Introduce a TYPE_MEMORY_DEVICE subclass `sp-mem` for boot-time
SOFT_RESERVED memory exposed to the guest with a per-device NUMA
proximity domain.
The device targets accelerator memory (HBM and similar) that the
firmware hands to the guest OS as SOFT_RESERVED memory, so a driver
in the guest -- rather than the kernel's general allocator -- owns
the range.
Usage:
-object memory-backend-ram,id=spm0,size=$SIZE
-numa node,nodeid=$N
-device sp-mem,id=dev0,memdev=spm0,node=$N[,addr=$GPA]
The device is boot-time only (no hotplug).
Signed-off-by: FangSheng Huang <FangSheng.Huang@amd.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260623075051.3797975-2-FangSheng.Huang@amd.com>
e83b010836