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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-05 11:53:05 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-04-05 16:59:38 +0200 |
| commit | f8781c4a226319fe60e652118b90cf094ccfe747 (patch) | |
| tree | 1c496211debfc33f955021c62898da4c08f052cd /arch/x86/include/asm/syscalls.h | |
| parent | ebeb8c82ffaf94435806ff0b686fffd41dd410b5 (diff) | |
| download | blackbird-obmc-linux-f8781c4a226319fe60e652118b90cf094ccfe747.tar.gz blackbird-obmc-linux-f8781c4a226319fe60e652118b90cf094ccfe747.zip | |
syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64
Removing CONFIG_SYSCALL_PTREGS from arch/x86/Kconfig and simply selecting
ARCH_HAS_SYSCALL_WRAPPER unconditionally on x86-64 allows us to simplify
several codepaths.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180405095307.3730-7-linux@dominikbrodowski.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/syscalls.h')
| -rw-r--r-- | arch/x86/include/asm/syscalls.h | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index e4ad93c05f02..d4d18d94695c 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -19,10 +19,10 @@ /* kernel/ioport.c */ long ksys_ioperm(unsigned long from, unsigned long num, int turn_on); -#ifndef CONFIG_SYSCALL_PTREGS -/* - * If CONFIG_SYSCALL_PTREGS is enabled, a different syscall calling convention - * is used. Do not include these -- invalid -- prototypes then +#ifdef CONFIG_X86_32 +/* + * These definitions are only valid on pure 32-bit systems; x86-64 uses a + * different syscall calling convention */ asmlinkage long sys_ioperm(unsigned long, unsigned long, int); asmlinkage long sys_iopl(unsigned int); @@ -38,7 +38,6 @@ asmlinkage long sys_set_thread_area(struct user_desc __user *); asmlinkage long sys_get_thread_area(struct user_desc __user *); /* X86_32 only */ -#ifdef CONFIG_X86_32 /* kernel/signal.c */ asmlinkage long sys_sigreturn(void); @@ -48,16 +47,5 @@ struct vm86_struct; asmlinkage long sys_vm86old(struct vm86_struct __user *); asmlinkage long sys_vm86(unsigned long, unsigned long); -#else /* CONFIG_X86_32 */ - -/* X86_64 only */ -/* kernel/process_64.c */ -asmlinkage long sys_arch_prctl(int, unsigned long); - -/* kernel/sys_x86_64.c */ -asmlinkage long sys_mmap(unsigned long, unsigned long, unsigned long, - unsigned long, unsigned long, unsigned long); - #endif /* CONFIG_X86_32 */ -#endif /* CONFIG_SYSCALL_PTREGS */ #endif /* _ASM_X86_SYSCALLS_H */ |
