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generic syscalls: Wire up memory protection keys syscalls

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These new syscalls are implemented as generic code, so enable them for
architectures like arm64 which use the generic syscall table.

According to Arnd:

  Even if the support is x86 specific for the forseeable future, it may be
  good to reserve the number just in case.  The other architecture specific
  syscall lists are usually left to the individual arch maintainers, most a
  lot of the newer architectures share this table.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arch@vger.kernel.org
Cc: Dave Hansen <dave@sr71.net>
Cc: mgorman@techsingularity.net
Cc: linux-api@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: luto@kernel.org
Cc: akpm@linux-foundation.org
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/20160729163018.505A6875@viggo.jf.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Dave Hansen 2016-07-29 09:30:18 -07:00 committed by Thomas Gleixner
parent f9afc6197e
commit a60f7b69d9
2 changed files with 19 additions and 1 deletions
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8
include/linux/syscalls.h
View file

@ -898,4 +898,12 @@ asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
unsigned long prot, int pkey);
asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
asmlinkage long sys_pkey_free(int pkey);
//asmlinkage long sys_pkey_get(int pkey, unsigned long flags);
//asmlinkage long sys_pkey_set(int pkey, unsigned long access_rights,
// unsigned long flags);
#endif

12
include/uapi/asm-generic/unistd.h
View file

@ -724,9 +724,19 @@ __SYSCALL(__NR_copy_file_range, sys_copy_file_range)
__SC_COMP(__NR_preadv2, sys_preadv2, compat_sys_preadv2)
#define __NR_pwritev2 287
__SC_COMP(__NR_pwritev2, sys_pwritev2, compat_sys_pwritev2)
#define __NR_pkey_mprotect 288
__SYSCALL(__NR_pkey_mprotect, sys_pkey_mprotect)
#define __NR_pkey_alloc 289
__SYSCALL(__NR_pkey_alloc, sys_pkey_alloc)
#define __NR_pkey_free 290
__SYSCALL(__NR_pkey_free, sys_pkey_free)
#define __NR_pkey_get 291
//__SYSCALL(__NR_pkey_get, sys_pkey_get)
#define __NR_pkey_set 292
//__SYSCALL(__NR_pkey_set, sys_pkey_set)
#undef __NR_syscalls
#define __NR_syscalls 288
#define __NR_syscalls 291
/*
* All syscalls below here should go away really,