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

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

ok, thank you for the explanation.



Oleksandr Tyshchenko



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