From: Yu Zhang <zhangyu1@linux.microsoft.com>
To: linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
iommu@lists.linux.dev, linux-pci@vger.kernel.org,
linux-arch@vger.kernel.org
Cc: wei.liu@kernel.org, kys@microsoft.com, haiyangz@microsoft.com,
decui@microsoft.com, longli@microsoft.com, joro@8bytes.org,
will@kernel.org, robin.murphy@arm.com, bhelgaas@google.com,
kwilczynski@kernel.org, lpieralisi@kernel.org, mani@kernel.org,
robh@kernel.org, arnd@arndb.de, jgg@ziepe.ca,
mhklinux@outlook.com, jacob.pan@linux.microsoft.com,
tgopinath@linux.microsoft.com,
easwar.hariharan@linux.microsoft.com
Subject: [PATCH v1 1/4] iommu: Move Hyper-V IOMMU driver to its own subdirectory
Date: Tue, 12 May 2026 00:24:05 +0800 [thread overview]
Message-ID: <20260511162408.1180069-2-zhangyu1@linux.microsoft.com> (raw)
In-Reply-To: <20260511162408.1180069-1-zhangyu1@linux.microsoft.com>
From: Easwar Hariharan <eahariha@linux.microsoft.com>
The Hyper-V IOMMU driver currently only supports IRQ remapping.
As it will be adding DMA remapping support, prepare a directory
to contain all the different feature files.
This is a simple rename commit and has no functional changes.
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Signed-off-by: Yu Zhang <zhangyu1@linux.microsoft.com>
---
MAINTAINERS | 2 +-
drivers/iommu/Kconfig | 10 +---------
drivers/iommu/Makefile | 2 +-
drivers/iommu/hyperv/Kconfig | 10 ++++++++++
drivers/iommu/hyperv/Makefile | 2 ++
.../iommu/{hyperv-iommu.c => hyperv/irq_remapping.c} | 2 +-
6 files changed, 16 insertions(+), 12 deletions(-)
create mode 100644 drivers/iommu/hyperv/Kconfig
create mode 100644 drivers/iommu/hyperv/Makefile
rename drivers/iommu/{hyperv-iommu.c => hyperv/irq_remapping.c} (99%)
diff --git a/MAINTAINERS b/MAINTAINERS
index b2040011a386..1519de2a2a09 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11979,7 +11979,7 @@ F: drivers/clocksource/hyperv_timer.c
F: drivers/hid/hid-hyperv.c
F: drivers/hv/
F: drivers/input/serio/hyperv-keyboard.c
-F: drivers/iommu/hyperv-iommu.c
+F: drivers/iommu/hyperv/
F: drivers/net/ethernet/microsoft/
F: drivers/net/hyperv/
F: drivers/pci/controller/pci-hyperv-intf.c
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index f86262b11416..0bdf2ac3d782 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -195,6 +195,7 @@ config MSM_IOMMU
source "drivers/iommu/amd/Kconfig"
source "drivers/iommu/arm/Kconfig"
source "drivers/iommu/intel/Kconfig"
+source "drivers/iommu/hyperv/Kconfig"
source "drivers/iommu/iommufd/Kconfig"
source "drivers/iommu/riscv/Kconfig"
@@ -351,15 +352,6 @@ config MTK_IOMMU_V1
if unsure, say N here.
-config HYPERV_IOMMU
- bool "Hyper-V IRQ Handling"
- depends on HYPERV && X86
- select IOMMU_API
- default HYPERV
- help
- Stub IOMMU driver to handle IRQs to support Hyper-V Linux
- guest and root partitions.
-
config VIRTIO_IOMMU
tristate "Virtio IOMMU driver"
depends on VIRTIO
diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile
index 0275821f4ef9..32f3ca758556 100644
--- a/drivers/iommu/Makefile
+++ b/drivers/iommu/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_AMD_IOMMU) += amd/
obj-$(CONFIG_INTEL_IOMMU) += intel/
obj-$(CONFIG_RISCV_IOMMU) += riscv/
obj-$(CONFIG_GENERIC_PT) += generic_pt/fmt/
+obj-$(CONFIG_HYPERV_IOMMU) += hyperv/
obj-$(CONFIG_IOMMU_API) += iommu.o
obj-$(CONFIG_IOMMU_SUPPORT) += iommu-pages.o
obj-$(CONFIG_IOMMU_API) += iommu-traces.o
@@ -30,7 +31,6 @@ obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o
obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o
obj-$(CONFIG_FSL_PAMU) += fsl_pamu.o fsl_pamu_domain.o
obj-$(CONFIG_S390_IOMMU) += s390-iommu.o
-obj-$(CONFIG_HYPERV_IOMMU) += hyperv-iommu.o
obj-$(CONFIG_VIRTIO_IOMMU) += virtio-iommu.o
obj-$(CONFIG_IOMMU_SVA) += iommu-sva.o
obj-$(CONFIG_IOMMU_IOPF) += io-pgfault.o
diff --git a/drivers/iommu/hyperv/Kconfig b/drivers/iommu/hyperv/Kconfig
new file mode 100644
index 000000000000..30f40d867036
--- /dev/null
+++ b/drivers/iommu/hyperv/Kconfig
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# HyperV paravirtualized IOMMU support
+config HYPERV_IOMMU
+ bool "Hyper-V IRQ Handling"
+ depends on HYPERV && X86
+ select IOMMU_API
+ default HYPERV
+ help
+ Stub IOMMU driver to handle IRQs to support Hyper-V Linux
+ guest and root partitions.
diff --git a/drivers/iommu/hyperv/Makefile b/drivers/iommu/hyperv/Makefile
new file mode 100644
index 000000000000..9f557bad94ff
--- /dev/null
+++ b/drivers/iommu/hyperv/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_HYPERV_IOMMU) += irq_remapping.o
diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv/irq_remapping.c
similarity index 99%
rename from drivers/iommu/hyperv-iommu.c
rename to drivers/iommu/hyperv/irq_remapping.c
index 479103261ae6..62a94a8c9e95 100644
--- a/drivers/iommu/hyperv-iommu.c
+++ b/drivers/iommu/hyperv/irq_remapping.c
@@ -22,7 +22,7 @@
#include <asm/hypervisor.h>
#include <asm/mshyperv.h>
-#include "irq_remapping.h"
+#include "../irq_remapping.h"
#ifdef CONFIG_IRQ_REMAP
--
2.52.0
next prev parent reply other threads:[~2026-05-11 16:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 16:24 [PATCH v1 0/4] Hyper-V: Add para-virtualized IOMMU support for Linux guests Yu Zhang
2026-05-11 16:24 ` Yu Zhang [this message]
2026-05-11 16:24 ` [PATCH v1 2/4] hyperv: Introduce new hypercall interfaces used by Hyper-V guest IOMMU Yu Zhang
2026-05-11 16:24 ` [PATCH v1 3/4] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest Yu Zhang
2026-05-11 16:24 ` [PATCH v1 4/4] iommu/hyperv: Add page-selective IOTLB flush support Yu Zhang
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