diff options
| author | Jason Gunthorpe <[email protected]> | 2023-05-11 01:42:08 -0300 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2023-05-23 08:15:55 +0200 |
| commit | 152431e4fe7f1aac8aa6cc57bfe58d2d2596be4d (patch) | |
| tree | 36784fc8cda55c172b732e95405b58efeecb0cf5 | |
| parent | e7f85dfbbc9cf8660174c45c213571aaa518df85 (diff) | |
iommu: Do iommu_group_create_direct_mappings() before attach
The iommu_probe_device() path calls iommu_create_device_direct_mappings()
after attaching the device.
IOMMU_RESV_DIRECT maps need to be continually in place, so if a hotplugged
device has new ranges the should have been mapped into the default domain
before it is attached.
Move the iommu_create_device_direct_mappings() call up.
Reviewed-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Tested-by: Heiko Stuebner <[email protected]>
Tested-by: Niklas Schnelle <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
| -rw-r--r-- | drivers/iommu/iommu.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 29ab5d990ef6..6b39f756c020 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -423,6 +423,8 @@ int iommu_probe_device(struct device *dev) mutex_lock(&group->mutex); + iommu_create_device_direct_mappings(group, dev); + if (group->domain) { ret = __iommu_device_set_domain(group, dev, group->domain, 0); } else if (!group->default_domain) { @@ -434,9 +436,11 @@ int iommu_probe_device(struct device *dev) */ iommu_alloc_default_domain(group, dev); group->domain = NULL; - if (group->default_domain) + if (group->default_domain) { + iommu_create_device_direct_mappings(group, dev); ret = __iommu_group_set_domain(group, group->default_domain); + } /* * We assume that the iommu driver starts up the device in @@ -447,8 +451,6 @@ int iommu_probe_device(struct device *dev) if (ret) goto err_unlock; - iommu_create_device_direct_mappings(group, dev); - mutex_unlock(&group->mutex); iommu_group_put(group); |