[RFC 7/7] iommufd: Skip the CACHE_COHERENCY and iommu group check
From: Cindy Lu <hidden>
Date: 2023-09-23 17:07:35
Also in:
lkml
Subsystem:
iommu subsystem, iommufd, the rest · Maintainers:
Joerg Roedel, Will Deacon, Jason Gunthorpe, Kevin Tian, Linus Torvalds
This is just the work arround for vdpa, I Will fix these problems in the next version. Skip these 2 checks: 1.IOMMU_CAP_CACHE_COHERENCY check 2.iommu_group_get check Signed-off-by: Cindy Lu <redacted> --- drivers/iommu/iommufd/device.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c
index f7cb353fd9c7..0224d751f503 100644
--- a/drivers/iommu/iommufd/device.c
+++ b/drivers/iommu/iommufd/device.c@@ -71,8 +71,8 @@ struct iommufd_device *iommufd_device_bind(struct iommufd_ctx *ictx, * to restore cache coherency. */ if (!device_iommu_capable(dev, IOMMU_CAP_CACHE_COHERENCY)) - return ERR_PTR(-EINVAL); - + //return ERR_PTR(-EINVAL); +#if 0 group = iommu_group_get(dev); if (!group) return ERR_PTR(-ENODEV);
@@ -80,7 +80,7 @@ struct iommufd_device *iommufd_device_bind(struct iommufd_ctx *ictx, rc = iommu_device_claim_dma_owner(dev, ictx); if (rc) goto out_group_put; - +#endif idev = iommufd_object_alloc(ictx, idev, IOMMUFD_OBJ_DEVICE); if (IS_ERR(idev)) { rc = PTR_ERR(idev);
--
2.34.3