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| author | Michal Suchanek <msuchanek@suse.de> | 2018-03-28 15:15:19 +0200 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2018-03-30 10:45:49 +0200 |
| commit | b2b05352ae5e9b027fa9b166f47e97ae8fdf7db6 (patch) | |
| tree | f2e86cd6189f65b2c5bc7117489bc072815ef746 | |
| parent | 20fea93e6cafe5ecbf4c6eacf82ec69058c51948 (diff) | |
| download | kexec-tools-b2b05352ae5e9b027fa9b166f47e97ae8fdf7db6.tar.gz | |
kexec: Document -s, -c and -a options in the man page
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
| -rw-r--r-- | kexec/kexec.8 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kexec/kexec.8 b/kexec/kexec.8 index e0131b4e..fb8a4c9c 100644 --- a/kexec/kexec.8 +++ b/kexec/kexec.8 @@ -144,6 +144,26 @@ Load the new kernel for use on panic. Specify that the new kernel is of this .I type. .TP +.BI \-s\ (\-\-kexec-file-syscall) +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). +.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. + +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 +configuration. + +KEXEC_LOAD is required for some kernel image formats and on architectures that +do not implement KEXEC_FILE_LOAD. +.TP .B \-u\ (\-\-unload) Unload the current .B kexec |