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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>
This commit is contained in:
Arnd Bergmann 2018-12-30 22:01:52 +01:00
parent 78594b9599
commit 4ab65ba7a5
3 changed files with 4 additions and 1 deletions
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1
arch/arm/tools/syscall.tbl
View File

@ -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

2
arch/arm64/include/asm/unistd.h
View File

@ -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

2
arch/arm64/include/asm/unistd32.h
View File

@ -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