Commit 80ca79f3 authored by Lu Baolu's avatar Lu Baolu Committed by Joerg Roedel
Browse files

iommu/vt-d: Remove scalabe mode in domain_context_clear_one() 



domain_context_clear_one() only handles the context entry teardown in
legacy mode. Remove the scalable mode check in it to avoid dead code.

Remove an unnecessary check in the code as well.

Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240305013305.204605-6-baolu.lu@linux.intel.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent a016e538

drivers/iommu/intel/iommu.c

+1 −14
Original line number Diff line number Diff line
@@ -2124,9 +2124,6 @@ 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) {
@@ -2134,14 +2131,7 @@ 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);

	}



	context_clear_entry(context);

	__iommu_flush_cache(iommu, context, sizeof(*context));
@@ -2152,9 +2142,6 @@ 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,