[PATCH] x86/fred: fix building without CONFIG_KVM

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

Some constants are only defined if KVM is enabled:

arch/x86/entry/entry_fred.c:117:9: error: use of undeclared identifier 'POSTED_INTR_VECTOR'
  117 |         SYSVEC(POSTED_INTR_VECTOR,              kvm_posted_intr_ipi),
      |                ^
arch/x86/entry/entry_fred.c:118:9: error: use of undeclared identifier 'POSTED_INTR_WAKEUP_VECTOR'
  118 |         SYSVEC(POSTED_INTR_WAKEUP_VECTOR,       kvm_posted_intr_wakeup_ipi),
      |                ^
arch/x86/entry/entry_fred.c:119:9: error: use of undeclared identifier 'POSTED_INTR_NESTED_VECTOR'
  119 |         SYSVEC(POSTED_INTR_NESTED_VECTOR,       kvm_posted_intr_nested_ipi),
      |                ^

Hiding the references behind the same preprocessor conditional is
probably the best fix here.

Fixes: 14619d912b65 ("x86/fred: FRED entry/exit and dispatch code")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/x86/entry/entry_fred.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/entry/entry_fred.c b/arch/x86/entry/entry_fred.c
index ac120cbdaaf2..660b7f7f9a79 100644
--- a/arch/x86/entry/entry_fred.c
+++ b/arch/x86/entry/entry_fred.c
@@ -114,9 +114,11 @@ static idtentry_t sysvec_table[NR_SYSTEM_VECTORS] __ro_after_init = {
 
 	SYSVEC(IRQ_WORK_VECTOR,			irq_work),
 
+#if IS_ENABLED(CONFIG_KVM)
 	SYSVEC(POSTED_INTR_VECTOR,		kvm_posted_intr_ipi),
 	SYSVEC(POSTED_INTR_WAKEUP_VECTOR,	kvm_posted_intr_wakeup_ipi),
 	SYSVEC(POSTED_INTR_NESTED_VECTOR,	kvm_posted_intr_nested_ipi),
+#endif
 };
 
 static bool fred_setup_done __initdata;
-- 
2.39.2