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xen: convert "-machine igd-passthru" to an accelerator property

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The first machine property to fall is Xen's Intel integrated graphics
passthrough.  The "-machine igd-passthru" option does not set anymore
a property on the machine object, but desugars to a GlobalProperty on
accelerator objects.

The setter is very simple, since the value ends up in a
global variable, so this patch also provides an example before the more
complicated cases that follow it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2019-11-13 10:56:53 +01:00
parent fe17413247
commit 46472d8232
6 changed files with 28 additions and 34 deletions
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18
hw/xen/xen-common.c
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@ -11,7 +11,9 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qapi/error.h"
#include "hw/xen/xen-legacy-backend.h"
#include "hw/xen/xen_pt.h"
#include "chardev/char.h"
#include "sysemu/accel.h"
#include "sysemu/runstate.h"
@ -124,6 +126,16 @@ static void xen_change_state_handler(void *opaque, int running,
}
}
static bool xen_get_igd_gfx_passthru(Object *obj, Error **errp)
{
return has_igd_gfx_passthru;
}
static void xen_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
{
has_igd_gfx_passthru = value;
}
static void xen_setup_post(MachineState *ms, AccelState *accel)
{
int rc;
@ -177,6 +189,12 @@ static void xen_accel_class_init(ObjectClass *oc, void *data)
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,
&error_abort);
object_class_property_set_description(oc, "igd-passthru",
"Set on/off to enable/disable igd passthrou", &error_abort);
}
#define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen")