Re: [Xen-devel] Assigning contiguous memory to a driver domain

[Goswin von Brederlow <goswin-v-b@xxxxxx>]

"Jan Beulich" <JBeulich@xxxxxxxxxx> writes:

>> Well, we do have 2 driver domains in Qubes: one is the netvm (NIC
>> drivers), and the other one is Dom0 (storage, video, etc). BTW, how is
>> it that the drivers in Dom0 never has this problem with allocating
>> continues memory (even if we keep xen free memory = 0)?
>
> Merely because post-boot there would not usually be allocations.

It is also called fragmentation.

dom0 gets its memory at the start and probably all in one big
chunk. Other domains have to use the bits and pices that happen to be
free when the domain is started.

MfG
        Goswin

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