From nobody Sun Feb 8 21:29:04 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of redhat.com designates 63.128.21.124 as permitted sender) client-ip=63.128.21.124; envelope-from=libvir-list-bounces@redhat.com; helo=us-smtp-delivery-124.mimecast.com; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of redhat.com designates 63.128.21.124 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1606999095; cv=none; d=zohomail.com; s=zohoarc; b=oBUKRmUyyeyqJq+2gWeIDpIoKAyWzTCou76QKDNApLCdRrcV+7xDYDXdXyAoChqW3bD1eG3Efah+HAROJXqOQrHp7qPlVGyexkU47Wb9UOCflFX7RetdfNzS5LGGvIx494I8D3dXx6avgIABGiv5+YIvVZnDByQO3oli+WVmhJs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1606999095; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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t=1606999094; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=oTe6Fgxg2PGSjnXQ0/t31++MDUhRIigotF9LtiHHwQo=; b=dXG78VtbFC0fsJAkKylB/ogSW8GqgzAFmnWGttoQfKCkJPB1gCkkc6nQm1mW/T0FnFsmsS jIV5w10t281Jhfs0Ssma3li+feDp1UiybV3PetwlMFRg7j06YWBjamH0CKfSl3n9xOi+LA W07hbJJSxHWmPHNJjeIo3a1Ia5TfDho= X-MC-Unique: -CU3PjbSODyqAyy6b-OJEg-1 From: Michal Privoznik To: libvir-list@redhat.com Subject: [PATCH v2 24/27] qemu: Refresh the actual size of virtio-mem on monitor reconnect Date: Thu, 3 Dec 2020 13:36:27 +0100 Message-Id: <77c283ef5de3fd01c7b93c46a83bde600884f93a.1606998426.git.mprivozn@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-loop: libvir-list@redhat.com X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=libvir-list-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" If the QEMU driver restarts it loses the track of the actual size of virtio-mem (because it's runtime type of information and thus not stored in XML) and therefore, we have to refresh it when reconnecting to the domain monitor. Signed-off-by: Michal Privoznik --- src/qemu/qemu_domain.c | 36 +++++++++++++++++++---- src/qemu/qemu_monitor.h | 3 ++ src/qemu/qemu_monitor_json.c | 55 +++++++++++++++++++++--------------- src/qemu/qemu_process.c | 3 ++ 4 files changed, 69 insertions(+), 28 deletions(-) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index fc994ec282..ea05498b78 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -7845,9 +7845,21 @@ qemuDomainUpdateMemoryDeviceInfo(virQEMUDriverPtr dr= iver, return -1; } =20 - /* if qemu doesn't support the info request, just carry on */ - if (rc =3D=3D -2) + /* If qemu doesn't support the info request, just carry on, unless we + * really need it. */ + if (rc =3D=3D -2) { + for (i =3D 0; i < vm->def->nmems; i++) { + virDomainMemoryDefPtr mem =3D vm->def->mems[i]; + + if (mem->model =3D=3D VIR_DOMAIN_MEMORY_MODEL_VIRTIO) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("qemu did not return info on vitio-mem de= vice")); + return -1; + } + } + return 0; + } =20 if (rc < 0) return -1; @@ -7862,9 +7874,23 @@ qemuDomainUpdateMemoryDeviceInfo(virQEMUDriverPtr dr= iver, if (!(dimm =3D virHashLookup(meminfo, mem->info.alias))) continue; =20 - mem->info.type =3D VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DIMM; - mem->info.addr.dimm.slot =3D dimm->slot; - mem->info.addr.dimm.base =3D dimm->address; + switch (mem->model) { + case VIR_DOMAIN_MEMORY_MODEL_VIRTIO: + mem->actualsize =3D VIR_DIV_UP(dimm->size, 1024); + break; + + case VIR_DOMAIN_MEMORY_MODEL_DIMM: + case VIR_DOMAIN_MEMORY_MODEL_NVDIMM: + mem->info.type =3D VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DIMM; + mem->info.addr.dimm.slot =3D dimm->slot; + mem->info.addr.dimm.base =3D dimm->address; + break; + + case VIR_DOMAIN_MEMORY_MODEL_NONE: + case VIR_DOMAIN_MEMORY_MODEL_LAST: + /* nada */ + break; + } } =20 virHashFree(meminfo); diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index 2f9184c122..94bef3d5d5 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -1393,10 +1393,13 @@ typedef struct _qemuMonitorMemoryDeviceInfo qemuMon= itorMemoryDeviceInfo; typedef qemuMonitorMemoryDeviceInfo *qemuMonitorMemoryDeviceInfoPtr; =20 struct _qemuMonitorMemoryDeviceInfo { + /* For pc-dimm */ unsigned long long address; unsigned int slot; bool hotplugged; bool hotpluggable; + /* For virtio-mem */ + unsigned long long size; }; =20 int qemuMonitorGetMemoryDeviceInfo(qemuMonitorPtr mon, diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 3fd925eae1..80f159618a 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -8241,7 +8241,6 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon, virJSONValuePtr cmd; virJSONValuePtr reply =3D NULL; virJSONValuePtr data =3D NULL; - qemuMonitorMemoryDeviceInfoPtr meminfo =3D NULL; size_t i; =20 if (!(cmd =3D qemuMonitorJSONMakeCommand("query-memory-devices", NULL)= )) @@ -8262,6 +8261,9 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon, =20 for (i =3D 0; i < virJSONValueArraySize(data); i++) { virJSONValuePtr elem =3D virJSONValueArrayGet(data, i); + g_autofree qemuMonitorMemoryDeviceInfoPtr meminfo =3D NULL; + virJSONValuePtr dimminfo; + const char *devalias; const char *type; =20 if (!(type =3D virJSONValueObjectGetString(elem, "type"))) { @@ -8271,26 +8273,23 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr m= on, goto cleanup; } =20 + if (!(dimminfo =3D virJSONValueObjectGetObject(elem, "data"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("query-memory-devices reply data doesn't " + "contain enum data")); + goto cleanup; + } + + if (!(devalias =3D virJSONValueObjectGetString(dimminfo, "id"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("dimm memory info data is missing 'id'")); + goto cleanup; + } + + meminfo =3D g_new0(qemuMonitorMemoryDeviceInfo, 1); + /* dimm memory devices */ if (STREQ(type, "dimm")) { - virJSONValuePtr dimminfo; - const char *devalias; - - if (!(dimminfo =3D virJSONValueObjectGetObject(elem, "data")))= { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("query-memory-devices reply data doesn't " - "contain enum data")); - goto cleanup; - } - - if (!(devalias =3D virJSONValueObjectGetString(dimminfo, "id")= )) { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("dimm memory info data is missing 'id'")); - goto cleanup; - } - - meminfo =3D g_new0(qemuMonitorMemoryDeviceInfo, 1); - if (virJSONValueObjectGetNumberUlong(dimminfo, "addr", &meminfo->address) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", @@ -8321,17 +8320,27 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr m= on, =20 } =20 - if (virHashAddEntry(info, devalias, meminfo) < 0) + } else if (STREQ(type, "virtio-mem")) { + if (virJSONValueObjectGetNumberUlong(dimminfo, "size", + &meminfo->size) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing slot in dimm memory in= fo")); goto cleanup; - - meminfo =3D NULL; + } + } else { + /* type not handled yet */ + continue; } + + if (virHashAddEntry(info, devalias, meminfo) < 0) + goto cleanup; + + meminfo =3D NULL; } =20 ret =3D 0; =20 cleanup: - VIR_FREE(meminfo); virJSONValueFree(cmd); virJSONValueFree(reply); return ret; diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 1fba9d8302..286818fa83 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -8513,6 +8513,9 @@ qemuProcessReconnect(void *opaque) =20 qemuDomainVcpuPersistOrder(obj->def); =20 + if (qemuDomainUpdateMemoryDeviceInfo(driver, obj, QEMU_ASYNC_JOB_NONE)= < 0) + goto error; + if (qemuProcessDetectIOThreadPIDs(driver, obj, QEMU_ASYNC_JOB_NONE) < = 0) goto error; =20 --=20 2.26.2