diff options
| author | Brian Gerst <brgerst@gmail.com> | 2020-03-13 15:51:32 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-03-21 16:03:20 +0100 |
| commit | cc42c045af1ff4dee875196f8fe7d6ed1f29ea64 (patch) | |
| tree | a56e67651ad9ce1a480d735272d353ede76cd096 | |
| parent | 27dd84fafcd5e3c565164bb303fe8ec8ef59e147 (diff) | |
x86/entry/64: Move sys_ni_syscall stub to common.c
so it can be available to multiple syscall tables. Also directly return
-ENOSYS instead of bouncing to the generic sys_ni_syscall().
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200313195144.164260-7-brgerst@gmail.com
| -rw-r--r-- | arch/x86/entry/common.c | 7 | ||||
| -rw-r--r-- | arch/x86/entry/syscall_64.c | 7 | ||||
| -rw-r--r-- | arch/x86/include/asm/syscall_wrapper.h | 3 |
3 files changed, 10 insertions, 7 deletions
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c index 9747876980b5..149bf54501ff 100644 --- a/arch/x86/entry/common.c +++ b/arch/x86/entry/common.c @@ -438,3 +438,10 @@ __visible long do_fast_syscall_32(struct pt_regs *regs) #endif } #endif + +#ifdef CONFIG_X86_64 +SYSCALL_DEFINE0(ni_syscall) +{ + return -ENOSYS; +} +#endif diff --git a/arch/x86/entry/syscall_64.c b/arch/x86/entry/syscall_64.c index adf619a856e8..058dc1b73e96 100644 --- a/arch/x86/entry/syscall_64.c +++ b/arch/x86/entry/syscall_64.c @@ -8,13 +8,6 @@ #include <asm/asm-offsets.h> #include <asm/syscall.h> -extern asmlinkage long sys_ni_syscall(void); - -SYSCALL_DEFINE0(ni_syscall) -{ - return sys_ni_syscall(); -} - #define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *); #define __SYSCALL_X32(nr, sym, qual) __SYSCALL_64(nr, sym, qual) #include <asm/syscalls_64.h> diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h index 1d96ccebc0d2..0f126e40a464 100644 --- a/arch/x86/include/asm/syscall_wrapper.h +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -8,6 +8,9 @@ struct pt_regs; +extern asmlinkage long __x64_sys_ni_syscall(const struct pt_regs *regs); +extern asmlinkage long __ia32_sys_ni_syscall(const struct pt_regs *regs); + /* Mapping of registers to parameters for syscalls on x86-64 and x32 */ #define SC_X86_64_REGS_TO_ARGS(x, ...) \ __MAP(x,__SC_ARGS \ |