Re: [PATCH 3/5] vhost: support upto 509 memory regions

Paolo Bonzini
2015-06-18T11:50:45Z

On 18/06/2015 13:41, Michael S. Tsirkin wrote:
> On Thu, Jun 18, 2015 at 01:39:12PM +0200, Igor Mammedov wrote:
>> Lets leave decision upto users instead of making them live with
>> crashing guests.
>
> Come on, let's fix it in userspace.

It's not trivial to fix it in userspace. Since QEMU uses RCU there
isn't a single memory map to use for a linear gpa->hva map.

I find it absurd that we're fighting over 12K of memory.

Paolo