Lu Baolu
be2a24322c
iommufd: Remove unnecessary IOMMU_DEV_FEAT_IOPF
...
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@linux.intel.com >
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com >
Reviewed-by: Kevin Tian <kevin.tian@intel.com >
Tested-by: Zhangfei Gao <zhangfei.gao@linaro.org >
Link: https://lore.kernel.org/r/20250418080130.1844424-8-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de >
2025-04-28 13:04:34 +02:00
Yi Liu
6fc85bbbea
iommufd: Balance veventq->num_events inc/dec
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iommufd_veventq_fops_read() decrements veventq->num_events when a vevent
is read out. However, the report path ony increments veventq->num_events
for normal events. To be balanced, make the read path decrement num_events
only for normal vevents.
Fixes: e36ba5ab80https://patch.msgid.link/r/20250324120034.5940-3-yi.l.liu@intel.com
Signed-off-by: Yi Liu <yi.l.liu@intel.com >
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com >
Tested-by: Nicolin Chen <nicolinc@nvidia.com >
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com >
2025-03-28 10:07:23 -03:00
Nicolin Chen
e36ba5ab80
iommufd: Add IOMMUFD_OBJ_VEVENTQ and IOMMUFD_CMD_VEVENTQ_ALLOC
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Introduce a new IOMMUFD_OBJ_VEVENTQ object for vIOMMU Event Queue that
provides user space (VMM) another FD to read the vIOMMU Events.
Allow a vIOMMU object to allocate vEVENTQs, with a condition that each
vIOMMU can only have one single vEVENTQ per type.
Add iommufd_veventq_alloc() with iommufd_veventq_ops for the new ioctl.
Link: https://patch.msgid.link/r/21acf0751dd5c93846935ee06f93b9c65eff5e04.1741719725.git.nicolinc@nvidia.com
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com >
Reviewed-by: Kevin Tian <kevin.tian@intel.com >
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com >
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com >
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com >
2025-03-18 14:17:47 -03:00
Nicolin Chen
0507f337fc
iommufd: Rename fault.c to eventq.c
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Rename the file, aligning with the new eventq object.
Link: https://patch.msgid.link/r/d726397e2d08028e25a1cb6eb9febefac35a32ba.1741719725.git.nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com >
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com >
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com >
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com >
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com >
2025-03-17 14:51:19 -03:00
