linux-kernel - [PATCH v10 1/7] asm-generic: hyperv: Fix incorrect architecture dependencies

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Date:   Wed, 12 May 2021 10:37:41 -0700
From:   Michael Kelley <mikelley@...rosoft.com>
To:     will@...nel.org, catalin.marinas@....com, mark.rutland@....com,
        lorenzo.pieralisi@....com, sudeep.holla@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org, linux-efi@...r.kernel.org,
        arnd@...db.de, wei.liu@...nel.org, ardb@...nel.org,
        daniel.lezcano@...aro.org, kys@...rosoft.com
Cc:     mikelley@...rosoft.com
Subject: [PATCH v10 1/7] asm-generic: hyperv: Fix incorrect architecture dependencies

Move the declaration of hv_root_partition and hyperv_pcpu_input_arg
from the x86-specific mshyperv.h to the arch independent mshyperv.h
since they are used by arch independent code.  While here, add a
missing #include needed to compile correctly on ARM64.

Signed-off-by: Michael Kelley <mikelley@...rosoft.com>
---
 arch/x86/include/asm/mshyperv.h | 3 ---
 include/asm-generic/mshyperv.h  | 5 +++++
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index 67ff0d6..45c48b0 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -36,7 +36,6 @@ static inline u64 hv_get_register(unsigned int reg)
 extern int hyperv_init_cpuhp;
 
 extern void *hv_hypercall_pg;
-extern void  __percpu  **hyperv_pcpu_input_arg;
 extern void  __percpu  **hyperv_pcpu_output_arg;
 
 extern u64 hv_current_partition_id;
@@ -170,8 +169,6 @@ int hyperv_fill_flush_guest_mapping_list(
 		struct hv_guest_mapping_flush_list *flush,
 		u64 start_gfn, u64 end_gfn);
 
-extern bool hv_root_partition;
-
 #ifdef CONFIG_X86_64
 void hv_apic_init(void);
 void __init hv_init_spinlocks(void);
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index 9a000ba..22c92b8 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -22,6 +22,7 @@
 #include <linux/atomic.h>
 #include <linux/bitops.h>
 #include <linux/cpumask.h>
+#include <linux/nmi.h>
 #include <asm/ptrace.h>
 #include <asm/hyperv-tlfs.h>
 
@@ -151,6 +152,8 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
 extern int vmbus_interrupt;
 extern int vmbus_irq;
 
+extern bool hv_root_partition;
+
 #if IS_ENABLED(CONFIG_HYPERV)
 /*
  * Hypervisor's notion of virtual processor ID is different from
@@ -161,6 +164,8 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
 extern u32 *hv_vp_index;
 extern u32 hv_max_vp_index;
 
+extern void  __percpu  **hyperv_pcpu_input_arg;
+
 /* Sentinel value for an uninitialized entry in hv_vp_index array */
 #define VP_INVAL	U32_MAX
 
-- 
1.8.3.1