From: Uros Bizjak <ubizjak@gmail.com>
Date: Mon, 4 Dec 2023 21:02:31 +0000 (+0100)
Subject: x86/percpu: Avoid sparse warning with cast to named address space
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3a1d3829e193c091475ceab481c5f8deab385023;p=linux.git

x86/percpu: Avoid sparse warning with cast to named address space

Teach sparse about __seg_fs and __seg_gs named address space
qualifiers to to avoid warnings about unexpected keyword at
the end of cast operator.

Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20231204210320.114429-3-ubizjak@gmail.com
Closes: https://lore.kernel.org/oe-kbuild-all/202310080853.UhMe5iWa-lkp@intel.com/
---

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 3859abad19ec9..e56a37886143a 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -36,6 +36,11 @@
 
 #ifdef CONFIG_CC_HAS_NAMED_AS
 
+#ifdef __CHECKER__
+#define __seg_gs		__attribute__((address_space(__seg_gs)))
+#define __seg_fs		__attribute__((address_space(__seg_fs)))
+#endif
+
 #ifdef CONFIG_X86_64
 #define __percpu_seg_override	__seg_gs
 #else