[libvirt] [PATCH] Add huge page support to libvirt..
Mark McLoughlin
markmc at redhat.com
Thu Jul 23 07:27:28 UTC 2009
Hey,
For anyone interested, there is more background here:
https://fedoraproject.org/wiki/Features/KVM_Huge_Page_Backed_Memory
On Wed, 2009-07-22 at 21:25 -0400, john cooper wrote:
> This patch allows passing of a "-mem-path <arg>"
> flag to qemu for support of huge page backed
> guests. A guest may request this option via
> specifying:
>
> <hugepage>on</hugepage>
Other options include:
- <hugepages/>
- <memory hugepages="yes">XXXXX</memory>
> in its domain definition xml file. The request
> for huge page backing will be attempted within
> libvirt if the host system has indicated a
> hugetlbfs mount point in qemu.conf, for example:
>
> hugepage_mount = "/hugetlbfs"
I'd suggest /dev/hugepages as the default - /hugetlbfs has an seriously
unstandard whiff about it
Apart from that, the patch looks good to me - it needs to be re-based
onto latest master, but the conflict is no big deal.
Cheers,
Mark.
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