Merge v7.1.5linux-rolling-stable

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

7 files changed, 25 insertions, 17 deletions

diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index f9f718087893..c726d115939a 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -948,12 +948,13 @@ static inline int get_hpet_devid(int id)
 }
 
 enum amd_iommu_intr_mode_type {
-	AMD_IOMMU_GUEST_IR_LEGACY,
-
-	/* This mode is not visible to users. It is used when
-	 * we cannot fully enable vAPIC and fallback to only support
-	 * legacy interrupt remapping via 128-bit IRTE.
+	/*
+	 * The legacy format mode is not visible to users to prevent the user
+	 * from crashing x2APIC systems, which for all intents and purposes
+	 * require 128-bit IRTEs.   The legacy format will be forced as needed
+	 * when hardware doesn't support 128-bit IRTEs.
 	 */
+	AMD_IOMMU_GUEST_IR_LEGACY,
 	AMD_IOMMU_GUEST_IR_LEGACY_GA,
 	AMD_IOMMU_GUEST_IR_VAPIC,
 };
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 3bdb380d23e9..9a846dcd0306 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -1939,12 +1939,11 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h,
 		/* XT and GAM require GA mode. */
 		if ((h->efr_reg & (0x1 << IOMMU_EFR_GASUP_SHIFT)) == 0) {
 			amd_iommu_guest_ir = AMD_IOMMU_GUEST_IR_LEGACY;
-			break;
+		} else {
+			if (h->efr_reg & BIT(IOMMU_EFR_XTSUP_SHIFT))
+				amd_iommu_xt_mode = IRQ_REMAP_X2APIC_MODE;
 		}
 
-		if (h->efr_reg & BIT(IOMMU_EFR_XTSUP_SHIFT))
-			amd_iommu_xt_mode = IRQ_REMAP_X2APIC_MODE;
-
 		if (h->efr_attr & BIT(IOMMU_IVHD_ATTR_HATDIS_SHIFT)) {
 			pr_warn_once("Host Address Translation is not supported.\n");
 			amd_iommu_hatdis = true;
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index edd41b5a3b6a..2d006049dd61 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -39,7 +39,7 @@ static const struct of_device_id qcom_smmu_actlr_client_of_match[] = {
 			.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
 	{ .compatible = "qcom,adreno-smmu",
 			.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
-	{ .compatible = "qcom,fastrpc",
+	{ .compatible = "qcom,fastrpc-compute-cb",
 			.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
 	{ .compatible = "qcom,qcm2290-mdss",
 			.data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 381b60d9e7ce..3ca2c5da2843 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1465,7 +1465,7 @@ int iommu_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 			 */
 			s->dma_address = pci_p2pdma_bus_addr_map(
 				p2pdma_state.mem, sg_phys(s));
-			sg_dma_len(s) = sg->length;
+			sg_dma_len(s) = s->length;
 			sg_dma_mark_bus_address(s);
 			continue;
 		default:
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 4d0e65bc131d..849d06dfe1ae 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -157,7 +157,10 @@ static void device_rbtree_remove(struct device_domain_info *info)
 	unsigned long flags;
 
 	spin_lock_irqsave(&iommu->device_rbtree_lock, flags);
-	rb_erase(&info->node, &iommu->device_rbtree);
+	if (!RB_EMPTY_NODE(&info->node)) {
+		rb_erase(&info->node, &iommu->device_rbtree);
+		RB_CLEAR_NODE(&info->node);
+	}
 	spin_unlock_irqrestore(&iommu->device_rbtree_lock, flags);
 }
 
@@ -3254,6 +3257,7 @@ static struct iommu_device *intel_iommu_probe_device(struct device *dev)
 
 	info->dev = dev;
 	info->iommu = iommu;
+	RB_CLEAR_NODE(&info->node);
 	if (dev_is_pci(dev)) {
 		if (ecap_dev_iotlb_support(iommu->ecap) &&
 		    pci_ats_supported(pdev) &&
diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c
index 89541b74ab8c..40910dc7363b 100644
--- a/drivers/iommu/intel/pasid.c
+++ b/drivers/iommu/intel/pasid.c
@@ -748,10 +748,12 @@ static void device_pasid_table_teardown(struct device *dev, u8 bus, u8 devfn)
 	}
 
 	did = context_domain_id(context);
-	context_clear_entry(context);
+	context_clear_present(context);
 	__iommu_flush_cache(iommu, context, sizeof(*context));
 	spin_unlock(&iommu->lock);
 	intel_context_flush_no_pasid(info, context, did);
+	context_clear_entry(context);
+	__iommu_flush_cache(iommu, context, sizeof(*context));
 }
 
 static int pci_pasid_table_teardown(struct pci_dev *pdev, u16 alias, void *data)
diff --git a/drivers/iommu/iommufd/pages.c b/drivers/iommu/iommufd/pages.c
index 9bdb2945afe1..03c8379bbc34 100644
--- a/drivers/iommu/iommufd/pages.c
+++ b/drivers/iommu/iommufd/pages.c
@@ -1656,20 +1656,22 @@ void iopt_release_pages(struct kref *kref)
 	WARN_ON(!RB_EMPTY_ROOT(&pages->domains_itree.rb_root));
 	WARN_ON(pages->npinned);
 	WARN_ON(!xa_empty(&pages->pinned_pfns));
-	mmdrop(pages->source_mm);
-	mutex_destroy(&pages->mutex);
-	put_task_struct(pages->source_task);
-	free_uid(pages->source_user);
 	if (iopt_is_dmabuf(pages) && pages->dmabuf.attach) {
 		struct dma_buf *dmabuf = pages->dmabuf.attach->dmabuf;
 
+		dma_resv_lock(dmabuf->resv, NULL);
 		dma_buf_unpin(pages->dmabuf.attach);
+		dma_resv_unlock(dmabuf->resv);
 		dma_buf_detach(dmabuf, pages->dmabuf.attach);
 		dma_buf_put(dmabuf);
 		WARN_ON(!list_empty(&pages->dmabuf.tracker));
 	} else if (pages->type == IOPT_ADDRESS_FILE) {
 		fput(pages->file);
 	}
+	mmdrop(pages->source_mm);
+	mutex_destroy(&pages->mutex);
+	put_task_struct(pages->source_task);
+	free_uid(pages->source_user);
 	kfree(pages);
 }