Merge tag 'hyperv-next-signed-20210629' of git://git.kernel.org/pub/scm/linux/kernel...

Pull hyperv updates from Wei Liu:
 "Just a few minor enhancement patches and bug fixes"

* tag 'hyperv-next-signed-20210629' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  PCI: hv: Add check for hyperv_initialized in init_hv_pci_drv()
  Drivers: hv: Move Hyper-V extended capability check to arch neutral code
  drivers: hv: Fix missing error code in vmbus_connect()
  x86/hyperv: fix logical processor creation
  hv_utils: Fix passing zero to 'PTR_ERR' warning
  scsi: storvsc: Use blk_mq_unique_tag() to generate requestIDs
  Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer
  hv_balloon: Remove redundant assignment to region_start

diff --cc arch/x86/kernel/cpu/mshyperv.c
Simple merge

diff --cc drivers/Makefile
Simple merge

diff --cc drivers/hv/hv_common.c
index 0000000,f0053c7..7f42da9
mode 000000,100644..100644
--- /dev/null
--- 2/drivers/hv/hv_common.c
+++ b/drivers/hv/hv_common.c
@@@ -1,0 -1,66 +1,66 @@@
 -       * can be virtually mapped, making them imcompatible with
+ // SPDX-License-Identifier: GPL-2.0
+ 
+ /*
+  * Architecture neutral utility routines for interacting with
+  * Hyper-V. This file is specifically for code that must be
+  * built-in to the kernel image when CONFIG_HYPERV is set
+  * (vs. being in a module) because it is called from architecture
+  * specific code under arch/.
+  *
+  * Copyright (C) 2021, Microsoft, Inc.
+  *
+  * Author : Michael Kelley <mikelley@microsoft.com>
+  */
+ 
+ #include <linux/types.h>
+ #include <linux/export.h>
+ #include <linux/bitfield.h>
+ #include <asm/hyperv-tlfs.h>
+ #include <asm/mshyperv.h>
+ 
+ 
+ /* Bit mask of the extended capability to query: see HV_EXT_CAPABILITY_xxx */
+ bool hv_query_ext_cap(u64 cap_query)
+ {
+       /*
+        * The address of the 'hv_extended_cap' variable will be used as an
+        * output parameter to the hypercall below and so it should be
+        * compatible with 'virt_to_phys'. Which means, it's address should be
+        * directly mapped. Use 'static' to keep it compatible; stack variables
++       * can be virtually mapped, making them incompatible with
+        * 'virt_to_phys'.
+        * Hypercall input/output addresses should also be 8-byte aligned.
+        */
+       static u64 hv_extended_cap __aligned(8);
+       static bool hv_extended_cap_queried;
+       u64 status;
+ 
+       /*
+        * Querying extended capabilities is an extended hypercall. Check if the
+        * partition supports extended hypercall, first.
+        */
+       if (!(ms_hyperv.priv_high & HV_ENABLE_EXTENDED_HYPERCALLS))
+               return false;
+ 
+       /* Extended capabilities do not change at runtime. */
+       if (hv_extended_cap_queried)
+               return hv_extended_cap & cap_query;
+ 
+       status = hv_do_hypercall(HV_EXT_CALL_QUERY_CAPABILITIES, NULL,
+                                &hv_extended_cap);
+ 
+       /*
+        * The query extended capabilities hypercall should not fail under
+        * any normal circumstances. Avoid repeatedly making the hypercall, on
+        * error.
+        */
+       hv_extended_cap_queried = true;
+       if (!hv_result_success(status)) {
+               pr_err("Hyper-V: Extended query capabilities hypercall failed 0x%llx\n",
+                      status);
+               return false;
+       }
+ 
+       return hv_extended_cap & cap_query;
+ }
+ EXPORT_SYMBOL_GPL(hv_query_ext_cap);