From patchwork Thu Oct 26 10:30:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13437489 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 D3714C25B6B for ; Thu, 26 Oct 2023 10:50:42 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qvxvB-0003v7-Jq; Thu, 26 Oct 2023 06:49:01 -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 1qvxv4-0003ib-MB for qemu-devel@nongnu.org; Thu, 26 Oct 2023 06:48:57 -0400 Received: from mgamail.intel.com ([134.134.136.126]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qvxv1-0001PR-4x for qemu-devel@nongnu.org; Thu, 26 Oct 2023 06:48:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698317331; x=1729853331; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4fpM8djcG6yzw2/d0EJVHfGLIQl+ddsysHN+ZtJ/98U=; b=mD4S6y2LbuKu/JO8az3vixfI4aX+gol3MdhFbIsKhmq9UOMTtha6Qf2F WcZoO7Ry9feod91+TKVXzB5PUsrtT8vjeZCV+Xqt8c5Tqahk1Dh5DDnwA sW3nfxnaBadbVIfyk/641jV8mdMxV7KPFLwfKHx7NrETCBdmVX9LZ5z3P uKIAy5hppI9PrH4aRia1w4MtOYmpo47q7sDOLJPRiq+wdsz68yyPI5OPT nC2XZFzd7gSy6KKyDEj8WTAA0g2acIKw+WpOh+YOfZ61vZHqCRDqQ4R2q Zq4ImzWJTDGwDs43u3Xfj+H5WGQB/qt+YB3SAnrjASO5/YiU+4zj40iaY w==; X-IronPort-AV: E=McAfee;i="6600,9927,10874"; a="372563726" X-IronPort-AV: E=Sophos;i="6.03,253,1694761200"; d="scan'208";a="372563726" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2023 03:48:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.03,253,1694761200"; d="scan'208";a="463817" Received: from duan-server-s2600bt.bj.intel.com ([10.240.192.147]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2023 03:47:49 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v3 28/37] vfio/iommufd: Add support for iova_ranges Date: Thu, 26 Oct 2023 18:30:55 +0800 Message-Id: <20231026103104.1686921-29-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231026103104.1686921-1-zhenzhong.duan@intel.com> References: <20231026103104.1686921-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=134.134.136.126; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.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, 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 Some vIOMMU such as virtio-iommu use iova ranges from host side to setup reserved ranges for passthrough device, so that guest will not use an iova range beyond host support. Use an uAPI of IOMMUFD to get iova ranges of host side and pass to vIOMMU just like the legacy backend. Signed-off-by: Zhenzhong Duan --- hw/vfio/iommufd.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index c1daaf1c39..18a09d7f5a 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -348,6 +348,52 @@ static int vfio_ram_block_discard_disable(bool state) return ram_block_uncoordinated_discard_disable(state); } +static int vfio_get_info_iova_range(VFIOIOMMUFDContainer *container, + uint32_t ioas_id) +{ + VFIOContainerBase *bcontainer = &container->bcontainer; + struct iommu_ioas_iova_ranges *info; + struct iommu_iova_range *iova_ranges; + int ret, sz, fd = container->be->fd; + + info = g_malloc0(sizeof(*info)); + info->size = sizeof(*info); + info->ioas_id = ioas_id; + + ret = ioctl(fd, IOMMU_IOAS_IOVA_RANGES, info); + if (ret && errno != EMSGSIZE) { + goto error; + } + + sz = info->num_iovas * sizeof(struct iommu_iova_range); + info = g_realloc(info, sizeof(*info) + sz); + info->allowed_iovas = (uint64_t)(info + 1); + + ret = ioctl(fd, IOMMU_IOAS_IOVA_RANGES, info); + if (ret) { + goto error; + } + + iova_ranges = (struct iommu_iova_range *)info->allowed_iovas; + + for (int i = 0; i < info->num_iovas; i++) { + Range *range = g_new(Range, 1); + + range_set_bounds(range, iova_ranges[i].start, iova_ranges[i].last); + bcontainer->iova_ranges = + range_list_insert(bcontainer->iova_ranges, range); + } + + g_free(info); + return 0; + +error: + ret = -errno; + g_free(info); + error_report("vfio/iommufd: Cannot get iova ranges: %m"); + return ret; +} + static int iommufd_attach_device(char *name, VFIODevice *vbasedev, AddressSpace *as, Error **errp) { @@ -425,6 +471,7 @@ static int iommufd_attach_device(char *name, VFIODevice *vbasedev, } bcontainer->pgsizes = qemu_real_host_page_size(); + vfio_get_info_iova_range(container, ioas_id); bcontainer->listener = vfio_memory_listener; memory_listener_register(&bcontainer->listener, bcontainer->space->as);