Red Hat Bugzilla – Bug 527670
Huge Page Backed Memory Failed for Kqemu Guests
Last modified: 2009-10-07 07:10:17 EDT
Created attachment 363941 [details]
guest XML file
Description of problem:
After configured hugepages for a kqemu guest, there is no sign of hugepages usage when starting the guest.
# cat /proc/meminfo
Hugepagesize: 2048 kB
Does hugepages suppose to be working there?
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. configure hugepages in the host.
2. virsh edit <guest> to use hugepages backed memory.
3. virsh start <guest>.
4. check /proc/meminfo
HugePages_Free is not reduced.
HugePages_Free should be reduced.
Do you really mean kqemu and not kvm ?
We do not ship kqemu in Fedora, and upstream QEMU has deleted all code relating to kqemu so its use is not supported in any way, nor likely tobe in the future.
(In reply to comment #1)
> Do you really mean kqemu and not kvm ?
> We do not ship kqemu in Fedora, and upstream QEMU has deleted all code relating
> to kqemu so its use is not supported in any way, nor likely tobe in the future.
The module was downloaded here,
Ok, well kqemu doesn't use hugepages, and since its dead upstream, we don't intend to enhance it todo so.