linux-kernel - [PATCH 03/20] vfio/type1: Use iommu_paging_domain

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Date: Wed, 29 May 2024 13:32:33 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Kevin Tian <kevin.tian@...el.com>
Cc: Yi Liu <yi.l.liu@...el.com>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Kalle Valo <kvalo@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	mst@...hat.com,
	Jason Wang <jasowang@...hat.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Mikko Perttunen <mperttunen@...dia.com>,
	iommu@...ts.linux.dev,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH 03/20] vfio/type1: Use iommu_paging_domain_alloc()

Replace iommu_domain_alloc() with iommu_user_domain_alloc().

Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
---
 drivers/vfio/vfio_iommu_type1.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 3a0218171cfa..1d553f7f7c26 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -2135,7 +2135,7 @@ static int vfio_iommu_domain_alloc(struct device *dev, void *data)
 {
 	struct iommu_domain **domain = data;
 
-	*domain = iommu_domain_alloc(dev->bus);
+	*domain = iommu_user_domain_alloc(dev, 0);
 	return 1; /* Don't iterate */
 }
 
@@ -2192,11 +2192,12 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
 	 * us a representative device for the IOMMU API call. We don't actually
 	 * want to iterate beyond the first device (if any).
 	 */
-	ret = -EIO;
 	iommu_group_for_each_dev(iommu_group, &domain->domain,
 				 vfio_iommu_domain_alloc);
-	if (!domain->domain)
+	if (IS_ERR(domain->domain)) {
+		ret = PTR_ERR(domain->domain);
 		goto out_free_domain;
+	}
 
 	if (iommu->nesting) {
 		ret = iommu_enable_nesting(domain->domain);
-- 
2.34.1