[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH for-4.13 2/2] Rationalize max_grant_frames and max_maptrack_frames handling
> -----Original Message----- > From: Xen-devel <xen-devel-bounces@xxxxxxxxxxxxxxxxxxxx> On Behalf Of Ian > Jackson > Sent: 26 November 2019 17:36 > To: George Dunlap <george.dunlap@xxxxxxxxxx> > Cc: Juergen Gross <jgross@xxxxxxxx>; Stefano Stabellini > <sstabellini@xxxxxxxxxx>; Julien Grall <julien@xxxxxxx>; Wei Liu > <wl@xxxxxxx>; Paul Durrant <paul@xxxxxxx>; Andrew Cooper > <Andrew.Cooper3@xxxxxxxxxx>; Konrad Rzeszutek Wilk > <konrad.wilk@xxxxxxxxxx>; Marek Marczykowski-Górecki > <marmarek@xxxxxxxxxxxxxxxxxxxxxx>; Hans van Kranenburg <hans@xxxxxxxxxxx>; > Jan Beulich <jbeulich@xxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx > Subject: Re: [Xen-devel] [PATCH for-4.13 2/2] Rationalize max_grant_frames > and max_maptrack_frames handling > > 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. > It is, and many thanks to George for picking this up. > 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! Alas it has apparently been broken for several releases now :-( Paul > > Thanks, > Ian. > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxxx > https://lists.xenproject.org/mailman/listinfo/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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