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-rw-r--r--hw/i386/pc.c1
-rw-r--r--hw/i386/pc_q35.c3
-rw-r--r--include/hw/boards.h2
-rw-r--r--vl.c8
4 files changed, 13 insertions, 1 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 82a7daa188..d045e8b454 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1524,6 +1524,7 @@ static void pc_generic_machine_class_init(ObjectClass *oc, void *data)
mc->hot_add_cpu = qm->hot_add_cpu;
mc->kvm_type = qm->kvm_type;
mc->block_default_type = qm->block_default_type;
+ mc->units_per_default_bus = qm->units_per_default_bus;
mc->max_cpus = qm->max_cpus;
mc->no_serial = qm->no_serial;
mc->no_parallel = qm->no_parallel;
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index d4a907c71b..b28ddbb742 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -344,7 +344,8 @@ static void pc_q35_init_1_4(MachineState *machine)
#define PC_Q35_MACHINE_OPTIONS \
PC_DEFAULT_MACHINE_OPTIONS, \
.desc = "Standard PC (Q35 + ICH9, 2009)", \
- .hot_add_cpu = pc_hot_add_cpu
+ .hot_add_cpu = pc_hot_add_cpu, \
+ .units_per_default_bus = 1
#define PC_Q35_2_2_MACHINE_OPTIONS \
PC_Q35_MACHINE_OPTIONS, \
diff --git a/include/hw/boards.h b/include/hw/boards.h
index dfb6718dc1..663f16acdd 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -28,6 +28,7 @@ struct QEMUMachine {
QEMUMachineHotAddCPUFunc *hot_add_cpu;
QEMUMachineGetKvmtypeFunc *kvm_type;
BlockInterfaceType block_default_type;
+ int units_per_default_bus;
int max_cpus;
unsigned int no_serial:1,
no_parallel:1,
@@ -86,6 +87,7 @@ struct MachineClass {
int (*kvm_type)(const char *arg);
BlockInterfaceType block_default_type;
+ int units_per_default_bus;
int max_cpus;
unsigned int no_serial:1,
no_parallel:1,
diff --git a/vl.c b/vl.c
index 4bc8f97c25..debcbcceea 100644
--- a/vl.c
+++ b/vl.c
@@ -1585,6 +1585,7 @@ static void machine_class_init(ObjectClass *oc, void *data)
mc->hot_add_cpu = qm->hot_add_cpu;
mc->kvm_type = qm->kvm_type;
mc->block_default_type = qm->block_default_type;
+ mc->units_per_default_bus = qm->units_per_default_bus;
mc->max_cpus = qm->max_cpus;
mc->no_serial = qm->no_serial;
mc->no_parallel = qm->no_parallel;
@@ -4375,6 +4376,13 @@ int main(int argc, char **argv, char **envp)
blk_mig_init();
ram_mig_init();
+ /* If the currently selected machine wishes to override the units-per-bus
+ * property of its default HBA interface type, do so now. */
+ if (machine_class->units_per_default_bus) {
+ override_max_devs(machine_class->block_default_type,
+ machine_class->units_per_default_bus);
+ }
+
/* open the virtual block devices */
if (snapshot)
qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot, NULL, 0);