From patchwork Sun Nov 5 11:47:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Maciej S. Szmigiero" X-Patchwork-Id: 13445711 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F0A02C4332F for ; Sun, 5 Nov 2023 11:50:24 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qzbch-00033v-3f; Sun, 05 Nov 2023 06:48:59 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qzbcd-00033E-10 for qemu-devel@nongnu.org; Sun, 05 Nov 2023 06:48:55 -0500 Received: from vps-vb.mhejs.net ([37.28.154.113]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qzbcb-0002JF-G1 for qemu-devel@nongnu.org; Sun, 05 Nov 2023 06:48:54 -0500 Received: from MUA by vps-vb.mhejs.net with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qzbcZ-0003YM-7E; Sun, 05 Nov 2023 12:48:51 +0100 From: "Maciej S. Szmigiero" To: qemu-devel@nongnu.org Cc: David Hildenbrand Subject: [PULL 6/9] qapi: Add query-memory-devices support to hv-balloon Date: Sun, 5 Nov 2023 12:47:54 +0100 Message-ID: <09c8d68234bfd32b2f1760400b0b6fea0085af07.1699184105.git.maciej.szmigiero@oracle.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=37.28.154.113; envelope-from=mail@maciej.szmigiero.name; helo=vps-vb.mhejs.net X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: "Maciej S. Szmigiero" Used by the driver to report its provided memory state information. Co-developed-by: David Hildenbrand Reviewed-by: David Hildenbrand Acked-by: Markus Armbruster Signed-off-by: Maciej S. Szmigiero --- hw/core/machine-hmp-cmds.c | 15 +++++++++++++++ hw/hyperv/hv-balloon.c | 27 +++++++++++++++++++++++++- qapi/machine.json | 39 ++++++++++++++++++++++++++++++++++++-- 3 files changed, 78 insertions(+), 3 deletions(-) diff --git a/hw/core/machine-hmp-cmds.c b/hw/core/machine-hmp-cmds.c index 9a4b59c6f210..a6ff6a487583 100644 --- a/hw/core/machine-hmp-cmds.c +++ b/hw/core/machine-hmp-cmds.c @@ -253,6 +253,7 @@ void hmp_info_memory_devices(Monitor *mon, const QDict *qdict) MemoryDeviceInfo *value; PCDIMMDeviceInfo *di; SgxEPCDeviceInfo *se; + HvBalloonDeviceInfo *hi; for (info = info_list; info; info = info->next) { value = info->value; @@ -310,6 +311,20 @@ void hmp_info_memory_devices(Monitor *mon, const QDict *qdict) monitor_printf(mon, " node: %" PRId64 "\n", se->node); monitor_printf(mon, " memdev: %s\n", se->memdev); break; + case MEMORY_DEVICE_INFO_KIND_HV_BALLOON: + hi = value->u.hv_balloon.data; + monitor_printf(mon, "Memory device [%s]: \"%s\"\n", + MemoryDeviceInfoKind_str(value->type), + hi->id ? hi->id : ""); + if (hi->has_memaddr) { + monitor_printf(mon, " memaddr: 0x%" PRIx64 "\n", + hi->memaddr); + } + monitor_printf(mon, " max-size: %" PRIu64 "\n", hi->max_size); + if (hi->memdev) { + monitor_printf(mon, " memdev: %s\n", hi->memdev); + } + break; default: g_assert_not_reached(); } diff --git a/hw/hyperv/hv-balloon.c b/hw/hyperv/hv-balloon.c index 4d87f99375b5..c384f23a3b5e 100644 --- a/hw/hyperv/hv-balloon.c +++ b/hw/hyperv/hv-balloon.c @@ -1622,6 +1622,31 @@ static MemoryRegion *hv_balloon_md_get_memory_region(MemoryDeviceState *md, return balloon->mr; } +static void hv_balloon_md_fill_device_info(const MemoryDeviceState *md, + MemoryDeviceInfo *info) +{ + HvBalloonDeviceInfo *hi = g_new0(HvBalloonDeviceInfo, 1); + const HvBalloon *balloon = HV_BALLOON(md); + DeviceState *dev = DEVICE(md); + + if (dev->id) { + hi->id = g_strdup(dev->id); + } + + if (balloon->hostmem) { + hi->memdev = object_get_canonical_path(OBJECT(balloon->hostmem)); + hi->memaddr = balloon->addr; + hi->has_memaddr = true; + hi->max_size = memory_region_size(balloon->mr); + /* TODO: expose current provided size or something else? */ + } else { + hi->max_size = 0; + } + + info->u.hv_balloon.data = hi; + info->type = MEMORY_DEVICE_INFO_KIND_HV_BALLOON; +} + static void hv_balloon_decide_memslots(MemoryDeviceState *md, unsigned int limit) { @@ -1709,5 +1734,5 @@ static void hv_balloon_class_init(ObjectClass *klass, void *data) mdc->get_memory_region = hv_balloon_md_get_memory_region; mdc->decide_memslots = hv_balloon_decide_memslots; mdc->get_memslots = hv_balloon_get_memslots; - /* implement fill_device_info */ + mdc->fill_device_info = hv_balloon_md_fill_device_info; } diff --git a/qapi/machine.json b/qapi/machine.json index 6c9d2f6dcffe..2985d043c00d 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -1289,6 +1289,29 @@ } } +## +# @HvBalloonDeviceInfo: +# +# hv-balloon provided memory state information +# +# @id: device's ID +# +# @memaddr: physical address in memory, where device is mapped +# +# @max-size: the maximum size of memory that the device can provide +# +# @memdev: memory backend linked with device +# +# Since: 8.2 +## +{ 'struct': 'HvBalloonDeviceInfo', + 'data': { '*id': 'str', + '*memaddr': 'size', + 'max-size': 'size', + '*memdev': 'str' + } +} + ## # @MemoryDeviceInfoKind: # @@ -1300,10 +1323,13 @@ # # @sgx-epc: since 6.2. # +# @hv-balloon: since 8.2. +# # Since: 2.1 ## { 'enum': 'MemoryDeviceInfoKind', - 'data': [ 'dimm', 'nvdimm', 'virtio-pmem', 'virtio-mem', 'sgx-epc' ] } + 'data': [ 'dimm', 'nvdimm', 'virtio-pmem', 'virtio-mem', 'sgx-epc', + 'hv-balloon' ] } ## # @PCDIMMDeviceInfoWrapper: @@ -1337,6 +1363,14 @@ { 'struct': 'SgxEPCDeviceInfoWrapper', 'data': { 'data': 'SgxEPCDeviceInfo' } } +## +# @HvBalloonDeviceInfoWrapper: +# +# Since: 8.2 +## +{ 'struct': 'HvBalloonDeviceInfoWrapper', + 'data': { 'data': 'HvBalloonDeviceInfo' } } + ## # @MemoryDeviceInfo: # @@ -1351,7 +1385,8 @@ 'nvdimm': 'PCDIMMDeviceInfoWrapper', 'virtio-pmem': 'VirtioPMEMDeviceInfoWrapper', 'virtio-mem': 'VirtioMEMDeviceInfoWrapper', - 'sgx-epc': 'SgxEPCDeviceInfoWrapper' + 'sgx-epc': 'SgxEPCDeviceInfoWrapper', + 'hv-balloon': 'HvBalloonDeviceInfoWrapper' } }