[PATCH v5 1/3] iommu/arm-smmu-v3: Factor out CMDQ batch force-sync conditions

[Ashish Mhetre]

On 7/10/2026 9:58 AM, Nicolin Chen wrote:
> On Thu, Jul 09, 2026 at 09:56:07AM +0000, Ashish Mhetre wrote:
>> From: Nicolin Chen <nicolinc at nvidia.com>
>>
>> arm_smmu_cmdq_batch_add_cmd_p() carries two distinct reasons for
>> flushing the current batch with a CMD_SYNC before appending the
>> new command:
>>
>>    - The batch's pre-assigned cmdq does not support the new command.
>>    - The Arm erratum 2812531 workaround (ARM_SMMU_OPT_CMDQ_FORCE_SYNC)
>>      forces a SYNC at one entry before the batch is full.
>>
>> Lift those checks into a new arm_smmu_cmdq_batch_force_sync() helper
>> so that adding another force-sync condition becomes a one-line
>> addition. No functional change.
> Patch is fine, but you're missing the cover-letter and changelogs.
>
> Nicolin

I had sent out the cover-letter along with change logs.
The sequence got messed up while sending. Here's the cover letter.
https://lore.kernel.org/linux-tegra/20260709095613.831769-4-amhetre@nvidia.com/T/#u 


I will fix this in next version.

Thanks,
Ashish Mhetre