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Tsirkin" , Paolo Bonzini , Peter Maydell , Richard Henderson , Song Gao , Xiaojuan Yang Subject: [PATCH 02/10] memory-device: Introduce memory_devices_init() Date: Tue, 30 May 2023 13:38:30 +0200 Message-Id: <20230530113838.257755-3-david@redhat.com> In-Reply-To: <20230530113838.257755-1-david@redhat.com> References: <20230530113838.257755-1-david@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Received-SPF: pass client-ip=170.10.133.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.167, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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. Signed-off-by: David Hildenbrand --- hw/mem/memory-device.c | 14 ++++++++++++++ include/hw/mem/memory-device.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/hw/mem/memory-device.c b/hw/mem/memory-device.c index 49f86ec8a8..2197dcf356 100644 --- a/hw/mem/memory-device.c +++ b/hw/mem/memory-device.c @@ -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 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, diff --git a/include/hw/mem/memory-device.h b/include/hw/mem/memory-device.h index 48d2611fc5..6e8a10e2f5 100644 --- a/include/hw/mem/memory-device.h +++ b/include/hw/mem/memory-device.h @@ -16,6 +16,7 @@ #include "hw/qdev-core.h" #include "qapi/qapi-types-machine.h" #include "qom/object.h" +#include "exec/hwaddr.h" #define TYPE_MEMORY_DEVICE "memory-device" @@ -113,5 +114,6 @@ void memory_device_plug(MemoryDeviceState *md, MachineState *ms); void memory_device_unplug(MemoryDeviceState *md, MachineState *ms); uint64_t memory_device_get_region_size(const MemoryDeviceState *md, Error **errp); +void memory_devices_init(MachineState *ms, hwaddr base, uint64_t size); #endif -- 2.40.1