Messages in this thread | | | Date | Wed, 07 May 2008 15:46:16 -0700 (PDT) | Subject | Re: sparc64 bootup regression... | From | David Miller <> |
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From: "Rafael J. Wysocki" <rjw@sisk.pl> Date: Thu, 8 May 2008 00:09:45 +0200
> On Wednesday, 30 of April 2008, Andrew Morton wrote: > > On Tue, 29 Apr 2008 23:12:41 -0700 (PDT) David Miller <davem@davemloft.net> wrote: > > > > > > > > This commit causes bootup failures on sparc64: > > > > > > commit 86f6dae1377523689bd8468fed2f2dd180fc0560 > > > Author: Yasunori Goto <y-goto@jp.fujitsu.com> > > > Date: Mon Apr 28 02:13:33 2008 -0700 > > > > > > memory hotplug: allocate usemap on the section with pgdat > > > > > > Usemaps are allocated on the section which has pgdat by this. > > > > > > Because usemap size is very small, many other sections usemaps are allocated > > > on only one page. If a section has usemap, it can't be removed until removing > > > other sections. This dependency is not desirable for memory removing. > > > > > > Pgdat has similar feature. When a section has pgdat area, it must be the last > > > section for removing on the node. So, if section A has pgdat and section B > > > has usemap for section A, Both sections can't be removed due to dependency > > > each other. > > > > > > To solve this issue, this patch collects usemap on same section with pgdat. > > > If other sections doesn't have any dependency, this section will be able to be > > > removed finally. > > > > Thanks. Does a straightforward revert fix it? If so, we could do that while heads > > are being scratched. > > Has that been reverted already?
Yes.
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