Commit-ID: 45e29d119e9923ff14dfb840e3482bef1667bbfb Gitweb: https://git.kernel.org/tip/45e29d119e9923ff14dfb840e3482bef1667bbfb Author: Andy Lutomirski <l...@kernel.org> AuthorDate: Wed, 3 Jul 2019 13:34:05 -0700 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Mon, 22 Jul 2019 10:31:22 +0200
x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long Currently, it's an int. This is bizarre. Fortunately, the code using it still works: ~__X32_SYSCALL_BIT is also int, so, if nr is unsigned long, then C kindly sign-extends the ~__X32_SYSCALL_BIT part, and it actually results in the desired value. This is far more subtle than it deserves to be. Syscall numbers are, for all practical purposes, unsigned long, so make __X32_SYSCALL_BIT be unsigned long. Signed-off-by: Andy Lutomirski <l...@kernel.org> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Link: https://lkml.kernel.org/r/99b0d83ad891c67105470a1a6b63243fd63a5061.1562185330.git.l...@kernel.org --- arch/x86/include/uapi/asm/unistd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/uapi/asm/unistd.h b/arch/x86/include/uapi/asm/unistd.h index 30d7d04d72d6..196fdd02b8b1 100644 --- a/arch/x86/include/uapi/asm/unistd.h +++ b/arch/x86/include/uapi/asm/unistd.h @@ -3,7 +3,7 @@ #define _UAPI_ASM_X86_UNISTD_H /* x32 syscall flag bit */ -#define __X32_SYSCALL_BIT 0x40000000 +#define __X32_SYSCALL_BIT 0x40000000UL #ifndef __KERNEL__ # ifdef __i386__
