[PATCH 2/2] x86: move gds_ucode_mitigated() declaration to header

From: Arnd Bergmann <arnd@kernel.org>
To: x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Josh Poimboeuf <jpoimboe@kernel.org>,
	Daniel Sneddon <daniel.sneddon@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>, "H. Peter Anvin" <hpa@zytor.com>,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	Michal Luczaj <mhal@rbox.co>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH 2/2] x86: move gds_ucode_mitigated() declaration to header
Date: Wed,  9 Aug 2023 15:05:00 +0200	[thread overview]
Message-ID: <20230809130530.1913368-2-arnd@kernel.org> (raw)
In-Reply-To: <20230809130530.1913368-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

The declaration got placed in the .c file of the caller, but that
causes a warning for the definition:

arch/x86/kernel/cpu/bugs.c:682:6: error: no previous prototype for 'gds_ucode_mitigated' [-Werror=missing-prototypes]

Move it to a header where both sides can observe it instead.

Fixes: 81ac7e5d74174 ("KVM: Add GDS_NO support to KVM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/x86/include/asm/processor.h | 2 ++
 arch/x86/kvm/x86.c               | 2 --
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index e5b0e23a7a830..01786f3e289cb 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -731,4 +731,6 @@ bool arch_is_platform_page(u64 paddr);
 #define arch_is_platform_page arch_is_platform_page
 #endif
 
+extern bool gds_ucode_mitigated(void);
+
 #endif /* _ASM_X86_PROCESSOR_H */
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 17b1ee7f839c3..a7d97cde19678 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -318,8 +318,6 @@ u64 __read_mostly host_xcr0;
 
 static struct kmem_cache *x86_emulator_cache;
 
-extern bool gds_ucode_mitigated(void);
-
 /*
  * When called, it means the previous get/set msr reached an invalid msr.
  * Return true if we want to ignore/silent this failed msr access.
-- 
2.39.2

