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| author | Klaus Jensen <k.jensen@samsung.com> | 2024-11-04 09:40:38 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-11-05 13:32:27 +0100 |
| commit | 9baed1c28030ebac5d44b889b3adf155340fa751 (patch) | |
| tree | c5cdacf639b1490d8ba8da3a3c2266a39e7ab2bf /drivers/iommu/intel/iommu.c | |
| parent | cbeb1b7eee2ffa63b4d809c0a3f068309df933fa (diff) | |
| download | linux-9baed1c28030ebac5d44b889b3adf155340fa751.tar.gz linux-9baed1c28030ebac5d44b889b3adf155340fa751.tar.bz2 linux-9baed1c28030ebac5d44b889b3adf155340fa751.zip | |
iommu/vt-d: Drop pasid requirement for prq initialization
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>
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 0ac4ce192baa..74cf84e3e4e0 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -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; |