[v1] refactor main RAM allocation to use hostmem backend

[PATCH 35/86] arm:virt: use memdev for RAM

Igor Mammedov posted 86 patches 5 years, 11 months ago

Diff against v2 v3 v3 v4 v5 v6
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Maintainers: Andrew Baumann <Andrew.Baumann@microsoft.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Laurent Vivier <lvivier@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Andrew Jeffery <andrew@aj.id.au>, Sergio Lopez <slp@redhat.com>, Halil Pasic <pasic@linux.ibm.com>, Aurelien Jarno <aurelien@aurel32.net>, Christian Borntraeger <borntraeger@de.ibm.com>, Paul Burton <pburton@wavecomp.com>, Artyom Tarasenko <atar4qemu@gmail.com>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Igor Mammedov <imammedo@redhat.com>, Andrzej Zaborowski <balrogg@gmail.com>, Thomas Huth <thuth@redhat.com>, Aleksandar Markovic <amarkovic@wavecomp.com>, KONRAD Frederic <frederic.konrad@adacore.com>, David Hildenbrand <david@redhat.com>, Michael Walle <michael@walle.cc>, "Philippe Mathieu-Daudé" <philmd@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, Eduardo Habkost <ehabkost@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Andrey Smirnov <andrew.smirnov@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Rob Herring <robh@kernel.org>, Jan Kiszka <jan.kiszka@web.de>, Beniamino Galvani <b.galvani@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, Fabien Chouteau <chouteau@adacore.com>, Leif Lindholm <leif.lindholm@linaro.org>, Thomas Huth <huth@tuxfamily.org>, Peter Chubb <peter.chubb@nicta.com.au>, Radoslaw Biernacki <radoslaw.biernacki@linaro.org>, Cornelia Huck <cohuck@redhat.com>, "Hervé Poussineau" <hpoussin@reactos.org>, Antony Pavlov <antonynpavlov@gmail.com>, Jean-Christophe Dubois <jcd@tribudubois.net>, Helge Deller <deller@gmx.de>, Alistair Francis <alistair@alistair23.me>, Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>, Joel Stanley <joel@jms.id.au>, BALATON Zoltan <balaton@eik.bme.hu>, Richard Henderson <rth@twiddle.net>

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[PATCH 35/86] arm:virt: use memdev for RAM

Posted by Igor Mammedov 5 years, 11 months ago

memory_region_allocate_system_memory() API is going away,
so replace it with memdev allocated MemoryRegion.
The later is initialized by generic code, so board only
needs to opt in to memdev scheme by providing
  MachineClass::default_ram_id
and then map memory region provided by
  MachineState::ram_memdev

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/arm/virt.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 39ab5f4..e2fbca3 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1512,7 +1512,6 @@ static void machvirt_init(MachineState *machine)
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *secure_sysmem = NULL;
     int n, virt_max_cpus;
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     bool firmware_loaded;
     bool aarch64 = true;
     bool has_ged = !vmc->no_ged;
@@ -1701,9 +1700,8 @@ static void machvirt_init(MachineState *machine)
         }
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base, ram);
+    memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base,
+                                machine->ram);
     if (machine->device_memory) {
         memory_region_add_subregion(sysmem, machine->device_memory->base,
                                     &machine->device_memory->mr);
@@ -2053,6 +2051,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     hc->unplug_request = virt_machine_device_unplug_request_cb;
     mc->numa_mem_supported = true;
     mc->auto_enable_numa_with_memhp = true;
+    mc->default_ram_id = "mach-virt.ram";
 }
 
 static void virt_instance_init(Object *obj)
-- 
2.7.4