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spapr/vio: deprecate the "irq" property

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VIO devices have an "irq" property that can be used by the sPAPR IRQ
allocator as an IRQ number hint. But it is not set in QEMU nor in
libvirt. It brings unnecessary complexity to the underlying layers
managing the IRQ number space and it is in full opposition with the
new static IRQ allocator we want to introduce in sPAPR.

Let's deprecate it to simplify the spapr_irq_alloc routine in the
future.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
[dwg: Check qtest_enabled() to suppress bogus warnings from make check]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2018-06-05 08:56:26 +02:00 committed by David Gibson
parent 6b37554458
commit efe2add7cb
2 changed files with 31 additions and 3 deletions
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22
hw/ppc/spapr_vio.c
View File

@ -22,6 +22,7 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "hw/hw.h"
#include "qemu/log.h"
#include "sysemu/sysemu.h"
@ -32,6 +33,7 @@
#include "sysemu/kvm.h"
#include "sysemu/device_tree.h"
#include "kvm_ppc.h"
#include "sysemu/qtest.h"
#include "hw/ppc/spapr.h"
#include "hw/ppc/spapr_vio.h"
@ -41,8 +43,26 @@
#include <libfdt.h>
static void spapr_vio_getset_irq(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(DEVICE(obj), prop);
if (!qtest_enabled()) {
warn_report(TYPE_VIO_SPAPR_DEVICE " '%s' property is deprecated", name);
}
visit_type_uint32(v, name, ptr, errp);
}
static const PropertyInfo spapr_vio_irq_propinfo = {
.name = "irq",
.get = spapr_vio_getset_irq,
.set = spapr_vio_getset_irq,
};
static Property spapr_vio_props[] = {
DEFINE_PROP_UINT32("irq", VIOsPAPRDevice, irq, 0), \
DEFINE_PROP("irq", VIOsPAPRDevice, irq, spapr_vio_irq_propinfo, uint32_t),
DEFINE_PROP_END_OF_LIST(),
};

12
qemu-doc.texi
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@ -2958,13 +2958,21 @@ support page sizes < 4096 any longer.
@section System emulator machines
@section Block device options
@section Device options
@subsection "backing": "" (since 2.12.0)
@subsection Block device options
@subsubsection "backing": "" (since 2.12.0)
In order to prevent QEMU from automatically opening an image's backing
chain, use ``"backing": null'' instead.
@subsection vio-spapr-device device options
@subsubsection "irq": "" (since 3.0.0)
The ``irq'' property is obsoleted.
@node Supported build platforms
@appendix Supported build platforms