Merge tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - Add support for running as the root partition in Hyper-V (Microsoft
   Hypervisor) by exposing /dev/mshv (Nuno and various people)

 - Add support for CPU offlining in Hyper-V (Hamza Mahfooz)

 - Misc fixes and cleanups (Roman Kisel, Tianyu Lan, Wei Liu, Michael
   Kelley, Thorsten Blum)

* tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
  x86/hyperv: fix an indentation issue in mshyperv.h
  x86/hyperv: Add comments about hv_vpset and var size hypercall input args
  Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs
  hyperv: Add definitions for root partition driver to hv headers
  x86: hyperv: Add mshv_handler() irq handler and setup function
  Drivers: hv: Introduce per-cpu event ring tail
  Drivers: hv: Export some functions for use by root partition module
  acpi: numa: Export node_to_pxm()
  hyperv: Introduce hv_recommend_using_aeoi()
  arm64/hyperv: Add some missing functions to arm64
  x86/mshyperv: Add support for extended Hyper-V features
  hyperv: Log hypercall status codes as strings
  x86/hyperv: Fix check of return value from snp_set_vmsa()
  x86/hyperv: Add VTL mode callback for restarting the system
  x86/hyperv: Add VTL mode emergency restart callback
  hyperv: Remove unused union and structs
  hyperv: Add CONFIG_MSHV_ROOT to gate root partition support
  hyperv: Change hv_root_partition into a function
  hyperv: Convert hypercall statuses to linux error codes
  drivers/hv: add CPU offlining support
  ...

1 files changed, 1 insertions, 56 deletions

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 4179add2864b..675959fb97ba 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -371,19 +371,6 @@ struct vmtransfer_page_packet_header {
 	struct vmtransfer_page_range ranges[];
 } __packed;
 
-struct vmgpadl_packet_header {
-	struct vmpacket_descriptor d;
-	u32 gpadl;
-	u32 reserved;
-} __packed;
-
-struct vmadd_remove_transfer_page_set {
-	struct vmpacket_descriptor d;
-	u32 gpadl;
-	u16 xfer_pageset_id;
-	u16 reserved;
-} __packed;
-
 /*
  * This structure defines a range in guest physical space that can be made to
  * look virtually contiguous.
@@ -395,30 +382,6 @@ struct gpa_range {
 };
 
 /*
- * This is the format for an Establish Gpadl packet, which contains a handle by
- * which this GPADL will be known and a set of GPA ranges associated with it.
- * This can be converted to a MDL by the guest OS.  If there are multiple GPA
- * ranges, then the resulting MDL will be "chained," representing multiple VA
- * ranges.
- */
-struct vmestablish_gpadl {
-	struct vmpacket_descriptor d;
-	u32 gpadl;
-	u32 range_cnt;
-	struct gpa_range range[1];
-} __packed;
-
-/*
- * This is the format for a Teardown Gpadl packet, which indicates that the
- * GPADL handle in the Establish Gpadl packet will never be referenced again.
- */
-struct vmteardown_gpadl {
-	struct vmpacket_descriptor d;
-	u32 gpadl;
-	u32 reserved;	/* for alignment to a 8-byte boundary */
-} __packed;
-
-/*
  * This is the format for a GPA-Direct packet, which contains a set of GPA
  * ranges, in addition to commands and/or data.
  */
@@ -429,25 +392,6 @@ struct vmdata_gpa_direct {
 	struct gpa_range range[1];
 } __packed;
 
-/* This is the format for a Additional Data Packet. */
-struct vmadditional_data {
-	struct vmpacket_descriptor d;
-	u64 total_bytes;
-	u32 offset;
-	u32 byte_cnt;
-	unsigned char data[1];
-} __packed;
-
-union vmpacket_largest_possible_header {
-	struct vmpacket_descriptor simple_hdr;
-	struct vmtransfer_page_packet_header xfer_page_hdr;
-	struct vmgpadl_packet_header gpadl_hdr;
-	struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr;
-	struct vmestablish_gpadl establish_gpadl_hdr;
-	struct vmteardown_gpadl teardown_gpadl_hdr;
-	struct vmdata_gpa_direct data_gpa_direct_hdr;
-};
-
 #define VMPACKET_DATA_START_ADDRESS(__packet)	\
 	(void *)(((unsigned char *)__packet) +	\
 	 ((struct vmpacket_descriptor)__packet)->offset8 * 8)
@@ -1661,6 +1605,7 @@ int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
 				  const guid_t *shv_host_servie_id);
 int vmbus_send_modifychannel(struct vmbus_channel *channel, u32 target_vp);
 void vmbus_set_event(struct vmbus_channel *channel);
+int vmbus_channel_set_cpu(struct vmbus_channel *channel, u32 target_cpu);
 
 /* Get the start of the ring buffer. */
 static inline void *