Re: Instability issues with NetBSD-9, xen-4.11 and the xbdb backend driver

[mlelstv%serpens.de@localhost (Michael van Elst)]

buhrow%nfbcal.org@localhost (Brian Buhrow) writes:

>	Hello.  Here is a simple patch that I think addresses the issue I'm
>seeing with the dom0 causing domu's to panic with biodon2 already errors
>when errors occur with the hypervisor granting process.

Yes, but probably not correct.

Linux undos the partial grant on failure, it also handles the
special status GNTST_eagain (-12) where it retries individual pages
that failed several times with exponential backoff. This status
is returned for pages that are paged out.

No idea why we get the general error instead of a more specific one.

-- 
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."