diff options
| author |   Baoquan He <bhe@redhat.com> | 2017-08-09 16:33:40 +0800 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2017-08-15 18:14:39 +0200 |
| commit | e01d1913b0d0817191418381a6fcebaa01abde2a (patch) | |
| tree | 462e79ba6c2b8b9c590e392b8f4fbb508f52dc4b /drivers/iommu/iommu.c | |
| parent | iommu/amd: Do sanity check for address translation and irq remap of old dev table entry (diff) | |
| download | linux-dev-e01d1913b0d0817191418381a6fcebaa01abde2a.tar.xz linux-dev-e01d1913b0d0817191418381a6fcebaa01abde2a.zip | |
iommu: Add is_attach_deferred call-back to iommu-ops
This new call-back will be used to check if the domain attach need be
deferred for now. If yes, the domain attach/detach will return directly.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 3f6ea160afed..86581b115b92 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1283,6 +1283,10 @@ static int __iommu_attach_device(struct iommu_domain *domain, struct device *dev) { int ret; + if ((domain->ops->is_attach_deferred != NULL) && + domain->ops->is_attach_deferred(domain, dev)) + return 0; + if (unlikely(domain->ops->attach_dev == NULL)) return -ENODEV; @@ -1324,6 +1328,10 @@ EXPORT_SYMBOL_GPL(iommu_attach_device); static void __iommu_detach_device(struct iommu_domain *domain, struct device *dev) { + if ((domain->ops->is_attach_deferred != NULL) && + domain->ops->is_attach_deferred(domain, dev)) + return; + if (unlikely(domain->ops->detach_dev == NULL)) return; |