From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Date: Fri, 18 Jan 2019 16:18:13 +0000 Subject: [PATCH v2 07/29] ARM: add kexec_file_load system call number Message-Id: <20190118161835.2259170-8-arnd@arndb.de> List-Id: References: <20190118161835.2259170-1-arnd@arndb.de> In-Reply-To: <20190118161835.2259170-1-arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: y2038@lists.linaro.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Cc: dalias@libc.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, jcmvbkbc@gmail.com, deepa.kernel@gmail.com, hpa@zytor.com, sparclinux@vger.kernel.org, linux-s390@vger.kernel.org, mpe@ellerman.id.au, deller@gmx.de, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, geert@linux-m68k.org, benh@kernel.crashing.org, firoz.khan@linaro.org, mattst88@gmail.com, fenghua.yu@intel.com, Arnd Bergmann , heiko.carstens@de.ibm.com, linux-fsdevel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, luto@kernel.org, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, monstr@monstr.eu, tony.luck@intel.com, linux-parisc@vger.kernel.org, netdev@vger.kernel.org, linux-mips@vger.kernel.org, paul.burton@mips.com, ebiederm@xmission.com, linux-alpha@vger.kernel.org, schwidefsky@de.ibm.com, akpm@linux-foundation.orglinu 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. Signed-off-by: Arnd Bergmann --- arch/arm/tools/syscall.tbl | 1 + arch/arm64/include/asm/unistd.h | 2 +- arch/arm64/include/asm/unistd32.h | 2 ++ 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl index 86de9eb34296..20ed7e026723 100644 --- a/arch/arm/tools/syscall.tbl +++ b/arch/arm/tools/syscall.tbl @@ -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 diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index 261216c3336e..2c30e6f145ff 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -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 diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index f15bcbacb8f6..8ca1d4c304f4 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -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 -- 2.20.0