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From: Jan Beulich <jbeulich@suse.com>
To: Roger Pau Monne <roger.pau@citrix.com>
Cc: Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>,
	Julien Grall <julien@xen.org>,
	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>,
	xen-devel@lists.xenproject.org
Subject: Re: [PATCH v2 2/6] gnttab: allow setting max version per-domain
Date: Wed, 20 Oct 2021 13:58:59 +0200	[thread overview]
Message-ID: <0fddbb3a-bf7e-2a39-e20e-7994b3d74d2f@suse.com> (raw)
In-Reply-To: <20210922082123.54374-3-roger.pau@citrix.com>

On 22.09.2021 10:21, Roger Pau Monne wrote:
> Introduce a new domain create field so that toolstack can specify the
> maximum grant table version usable by the domain. This is plumbed into
> xl and settable by the user as max_grant_version.
> 
> Previously this was only settable on a per host basis using the
> gnttab command line option.

One further remark: Already with the command line control is was
questionable in how far people are aware that PV guests may need to
use v2, if the host has memory beyond the 16Tb address boundary. I
wonder whether permitting to restrict to v1 on such hosts isn't
counterproductive. I guess at the very least a warning may want
logging.

Jan



  parent reply	other threads:[~2021-10-20 11:59 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 [this message]
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 ` [PATCH v2 0/6] gnttab: add per-domain controls Julien Grall
2021-09-22  9:39   ` 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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