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| author | Mark Rutland <mark.rutland@arm.com> | 2018-07-11 14:56:42 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-07-12 14:40:39 +0100 |
| commit | 27d83e68f307ee55b70fdfdc7a9ba3f25f276189 (patch) | |
| tree | 3e2db6811a0af538dd88b40381e5a63b26f5327c /arch/arm64/kernel/sys.c | |
| parent | 3085e1645e23888125224f66a710077cdb03106a (diff) | |
| download | linux-27d83e68f307ee55b70fdfdc7a9ba3f25f276189.tar.bz2 | |
arm64: introduce syscall_fn_t
In preparation for invoking arbitrary syscalls from C code, let's define
a type for an arbitrary syscall, matching the parameter passing rules of
the AAPCS.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/sys.c')
| -rw-r--r-- | arch/arm64/kernel/sys.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index 31045f3fed92..7f0907261269 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -25,7 +25,9 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/syscalls.h> + #include <asm/cpufeature.h> +#include <asm/syscall.h> asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, @@ -52,13 +54,13 @@ asmlinkage long sys_rt_sigreturn(void); #define sys_personality sys_arm64_personality #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = sym, +#define __SYSCALL(nr, sym) [nr] = (syscall_fn_t)sym, /* * The sys_call_table array must be 4K aligned to be accessible from * kernel/entry.S. */ -void * const sys_call_table[__NR_syscalls] __aligned(4096) = { - [0 ... __NR_syscalls - 1] = sys_ni_syscall, +const syscall_fn_t sys_call_table[__NR_syscalls] __aligned(4096) = { + [0 ... __NR_syscalls - 1] = (syscall_fn_t)sys_ni_syscall, #include <asm/unistd.h> }; |