diff options
| author | Roger Pau Monne <roger.pau@citrix.com> | 2021-11-04 11:48:34 +0100 |
|---|---|---|
| committer | Ian Jackson <iwj@xenproject.org> | 2021-11-08 15:10:05 +0000 |
| commit | 7379f9e10a3b13ec8bcea756384b2ace8af7064d (patch) | |
| tree | e3a290f2f7c7a6970131006d6402ab702f146ccb /docs | |
| parent | b36c23eada769f647e5352d5691f793be06afd62 (diff) | |
gnttab: allow setting max version per-domain
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.
Note the version is specified using 4 bits, which leaves room to
specify up to grant table version 15. Given that we only have 2 grant
table versions right now, and a new version is unlikely in the near
future using 4 bits seems more than enough.
xenstored stubdomains are limited to grant table v1 because the
current MiniOS code used to build them only has support for grants v1.
There are existing limits set for xenstored stubdomains at creation
time that already match the defaults in MiniOS.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Christian Lindig <christian.lindig@citrix.com>
Reviewed-by: Ian Jackson <iwj@xenproject.org>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Release-Acked-by: Ian Jackson <iwj@xenproject.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/man/xl.cfg.5.pod.in | 5 | ||||
| -rw-r--r-- | docs/man/xl.conf.5.pod.in | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index 55c4881205..b98d161398 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -580,6 +580,11 @@ to have. This value controls how many pages of foreign domains can be accessed via the grant mechanism by this domain. The default value is settable via L<xl.conf(5)>. +=item B<max_grant_version=NUMBER> + +Specify the maximum grant table version the domain is allowed to use. The +default value is settable via L<xl.conf(5)>. + =item B<nomigrate=BOOLEAN> Disable migration of this domain. This enables certain other features diff --git a/docs/man/xl.conf.5.pod.in b/docs/man/xl.conf.5.pod.in index b48e99131a..df20c08137 100644 --- a/docs/man/xl.conf.5.pod.in +++ b/docs/man/xl.conf.5.pod.in @@ -101,6 +101,12 @@ Sets the default value for the C<max_maptrack_frames> domain config value. Default: value of Xen command line B<gnttab_max_maptrack_frames> parameter (or its default value if unspecified). +=item B<max_grant_version=NUMBER> + +Sets the default value for the C<max_grant_version> domain config value. + +Default: maximum grant version supported by the hypervisor. + =item B<vif.default.script="PATH"> Configures the default hotplug script used by virtual network devices. |