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xen: introduce new 'XenBus' and 'XenDevice' object hierarchy

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This patch adds the basic boilerplate for a 'XenBus' object that will act
as a parent to 'XenDevice' PV backends.
A new 'XenBridge' object is also added to connect XenBus to the system bus.

The XenBus object is instantiated by a new xen_bus_init() function called
from the same sites as the legacy xen_be_init() function.

Subsequent patches will flesh-out the functionality of these objects.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony Perard <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
This commit is contained in:
Paul Durrant 2019-01-08 14:48:47 +00:00 • committed by Anthony PERARD
parent 2d0ed5e642
commit 108f7bba15
6 changed files with 195 additions and 1 deletions
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3
hw/i386/xen/xen-hvm.c
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@ -17,6 +17,7 @@
#include "hw/i386/apic-msidef.h"
#include "hw/xen/xen_common.h"
#include "hw/xen/xen-legacy-backend.h"
#include "hw/xen/xen-bus.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-misc.h"
#include "qemu/error-report.h"
@ -1484,6 +1485,8 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
QLIST_INIT(&state->dev_list);
device_listener_register(&state->device_listener);
xen_bus_init();
/* Initialize backend core & drivers */
if (xen_be_init() != 0) {
error_report("xen backend core setup failed");