From a77eb86f44e52c5aea7f0ba7023600c043a9cdcd Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 14 Oct 2013 10:25:39 +0200 Subject: 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 Acked-by: Ian Campbell Acked-by: Keir Fraser --- tools/libxl/libxl_create.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools/libxl/libxl_create.c') diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c index c5ec577127..1b320d3c92 100644 --- a/tools/libxl/libxl_create.c +++ b/tools/libxl/libxl_create.c @@ -208,6 +208,9 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc, libxl_defbool_setdefault(&b_info->disable_migrate, false); + if (!b_info->event_channels) + b_info->event_channels = 1023; + switch (b_info->type) { case LIBXL_DOMAIN_TYPE_HVM: if (b_info->shadow_memkb == LIBXL_MEMKB_DEFAULT) -- cgit v1.2.3