From patchwork Wed Oct 11 17:52:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 13417683 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 23384CDB472 for ; Wed, 11 Oct 2023 17:59:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqdRj-0001ng-3k; Wed, 11 Oct 2023 13:56:35 -0400 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 1qqdRO-0001Nn-Cy for qemu-devel@nongnu.org; Wed, 11 Oct 2023 13:56:16 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqdRM-0006jL-Tm for qemu-devel@nongnu.org; Wed, 11 Oct 2023 13:56:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697046972; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DoIUo/ZpRcnk2IRWay+/r0Syt0sDfoaV5wBJ7Os2/3Q=; b=MdDAaDi7MufdR8xIaOnuQBDPAEhLbEHJqI8lMXsDiHDaDN7rdlN/3YoVJlldkbtldgeC7n KrVahUn8+DbsnbtgQJzQjnsoeCHap/KZ2RtFyr1JB8dZwQxfos2tZ7zV82+Zn5ta3Qai/P HJXIou8v18QeFdg8ql5Ro9JcvB/EW4w= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-228-B61ngbdoNaOE1g7FjCxAjA-1; Wed, 11 Oct 2023 13:56:08 -0400 X-MC-Unique: B61ngbdoNaOE1g7FjCxAjA-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7DFD2101AA6E; Wed, 11 Oct 2023 17:56:07 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.192.71]) by smtp.corp.redhat.com (Postfix) with ESMTP id D4C0A492C3E; Wed, 11 Oct 2023 17:56:04 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, alex.williamson@redhat.com, clg@redhat.com, jean-philippe@linaro.org, mst@redhat.com, pbonzini@redhat.com Cc: peter.maydell@linaro.org, peterx@redhat.com, david@redhat.com, philmd@linaro.org, zhenzhong.duan@intel.com, yi.l.liu@intel.com Subject: [PATCH v3 11/13] virtio-iommu: Consolidate host reserved regions and property set ones Date: Wed, 11 Oct 2023 19:52:27 +0200 Message-ID: <20231011175516.541374-12-eric.auger@redhat.com> In-Reply-To: <20231011175516.541374-1-eric.auger@redhat.com> References: <20231011175516.541374-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=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: 2.1.29 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 Up to now we were exposing to the RESV_MEM probe requests the reserved memory regions set though the reserved-regions array property. Combine those with the host reserved memory regions if any. Those latter are tagged as RESERVED. We don't have more information about them besides then cannot be mapped. Reserved regions set by property have higher priority. Signed-off-by: Eric Auger --- hw/virtio/virtio-iommu.c | 36 ++++++++++++++++++++++++++++++++++++ hw/virtio/trace-events | 1 + 2 files changed, 37 insertions(+) diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 15aadd6fdd..dede0d41aa 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -21,6 +21,7 @@ #include "qemu/log.h" #include "qemu/iov.h" #include "qemu/range.h" +#include "qemu/reserved-region.h" #include "exec/target_page.h" #include "hw/qdev-properties.h" #include "hw/virtio/virtio.h" @@ -1156,6 +1157,40 @@ static int virtio_iommu_set_page_size_mask(IOMMUMemoryRegion *mr, return 0; } +/** + * rebuild_resv_regions: rebuild resv regions with both the + * info of host resv ranges and property set resv ranges + */ +static int rebuild_resv_regions(IOMMUDevice *sdev) +{ + GList *l; + int i = 0; + + /* free the existing list and rebuild it from scratch */ + g_list_free_full(sdev->resv_regions, g_free); + sdev->resv_regions = NULL; + + /* First add host reserved regions if any, all tagged as RESERVED */ + for (l = sdev->host_resv_ranges; l; l = l->next) { + ReservedRegion *reg = g_new0(ReservedRegion, 1); + Range *r = (Range *)l->data; + + reg->type = VIRTIO_IOMMU_RESV_MEM_T_RESERVED; + range_set_bounds(®->range, range_lob(r), range_upb(r)); + sdev->resv_regions = resv_region_list_insert(sdev->resv_regions, reg); + trace_virtio_iommu_host_resv_regions(sdev->iommu_mr.parent_obj.name, i, + range_lob(®->range), + range_upb(®->range)); + i++; + } + /* + * then add higher priority reserved regions set by the machine + * through properties + */ + add_prop_resv_regions(sdev); + return 0; +} + /** * virtio_iommu_set_iova_ranges: Conveys the usable IOVA ranges * @@ -1211,6 +1246,7 @@ static int virtio_iommu_set_iova_ranges(IOMMUMemoryRegion *mr, range_inverse_array(iova_ranges, &sdev->host_resv_ranges, 0, UINT64_MAX); + rebuild_resv_regions(sdev); return 0; error: diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 1cb9027d1e..b49d9c4b0a 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -134,6 +134,7 @@ virtio_iommu_notify_flag_add(const char *name) "add notifier to mr %s" virtio_iommu_notify_flag_del(const char *name) "del notifier from mr %s" virtio_iommu_switch_address_space(uint8_t bus, uint8_t slot, uint8_t fn, bool on) "Device %02x:%02x.%x switching address space (iommu enabled=%d)" virtio_iommu_freeze_granule(uint64_t page_size_mask) "granule set to 0x%"PRIx64 +virtio_iommu_host_resv_regions(const char *name, uint32_t index, uint64_t lob, uint64_t upb) "mr=%s host-resv-reg[%d] = [0x%"PRIx64",0x%"PRIx64"]" # virtio-mem.c virtio_mem_send_response(uint16_t type) "type=%" PRIu16