kexec: make -a the default

AFAICT, there's no downside to this, and running into this each time
I want to kexec (and, presumably, a significant chunk of the population,
since lockdown is quite popular) on some machines,
then going to the manual, then finding out I want the /auto/ flag(!)
is quite annoying:
  # kexec -l /boot/vmlinuz-6.1.0-3-amd64 --initrd /boot/initrd.img-6.1.0-3-amd64 --reuse-cmdline
  kexec_load failed: Operation not permitted
  entry       = 0x46eff7760 flags = 0x3e0000
  nr_segments = 7
  segment[0].buf   = 0x557cd303efa0
  segment[0].bufsz = 0x70
  segment[0].mem   = 0x100000
  segment[0].memsz = 0x1000
  segment[1].buf   = 0x557cd3046fe0
  segment[1].bufsz = 0x190
  segment[1].mem   = 0x101000
  segment[1].memsz = 0x1000
  segment[2].buf   = 0x557cd303f6e0
  segment[2].bufsz = 0x30
  segment[2].mem   = 0x102000
  segment[2].memsz = 0x1000
  segment[3].buf   = 0x7f658fa37010
  segment[3].bufsz = 0x12a51b5
  segment[3].mem   = 0x46a55a000
  segment[3].memsz = 0x12a6000
  segment[4].buf   = 0x7f6590ce1210
  segment[4].bufsz = 0x7e99e0
  segment[4].mem   = 0x46b800000
  segment[4].memsz = 0x377c000
  segment[5].buf   = 0x557cd3039350
  segment[5].bufsz = 0x42fa
  segment[5].mem   = 0x46eff2000
  segment[5].memsz = 0x5000
  segment[6].buf   = 0x557cd3032000
  segment[6].bufsz = 0x70e0
  segment[6].mem   = 0x46eff7000
  segment[6].memsz = 0x9000

Closes: https://bugs.debian.org/1030248
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Signed-off-by: Simon Horman <horms@kernel.org>
2 files changed