diff options
| author | Palmer Dabbelt <palmer@sifive.com> | 2018-08-20 11:32:10 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2018-08-20 11:32:10 -0700 |
| commit | 7a3b1bf70b37b3797c8570b82a473fd5749fab8d (patch) | |
| tree | 2807965222f04149b60332bece178ad99b9c06e8 /arch/riscv/include | |
| parent | 66eb957df4c7f60afb2bf19873f12214a2b3b62b (diff) | |
| parent | e45c7aca4914efc8bcdd8fc231efadcdc87ae2e5 (diff) | |
RISC-V: Fix sys_riscv_flush_icache
This contains a pair of patches that together fix sys_riscv_flush_icache
on all systems:
* The first enables sys_riscv_flush_icache() for non-SMP systems.
* The second fixes a bug in our syscall header that caused
sys_riscv_flush_icache to never get generated.
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/unistd.h | 5 | ||||
| -rw-r--r-- | arch/riscv/include/asm/vdso.h | 2 | ||||
| -rw-r--r-- | arch/riscv/include/uapi/asm/syscalls.h | 13 |
3 files changed, 13 insertions, 7 deletions
diff --git a/arch/riscv/include/asm/unistd.h b/arch/riscv/include/asm/unistd.h index 080fb28061de..0caea01d5cca 100644 --- a/arch/riscv/include/asm/unistd.h +++ b/arch/riscv/include/asm/unistd.h @@ -11,6 +11,11 @@ * GNU General Public License for more details. */ +/* + * There is explicitly no include guard here because this file is expected to + * be included multiple times. See uapi/asm/syscalls.h for more info. + */ + #define __ARCH_WANT_SYS_CLONE #include <uapi/asm/unistd.h> #include <uapi/asm/syscalls.h> diff --git a/arch/riscv/include/asm/vdso.h b/arch/riscv/include/asm/vdso.h index 541544d64c33..ec6180a4b55d 100644 --- a/arch/riscv/include/asm/vdso.h +++ b/arch/riscv/include/asm/vdso.h @@ -38,8 +38,6 @@ struct vdso_data { (void __user *)((unsigned long)(base) + __vdso_##name); \ }) -#ifdef CONFIG_SMP asmlinkage long sys_riscv_flush_icache(uintptr_t, uintptr_t, uintptr_t); -#endif #endif /* _ASM_RISCV_VDSO_H */ diff --git a/arch/riscv/include/uapi/asm/syscalls.h b/arch/riscv/include/uapi/asm/syscalls.h index 818655b0d535..206dc4b0f6ea 100644 --- a/arch/riscv/include/uapi/asm/syscalls.h +++ b/arch/riscv/include/uapi/asm/syscalls.h @@ -1,10 +1,13 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Copyright (C) 2017 SiFive + * Copyright (C) 2017-2018 SiFive */ -#ifndef _ASM__UAPI__SYSCALLS_H -#define _ASM__UAPI__SYSCALLS_H +/* + * There is explicitly no include guard here because this file is expected to + * be included multiple times in order to define the syscall macros via + * __SYSCALL. + */ /* * Allows the instruction cache to be flushed from userspace. Despite RISC-V @@ -20,7 +23,7 @@ * caller. We don't currently do anything with the address range, that's just * in there for forwards compatibility. */ +#ifndef __NR_riscv_flush_icache #define __NR_riscv_flush_icache (__NR_arch_specific_syscall + 15) -__SYSCALL(__NR_riscv_flush_icache, sys_riscv_flush_icache) - #endif +__SYSCALL(__NR_riscv_flush_icache, sys_riscv_flush_icache) |