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Commit 5563ae9b authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'riscv-for-linus-4.19-mw1' of... 

Merge tag 'riscv-for-linus-4.19-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V fixes from Palmer Dabbelt:
 "This contains a pair of fixes to the RISC-V port:

   - The removal of our compat.h, which didn't do anything.

   - Fixes to sys_riscv_flush_icache to ensure it actually shows up.

     We're going to just call this a bug in the ABI, as it was always
     supposed to be there.

  I've given these a simple build+boot test, both individually and as
  the actual tag"

* tag 'riscv-for-linus-4.19-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  riscv: Delete asm/compat.h
  RISC-V: Don't use a global include guard for uapi/asm/syscalls.h
  RISC-V: Define sys_riscv_flush_icache when SMP=n
parents 452938cb 7a3b1bf7

arch/riscv/include/asm/Kbuild

+1 −0
Original line number Diff line number Diff line 
generic-y += bugs.h

generic-y += cacheflush.h

generic-y += checksum.h

generic-y += compat.h

generic-y += cputime.h

generic-y += device.h

generic-y += div64.h

arch/riscv/include/asm/compat.h

deleted100644 → 0
+0 −29
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2012 ARM Ltd.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef __ASM_COMPAT_H

#define __ASM_COMPAT_H

#ifdef CONFIG_COMPAT



#if defined(CONFIG_64BIT)

#define COMPAT_UTS_MACHINE "riscv64\0\0"

#elif defined(CONFIG_32BIT)

#define COMPAT_UTS_MACHINE "riscv32\0\0"

#else

#error "Unknown RISC-V base ISA"

#endif



#endif /*CONFIG_COMPAT*/

#endif /*__ASM_COMPAT_H*/

arch/riscv/include/asm/unistd.h

+5 −0
Original line number Diff line number Diff line
@@ -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>

arch/riscv/include/asm/vdso.h

+0 −2
Original line number Diff line number Diff line
@@ -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 */

arch/riscv/include/uapi/asm/syscalls.h

+8 −5
Original line number Diff line number Diff line 
/* 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)