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 at 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