Re: [Minios-devel] high number of shared pages

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Juergen Gross, on mar. 12 sept. 2017 10:55:30 +0200, wrote:
> On 12/09/17 10:49, Samuel Thibault wrote:
> > maximilien roux, on mar. 12 sept. 2017 08:18:46 +0000, wrote:
> >> I am trying to share memory between two minios-based domains. When I try to
> >> share more than 495 pages, the mapping of the 495th pages always fail.
> > 
> > I guess you reached this limit which you could increase:
> > 
> > gnttab.c:#define NR_GRANT_FRAMES 4
> 
> I don't think so. One grant entry needs only 8 bytes.

Ah, right.

And DEMAND_MAP_PAGES is way beyond 495.

I'm out of immediate ideas, I guess more debugging is needed.

Samuel

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