generic syscalls: Wire up memory protection keys syscalls (a60f7b69) · Commits · 戴 / test

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>

include/linux/syscalls.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -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

include/uapi/asm-generic/unistd.h

+11 −1

Original line number	Diff line number	Diff line
		@@ -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,

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