[Qemu-devel] [PATCH v1 1/5] sparc64: use memory_region_allocate_system_memory() only for '-m' specified RAM

[Igor Mammedov <imammedo@redhat.com>]

memory_region_allocate_system_memory() was designed to be called for
allocating inital RAM. Using it mutiple times within one board is not
supported and could fail if -mem-path with non hugepage path is used.

Keep using memory_region_allocate_system_memory() only for initial
RAM and use memory_region_init_ram() for the rest fixed size regions.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/sparc64/niagara.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/hw/sparc64/niagara.c b/hw/sparc64/niagara.c
index f8a856f..39a4522 100644
--- a/hw/sparc64/niagara.c
+++ b/hw/sparc64/niagara.c
@@ -37,6 +37,7 @@
 #include "sysemu/block-backend.h"
 #include "qemu/error-report.h"
 #include "sysemu/qtest.h"
+#include "qapi/error.h"
 
 
 typedef struct NiagaraBoardState {
@@ -108,8 +109,8 @@ static void niagara_init(MachineState *machine)
     /* init CPUs */
     sparc64_cpu_devinit(machine->cpu_type, NIAGARA_PROM_BASE);
     /* set up devices */
-    memory_region_allocate_system_memory(&s->hv_ram, NULL, "sun4v-hv.ram",
-                                         NIAGARA_HV_RAM_SIZE);
+    memory_region_init_ram(&s->hv_ram, NULL, "sun4v-hv.ram",
+                           NIAGARA_HV_RAM_SIZE, &error_fatal);
     memory_region_add_subregion(sysmem, NIAGARA_HV_RAM_BASE, &s->hv_ram);
 
     memory_region_allocate_system_memory(&s->partition_ram, NULL,
@@ -118,17 +119,17 @@ static void niagara_init(MachineState *machine)
     memory_region_add_subregion(sysmem, NIAGARA_PARTITION_RAM_BASE,
                                 &s->partition_ram);
 
-    memory_region_allocate_system_memory(&s->nvram, NULL,
-                                         "sun4v.nvram", NIAGARA_NVRAM_SIZE);
+    memory_region_init_ram(&s->nvram, NULL, "sun4v.nvram", NIAGARA_NVRAM_SIZE,
+                           &error_fatal);
     memory_region_add_subregion(sysmem, NIAGARA_NVRAM_BASE, &s->nvram);
-    memory_region_allocate_system_memory(&s->md_rom, NULL,
-                                         "sun4v-md.rom", NIAGARA_MD_ROM_SIZE);
+    memory_region_init_ram(&s->md_rom, NULL, "sun4v-md.rom",
+                           NIAGARA_MD_ROM_SIZE, &error_fatal);
     memory_region_add_subregion(sysmem, NIAGARA_MD_ROM_BASE, &s->md_rom);
-    memory_region_allocate_system_memory(&s->hv_rom, NULL,
-                                         "sun4v-hv.rom", NIAGARA_HV_ROM_SIZE);
+    memory_region_init_ram(&s->hv_rom, NULL, "sun4v-hv.rom",
+                           NIAGARA_HV_ROM_SIZE, &error_fatal);
     memory_region_add_subregion(sysmem, NIAGARA_HV_ROM_BASE, &s->hv_rom);
-    memory_region_allocate_system_memory(&s->prom, NULL,
-                                         "sun4v.prom", PROM_SIZE_MAX);
+    memory_region_init_ram(&s->prom, NULL, "sun4v.prom", PROM_SIZE_MAX,
+                           &error_fatal);
     memory_region_add_subregion(sysmem, NIAGARA_PROM_BASE, &s->prom);
 
     add_rom_or_fail("nvram1", NIAGARA_NVRAM_BASE);
@@ -145,8 +146,8 @@ static void niagara_init(MachineState *machine)
         BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
         int size = blk_getlength(blk);
         if (size > 0) {
-            memory_region_allocate_system_memory(&s->vdisk_ram, NULL,
-                                                 "sun4v_vdisk.ram", size);
+            memory_region_init_ram(&s->vdisk_ram, NULL, "sun4v_vdisk.ram", size,
+                                   &error_fatal);
             memory_region_add_subregion(get_system_memory(),
                                         NIAGARA_VDISK_BASE, &s->vdisk_ram);
             dinfo->is_default = 1;
-- 
2.7.4