On Thu, Apr 17, 2014 at 02:24:20PM +0800, WANG Chao wrote: > On 04/14/14 at 10:55pm, WANG Chao wrote: > > Hi, All > > > > This patchset enables passing memory map via E820 map on x86 platform instead > > of memmap=exactmap. It's a better design and will solve the following problem > > so far: > > > > - kernel cmdline is limited resource and large machines tend to have many > > memory ranges that may excceed kernel cmdline limit size. > > - kASLR doesn't work with memmap=exactmap, because kASLR happens early than > > user defined memmap=exactmap takes effect. > > > > Unfortunately, saved_max_pfn still got its user out there (calgry pci, it looks > > like the only one). So for backward compatibility, I'm introducing a new option > > --pass-memmap-cmdline to force kexec-tools to pass memmap=exactmap, the old way. > > > > This patchset contains massive updates from the previous one. I take some > > suggestions from reviewers. I try to split the changes into smaller pieces and > > keep the whole change as minimal as I can so it wouldn't be too harsh to review > > the patch. > > > > Any comment is appreciate! > > Hi, Linn > > Thanks for testing the patch in the past. Do you have chance to test > this update? > > This updated patchset changed too much and I want things to work as it's > used to be on your prototype machine with large number of memory ranges. > > Thanks in advance! > WANG Chao Tested the series on a system with 200+ entries in the map; both kexec and kdump (with and without --pass-memmap-cmdline). Thanks for the patches. Tested-by: Linn Crosetto <linn at hp.com>
