[RFC PATCH v4 29/38] iommu: ipmmu-vmsa: Add support for reserved regions
From: Koichiro Den <hidden>
Date: 2026-01-18 13:55:52
Also in:
dmaengine, linux-devicetree, linux-doc, linux-iommu, linux-kselftest, linux-pci, linux-renesas-soc, lkml
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
Add support for reserved regions using iommu_dma_get_resv_regions(). Signed-off-by: Koichiro Den <redacted> --- 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,
--
2.51.0