From: Mukesh R <mrathor@linux.microsoft.com>
To: hpa@zytor.com, robin.murphy@arm.com, robh@kernel.org,
wei.liu@kernel.org, mrathor@linux.microsoft.com,
mhklinux@outlook.com, muislam@microsoft.com,
namjain@linux.microsoft.com, magnuskulke@linux.microsoft.com,
anbelski@linux.microsoft.com, 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: kys@microsoft.com, haiyangz@microsoft.com, decui@microsoft.com,
longli@microsoft.com, tglx@kernel.org, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
joro@8bytes.org, will@kernel.org, lpieralisi@kernel.org,
kwilczynski@kernel.org, bhelgaas@google.com, arnd@arndb.de,
jacob.pan@linux.microsoft.com
Subject: [PATCH V4 5/9] mshv: Import data structs around device passthru from hyperv headers
Date: Fri, 17 Jul 2026 19:19:45 -0700 [thread overview]
Message-ID: <20260718021949.926306-6-mrathor@linux.microsoft.com> (raw)
In-Reply-To: <20260718021949.926306-1-mrathor@linux.microsoft.com>
Copy/import from Hyper-V public headers, definitions and declarations that
are related to creating domains in the hypervisor, attaching devices to
them, etc.
Signed-off-by: Mukesh R <mrathor@linux.microsoft.com>
---
include/hyperv/hvgdk_mini.h | 8 +++++
include/hyperv/hvhdk_mini.h | 67 +++++++++++++++++++++++++++++++++++++
2 files changed, 75 insertions(+)
diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h
index 6a4e8b9d570f..e62f8d708e8e 100644
--- a/include/hyperv/hvgdk_mini.h
+++ b/include/hyperv/hvgdk_mini.h
@@ -326,6 +326,8 @@ union hv_hypervisor_version_info {
/* stimer Direct Mode is available */
#define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(19)
+#define HV_DEVICE_DOMAIN_AVAILABLE BIT(24)
+
/*
* Implementation recommendations. Indicates which behaviors the hypervisor
* recommends the OS implement for optimal performance.
@@ -486,9 +488,15 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_ASSIST_PAGE */
#define HVCALL_GET_VP_INDEX_FROM_APIC_ID 0x009a
#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
+#define HVCALL_CREATE_DEVICE_DOMAIN 0x00b1
+#define HVCALL_ATTACH_DEVICE_DOMAIN 0x00b2
+#define HVCALL_MAP_DEVICE_GPA_PAGES 0x00b3
+#define HVCALL_UNMAP_DEVICE_GPA_PAGES 0x00b4
#define HVCALL_SIGNAL_EVENT_DIRECT 0x00c0
#define HVCALL_POST_MESSAGE_DIRECT 0x00c1
#define HVCALL_DISPATCH_VP 0x00c2
+#define HVCALL_DETACH_DEVICE_DOMAIN 0x00c4
+#define HVCALL_DELETE_DEVICE_DOMAIN 0x00c5
#define HVCALL_GET_GPA_PAGES_ACCESS_STATES 0x00c9
#define HVCALL_ACQUIRE_SPARSE_SPA_PAGE_HOST_ACCESS 0x00d7
#define HVCALL_RELEASE_SPARSE_SPA_PAGE_HOST_ACCESS 0x00d8
diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h
index b4cb2fa26e9b..90497635c3cb 100644
--- a/include/hyperv/hvhdk_mini.h
+++ b/include/hyperv/hvhdk_mini.h
@@ -547,4 +547,71 @@ union hv_device_id { /* HV_DEVICE_ID */
} acpi;
} __packed;
+/* 3 domain types: stage 1, stage 2, and SOC */
+#define HV_DEVICE_DOMAIN_TYPE_S2 0 /* HV_DEVICE_DOMAIN_ID_TYPE_S2 */
+#define HV_DEVICE_DOMAIN_TYPE_S1 1 /* HV_DEVICE_DOMAIN_ID_TYPE_S1 */
+#define HV_DEVICE_DOMAIN_TYPE_SOC 2 /* HV_DEVICE_DOMAIN_ID_TYPE_SOC */
+
+/* ID for stage 2 default domain and NULL domain */
+#define HV_DEVICE_DOMAIN_ID_S2_DEFAULT 0
+#define HV_DEVICE_DOMAIN_ID_S2_NULL 0xFFFFFFFFULL
+
+union hv_device_domain_id {
+ u64 as_uint64;
+ struct {
+ u32 type : 4;
+ u32 reserved : 28;
+ u32 id;
+ };
+} __packed;
+
+struct hv_input_device_domain { /* HV_INPUT_DEVICE_DOMAIN */
+ u64 partition_id;
+ union hv_input_vtl owner_vtl;
+ u8 padding[7];
+ union hv_device_domain_id domain_id;
+} __packed;
+
+union hv_create_device_domain_flags { /* HV_CREATE_DEVICE_DOMAIN_FLAGS */
+ u32 as_uint32;
+ struct {
+ u32 forward_progress_required : 1;
+ u32 inherit_owning_vtl : 1;
+ u32 reserved : 30;
+ } __packed;
+} __packed;
+
+struct hv_input_create_device_domain { /* HV_INPUT_CREATE_DEVICE_DOMAIN */
+ struct hv_input_device_domain device_domain;
+ union hv_create_device_domain_flags create_device_domain_flags;
+} __packed;
+
+struct hv_input_delete_device_domain { /* HV_INPUT_DELETE_DEVICE_DOMAIN */
+ struct hv_input_device_domain device_domain;
+} __packed;
+
+struct hv_input_attach_device_domain { /* HV_INPUT_ATTACH_DEVICE_DOMAIN */
+ struct hv_input_device_domain device_domain;
+ union hv_device_id device_id;
+} __packed;
+
+struct hv_input_detach_device_domain { /* HV_INPUT_DETACH_DEVICE_DOMAIN */
+ u64 partition_id;
+ union hv_device_id device_id;
+} __packed;
+
+struct hv_input_map_device_gpa_pages { /* HV_INPUT_MAP_DEVICE_GPA_PAGES */
+ struct hv_input_device_domain device_domain;
+ union hv_input_vtl target_vtl;
+ u8 padding[3];
+ u32 map_flags;
+ u64 target_device_va_base;
+ u64 gpa_page_list[];
+} __packed;
+
+struct hv_input_unmap_device_gpa_pages { /* HV_INPUT_UNMAP_DEVICE_GPA_PAGES */
+ struct hv_input_device_domain device_domain;
+ u64 target_device_va_base;
+} __packed;
+
#endif /* _HV_HVHDK_MINI_H */
--
2.51.2.vfs.0.1
next prev parent reply other threads:[~2026-07-18 2:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-18 2:19 [PATCH V4 0/9] PCI passthru on Hyper-V Mukesh R
2026-07-18 2:19 ` [PATCH V4 1/9] mshv: Provide a way to get partition ID if running in a VMM process Mukesh R
2026-07-18 2:19 ` [PATCH V4 2/9] mshv: Add declarations and definitions for VFIO-MSHV bridge device Mukesh R
2026-07-18 2:19 ` [PATCH V4 3/9] mshv: Introduce basic mshv bridge device for VFIO to build upon Mukesh R
2026-07-18 2:19 ` [PATCH V4 4/9] mshv: Add ioctl support for MSHV-VFIO bridge device Mukesh R
2026-07-18 2:19 ` Mukesh R [this message]
2026-07-18 2:19 ` [PATCH V4 6/9] PCI: hv: Export hv_build_devid_type_pci() and change return type Mukesh R
2026-07-18 2:19 ` [PATCH V4 7/9] x86/hyperv: Implement Hyper-V virtual IOMMU Mukesh R
2026-07-18 2:19 ` [PATCH V4 8/9] mshv: Populate mmio mappings for PCI passthru Mukesh R
2026-07-18 2:19 ` [PATCH V4 9/9] mshv: Disable movable regions upfront if device passthru Mukesh R
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