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memory-device: Introduce machine_memory_devices_init() 

Let's intrduce a new helper that we will use to replace existing memory
device setup code during machine initialization. We'll enforce that the
size has to be > 0.

Once all machines were converted, we'll only allocate ms->device_memory
if the size > 0.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230623124553.400585-3-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
master
David Hildenbrand 2023-06-23 14:45:45 +02:00
parent 99d88de6eb
commit cc0afd8a72
2 changed files with 15 additions and 0 deletions
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14
hw/mem/memory-device.c
View File

@ -17,6 +17,7 @@
#include "qemu/range.h"
#include "hw/virtio/vhost.h"
#include "sysemu/kvm.h"
#include "exec/address-spaces.h"
#include "trace.h"
static gint memory_device_addr_sort(gconstpointer a, gconstpointer b)
@ -328,6 +329,19 @@ uint64_t memory_device_get_region_size(const MemoryDeviceState *md,
return memory_region_size(mr);
}
void machine_memory_devices_init(MachineState *ms, hwaddr base, uint64_t size)
{
g_assert(size);
g_assert(!ms->device_memory);
ms->device_memory = g_new0(DeviceMemoryState, 1);
ms->device_memory->base = base;
memory_region_init(&ms->device_memory->mr, OBJECT(ms), "device-memory",
size);
memory_region_add_subregion(get_system_memory(), ms->device_memory->base,
&ms->device_memory->mr);
}
static const TypeInfo memory_device_info = {
.name = TYPE_MEMORY_DEVICE,
.parent = TYPE_INTERFACE,

1
include/hw/boards.h
View File

@ -37,6 +37,7 @@ void machine_parse_smp_config(MachineState *ms,
const SMPConfiguration *config, Error **errp);
unsigned int machine_topo_get_cores_per_socket(const MachineState *ms);
unsigned int machine_topo_get_threads_per_socket(const MachineState *ms);
void machine_memory_devices_init(MachineState *ms, hwaddr base, uint64_t size);
/**
* machine_class_allow_dynamic_sysbus_dev: Add type to list of valid devices