linux-kernel - [PATCH 2/5] iommu/vt-d: Remove domain_alloc

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Message-ID: <20250107021746.6908-3-baolu.lu@linux.intel.com>
Date: Tue,  7 Jan 2025 10:17:43 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Joerg Roedel <joro@...tes.org>
Cc: Jason Gunthorpe <jgg@...dia.com>,
	Kees Bakker <kees@...erbout.nl>,
	Zhenzhong Duan <zhenzhong.duan@...el.com>,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/5] iommu/vt-d: Remove domain_alloc_paging()

From: Jason Gunthorpe <jgg@...dia.com>

This is duplicated by intel_iommu_domain_alloc_paging_flags(), just remove
it.

Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Reviewed-by: Yi Liu <yi.l.liu@...el.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@...hat.com>
Link: https://lore.kernel.org/r/0-v1-b101d00c5ee5+17645-vtd_paging_flags_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
---
 drivers/iommu/intel/iommu.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 8f75c11a3ec4..113c66dcc32e 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4446,21 +4446,6 @@ static struct iommu_domain identity_domain = {
 	},
 };
 
-static struct iommu_domain *intel_iommu_domain_alloc_paging(struct device *dev)
-{
-	struct device_domain_info *info = dev_iommu_priv_get(dev);
-	struct intel_iommu *iommu = info->iommu;
-	struct dmar_domain *dmar_domain;
-	bool first_stage;
-
-	first_stage = first_level_by_default(iommu);
-	dmar_domain = paging_domain_alloc(dev, first_stage);
-	if (IS_ERR(dmar_domain))
-		return ERR_CAST(dmar_domain);
-
-	return &dmar_domain->domain;
-}
-
 const struct iommu_ops intel_iommu_ops = {
 	.blocked_domain		= &blocking_domain,
 	.release_domain		= &blocking_domain,
@@ -4469,7 +4454,6 @@ const struct iommu_ops intel_iommu_ops = {
 	.hw_info		= intel_iommu_hw_info,
 	.domain_alloc_paging_flags = intel_iommu_domain_alloc_paging_flags,
 	.domain_alloc_sva	= intel_svm_domain_alloc,
-	.domain_alloc_paging	= intel_iommu_domain_alloc_paging,
 	.domain_alloc_nested	= intel_iommu_domain_alloc_nested,
 	.probe_device		= intel_iommu_probe_device,
 	.release_device		= intel_iommu_release_device,
-- 
2.43.0