[v6] refactor main RAM allocation to use hostmem backend

[PATCH v6 67/79] ppc/spapr: use memdev for RAM

Igor Mammedov posted 79 patches 5 years, 11 months ago

Diff against v1 v2 v3 v3 v4 v5
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Maintainers: Andrew Baumann <Andrew.Baumann@microsoft.com>, David Gibson <david@gibson.dropbear.id.au>, Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>, Andrew Jeffery <andrew@aj.id.au>, Radoslaw Biernacki <radoslaw.biernacki@linaro.org>, Jan Kiszka <jan.kiszka@web.de>, Sergio Lopez <slp@redhat.com>, Aurelien Jarno <aurelien@aurel32.net>, Antony Pavlov <antonynpavlov@gmail.com>, "Michael S. Tsirkin" <mst@redhat.com>, Beniamino Galvani <b.galvani@gmail.com>, David Hildenbrand <david@redhat.com>, Leif Lindholm <leif@nuviainc.com>, Andrzej Zaborowski <balrogg@gmail.com>, Cornelia Huck <cohuck@redhat.com>, Halil Pasic <pasic@linux.ibm.com>, Eduardo Habkost <ehabkost@redhat.com>, BALATON Zoltan <balaton@eik.bme.hu>, "Hervé Poussineau" <hpoussin@reactos.org>, Jean-Christophe Dubois <jcd@tribudubois.net>, Aleksandar Markovic <amarkovic@wavecomp.com>, Igor Mammedov <imammedo@redhat.com>, Paul Burton <pburton@wavecomp.com>, Andrey Smirnov <andrew.smirnov@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Christian Borntraeger <borntraeger@de.ibm.com>, Laurent Vivier <lvivier@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Artyom Tarasenko <atar4qemu@gmail.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Richard Henderson <rth@twiddle.net>, Laurent Vivier <laurent@vivier.eu>, Alistair Francis <alistair@alistair23.me>, Michael Walle <michael@walle.cc>, Fabien Chouteau <chouteau@adacore.com>, Thomas Huth <thuth@redhat.com>, Helge Deller <deller@gmx.de>, "Philippe Mathieu-Daudé" <philmd@redhat.com>, Joel Stanley <joel@jms.id.au>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Rob Herring <robh@kernel.org>, "Cédric Le Goater" <clg@kaod.org>, Peter Chubb <peter.chubb@nicta.com.au>, Thomas Huth <huth@tuxfamily.org>, KONRAD Frederic <frederic.konrad@adacore.com>, Paolo Bonzini <pbonzini@redhat.com>

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[PATCH v6 67/79] ppc/spapr: 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 using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/ppc/spapr.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index c9b2e0a5e0..4d90f99195 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2634,7 +2634,6 @@ static void spapr_machine_init(MachineState *machine)
     PCIHostState *phb;
     int i;
     MemoryRegion *sysmem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     hwaddr node0_size = spapr_node0_size(machine);
     long load_limit, fw_size;
     char *filename;
@@ -2813,10 +2812,8 @@ static void spapr_machine_init(MachineState *machine)
         kvmppc_enable_h_page_init();
     }
 
-    /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(sysmem, 0, ram);
+    /* map RAM */
+    memory_region_add_subregion(sysmem, 0, machine->ram);
 
     /* always allocate the device memory information */
     machine->device_memory = g_malloc0(sizeof(*machine->device_memory));
@@ -4400,6 +4397,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     mc->no_parallel = 1;
     mc->default_boot_order = "";
     mc->default_ram_size = 512 * MiB;
+    mc->default_ram_id = "ppc_spapr.ram";
     mc->default_display = "std";
     mc->kvm_type = spapr_kvm_type;
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE);
-- 
2.18.1