Re: [PATCH] Reserve memory for kdump kernel within RMO region

Bernhard Walle
2009-11-27T18:39:20Z

M. Mohan Kumar schrieb:
> Hi,
>
> As of now the kdump kernel base is fixed to be 32MB. The intention of
> this patch is to modify that behaviour (for relocatable kernels)
>
> * Regular kernel size may exceed 32MB, in this case we can't have kdump
> kernelbase as 32MB.
>
> * crashkernel=auto also assumes that kdump kernelbase as 32MB, and it
> may also fail in reserving memory for kdump kernel.

I'm not opposed to remove the 32MB restriction, but I would like to make
the behaviour independent of CONFIG_RELOCATABLE like it's on x86:

- Use 32M if one specifies xxx@32M
- Use preferrably 32M, but fall back to another address if one
specifies xxx or xxx@0M.

I don't see any problem with that. But it would make behaviour equal
accross platforms.

Regards,
Bernhard