diff options
| author | Lu Baolu <[email protected]> | 2024-09-02 02:27:14 +0000 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2024-09-02 16:14:56 +0000 |
| commit | 487df6836606dc67cd8e2c26616f581c8800a17a (patch) | |
| tree | ac1d67c968fbcc91aaf303c7b5e83d7f9b8a3c19 /drivers/iommu/intel/nested.c | |
| parent | iommu/vt-d: Always reserve a domain ID for identity setup (diff) | |
| download | kernel-487df6836606dc67cd8e2c26616f581c8800a17a.tar.gz kernel-487df6836606dc67cd8e2c26616f581c8800a17a.zip | |
iommu/vt-d: Remove has_iotlb_device flag
The has_iotlb_device flag was used to indicate if a domain had attached
devices with ATS enabled. Domains without this flag didn't require device
TLB invalidation during unmap operations, optimizing performance by
avoiding unnecessary device iteration.
With the introduction of cache tags, this flag is no longer needed. The
code to iterate over attached devices was removed by commit 06792d067989
("iommu/vt-d: Cleanup use of iommu_flush_iotlb_psi()").
Remove has_iotlb_device to avoid unnecessary code.
Suggested-by: Jason Gunthorpe <[email protected]>
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'drivers/iommu/intel/nested.c')
| -rw-r--r-- | drivers/iommu/intel/nested.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/iommu/intel/nested.c b/drivers/iommu/intel/nested.c index 16a2bcf5cfeb..36a91b1b52be 100644 --- a/drivers/iommu/intel/nested.c +++ b/drivers/iommu/intel/nested.c @@ -66,8 +66,6 @@ static int intel_nested_attach_dev(struct iommu_domain *domain, list_add(&info->link, &dmar_domain->devices); spin_unlock_irqrestore(&dmar_domain->lock, flags); - domain_update_iotlb(dmar_domain); - return 0; unassign_tag: cache_tag_unassign_domain(dmar_domain, dev, IOMMU_NO_PASID); |