Mailing List Archive

From: Paul Durrant <pdurrant@amazon.com>

...to control setting the domain create flag XEN_DOMCTL_CDF_disable_fifo.

Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Signed-off-by: Eslam Elnikety <elnikety@amazon.com>
---
Cc: Ian Jackson <iwj@xenproject.org>
Cc: Wei Liu <wl@xen.org>
Cc: Anthony PERARD <anthony.perard@citrix.com>

v4:
- New in v4
---
tools/include/libxl.h | 8 ++++++++
tools/libs/light/libxl_create.c | 5 +++++
tools/libs/light/libxl_types.idl | 1 +
3 files changed, 14 insertions(+)

diff --git a/tools/include/libxl.h b/tools/include/libxl.h
index 1ea5b4f446e8..fe0aad632c08 100644
--- a/tools/include/libxl.h
+++ b/tools/include/libxl.h
@@ -444,6 +444,14 @@
*/
#define LIBXL_HAVE_DISK_SAFE_REMOVE 1

+/*
+ * LIBXL_HAVE_BUILDINFO_DISABLE_EVTCHN_FIFO indicates that
+ * libxl_domain_build_info has a disable_evtchn_fifo (boolean) field
+ * to determine whether the EVTCHNOPs to initialize and manipulate FIFO
+ * event channels are exposed to the guest.
+ */
+#define LIBXL_HAVE_BUILDINFO_DISABLE_EVTCHN_FIFO 1
+
/*
* libxl ABI compatibility
*
diff --git a/tools/libs/light/libxl_create.c b/tools/libs/light/libxl_create.c
index 321a13e519b5..abbbd91442c0 100644
--- a/tools/libs/light/libxl_create.c
+++ b/tools/libs/light/libxl_create.c
@@ -263,6 +263,8 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
if (!b_info->event_channels)
b_info->event_channels = 1023;

+ libxl_defbool_setdefault(&b_info->disable_evtchn_fifo, false);
+
libxl__arch_domain_build_info_setdefault(gc, b_info);
libxl_defbool_setdefault(&b_info->dm_restrict, false);

@@ -609,6 +611,9 @@ int libxl__domain_make(libxl__gc *gc, libxl_domain_config *d_config,
.max_maptrack_frames = b_info->max_maptrack_frames,
};

+ if (libxl_defbool_val(b_info->disable_evtchn_fifo))
+ create.flags |= XEN_DOMCTL_CDF_disable_fifo;
+
if (info->type != LIBXL_DOMAIN_TYPE_PV) {
create.flags |= XEN_DOMCTL_CDF_hvm;

diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl
index 9d3f05f39978..fa3f6ec3425e 100644
--- a/tools/libs/light/libxl_types.idl
+++ b/tools/libs/light/libxl_types.idl
@@ -541,6 +541,7 @@ libxl_domain_build_info = Struct("domain_build_info",[
("iomem", Array(libxl_iomem_range, "num_iomem")),
("claim_mode", libxl_defbool),
("event_channels", uint32),
+ ("disable_evtchn_fifo",libxl_defbool),
("kernel", string),
("cmdline", string),
("ramdisk", string),
--
2.20.1