Re: [PATCH] Only reset e820 once, even with multiple memmap=exactmap params

Vivek Goyal
2013-01-10T17:03:03Z

On Thu, Jan 10, 2013 at 08:53:18AM -0800, Yinghai Lu wrote:
> On Thu, Jan 10, 2013 at 6:26 AM, Vivek Goyal <vgoyal@redhat.com> wrote:
> >
> > This happens only in case of kdump and not kexec. In case of kdump
> > we want second kernel to use only selected memory areas.
> >
> > In fact this is one improvement area. Instead of using memmap= entries
> > in kdump case, we should probably modify the e820 map passed in
> > zero page and get rid of memmap= entries.
>
> then how the kdump kernel get saved_max_pfn?
>

Oh, I forgot about that. May be we can pass saved_max_pfn on command line
instead of passing all memmap= entries.

Thanks
Vivek