This option will enable Dynamic DMA windows (DDW) support for pseries
machine.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
hw/ppc/spapr.c | 15 +++++++++++++++
vl.c | 4 ++++
2 files changed, 19 insertions(+)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index d01978f..fec295b 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -100,6 +100,7 @@ struct sPAPRMachineState {
/*< public >*/
char *kvm_type;
+ bool ddw_supported;
};
sPAPREnvironment *spapr;
@@ -1570,10 +1571,24 @@ static void spapr_set_kvm_type(Object *obj, const char
*value, Error **errp)
sm->kvm_type = g_strdup(value);
}
+static bool spapr_machine_get_ddw(Object *obj, Error **errp)
+{
+ sPAPRMachineState *sms = SPAPR_MACHINE(obj);
+ return sms->ddw_supported;
+}
+
+static void spapr_machine_set_ddw(Object *obj, bool value, Error **errp)
+{
+ sPAPRMachineState *sms = SPAPR_MACHINE(obj);
+ sms->ddw_supported = value;
+}
+
static void spapr_machine_initfn(Object *obj)
{
object_property_add_str(obj, "kvm-type",
spapr_get_kvm_type, spapr_set_kvm_type, NULL);
+ object_property_add_bool(obj, "ddw", spapr_machine_get_ddw,
+ spapr_machine_set_ddw, NULL);
}
static void spapr_machine_class_init(ObjectClass *oc, void *data)
diff --git a/vl.c b/vl.c
index 6e084c2..a615fb1 100644
--- a/vl.c
+++ b/vl.c
@@ -383,6 +383,10 @@ static QemuOptsList qemu_machine_opts = {
.name = "kvm-type",
.type = QEMU_OPT_STRING,
.help = "Specifies the KVM virtualization mode (HV, PR)",
+ }, {
+ .name = "ddw",
+ .type = QEMU_OPT_BOOL,
+ .help = "Enable Dynamic DMA windows support (pseries only)",
},{
.name = PC_MACHINE_MAX_RAM_BELOW_4G,
.type = QEMU_OPT_SIZE,
--
2.0.0
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