[PATCH 00/10] arm64 kexec kernel patches V5

Geoff Levand geoff at infradead.org
Thu Nov 13 15:50:48 PST 2014

On Thu, 2014-11-13 at 16:37 +0800, Dave Young wrote:
> In your kexec-tools code, by default it will create dtb1 from procfs, as for external
> --dtb it will be dtb2 for comparing with dtb1.
> Since dtb1 is a must so it will not work without /proc/device-tree.

I changed that to allow for no /proc/device-tree if --dtb is passed
since it will also allow a kernel built with CONFIG_PROC_FS=n to do
kexec re-boot.

Please try it and let me know.

> There had some discussion about this in the thread. But I think we have no
> conclusion where to go.
> There maybe below possibilities:
> 1) unflattern dtb both for EFI/acpi booting even if acpi boot does not need it.
> 2) copy the bootloader passed dtb stub to somewhere, and export the stub to
>  userspace ie. in debugfs or procfs
>  like /proc/saved_dtb 
> Thoughts to continue the discuss?

Some progress has been made, let's see what they come up with.


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