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Commit 4ab65ba7 authored Dec 30, 2018 by Arnd Bergmann

ARM: add kexec_file_load system call number



A couple of architectures including arm64 already implement the
kexec_file_load system call, on many others we have assigned a system
call number for it, but not implemented it yet.

Adding the number in arch/arm/ lets us use the system call on arm64
systems in compat mode, and also reduces the number of differences
between architectures. If we want to implement kexec_file_load on ARM
in the future, the number assignment means that kexec tools can already
be built with the now current set of kernel headers.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

parent 78594b95

arch/arm/tools/syscall.tbl

+1 −0

Original line number	Diff line number	Diff line
		@@ -415,3 +415,4 @@
		398 common rseq sys_rseq
		399 common io_pgetevents sys_io_pgetevents
		400 common migrate_pages sys_migrate_pages
		401 common kexec_file_load sys_kexec_file_load

arch/arm64/include/asm/unistd.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -44,7 +44,7 @@
		#define __ARM_NR_compat_set_tls (__ARM_NR_COMPAT_BASE + 5)
		#define __ARM_NR_COMPAT_END (__ARM_NR_COMPAT_BASE + 0x800)

		#define __NR_compat_syscalls 401
		#define __NR_compat_syscalls 402
		#endif

		#define __ARCH_WANT_SYS_CLONE

arch/arm64/include/asm/unistd32.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -823,6 +823,8 @@ __SYSCALL(__NR_rseq, sys_rseq)
		__SYSCALL(__NR_io_pgetevents, compat_sys_io_pgetevents)
		#define __NR_migrate_pages 400
		__SYSCALL(__NR_migrate_pages, compat_sys_migrate_pages)
		#define __NR_kexec_file_load 401
		__SYSCALL(__NR_kexec_file_load, sys_kexec_file_load)

		/*
		* Please add new compat syscalls above this comment and update