[PATCH RESEND] x86/kexec: Carry forward the boot DTB on kexec

[Baoquan He]

On 07/29/25 at 11:21am, Brian Mak wrote:
> The kexec_file_load syscall on x86 currently does not support passing
> a device tree blob to the new kernel.
> 
> To add support for this, we copy the behavior of ARM64 and PowerPC and
> copy the current boot's device tree blob for use in the new kernel. We
> do this on x86 by passing the device tree blob as a setup_data entry in
> accordance with the x86 boot protocol.

I see how, but no why. Why do we need to add DTB for x86?