From: Jacob Pan <jacob.pan@linux.microsoft.com>
To: linux-kernel@vger.kernel.org,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
Jason Gunthorpe <jgg@nvidia.com>,
Alex Williamson <alex.williamson@redhat.com>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Nicolin Chen <nicolinc@nvidia.com>,
"Tian, Kevin" <kevin.tian@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>
Cc: skhawaja@google.com, pasha.tatashin@soleen.com,
Jacob Pan <jacob.pan@linux.microsoft.com>,
Zhang Yu <zhangyu1@linux.microsoft.com>,
Jean Philippe-Brucker <jean-philippe@linaro.org>,
David Matlack <dmatlack@google.com>
Subject: [RFC 5/8] vfio: IOMMUFD relax requirement for noiommu mode
Date: Mon, 1 Dec 2025 09:30:09 -0800 [thread overview]
Message-ID: <20251201173012.18371-6-jacob.pan@linux.microsoft.com> (raw)
In-Reply-To: <20251201173012.18371-1-jacob.pan@linux.microsoft.com>
noiommu device only has auto domain, does not need to attach to other ioas.
Signed-off-by: Jacob Pan <jacob.pan@linux.microsoft.com>
---
drivers/vfio/vfio_main.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
index 38c8e9350a60..805d30b0b82f 100644
--- a/drivers/vfio/vfio_main.c
+++ b/drivers/vfio/vfio_main.c
@@ -317,9 +317,7 @@ static int __vfio_register_dev(struct vfio_device *device,
if (WARN_ON(IS_ENABLED(CONFIG_IOMMUFD) &&
(!device->ops->bind_iommufd ||
- !device->ops->unbind_iommufd ||
- !device->ops->attach_ioas ||
- !device->ops->detach_ioas)))
+ !device->ops->unbind_iommufd)))
return -EINVAL;
/*
--
2.34.1
next prev parent reply other threads:[~2025-12-01 17:30 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-01 17:30 [RFC 0/8] iommufd: Enable noiommu mode for cdev Jacob Pan
2025-12-01 17:30 ` [RFC 1/8] iommu: Make iommu_device_register_bus available beyond selftest Jacob Pan
2025-12-01 17:30 ` [RFC 2/8] iommu: Add a helper to check if any iommu device is registered Jacob Pan
2025-12-02 2:17 ` Baolu Lu
2025-12-03 0:06 ` Jacob Pan
2025-12-03 3:31 ` Baolu Lu
2025-12-03 22:28 ` Jacob Pan
2025-12-03 13:11 ` Jason Gunthorpe
2025-12-03 22:36 ` Jacob Pan
2025-12-04 10:53 ` Robin Murphy
2025-12-04 22:07 ` Jacob Pan
2025-12-12 4:02 ` Tian, Kevin
2025-12-12 19:51 ` Jacob Pan
2025-12-01 17:30 ` [RFC 3/8] iommufd: Add a mock page table format for noiommu mode Jacob Pan
2025-12-01 17:30 ` [RFC 4/8] iommu: Add a dummy driver " Jacob Pan
2025-12-01 17:30 ` Jacob Pan [this message]
2025-12-12 4:05 ` [RFC 5/8] vfio: IOMMUFD relax requirement " Tian, Kevin
2025-12-12 19:53 ` Jacob Pan
2025-12-01 17:30 ` [RFC 6/8] vfio: Rename and remove compat from noiommu set function Jacob Pan
2025-12-01 17:30 ` [RFC 7/8] iommu: Enable cdev noiommu mode under iommufd Jacob Pan
2025-12-01 17:30 ` [RFC 8/8] iommufd: Add an ioctl IOMMU_IOAS_GET_PA to query PA from IOVA Jacob Pan
2026-01-30 19:35 ` [RFC 0/8] iommufd: Enable noiommu mode for cdev Jason Gunthorpe
2026-02-06 22:50 ` Jacob Pan
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