The following commit has been merged into the timers/vdso branch of tip:
Commit-ID: bbef8e2c29c32f048fac8e07f884f827d028f1da
Gitweb: https://git.kernel.org/tip/bbef8e2c29c32f048fac8e07f884f827d028f1da
Author: Thomas Gleixner <tglx@kernel.org>
AuthorDate: Sun, 18 Jan 2026 15:45:40 +01:00
Committer: Thomas Gleixner <tglx@kernel.org>
CommitterDate: Sun, 18 Jan 2026 15:54:17 +01:00
x86/percpu: Make CONFIG_USE_X86_SEG_SUPPORT work with sparse
Now that sparse builds enforce the usage of typeof_unqual() the casts in
__raw_cpu_read/write() cause sparse to emit tons of false postive
warnings:
warning: cast removes address space '__percpu' of expression
Address this by annotating the casts with __force.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/87v7gz0yjv.ffs@tglx
Closes: https://lore.kernel.org/oe-kbuild-all/202601181733.YZOf9XU3-lkp@intel.com/
---
arch/x86/include/asm/percpu.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 725d0ef..c55058f 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -137,12 +137,12 @@
#define __raw_cpu_read(size, qual, pcp) \
({ \
- *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)); \
+ *(qual __my_cpu_type(pcp) * __force)__my_cpu_ptr(&(pcp)); \
})
-#define __raw_cpu_write(size, qual, pcp, val) \
-do { \
- *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)) = (val); \
+#define __raw_cpu_write(size, qual, pcp, val) \
+do { \
+ *(qual __my_cpu_type(pcp) * __force)__my_cpu_ptr(&(pcp)) = (val); \
} while (0)
#define __raw_cpu_read_const(pcp) __raw_cpu_read(, , pcp)