> On Jun 27, 2017, at 5:53 PM, Russell King <rmk at armlinux.org.uk> wrote: > >> On Tue, Jun 27, 2017 at 11:36:43AM +0900, Hoeun Ryu wrote: >> We have some cases when we would like to use different dtb from the >> running system when using kexec and I think that's why kexec-tools >> supports --dtb command line option. >> >> For example, I have the second kernel for the crash dump with different >> kernel configuration and the different dtb from the running system. I'd >> like to exclude some nodes/properties from dtb like memory reservations >> or unnecessary devices to keep the second kernel/dtb minimal. >> >> The concatenated zImage for arm has a benefit (whether it's intended or >> not) to make it possible for users to merge multiple boot images into a >> simple single file. >> What I'd like to do is just to support the concatenated zImage so that >> users can use --load(-panic) zImage_with_dtb_from_the_running_system >> instead of --load(-panic) zImage --dtb >> different_dtb_from_the_running_system. > > Don't you mean --load(-panic) zImage_with_different_dtb_from_the_running_system > ? > I'm sorry. This is what I mean. > So, what you seem to be saying is that you think it's easier for the user > to do this: > > # cat zImage some-other-dtb > zImage.dtb > # kexec --load-panic zImage.dtb > > rather than: > > # kexec --load-panic zImage --dtb some-other-dtb > > ? Right. > What about the initrd? Do you want to append that as well? I have thought of it. I think It would be better to have it. But I think this is the first step to do so. > > -- > Russell King
