[PATCH v2 0/4] qemu: Add support for free-page-reporting

Michal Privoznik mprivozn at redhat.com
Wed Oct 14 14:15:20 UTC 2020

On 10/14/20 4:07 PM, David Hildenbrand wrote:

> Note: prealloc=yes is a bad choice in this environment. It
> contradicts memory overcommit - what we want to optimize with
> free page reporting. You allocate all VM memory to throw it away
> once the guest is up. Is there an option to turn this of with
> hugetlbfs? I hope so.

Is this something that should be addressed on qemu side? Since I'm 
writing a follow up patches for libvirt I can forbid this combination in 

> I'll try reproducing upstream and send a BUG report upstream, ccing you. Thanks!

Thank you very much!


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