summaryrefslogtreecommitdiff
path: root/kexec
diff options
context:
space:
mode:
authorAhelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>2023-02-03 00:10:18 +0100
committerSimon Horman <horms@kernel.org>2023-02-07 16:04:09 +0100
commit29fe5067ed07452bcbbbe5fcd0b4e4215f598014 (patch)
tree2e2b9cb78e10daca50c0d853f57b95faae093aea /kexec
parente63fefd4fc355f29d839ca47484b0f8070e38ccb (diff)
downloadkexec-tools-29fe5067ed07452bcbbbe5fcd0b4e4215f598014.tar.gz
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>
Diffstat (limited to 'kexec')
-rw-r--r--kexec/kexec.84
-rw-r--r--kexec/kexec.c8
2 files changed, 6 insertions, 6 deletions
diff --git a/kexec/kexec.8 b/kexec/kexec.8
index 3ebede6..66453b8 100644
--- a/kexec/kexec.8
+++ b/kexec/kexec.8
@@ -151,14 +151,14 @@ Specify that the new kernel is of this
Specify that the new KEXEC_FILE_LOAD syscall should be used exclusively.
.TP
.BI \-c\ (\-\-kexec-syscall)
-Specify that the old KEXEC_LOAD syscall should be used exclusively (the default).
+Specify that the old KEXEC_LOAD syscall should be used exclusively.
.TP
.BI \-a\ (\-\-kexec-syscall-auto)
Try the new KEXEC_FILE_LOAD syscall first and when it is not supported or the
kernel does not understand the supplied image fall back to the old KEXEC_LOAD
interface.
-There is no one single interface that always works.
+There is no one single interface that always works, so this is the default.
KEXEC_FILE_LOAD is required on systems that use locked-down secure boot to
verify the kernel signature. KEXEC_LOAD may be also disabled in the kernel
diff --git a/kexec/kexec.c b/kexec/kexec.c
index 0e92d96..36bb2ad 100644
--- a/kexec/kexec.c
+++ b/kexec/kexec.c
@@ -1049,11 +1049,11 @@ void usage(void)
" to original kernel.\n"
" -s, --kexec-file-syscall Use file based syscall for kexec operation\n"
" -c, --kexec-syscall Use the kexec_load syscall for for compatibility\n"
- " with systems that don't support -s (default)\n"
+ " with systems that don't support -s\n"
" -a, --kexec-syscall-auto Use file based syscall for kexec and fall\n"
" back to the compatibility syscall when file based\n"
" syscall is not supported or the kernel did not\n"
- " understand the image\n"
+ " understand the image (default)\n"
" -d, --debug Enable debugging to help spot a failure.\n"
" -S, --status Return 1 if the type (by default crash) is loaded,\n"
" 0 if not.\n"
@@ -1407,8 +1407,8 @@ int main(int argc, char *argv[])
int do_ifdown = 0, skip_ifdown = 0;
int do_unload = 0;
int do_reuse_initrd = 0;
- int do_kexec_file_syscall = 0;
- int do_kexec_fallback = 0;
+ int do_kexec_file_syscall = 1;
+ int do_kexec_fallback = 1;
int skip_checks = 0;
int do_status = 0;
void *entry = 0;