linux-kernel - Re: [PATCH v2 05/14] iommufd: Return EOPNOTSUPP for failures due to driver bugs

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Message-ID: <20250616122801.GU1174925@nvidia.com>
Date: Mon, 16 Jun 2025 09:28:01 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Nicolin Chen <nicolinc@...dia.com>
Cc: kevin.tian@...el.com, will@...nel.org, robin.murphy@....com,
	joro@...tes.org, praan@...gle.com, yi.l.liu@...el.com,
	peterz@...radead.org, jsnitsel@...hat.com,
	linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
	baolu.lu@...ux.intel.com
Subject: Re: [PATCH v2 05/14] iommufd: Return EOPNOTSUPP for failures due to
 driver bugs

On Fri, Jun 13, 2025 at 11:35:17PM -0700, Nicolin Chen wrote:
> It's more accurate to report EOPNOTSUPP when an ioctl failed due to driver
> bug, since there is nothing wrong with the user space side.
> 
> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
> ---
>  drivers/iommu/iommufd/device.c       | 2 +-
>  drivers/iommu/iommufd/hw_pagetable.c | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)

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

Jason