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-rw-r--r--accel/kvm/kvm-all.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 7b9f92d51c..4770dd8c67 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -41,6 +41,7 @@
#include "hw/irq.h"
#include "sysemu/sev.h"
#include "sysemu/balloon.h"
+#include "qapi/visitor.h"
#include "hw/boards.h"
@@ -92,6 +93,7 @@ struct KVMState
int max_nested_state_len;
int many_ioeventfds;
int intx_set_mask;
+ int kvm_shadow_mem;
bool sync_mmu;
bool manual_dirty_log_protect;
/* The man page (and posix) say ioctl numbers are signed int, but
@@ -2954,6 +2956,40 @@ static bool kvm_accel_has_memory(MachineState *ms, AddressSpace *as,
return false;
}
+static void kvm_get_kvm_shadow_mem(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+{
+ KVMState *s = KVM_STATE(obj);
+ int64_t value = s->kvm_shadow_mem;
+
+ visit_type_int(v, name, &value, errp);
+}
+
+static void kvm_set_kvm_shadow_mem(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+{
+ KVMState *s = KVM_STATE(obj);
+ Error *error = NULL;
+ int64_t value;
+
+ visit_type_int(v, name, &value, &error);
+ if (error) {
+ error_propagate(errp, error);
+ return;
+ }
+
+ s->kvm_shadow_mem = value;
+}
+
+static void kvm_accel_instance_init(Object *obj)
+{
+ KVMState *s = KVM_STATE(obj);
+
+ s->kvm_shadow_mem = -1;
+}
+
static void kvm_accel_class_init(ObjectClass *oc, void *data)
{
AccelClass *ac = ACCEL_CLASS(oc);
@@ -2961,11 +2997,18 @@ static void kvm_accel_class_init(ObjectClass *oc, void *data)
ac->init_machine = kvm_init;
ac->has_memory = kvm_accel_has_memory;
ac->allowed = &kvm_allowed;
+
+ object_class_property_add(oc, "kvm-shadow-mem", "int",
+ kvm_get_kvm_shadow_mem, kvm_set_kvm_shadow_mem,
+ NULL, NULL, &error_abort);
+ object_class_property_set_description(oc, "kvm-shadow-mem",
+ "KVM shadow MMU size", &error_abort);
}
static const TypeInfo kvm_accel_type = {
.name = TYPE_KVM_ACCEL,
.parent = TYPE_ACCEL,
+ .instance_init = kvm_accel_instance_init,
.class_init = kvm_accel_class_init,
.instance_size = sizeof(KVMState),
};