When building a commandline for a DIMM memory device with non-default access mode, the qemuBuildMemoryBackendProps() will tell QEMU to allocate memory from per-domain memory backing dir. But later, when preparing the host, the qemuProcessNeedMemoryBackingPath() does not check for memory devices at all resulting in per-domain memory backing dir not being created which upsets QEMU. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1961114 Signed-off-by: Kristina Hanicova <khanicov(a)redhat.com&gt; --- src/qemu/qemu_process.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index b69a9d1927..35213f81ec 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3938,6 +3938,11 @@ qemuProcessNeedMemoryBackingPath(virDomainDef *def, return true; } + for (i = 0; i < def->nmems; i++) { + if (def->mems[i]->access != VIR_DOMAIN_MEMORY_ACCESS_DEFAULT) + return true; + } + if (mem) { switch (mem->model) { case VIR_DOMAIN_MEMORY_MODEL_DIMM: -- 2.31.1