Re: [Qemu-devel] [PATCH v4 4/7] pc: fix QEMU crashing when more than ~50 memory hotplugged

[Paolo Bonzini]

On 09/07/2015 15:06, Michael S. Tsirkin wrote:
> > QEMU asserts in vhost due to hitting vhost backend limit
> > on number of supported memory regions.
> > 
> > Describe all hotplugged memory as one continuos range
> > to vhost with linear 1:1 HVA->GPA mapping in backend.
> > 
> > Signed-off-by: Igor Mammedov <address@hidden>
>
> Hmm - a bunch of work here to recombine MRs that memory listener
> interface breaks up.  In particular KVM could benefit from this too (on
> workloads that change the table a lot).  Can't we teach memory core to
> pass hva range as a single continuous range to memory listeners?

Memory listeners are based on memory regions, not HVA ranges.

Paolo