kexec: Add option to fall back to KEXEC_LOAD when KEXEC_FILE_LOAD is not supported

Not all architectures implement KEXEC_FILE_LOAD. However, on some
archiectures KEXEC_FILE_LOAD is required when secure boot is enabled in
locked-down mode. Previously users had to select the KEXEC_FILE_LOAD
syscall with undocumented -s option. However, if they did pass the
option kexec would fail on architectures that do not support it.

So add an -a option that tries KEXEC_FILE_LOAD and when it is not
supported tries KEXEC_LOAD.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Simon Horman <horms@verge.net.au>

0 files changed, 0 insertions, 0 deletions