-smmu-v3: Introduce an RCU-protected invalidation array Nicolin Chen
2025-09-08 23:26 ` [PATCH rfcv2 1/8] iommu/arm-smmu-v3: Clear cmds->num after arm_smmu_cmdq_batch_submit Nicolin Chen
2025-09-09  3:16   ` Balbir Singh
2025-09-09  5:42     ` Nicolin Chen
2025-09-09 22:49       ` Balbir Singh
2025-09-10  2:03         ` Nicolin Chen
2025-09-10  2:56   ` Nicolin Chen [this message]
2025-09-08 23:26 ` [PATCH rfcv2 2/8] iommu/arm-smmu-v3: Explicitly set smmu_domain->stage for SVA Nicolin Chen
2025-09-09  3:25   ` Balbir Singh
2025-09-09 22:31   ` Balbir Singh
2025-09-10  2:06     ` Nicolin Chen
2025-09-24 21:07   ` Jason Gunthorpe
2025-09-08 23:26 ` [PATCH rfcv2 3/8] iommu/arm-smmu-v3: Add an inline arm_smmu_domain_free() Nicolin Chen
2025-09-24 21:08   ` Jason Gunthorpe
2025-09-08 23:26 ` [PATCH rfcv2 4/8] iommu/arm-smmu-v3: Introduce a per-domain arm_smmu_invs array Nicolin Chen
2025-09-09 13:01   ` kernel test robot
2025-09-20  0:26   ` Nicolin Chen
2025-09-24 21:29   ` Jason Gunthorpe
2025-09-29 18:52     ` Nicolin Chen
2025-09-30 12:13       ` Jason Gunthorpe
2025-09-08 23:26 ` [PATCH rfcv2 5/8] iommu/arm-smmu-v3: Pre-allocate a per-master invalidation array Nicolin Chen
2025-09-24 21:32   ` Jason Gunthorpe
2025-09-29 19:11     ` Nicolin Chen
2025-09-30 11:55       ` Jason Gunthorpe
2025-09-08 23:27 ` [PATCH rfcv2 6/8] iommu/arm-smmu-v3: Populate smmu_domain->invs when attaching masters Nicolin Chen
2025-09-24 21:42   ` Jason Gunthorpe
2025-09-29 20:52     ` Nicolin Chen
2025-09-30 12:12       ` Jason Gunthorpe
2025-09-30 20:19         ` Nicolin Chen
2025-10-01 16:25           ` Jason Gunthorpe
2025-10-01 17:16             ` Nicolin Chen
2025-09-08 23:27 ` [PATCH rfcv2 7/8] iommu/arm-smmu-v3: Add arm_smmu_invs based arm_smmu_domain_inv_range() Nicolin Chen
2025-09-24 21:56   ` Jason Gunthorpe
2025-09-29 21:00     ` Nicolin Chen
2025-09-08 23:27 ` [PATCH rfcv2 8/8] iommu/arm-smmu-v3: Perform per-domain invalidations using arm_smmu_invs Nicolin Chen

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