On Friday, January 11, 2013 08:16:52 AM Yinghai Lu wrote: > On Fri, Jan 11, 2013 at 4:33 AM, Thomas Renninger <trenn at suse.de> wrote: ... > > - e820.nr_map = 0; > > + /* > > + * Remove all usable memory (this is for kdump), usable > > + * memory will be passed via memmap=X at Y parameter > > + */ > > + e820_remove_range_type(E820_RAM); > > We may need to keep exactmap intact. Why? Kexec/kdump should have been the only user? If older/current kexec calls still add ACPI maps via memmap=X#Y, they should already exist in the original e820 map and fall off or get glued to one region if (wrongly) overlapping via sanitize_map. > but could add another one like exact_ram_map > or extend to have memmap=exactmap=ram or etc. I would avoid that if anyhow possible because then you run into kexec vs kernel version problems. Maybe I should explicitly post (out of this thread) the patch to the kexec list. If nobody can come up with a strong reason, it should be ok? Thomas
