Messages in this thread Patch in this message | | | From | Lu Baolu <> | Subject | [PATCH 3/3] iommu/vt-d: Remove scalabe mode in domain_context_clear_one() | Date | Thu, 29 Feb 2024 17:48:04 +0800 |
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domain_context_clear_one() only handles the context entry teardown in legacy mode. Remove the scalable mode check in it to avoid dead code.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> --- drivers/iommu/intel/iommu.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index d682eb6ad4d2..50eb9aed47cc 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2175,9 +2175,6 @@ static void domain_context_clear_one(struct device_domain_info *info, u8 bus, u8 struct context_entry *context; u16 did_old; - if (!iommu) - return; - spin_lock(&iommu->lock); context = iommu_context_addr(iommu, bus, devfn, 0); if (!context) { @@ -2185,14 +2182,7 @@ static void domain_context_clear_one(struct device_domain_info *info, u8 bus, u8 return; } - if (sm_supported(iommu)) { - if (hw_pass_through && domain_type_is_si(info->domain)) - did_old = FLPT_DEFAULT_DID; - else - did_old = domain_id_iommu(info->domain, iommu); - } else { - did_old = context_domain_id(context); - } + did_old = context_domain_id(context); context_clear_entry(context); __iommu_flush_cache(iommu, context, sizeof(*context)); @@ -2203,9 +2193,6 @@ static void domain_context_clear_one(struct device_domain_info *info, u8 bus, u8 DMA_CCMD_MASK_NOBIT, DMA_CCMD_DEVICE_INVL); - if (sm_supported(iommu)) - qi_flush_pasid_cache(iommu, did_old, QI_PC_ALL_PASIDS, 0); - iommu->flush.flush_iotlb(iommu, did_old, 0, -- 2.34.1
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