Modify arm64/Kconfig to enable kexec_file_load support.

Signed-off-by: AKASHI Takahiro <takahiro.aka...@linaro.org>
Cc: Catalin Marinas <catalin.mari...@arm.com>
Cc: Will Deacon <will.dea...@arm.com>
---
 arch/arm64/Kconfig | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7381eeb7ef8e..79ee27b8d2a0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -829,6 +829,16 @@ config KEXEC
          but it is independent of the system firmware.   And like a reboot
          you can start any kernel with it, not just Linux.
 
+config KEXEC_FILE
+       bool "kexec file based system call"
+       select KEXEC_CORE
+       select BUILD_BIN2C
+       ---help---
+         This is new version of kexec system call. This system call is
+         file based and takes file descriptors as system call argument
+         for kernel and initramfs as opposed to list of segments as
+         accepted by previous system call.
+
 config CRASH_DUMP
        bool "Build kdump crash kernel"
        help
-- 
2.16.2


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