According to comments (and experiments) qemu-xen cannot handle memory
reolcation done by hvmloader. The code was already disabled when running
qemu-xen in dom0 (see libxl__spawn_local_dm()), but it was missed when
adding qemu-xen support to stubdomain. Adjust libxl__spawn_stub_dm() to
be consistent in this regard.
Reported-by: Neowutran <x...@neowutran.ovh>
Signed-off-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com>
---
tools/libs/light/libxl_dm.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/tools/libs/light/libxl_dm.c b/tools/libs/light/libxl_dm.c
index 14b593110f7c..ed620a9d8e14 100644
--- a/tools/libs/light/libxl_dm.c
+++ b/tools/libs/light/libxl_dm.c
@@ -2432,6 +2432,16 @@ void libxl__spawn_stub_dm(libxl__egc *egc,
libxl__stub_dm_spawn_state *sdss)
"%s",
libxl_bios_type_to_string(guest_config->b_info.u.hvm.bios));
}
+ /* Disable relocating memory to make the MMIO hole larger
+ * unless we're running qemu-traditional and vNUMA is not
+ * configured. */
+ libxl__xs_printf(gc, XBT_NULL,
+ libxl__sprintf(gc, "%s/hvmloader/allow-memory-relocate",
+ libxl__xs_get_dompath(gc, guest_domid)),
+ "%d",
+ guest_config->b_info.device_model_version
+ == LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL &&
+ !libxl__vnuma_configured(&guest_config->b_info));
ret = xc_domain_set_target(ctx->xch, dm_domid, guest_domid);
if (ret<0) {
LOGED(ERROR, guest_domid, "setting target domain %d -> %d",
--
2.41.0
