Re: [libvirt] [Qemu-devel] [PATCH] deprecate -mem-path fallback to anonymous RAM

Igor Mammedov <imammedo(a)redhat.com&gt; writes: > Fallback might affect guest or worse whole host performance > or functionality if backing file were used to share guest RAM > with another process. > > Patch deprecates fallback so that we could remove it in future > and ensure that QEMU will provide expected behavior and fail if > it can't use user provided backing file. > > Signed-off-by: Igor Mammedov <imammedo(a)redhat.com&gt; > --- > PS: > Patch is written on top of > [PATCH v4 0/3] numa: deprecate '-numa node, mem' and default memory distribution > to avoid conflicts in qemu-deprecated.texi > > numa.c | 4 ++-- > qemu-deprecated.texi | 8 ++++++++ > 2 files changed, 10 insertions(+), 2 deletions(-) > > diff --git a/numa.c b/numa.c > index 91a29138a2..53d67b8ad9 100644 > --- a/numa.c > +++ b/numa.c > @@ -494,8 +494,8 @@ static void allocate_system_memory_nonnuma(MemoryRegion *mr, Object *owner, > if (mem_prealloc) { > exit(1); > } > - error_report("falling back to regular RAM allocation."); > - > + warn_report("falling back to regular RAM allocation. " > + "Fallback to RAM allocation is deprecated."); Can we give the user clues on how to avoid the deprecated fallback?