Revert "iommu/smmuv3: Implement bind/unbind_guest_msi"

virt inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I61SPO
CVE: NA

--------------------------------

This reverts commit 74eeb1a9.
Signed-off-by: NKunkun Jiang <jiangkunkun@huawei.com>
Reviewed-by: NKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c

@@ -3585,47 +3585,6 @@ static void arm_smmu_get_resv_regions(struct device *dev,
 	iommu_dma_get_resv_regions(dev, head);
 }
 
-static int
-arm_smmu_bind_guest_msi(struct iommu_domain *domain,
-			dma_addr_t giova, phys_addr_t gpa, size_t size)
-{
-	struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
-	struct arm_smmu_device *smmu;
-	int ret = -EINVAL;
-
-	mutex_lock(&smmu_domain->init_mutex);
-	smmu = smmu_domain->smmu;
-	if (!smmu)
-		goto out;
-
-	if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED)
-		goto out;
-
-	ret = iommu_dma_bind_guest_msi(domain, giova, gpa, size);
-out:
-	mutex_unlock(&smmu_domain->init_mutex);
-	return ret;
-}
-
-static void
-arm_smmu_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t giova)
-{
-	struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
-	struct arm_smmu_device *smmu;
-
-	mutex_lock(&smmu_domain->init_mutex);
-	smmu = smmu_domain->smmu;
-	if (!smmu)
-		goto unlock;
-
-	if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED)
-		goto unlock;
-
-	iommu_dma_unbind_guest_msi(domain, giova);
-unlock:
-	mutex_unlock(&smmu_domain->init_mutex);
-}
-
 static int arm_smmu_attach_pasid_table(struct iommu_domain *domain,
 				       struct iommu_pasid_table_config *cfg)
 {
@@ -4309,8 +4268,6 @@ static struct iommu_ops arm_smmu_ops = {
 	.attach_pasid_table	= arm_smmu_attach_pasid_table,
 	.detach_pasid_table	= arm_smmu_detach_pasid_table,
 	.cache_invalidate	= arm_smmu_cache_invalidate,
-	.bind_guest_msi		= arm_smmu_bind_guest_msi,
-	.unbind_guest_msi	= arm_smmu_unbind_guest_msi,
 	.dev_has_feat		= arm_smmu_dev_has_feature,
 	.dev_feat_enabled	= arm_smmu_dev_feature_enabled,
 	.dev_enable_feat	= arm_smmu_dev_enable_feature,