From: Arnd Bergmann <arnd@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>
Cc: Arnd Bergmann <arnd@arndb.de>, "H. Peter Anvin" <hpa@zytor.com>,
"Jason A. Donenfeld" <Jason@zx2c4.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] x86: coco: mark cc_mask as __maybe_unused
Date: Tue, 4 Mar 2025 15:33:34 +0100 [thread overview]
Message-ID: <20250304143340.928503-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
When extra warnings are enabled, the cc_mask definition in asm/coco.h
causes a build failure with gcc:
arch/x86/include/asm/coco.h:28:18: error: 'cc_mask' defined but not used [-Werror=unused-const-variable=]
28 | static const u64 cc_mask = 0;
Mark this one as __maybe_unused.
Fixes: a0a8d15a798b ("x86/tdx: Preserve shared bit on mprotect()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/x86/include/asm/coco.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/coco.h b/arch/x86/include/asm/coco.h
index aa6c8f8ca958..9e9204cfca6f 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -25,7 +25,7 @@ u64 cc_mkdec(u64 val);
void cc_random_init(void);
#else
#define cc_vendor (CC_VENDOR_NONE)
-static const u64 cc_mask = 0;
+static const __maybe_unused u64 cc_mask = 0;
static inline u64 cc_mkenc(u64 val)
{
--
2.39.5
next reply other threads:[~2025-03-04 14:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-04 14:33 Arnd Bergmann [this message]
2025-03-04 19:55 ` [PATCH] x86: coco: mark cc_mask as __maybe_unused Sathyanarayanan Kuppuswamy
2025-03-05 9:02 ` Kirill A. Shutemov
2025-03-05 10:44 ` Ingo Molnar
2025-03-05 22:17 ` Borislav Petkov
2025-03-05 22:20 ` Borislav Petkov
2025-03-05 22:45 ` Arnd Bergmann
2025-03-05 22:50 ` Borislav Petkov
2025-03-06 5:38 ` Huang, Kai
2025-03-10 13:10 ` Arnd Bergmann
2025-03-10 13:50 ` Arnd Bergmann
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