On Tue, 1 Mar 2016 16:02:28 +0800 Minfei Huang <mnfhuang at gmail.com> wrote: > For some arch, kexec shall map the reserved pages, then use them, when > we try to start the kdump service. Which architectures are these, by the way? > kexec may return directly, without unmaping the reserved pages, if it > fails during starting service. To fix it, we make a pair of map/unmap > reserved pages both in generic path and error path. I'm having trouble understanding the urgency of this patch. Do you think it is needed in 4.5? -stable? If so, why? Thanks.