kexec: create a new config option CONFIG_KEXEC_FILE for new syscall

[karo-tx-linux.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5d0bf1aa9dcb6d68fd39f395dcbef9f89954cbc0..778178f4c7d132c15f4f7700b0ad31a20ea7d24b 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1585,9 +1585,6 @@ source kernel/Kconfig.hz
 
 config KEXEC
        bool "kexec system call"
-       select BUILD_BIN2C
-       select CRYPTO
-       select CRYPTO_SHA256
        ---help---
          kexec is a system call that implements the ability to shutdown your
          current kernel, and to start another kernel.  It is like a reboot
@@ -1602,9 +1599,22 @@ config KEXEC
          interface is strongly in flux, so no good recommendation can be
          made.
 
+config KEXEC_FILE
+       bool "kexec file based system call"
+       select BUILD_BIN2C
+       depends on KEXEC
+       depends on X86_64
+       depends on CRYPTO=y
+       depends on CRYPTO_SHA256=y
+       ---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 KEXEC_VERIFY_SIG
        bool "Verify kernel signature during kexec_file_load() syscall"
-       depends on KEXEC
+       depends on KEXEC_FILE
        ---help---
          This option makes kernel signature verification mandatory for
          kexec_file_load() syscall. If kernel is signature can not be