Dave McCracken
2009-May-26 17:50 UTC
[Xen-devel] [PATCH] Add support for superpages (hugepages) in PV domain take two
New version fixes the problem of requiring "superpages" to be specified in the config file. Now it just defaults to "0" if it''s not present. -------- This patch adds the option "superpages" to the domain configuration file. If it is set, the domain is populated using 2M pages. This code does not support fallback to small pages. If the domain can not be created with 2M pages, the create will fail. The patch also includes support for saving and restoring domains with the superpage flag set. However, if a domain has freed small pages within its physical page array and then extended the array, the restore will fill in those freed pages. It will then attempt to allocate more than its memory limit and will fail. This is significant because apparently Linux does this during boot, thus a freshly booted Linux image can not be saved and restored successfully. Dave McCracken Oracle Corp. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Keir Fraser
2009-May-26 21:12 UTC
Re: [Xen-devel] [PATCH] Add support for superpages (hugepages) in PV domain take two
On 26/05/2009 18:50, "Dave McCracken" <dcm@mccr.org> wrote:> New version fixes the problem of requiring "superpages" to be specified in the > config file. Now it just defaults to "0" if it''s not present.The original patch is checked in. Please send just the delta. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Dave McCracken
2009-May-26 22:27 UTC
Re: [Xen-devel] [PATCH] Add support for superpages (hugepages) in PV domain take two
On Tuesday 26 May 2009, Keir Fraser wrote:> > New version fixes the problem of requiring "superpages" to be specified > > in the config file. Now it just defaults to "0" if it''s not present. > > The original patch is checked in. Please send just the delta.Sorry. I didn''t realize it''d already been picked up. Here''s just the delta between the two patches. Dave McCracken Oracle Corp. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel