Re: [RFC PATCH] xen/memory: Introduce a hypercall to provide unallocated space

[Oleksandr <olekstysh@xxxxxxxxx>]

On 05.08.21 08:58, Jan Beulich wrote:

Hi Jan.

> On 04.08.2021 21:18, Oleksandr wrote:
> > On 03.08.21 15:53, Jan Beulich wrote:
> > > On 30.07.2021 18:13, Oleksandr wrote:
> > > > - Where that range should be located in guest address space, should that
> > > > range be the same for all domains (how GUEST_GNTTAB_BASE(SIZE) for example)
> > > > or it should be calculated based on actual guest_ram_base(size) for a
> > > > particular domain?
> > > The default size may well be fixed or amount-of-memory-dependent, but
> > > I think there will need to be a way to enlarge the region for guests
> > > with particular needs.
> > Well, but why we couldn't just make a large chunk by default which would
> > satisfy all guests, as it was mentioned earlier in this thread "as it
> > doesn't consume resource when not being used"
> > to avoid an extra configuration option, etc?
> Because experience tells me that no static upper limit will ever please
> everyone.
ok, thank you for the explanation.


> Jan
--
Regards,

Oleksandr Tyshchenko