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

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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: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210510185316.3307264-4-hpa@zytor.com
This commit is contained in:
H. Peter Anvin (Intel) 2021-05-10 11:53:12 -07:00 committed by Ingo Molnar
parent 3e5e7f7736
commit dce0aa3b2e
1 changed files with 5 additions and 6 deletions
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11
arch/x86/include/asm/syscall.h
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@ -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