linux-kernel - Re: [PATCH 11/12] iommufd: Remove unnecessary IOMMU_DEV_FEAT

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Message-ID: <20250218130607.GG3696814@ziepe.ca>
Date: Tue, 18 Feb 2025 09:06:07 -0400
From: Jason Gunthorpe <jgg@...pe.ca>
To: Baolu Lu <baolu.lu@...ux.intel.com>
Cc: Nicolin Chen <nicolinc@...dia.com>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
	Kevin Tian <kevin.tian@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Dave Jiang <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>,
	Zhangfei Gao <zhangfei.gao@...aro.org>,
	Zhou Wang <wangzhou1@...ilicon.com>, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 11/12] iommufd: Remove unnecessary IOMMU_DEV_FEAT_IOPF

On Sat, Feb 15, 2025 at 02:32:32PM +0800, Baolu Lu wrote:
> On 2/14/25 15:06, Nicolin Chen wrote:
> > On Fri, Feb 14, 2025 at 02:11:03PM +0800, Lu Baolu wrote:
> > > The iopf enablement has been moved to the iommu drivers. It is unnecessary
> > > for iommufd to handle iopf enablement. Remove the iopf enablement logic to
> > > avoid duplication.
> > > 
> > > Signed-off-by: Lu Baolu<baolu.lu@...ux.intel.com>
> > > ---
> > >   drivers/iommu/iommufd/device.c          |   1 -
> > >   drivers/iommu/iommufd/fault.c           | 111 ++++++------------------
> > >   drivers/iommu/iommufd/iommufd_private.h |   3 -
> > >   3 files changed, 28 insertions(+), 87 deletions(-)
> > This is in conflict with my fault patches that Jason just took
> > a couple days ago:
> > https://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd.git/log/?
> > h=for-next
> > 
> > I think it needs a rebase, perhaps on the branch mentioned here:
> > https://lore.kernel.org/linux-iommu/20250213150836.GC3754072@nvidia.com/
> 
> Yes, sure. I will rebase it in the next version to avoid the conflict.

That's troublesome, I think just leave it so Joerg can pick it up. We
can figure out what to do with the conflict later.

Jason