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Groups > linux.kernel > #1416605

[PATCH 7/9] generic syscalls: wire up memory protection keys syscalls

From Dave Hansen <dave@sr71.net>
Newsgroups linux.kernel
Subject [PATCH 7/9] generic syscalls: wire up memory protection keys syscalls
Date 2016-06-07 22:50 +0200
Message-ID <rHw6K-7py-9@gated-at.bofh.it> (permalink)
References <rHw6J-7py-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Dave Hansen <dave.hansen@linux.intel.com>

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>
Cc: Arnd Bergmann <arnd@arndb.de>
---

 b/include/uapi/asm-generic/unistd.h |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff -puN include/uapi/asm-generic/unistd.h~pkeys-119-syscalls-generic include/uapi/asm-generic/unistd.h
--- a/include/uapi/asm-generic/unistd.h~pkeys-119-syscalls-generic	2016-06-07 13:22:21.703083776 -0700
+++ b/include/uapi/asm-generic/unistd.h	2016-06-07 13:22:21.707083961 -0700
@@ -724,9 +724,19 @@ __SYSCALL(__NR_copy_file_range, sys_copy
 __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 293
 
 /*
  * All syscalls below here should go away really,
_

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Thread

[PATCH 0/9] [v2] System Calls for Memory Protection Keys Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  [PATCH 7/9] generic syscalls: wire up memory protection keys syscalls Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
    Re: [PATCH 7/9] generic syscalls: wire up memory protection keys syscalls Arnd Bergmann <arnd@arndb.de> - 2016-06-07 23:30 +0200
  [PATCH 6/9] x86, pkeys: add pkey set/get syscalls Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  [PATCH 2/9] mm: implement new pkey_mprotect() system call Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  [PATCH 4/9] x86: wire up mprotect_key() system call Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  [PATCH 3/9] x86, pkeys: make mprotect_key() mask off additional vm_flags Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  [PATCH 1/9] x86, pkeys: add fault handling for PF_PK page fault bit Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  [PATCH 5/9] x86, pkeys: allocation/free syscalls Dave Hansen <dave@sr71.net> - 2016-06-07 22:50 +0200
  Re: [PATCH 0/9] [v2] System Calls for Memory Protection Keys "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com> - 2016-06-08 11:30 +0200
    Re: [PATCH 0/9] [v2] System Calls for Memory Protection Keys Dave Hansen <dave@sr71.net> - 2016-06-08 19:40 +0200

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