[PATCH -mm 2/2] kexec jump -v11: save/restore device state
ying.huang at intel.com
Thu Jun 12 21:18:52 EDT 2008
On Thu, 2008-06-12 at 09:02 -0400, Vivek Goyal wrote:
> Few things I don't understand.
> - Are you saying that hibernated image will be saved in initrd
> (rootfs.gz)? But that saving is only in RAM, we never write back
> it to disk?
No. Hibernated image should be saved in a dedicated raw partition as you
> - I thought we probably have to dedicate a raw partition kind of thing
> for saving image and then modify boot loader command line to something
> similar to, "resume=partition". Then initrd can go hunting for image
> in respective partition (as specified by command line parameter) and if
> image is not available then continue with normal boot.
Yes. But the boot-loader command line only need to be changed during
system install or hibernation setup. We need not change the location of
"hibernation partition" frequently.
So I think one boot-loader command line is sufficient for:
- normal boot
- normal boot a system to be hibernated
- boot helper system to restore the hibernated system
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