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i386/xen: add pc_machine_kvm_type to initialize XEN_EMULATE mode

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The xen_overlay device (and later similar devices for event channels and
grant tables) need to be instantiated. Do this from a kvm_type method on
the PC machine derivatives, since KVM is only way to support Xen emulation
for now.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This commit is contained in:
David Woodhouse 2022-12-12 23:40:45 +00:00
parent 7058fa0220
commit e21be724ea
2 changed files with 14 additions and 0 deletions
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11
hw/i386/pc.c
View File

@ -90,6 +90,7 @@
#include "hw/virtio/virtio-iommu.h"
#include "hw/virtio/virtio-pmem-pci.h"
#include "hw/virtio/virtio-mem-pci.h"
#include "hw/i386/kvm/xen_overlay.h"
#include "hw/mem/memory-device.h"
#include "sysemu/replay.h"
#include "target/i386/cpu.h"
@ -1846,6 +1847,16 @@ static void pc_machine_initfn(Object *obj)
cxl_machine_init(obj, &pcms->cxl_devices_state);
}
int pc_machine_kvm_type(MachineState *machine, const char *kvm_type)
{
#ifdef CONFIG_XEN_EMU
if (xen_mode == XEN_EMULATE) {
xen_overlay_create();
}
#endif
return 0;
}
static void pc_machine_reset(MachineState *machine, ShutdownCause reason)
{
CPUState *cs;

3
include/hw/i386/pc.h
View File

@ -291,12 +291,15 @@ extern const size_t pc_compat_1_5_len;
extern GlobalProperty pc_compat_1_4[];
extern const size_t pc_compat_1_4_len;
int pc_machine_kvm_type(MachineState *machine, const char *vm_type);
#define DEFINE_PC_MACHINE(suffix, namestr, initfn, optsfn) \
static void pc_machine_##suffix##_class_init(ObjectClass *oc, void *data) \
{ \
MachineClass *mc = MACHINE_CLASS(oc); \
optsfn(mc); \
mc->init = initfn; \
mc->kvm_type = pc_machine_kvm_type; \
} \
static const TypeInfo pc_machine_type_##suffix = { \
.name = namestr TYPE_MACHINE_SUFFIX, \