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author | David Vrabel <david.vrabel@citrix.com> | 2013-10-14 10:25:39 +0200 |
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committer | Jan Beulich <jbeulich@suse.com> | 2013-10-14 10:25:39 +0200 |
commit | a77eb86f44e52c5aea7f0ba7023600c043a9cdcd (patch) | |
tree | f999a21db3c0a9f170ce107b5a609ba2c74c1e6e /tools/libxl/libxl_dom.c | |
parent | 783b9e67f963bbb068b68fea4426131858145b0f (diff) | |
download | xen-a77eb86f44e52c5aea7f0ba7023600c043a9cdcd.tar.gz xen-a77eb86f44e52c5aea7f0ba7023600c043a9cdcd.tar.bz2 xen-a77eb86f44e52c5aea7f0ba7023600c043a9cdcd.zip |
libxl,xl: add max_event_channels option to xl configuration file
Add the 'max_event_channels' option to the xl configuration file to
limit the number of event channels that domain may use.
Plumb this option through to libxl via a new libxl_build_info field
and call xc_domain_set_max_evtchn() in the post build stage of domain
creation.
A new LIBXL_HAVE_BUILDINFO_EVENT_CHANNELS #define indicates that this
new field is available.
The default value of 1023 limits the domain to using the minimum
amount of global mapping pages and at most 5 xenheap pages.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'tools/libxl/libxl_dom.c')
-rw-r--r-- | tools/libxl/libxl_dom.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c index 6e2252afbe..356f920a6d 100644 --- a/tools/libxl/libxl_dom.c +++ b/tools/libxl/libxl_dom.c @@ -268,6 +268,13 @@ int libxl__build_post(libxl__gc *gc, uint32_t domid, if (rc) return rc; + rc = xc_domain_set_max_evtchn(ctx->xch, domid, info->event_channels); + if (rc) { + LOG(ERROR, "Failed to set event channel limit to %d (%d)", + info->event_channels, rc); + return ERROR_FAIL; + } + libxl_cpuid_apply_policy(ctx, domid); if (info->cpuid != NULL) libxl_cpuid_set(ctx, domid, info->cpuid); |