linux-kernel - [PATCH v2 05/12] iommu/amd: Make amd_iommu_update

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Message-ID: <20251001060954.5030-6-suravee.suthikulpanit@amd.com>
Date: Wed, 1 Oct 2025 06:09:47 +0000
From: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
To: <jgg@...dia.com>, <nicolinc@...dia.com>
CC: <linux-kernel@...r.kernel.org>, <robin.murphy@....com>, <will@...nel.org>,
	<joro@...tes.org>, <kevin.tian@...el.com>, <jsnitsel@...hat.com>,
	<vasant.hegde@....com>, <iommu@...ts.linux.dev>, <santosh.shukla@....com>,
	<sairaj.arunkodilkar@....com>, <jon.grimm@....com>,
	<prashanthpra@...gle.com>, <wvw@...gle.com>, <wnliu@...gle.com>,
	<gptran@...gle.com>, <kpsingh@...gle.com>, <joao.m.martins@...cle.com>,
	<alejandro.j.jimenez@...cle.com>, Suravee Suthikulpanit
	<suravee.suthikulpanit@....com>
Subject: [PATCH v2 05/12] iommu/amd: Make amd_iommu_update_dte256() non-static

To allow reuse in other files in subsequent patches.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
---
 drivers/iommu/amd/amd_iommu.h |  3 +++
 drivers/iommu/amd/iommu.c     | 11 ++++++-----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index 079fb1d44c00..eb46e8914eaf 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -190,5 +190,8 @@ struct iommu_dev_data *search_dev_data(struct amd_iommu *iommu, u16 devid);
 
 /* DTE */
 int amd_iommu_device_flush_dte(struct iommu_dev_data *dev_data);
+void amd_iommu_update_dte256(struct amd_iommu *iommu,
+			     struct iommu_dev_data *dev_data,
+			     struct dev_table_entry *new);
 
 #endif /* AMD_IOMMU_H */
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index fad74d2bc1b1..3f2c61509b60 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -132,8 +132,9 @@ static void write_dte_lower128(struct dev_table_entry *ptr, struct dev_table_ent
  * This function is used only by code, which updates DMA translation part of the DTE.
  * So, only consider control bits related to DMA when updating the entry.
  */
-static void update_dte256(struct amd_iommu *iommu, struct iommu_dev_data *dev_data,
-			  struct dev_table_entry *new)
+void amd_iommu_update_dte256(struct amd_iommu *iommu,
+			     struct iommu_dev_data *dev_data,
+			     struct dev_table_entry *new)
 {
 	unsigned long flags;
 	struct dev_table_entry *dev_table = get_dev_table(iommu);
@@ -413,7 +414,7 @@ static int clone_alias(struct pci_dev *pdev, u16 alias, void *data)
 		ret = -EINVAL;
 		goto out;
 	}
-	update_dte256(iommu, alias_data, &new);
+	amd_iommu_update_dte256(iommu, alias_data, &new);
 
 	amd_iommu_set_rlookup_table(iommu, alias);
 out:
@@ -2109,7 +2110,7 @@ static void set_dte_entry(struct amd_iommu *iommu,
 
 	set_dte_gcr3_table(iommu, dev_data, &new);
 
-	update_dte256(iommu, dev_data, &new);
+	amd_iommu_update_dte256(iommu, dev_data, &new);
 
 	/*
 	 * A kdump kernel might be replacing a domain ID that was copied from
@@ -2130,7 +2131,7 @@ static void clear_dte_entry(struct amd_iommu *iommu, struct iommu_dev_data *dev_
 	struct dev_table_entry *dte = &get_dev_table(iommu)[dev_data->devid];
 
 	make_clear_dte(dev_data, dte, &new);
-	update_dte256(iommu, dev_data, &new);
+	amd_iommu_update_dte256(iommu, dev_data, &new);
 }
 
 /* Update and flush DTE for the given device */
-- 
2.34.1