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bh=OgD0H0WDIKDVJ5YzHTe0l8wioVl0CiZcYd7oSM9KHO8=; b=UdX32UEiUBeXuCd17Pn8YYcgiHlSesxzxCmwBkr0/5Eriz9t12aqDiDdiJabQrQaFOn451 lrDi0RyQW714+9qgULYOuisrhg1kWgbkPBW7aO1ts9eqChCVSiaqog+WxS3sBNLbE+QVIb BtxN0i9sA9OQqt82B/oDMvjVr2LMDx4= X-MC-Unique: _AOmIdHTMU6iSyWwYclgbg-1 From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v8 14/15] qmp: Include "reserve" property of memory backends Date: Mon, 10 May 2021 13:43:27 +0200 Message-Id: <20210510114328.21835-15-david@redhat.com> In-Reply-To: <20210510114328.21835-1-david@redhat.com> References: <20210510114328.21835-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.698, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , David Hildenbrand , Markus Armbruster , Igor Mammedov , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Let's include the new property. Instead of relying on CONFIG_LINUX, let's try to unconditionally grab the property and treat errors as "does not exist". Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Eduardo Habkost Reviewed-by: Markus Armbruster Acked-by: Eduardo Habkost for memory backend and mach= ine core Cc: Eric Blake Cc: Markus Armbruster Cc: Igor Mammedov Signed-off-by: David Hildenbrand --- hw/core/machine-qmp-cmds.c | 7 +++++++ qapi/machine.json | 7 +++++++ 2 files changed, 14 insertions(+) diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c index a36ceaf4f3..216fdfaf3a 100644 --- a/hw/core/machine-qmp-cmds.c +++ b/hw/core/machine-qmp-cmds.c @@ -157,6 +157,7 @@ void qmp_set_numa_node(NumaOptions *cmd, Error **errp) =20 static int query_memdev(Object *obj, void *opaque) { + Error *err =3D NULL; MemdevList **list =3D opaque; Memdev *m; QObject *host_nodes; @@ -173,6 +174,12 @@ static int query_memdev(Object *obj, void *opaque) m->dump =3D object_property_get_bool(obj, "dump", &error_abort); m->prealloc =3D object_property_get_bool(obj, "prealloc", &error_a= bort); m->share =3D object_property_get_bool(obj, "share", &error_abort); + m->reserve =3D object_property_get_bool(obj, "reserve", &err); + if (err) { + error_free_or_abort(&err); + } else { + m->has_reserve =3D true; + } m->policy =3D object_property_get_enum(obj, "policy", "HostMemPoli= cy", &error_abort); host_nodes =3D object_property_get_qobject(obj, diff --git a/qapi/machine.json b/qapi/machine.json index 32650bfe9e..1cfb16e6eb 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -798,6 +798,12 @@ # # @share: whether memory is private to QEMU or shared (since 6.1) # +# @reserve: whether swap space (or huge pages) was reserved if applicable. +# This corresponds to the user configuration and not the actual +# behavior implemented in the OS to perform the reservation. +# For example, Linux will never reserve swap space for shared +# file mappings. (since 6.1) +# # @host-nodes: host nodes for its memory policy # # @policy: memory policy of memory backend @@ -812,6 +818,7 @@ 'dump': 'bool', 'prealloc': 'bool', 'share': 'bool', + '*reserve': 'bool', 'host-nodes': ['uint16'], 'policy': 'HostMemPolicy' }} =20 --=20 2.30.2