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From: Julien Grall <julien@xen.org>
To: Roger Pau Monne <roger.pau@citrix.com>, xen-devel@lists.xenproject.org
Cc: Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>,
	Jan Beulich <jbeulich@suse.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Anthony PERARD <anthony.perard@citrix.com>,
	Juergen Gross <jgross@suse.com>,
	Christian Lindig <christian.lindig@citrix.com>,
	David Scott <dave@recoil.org>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH v2 0/6] gnttab: add per-domain controls
Date: Wed, 22 Sep 2021 13:57:02 +0500	[thread overview]
Message-ID: <69208166-2356-cc8a-4e78-2ce8d6cddcac@xen.org> (raw)
In-Reply-To: <20210922082123.54374-1-roger.pau@citrix.com>



On 22/09/2021 13:21, Roger Pau Monne wrote:
> Hello,

Hi Roger,

> First patch on the series is a trivial change to xenconsoled in order to
> use xenforeignmemory stable library in order to map the shared console
> ring instead of the unstable libxc interface. It's reviewed and ready to
> go in.
> 
> Patches 2 and 3 allow setting the host wide command line `gnttab` option
> on a per domain basis. That means selecting the max allowed grant table
> version and whether transitive grants are allowed.
> 
> The last 3 patches attempt to implement support for creating guests
> without a grant table. This requires some changes to xenstored in order
> to partially support guests without a valid ring interface, as the lack
> of grant table will prevent C xenstored from mapping the shared ring.
> Note this is not an issue for Ocaml xenstored, as it still uses the
> foreign memory interface to map the shared ring, and thus won't notice
> the lack of grant table support on the domain.

I find a bit odd that the Xenstore support is conditional to whether 
grant table is available. Are you expecting domains with no grant table 
to have no PV drivers (including PV shutdown)?

Cheers,

-- 
Julien Grall


  parent reply	other threads:[~2021-09-22  8:57 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22  8:21 [PATCH v2 0/6] gnttab: add per-domain controls Roger Pau Monne
2021-09-22  8:21 ` [PATCH v2 1/6] tools/console: use xenforeigmemory to map console ring Roger Pau Monne
2021-09-22  8:21 ` [PATCH v2 2/6] gnttab: allow setting max version per-domain Roger Pau Monne
2021-10-15  9:39   ` Jan Beulich
2021-10-15  9:48     ` Jan Beulich
2021-10-20  8:04       ` Roger Pau Monné
2021-10-20 10:57         ` Jan Beulich
2021-10-20 11:45           ` Juergen Gross
2021-10-20 13:00           ` Roger Pau Monné
2021-10-15 11:47   ` Jan Beulich
2021-10-20 11:58   ` Jan Beulich
2021-09-22  8:21 ` [PATCH v2 3/6] gnttab: allow per-domain control over transitive grants Roger Pau Monne
2021-09-22  9:28   ` Christian Lindig
2021-10-15 10:05   ` Jan Beulich
2021-10-20 10:14     ` Roger Pau Monné
2021-10-20 11:51       ` Jan Beulich
2021-10-15 11:46   ` Jan Beulich
2021-09-22  8:21 ` [PATCH v2 4/6] tools/xenstored: use atexit to close interfaces Roger Pau Monne
2021-09-22  8:21 ` [PATCH v2 5/6] tools/xenstored: partially handle domains without a shared ring Roger Pau Monne
2021-09-22  9:07   ` Julien Grall
2021-09-22  9:58     ` Roger Pau Monné
2021-09-22 10:23       ` Julien Grall
2021-09-22 12:34         ` Juergen Gross
2021-09-22 13:46           ` Julien Grall
2021-09-23  7:23             ` Roger Pau Monné
2021-09-23  7:56               ` Julien Grall
2021-10-20 14:48                 ` Julien Grall
2021-09-22  8:21 ` [PATCH v2 6/6] gnttab: allow disabling grant table per-domain Roger Pau Monne
2021-09-22  9:19   ` Julien Grall
2021-09-22  9:38     ` Juergen Gross
2021-09-23  8:41       ` Julien Grall
2021-10-15 11:51     ` Jan Beulich
2021-10-15 12:09   ` Jan Beulich
2021-09-22  8:57 ` Julien Grall [this message]
2021-09-22  9:39   ` [PATCH v2 0/6] gnttab: add per-domain controls Roger Pau Monné
2021-09-23  8:47     ` Julien Grall
2021-09-23 11:19       ` Roger Pau Monné
2021-09-24  2:30         ` Julien Grall
2021-09-24  6:21           ` Jan Beulich
2021-09-24  7:30             ` Julien Grall
2021-09-24  7:49               ` Jan Beulich
2021-09-24  7:46           ` Roger Pau Monné
2021-10-11  9:36 ` Roger Pau Monné
2021-10-11  9:52   ` Christian Lindig

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