linux-kernel - [PATCH] x86/fred: fix building without CONFIG

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Message-Id: <20240216202527.2493264-1-arnd@kernel.org>
Date: Fri, 16 Feb 2024 21:25:14 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Xin Li <xin@...or.com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Andy Lutomirski <luto@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] x86/fred: fix building without CONFIG_KVM

From: Arnd Bergmann <arnd@...db.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@...db.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