linux-kernel - Re: [PATCH v11 6/9] iommu/arm-smmu-v3: Add ARM_SMMU_OPT_SECONDARY_CMDQ_CS_NONE

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Message-ID: <20240814173129.GW2032816@nvidia.com>
Date: Wed, 14 Aug 2024 14:31:29 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Nicolin Chen <nicolinc@...dia.com>
Cc: will@...nel.org, robin.murphy@....com, joro@...tes.org,
	thierry.reding@...il.com, vdumpa@...dia.com, jonathanh@...dia.com,
	linux-kernel@...r.kernel.org, iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH v11 6/9] iommu/arm-smmu-v3: Add
 ARM_SMMU_OPT_SECONDARY_CMDQ_CS_NONE_ONLY

On Tue, Aug 06, 2024 at 07:11:51PM -0700, Nicolin Chen wrote:
> The CMDQV extension in NVIDIA Tegra241 SoC only supports CS_NONE in the
> CS field of CMD_SYNC. Add a new SMMU option to accommodate that.
> 
> Suggested-by: Will Deacon <will@...nel.org>
> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 17 ++++++++++++++++-
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h |  9 +++++----
>  2 files changed, 21 insertions(+), 5 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason