Re: [Xen-devel] [PATCH for-4.13 2/2] Rationalize max_grant_frames and max_maptrack_frames handling

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

George Dunlap writes ("[PATCH for-4.13 2/2] Rationalize max_grant_frames and 
max_maptrack_frames handling"):
> Xen used to have single, system-wide limits for the number of grant
> frames and maptrack frames a guest was allowed to create.  Increasing
> or decreasing this single limit on the Xen command-line would change
> the limit for all guests on the system.

If I am not mistaken, this is an important change to have.

I have seen reports of users who ran out of grant/maptrack frames
because of updates to use multiring protocols etc.  The error messages
are not very good and the recommended workaround has been to increase
the default limit on the hypervisor command line.

It is important that we don't break that workaround!

Thanks,
Ian.

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