Merge tag 'hyperv-next-signed-20260826' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - Decrypt netvsc buffer on contiguous direct-map addresses (Kameron
   Carr)

 - Drop WS2012/2012R2 & Win8/8.1 Hyper-V support (Michael Kelley)

 - Use more meaningful errnos for hypercall status code (Hardik Garg)

 - Fix lost interrupts on CPU hot-unplug for Hyper-V PCI/MSI (Naman
   Jain)

 - Reserve more MSHV vectors for Linux root partition (Wei Liu)

* tag 'hyperv-next-signed-20260826' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  clocksource: hyper-v: Remove support for stimer interrupts in message mode
  scsi: storvsc: Remove support for storvsc protocol of old Hyper-V hosts
  hv_netvsc: Remove GPADL teardown special case for old Hyper-V hosts
  hv_sock: Remove check for old Hyper-V hosts
  Drivers: hv: Remove support for WS2012/2012R2 & Win8/8.1 version of Hyper-V
  hv_netvsc: Allocate send/receive buffers using vmbus_alloc_buffer()
  Drivers: hv: vmbus: Add vmbus_alloc_buffer()/vmbus_free_buffer() for CoCo VMs
  Drivers: hv: vmbus: add vmbus_establish_gpadl_caller_decrypted()
  Drivers: hv: vmbus: Skip VMBus module cleanup for non-nested root partition
  x86/hyperv: reserve more vectors
  PCI: hv: Set irq_retrigger callback for the Hyper-V PCI MSI irqchip
  Drivers: hv: Use meaningful errnos for hypercall status codes

1 files changed, 16 insertions, 4 deletions

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index a2b484679eb4..9e109d91aa14 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -70,7 +70,8 @@
  */
 enum hv_gpadl_type {
 	HV_GPADL_BUFFER,
-	HV_GPADL_RING
+	HV_GPADL_RING,
+	HV_GPADL_BUFFER_DECRYPTED
 };
 
 /* Single-page buffer */
@@ -260,9 +261,8 @@ static inline u32 hv_get_avail_to_write_percent(
  * 5 . 2  (Windows Server 2019, RS5)
  * 5 . 3  (Windows Server 2022)
  *
- * The WS2008 and WIN7 versions are listed here for
- * completeness but are no longer supported in the
- * Linux kernel.
+ * The WS2008, WIN7, WIN8, and WIN8_1 versions are listed here for
+ * completeness but are no longer supported in the Linux kernel.
  */
 
 #define VMBUS_MAKE_VERSION(MAJ, MIN)	((((u32)MAJ) << 16) | (MIN))
@@ -1205,9 +1205,21 @@ extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
 				      u32 size,
 				      struct vmbus_gpadl *gpadl);
 
+extern int vmbus_establish_gpadl_caller_decrypted(struct vmbus_channel *channel,
+						  void *kbuffer,
+						  u32 size,
+						  struct vmbus_gpadl *gpadl);
+
 extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
 				     struct vmbus_gpadl *gpadl);
 
+extern void *vmbus_alloc_buffer(struct vmbus_channel *channel,
+				u32 size,
+				struct page ***chunks_out,
+				u32 *chunk_cnt_out);
+
+extern void vmbus_free_buffer(void *addr, struct page **chunks, u32 chunk_cnt);
+
 void vmbus_reset_channel_cb(struct vmbus_channel *channel);
 
 extern int vmbus_recvpacket(struct vmbus_channel *channel,