[Qemu-devel] [PATCH 5/8] machine: query kvm-shadow-mem machine property rather than qemu opts

[Marcel Apfelbaum <marcel@redhat.com>]

Fixes a QEMU crash when passing kvm_shadow_mem parameter in command line.

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
---
 hw/core/machine.c   | 6 ++++++
 include/hw/boards.h | 1 +
 target-i386/kvm.c   | 3 +--
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/hw/core/machine.c b/hw/core/machine.c
index e04e5ab..0ad5b12 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -284,6 +284,7 @@ static void machine_initfn(Object *obj)
     MachineState *ms = MACHINE(obj);
 
     ms->kernel_irqchip_allowed = true;
+    ms->kvm_shadow_mem = -1;
 
     object_property_add_str(obj, "accel",
                             machine_get_accel, machine_set_accel, NULL);
@@ -414,6 +415,11 @@ bool machine_kernel_irqchip_required(MachineState *machine)
     return machine->kernel_irqchip_required;
 }
 
+int machine_kvm_shadow_mem(MachineState *machine)
+{
+    return machine->kvm_shadow_mem;
+}
+
 static const TypeInfo machine_info = {
     .name = TYPE_MACHINE,
     .parent = TYPE_OBJECT,
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 69ab606..4be3cd1 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -69,6 +69,7 @@ bool machine_usb(MachineState *machine);
 bool machine_iommu(MachineState *machine);
 bool machine_kernel_irqchip_allowed(MachineState *machine);
 bool machine_kernel_irqchip_required(MachineState *machine);
+int machine_kvm_shadow_mem(MachineState *machine);
 
 /**
  * MachineClass:
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index ce554e4..acb6831 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -890,8 +890,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     }
     qemu_register_reset(kvm_unpoison_all, NULL);
 
-    shadow_mem = qemu_opt_get_size(qemu_get_machine_opts(),
-                                   "kvm_shadow_mem", -1);
+    shadow_mem = machine_kvm_shadow_mem(ms);
     if (shadow_mem != -1) {
         shadow_mem /= 4096;
         ret = kvm_vm_ioctl(s, KVM_SET_NR_MMU_PAGES, shadow_mem);
-- 
2.1.0