Import QEMU upstream snapshot d2e570c

Upstream: https://gitlab.com/qemu-project/qemu.git

Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475

accel/xen/meson.build

@@ -0,0 +1 @@
+system_ss.add(when: 'CONFIG_XEN', if_true: files('xen-all.c'))

accel/xen/xen-all.c

@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2014       Citrix Systems UK Ltd.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "qemu/module.h"
+#include "qapi/error.h"
+#include "hw/xen/xen_native.h"
+#include "hw/xen/xen-legacy-backend.h"
+#include "hw/xen/xen_pt.h"
+#include "hw/xen/xen_igd.h"
+#include "chardev/char.h"
+#include "qemu/accel.h"
+#include "accel/dummy-cpus.h"
+#include "accel/accel-ops.h"
+#include "accel/accel-cpu-ops.h"
+#include "system/cpus.h"
+#include "system/xen.h"
+#include "system/runstate.h"
+#include "migration/misc.h"
+#include "migration/global_state.h"
+#include "hw/core/boards.h"
+
+bool xen_allowed;
+
+xc_interface *xen_xc;
+xenforeignmemory_handle *xen_fmem;
+xendevicemodel_handle *xen_dmod;
+
+static void xenstore_record_dm_state(const char *state)
+{
+    char path[50];
+
+    snprintf(path, sizeof (path), "device-model/%u/state", xen_domid);
+    if (!qemu_xen_xs_write(xenstore, XBT_NULL, path, state, strlen(state))) {
+        error_report("error recording dm state");
+        exit(1);
+    }
+}
+
+
+static void xen_change_state_handler(void *opaque, bool running,
+                                     RunState state)
+{
+    if (running) {
+        /* record state running */
+        xenstore_record_dm_state("running");
+    }
+}
+
+static bool xen_get_igd_gfx_passthru(Object *obj, Error **errp)
+{
+    return xen_igd_gfx_pt_enabled();
+}
+
+static void xen_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
+{
+    xen_igd_gfx_pt_set(value, errp);
+}
+
+static void xen_setup_post(AccelState *as)
+{
+    int rc;
+
+    if (xen_domid_restrict) {
+        rc = xen_restrict(xen_domid);
+        if (rc < 0) {
+            perror("xen: failed to restrict");
+            exit(1);
+        }
+    }
+}
+
+static int xen_init(AccelState *as, MachineState *ms)
+{
+    MachineClass *mc = MACHINE_GET_CLASS(ms);
+
+    xen_xc = xc_interface_open(0, 0, 0);
+    if (xen_xc == NULL) {
+        xen_pv_printf(NULL, 0, "can't open xen interface\n");
+        return -1;
+    }
+    xen_fmem = xenforeignmemory_open(0, 0);
+    if (xen_fmem == NULL) {
+        xen_pv_printf(NULL, 0, "can't open xen fmem interface\n");
+        xc_interface_close(xen_xc);
+        return -1;
+    }
+    xen_dmod = xendevicemodel_open(0, 0);
+    if (xen_dmod == NULL) {
+        xen_pv_printf(NULL, 0, "can't open xen devicemodel interface\n");
+        xenforeignmemory_close(xen_fmem);
+        xc_interface_close(xen_xc);
+        return -1;
+    }
+
+    /*
+     * The XenStore write would fail when running restricted so don't attempt
+     * it in that case. Toolstacks should instead use QMP to listen for state
+     * changes.
+     */
+    if (!xen_domid_restrict) {
+        qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
+    }
+    /*
+     * opt out of system RAM being allocated by generic code
+     */
+    mc->default_ram_id = NULL;
+
+    xen_mode = XEN_ATTACH;
+    return 0;
+}
+
+static void xen_accel_class_init(ObjectClass *oc, const void *data)
+{
+    AccelClass *ac = ACCEL_CLASS(oc);
+    static GlobalProperty compat[] = {
+        { "migration", "store-global-state", "off" },
+        { "migration", "send-configuration", "off" },
+        { "migration", "send-section-footer", "off" },
+    };
+
+    ac->name = "Xen";
+    ac->init_machine = xen_init;
+    ac->setup_post = xen_setup_post;
+    ac->allowed = &xen_allowed;
+    ac->compat_props = g_ptr_array_new();
+
+    compat_props_add(ac->compat_props, compat, G_N_ELEMENTS(compat));
+
+    object_class_property_add_bool(oc, "igd-passthru",
+        xen_get_igd_gfx_passthru, xen_set_igd_gfx_passthru);
+    object_class_property_set_description(oc, "igd-passthru",
+        "Set on/off to enable/disable igd passthrou");
+}
+
+#define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen")
+
+static const TypeInfo xen_accel_type = {
+    .name = TYPE_XEN_ACCEL,
+    .parent = TYPE_ACCEL,
+    .class_init = xen_accel_class_init,
+};
+
+static void xen_accel_ops_class_init(ObjectClass *oc, const void *data)
+{
+    AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
+
+    ops->create_vcpu_thread = dummy_start_vcpu_thread;
+    ops->handle_interrupt = generic_handle_interrupt;
+}
+
+static const TypeInfo xen_accel_ops_type = {
+    .name = ACCEL_OPS_NAME("xen"),
+
+    .parent = TYPE_ACCEL_OPS,
+    .class_init = xen_accel_ops_class_init,
+    .abstract = true,
+};
+
+static void xen_type_init(void)
+{
+    type_register_static(&xen_accel_type);
+    type_register_static(&xen_accel_ops_type);
+}
+type_init(xen_type_init);