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.