linux-kernel - [PATCH v2 04/12] iommu/amd: Make amd_iommu_device_flush

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Message-ID: <20251001060954.5030-5-suravee.suthikulpanit@amd.com>
Date: Wed, 1 Oct 2025 06:09:46 +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 04/12] iommu/amd: Make amd_iommu_device_flush_dte() 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     | 8 ++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index 322c8c73444a..079fb1d44c00 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -188,4 +188,7 @@ void amd_iommu_domain_set_pgtable(struct protection_domain *domain,
 struct dev_table_entry *get_dev_table(struct amd_iommu *iommu);
 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);
+
 #endif /* AMD_IOMMU_H */
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 0b61059e485d..fad74d2bc1b1 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -1562,7 +1562,7 @@ static int device_flush_dte_alias(struct pci_dev *pdev, u16 alias, void *data)
 /*
  * Command send function for invalidating a device table entry
  */
-static int device_flush_dte(struct iommu_dev_data *dev_data)
+int amd_iommu_device_flush_dte(struct iommu_dev_data *dev_data)
 {
 	struct amd_iommu *iommu = get_amd_iommu_from_dev_data(dev_data);
 	struct pci_dev *pdev = NULL;
@@ -1788,7 +1788,7 @@ void amd_iommu_update_and_flush_device_table(struct protection_domain *domain)
 	}
 
 	list_for_each_entry(dev_data, &domain->dev_list, list)
-		device_flush_dte(dev_data);
+		amd_iommu_device_flush_dte(dev_data);
 
 	domain_flush_complete(domain);
 }
@@ -2144,7 +2144,7 @@ static void dev_update_dte(struct iommu_dev_data *dev_data, bool set)
 		clear_dte_entry(iommu, dev_data);
 
 	clone_aliases(iommu, dev_data->dev);
-	device_flush_dte(dev_data);
+	amd_iommu_device_flush_dte(dev_data);
 	iommu_completion_wait(iommu);
 }
 
@@ -2874,7 +2874,7 @@ static int amd_iommu_set_dirty_tracking(struct iommu_domain *domain,
 		spin_unlock(&dev_data->dte_lock);
 
 		/* Flush device DTE */
-		device_flush_dte(dev_data);
+		amd_iommu_device_flush_dte(dev_data);
 		domain_flush = true;
 	}
 
-- 
2.34.1