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iommu/vt-d: Drop pasid requirement for prq initialization

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PASID support within the IOMMU is not required to enable the Page
Request Queue, only the PRS capability.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
Link: https://lore.kernel.org/r/20241015-jag-iopfv8-v4-5-b696ca89ba29@kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Klaus Jensen
2024-11-04 09:40:38 +08:00
committed by Joerg Roedel
parent cbeb1b7eee
commit 9baed1c280
1 changed files with 4 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/iommu/intel/iommu.c
+4 -6
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@@ -1329,10 +1329,8 @@ static void free_dmar_iommu(struct intel_iommu *iommu)
/* free context mapping */
free_context_table(iommu);
if (pasid_supported(iommu)) {
if (ecap_prs(iommu->ecap))
intel_iommu_finish_prq(iommu);
}
if (ecap_prs(iommu->ecap))
intel_iommu_finish_prq(iommu);
}
/*
@@ -2192,7 +2190,7 @@ static int __init init_dmars(void)
iommu_flush_write_buffer(iommu);
if (pasid_supported(iommu) && ecap_prs(iommu->ecap)) {
if (ecap_prs(iommu->ecap)) {
/*
* Call dmar_alloc_hwirq() with dmar_global_lock held,
* could cause possible lock race condition.
@@ -2616,7 +2614,7 @@ static int intel_iommu_add(struct dmar_drhd_unit *dmaru)
intel_iommu_init_qi(iommu);
iommu_flush_write_buffer(iommu);
if (pasid_supported(iommu) && ecap_prs(iommu->ecap)) {
if (ecap_prs(iommu->ecap)) {
ret = intel_iommu_enable_prq(iommu);
if (ret)
goto disable_iommu;