Commit dce0aa3b authored by H. Peter Anvin (Intel)'s avatar H. Peter Anvin (Intel) Committed by Ingo Molnar
Browse files

x86/syscall: Unconditionally prototype {ia32,x32}_sys_call_table[] 



Even if these APIs are disabled, and the arrays therefore do not
exist, having the prototypes allows us to use IS_ENABLED() rather than
using #ifdefs.

If something ends up trying to actually *use* these arrays a linker
error will ensue.

Signed-off-by: default avatarH. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210510185316.3307264-4-hpa@zytor.com
parent 3e5e7f77

arch/x86/include/asm/syscall.h

+5 −6
Original line number Diff line number Diff line
@@ -21,13 +21,12 @@ extern const sys_call_ptr_t sys_call_table[]; 


#if defined(CONFIG_X86_32)

#define ia32_sys_call_table sys_call_table

#endif



#if defined(CONFIG_IA32_EMULATION)

#else

/*

 * These may not exist, but still put the prototypes in so we

 * can use IS_ENABLED().

 */

extern const sys_call_ptr_t ia32_sys_call_table[];

#endif



#ifdef CONFIG_X86_X32_ABI

extern const sys_call_ptr_t x32_sys_call_table[];

#endif