linux-kernel - [RFC PATCH v2 25/27] iommu: ipmmu-vmsa: Add support for reserved regions

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Message-ID: <20251129160405.2568284-26-den@valinux.co.jp>
Date: Sun, 30 Nov 2025 01:04:03 +0900
From: Koichiro Den <den@...inux.co.jp>
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Subject: [RFC PATCH v2 25/27] iommu: ipmmu-vmsa: Add support for reserved regions

Add support for reserved regions using iommu_dma_get_resv_regions().

Signed-off-by: Koichiro Den <den@...inux.co.jp>
---
 drivers/iommu/ipmmu-vmsa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 724d67ad5ef2..4a89d95db0f8 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -25,6 +25,8 @@
 #include <linux/slab.h>
 #include <linux/sys_soc.h>
 
+#include "dma-iommu.h"
+
 #if defined(CONFIG_ARM) && !defined(CONFIG_IOMMU_DMA)
 #include <asm/dma-iommu.h>
 #else
@@ -888,6 +890,7 @@ static const struct iommu_ops ipmmu_ops = {
 	.device_group = IS_ENABLED(CONFIG_ARM) && !IS_ENABLED(CONFIG_IOMMU_DMA)
 			? generic_device_group : generic_single_device_group,
 	.of_xlate = ipmmu_of_xlate,
+	.get_resv_regions = iommu_dma_get_resv_regions,
 	.default_domain_ops = &(const struct iommu_domain_ops) {
 		.attach_dev	= ipmmu_attach_device,
 		.map_pages	= ipmmu_map,
-- 
2.48.1