From patchwork Tue Jul 9 01:59:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 11036125 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 51817138D for ; Tue, 9 Jul 2019 04:17:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3F809284C0 for ; Tue, 9 Jul 2019 04:17:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 31457285E3; Tue, 9 Jul 2019 04:17:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.0 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C1763284C0 for ; Tue, 9 Jul 2019 04:17:38 +0000 (UTC) Received: from localhost ([::1]:46614 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hkhZS-0004oS-5G for patchwork-qemu-devel@patchwork.kernel.org; Tue, 09 Jul 2019 00:17:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35873) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hkhUg-0007hj-Al for qemu-devel@nongnu.org; Tue, 09 Jul 2019 00:12:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hkhUf-0005Gy-0N for qemu-devel@nongnu.org; Tue, 09 Jul 2019 00:12:42 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:12646) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hkhUe-0005GI-PA for qemu-devel@nongnu.org; Tue, 09 Jul 2019 00:12:40 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 08 Jul 2019 21:12:37 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Mon, 08 Jul 2019 21:12:38 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Mon, 08 Jul 2019 21:12:38 -0700 Received: from HQMAIL104.nvidia.com (172.18.146.11) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 9 Jul 2019 02:02:00 +0000 Received: from kwankhede-dev.nvidia.com (10.124.1.5) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 9 Jul 2019 02:01:54 +0000 From: Kirti Wankhede To: , Date: Tue, 9 Jul 2019 07:29:03 +0530 Message-ID: <1562637554-22439-3-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1562637554-22439-1-git-send-email-kwankhede@nvidia.com> References: <1562637554-22439-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1562645557; bh=nylc0cVMKEEnjbH8m1Te0YQIduVRuoNb4byY+ts2y18=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=FuveIi4qLe2J4APsOccS8LYFd4FNkIWlQgykRnt0MilMXL61qhIPVhdlUADZb7k7Z DnZzMLDrFh+/Mgzmvugs3wwClYph7ybEl9wbTC4+YteSv2ClbXen8aumlKkmgQLATr JZdLH2W/puwHoST46AdehY51/kLGoXVDECfT/OBqwvKT9dpqKCYfETEUV+fZBBuNs3 7008HD6laWS0EKkSzfZUfqgGTGxA13a5hQqDCQOJ/JILenLVNrne50Im7Xzd5OzBQA JXuocGHDu0fAwaCWusrGwOgwu31Ob022zeQJsbZ/GDqUE3vxzLbRfLF/4BhapAmh61 HAoffRnfPFyfg== X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 X-Received-From: 216.228.121.65 Subject: [Qemu-devel] [PATCH v6 02/13] vfio: Add function to unmap VFIO region 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: Zhengxiao.zx@Alibaba-inc.com, kevin.tian@intel.com, yi.l.liu@intel.com, yan.y.zhao@intel.com, eskultet@redhat.com, ziye.yang@intel.com, qemu-devel@nongnu.org, cohuck@redhat.com, shuangtai.tst@alibaba-inc.com, dgilbert@redhat.com, zhi.a.wang@intel.com, mlevitsk@redhat.com, pasic@linux.ibm.com, aik@ozlabs.ru, Kirti Wankhede , eauger@redhat.com, felipe@nutanix.com, jonathan.davies@nutanix.com, changpeng.liu@intel.com, Ken.Xue@amd.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This function is used in follwing patch in this series. Migration region is mmaped when migration starts and will be unmapped when migration is complete. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia --- hw/vfio/common.c | 20 ++++++++++++++++++++ hw/vfio/trace-events | 1 + include/hw/vfio/vfio-common.h | 1 + 3 files changed, 22 insertions(+) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index a859298fdad9..de74dae8d6a6 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -964,6 +964,26 @@ int vfio_region_mmap(VFIORegion *region) return 0; } +void vfio_region_unmap(VFIORegion *region) +{ + int i; + + if (!region->mem) { + return; + } + + for (i = 0; i < region->nr_mmaps; i++) { + trace_vfio_region_unmap(memory_region_name(®ion->mmaps[i].mem), + region->mmaps[i].offset, + region->mmaps[i].offset + + region->mmaps[i].size - 1); + memory_region_del_subregion(region->mem, ®ion->mmaps[i].mem); + munmap(region->mmaps[i].mmap, region->mmaps[i].size); + object_unparent(OBJECT(®ion->mmaps[i].mem)); + region->mmaps[i].mmap = NULL; + } +} + void vfio_region_exit(VFIORegion *region) { int i; diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events index b1ef55a33ffd..8cdc27946cb8 100644 --- a/hw/vfio/trace-events +++ b/hw/vfio/trace-events @@ -111,6 +111,7 @@ vfio_region_mmap(const char *name, unsigned long offset, unsigned long end) "Reg vfio_region_exit(const char *name, int index) "Device %s, region %d" vfio_region_finalize(const char *name, int index) "Device %s, region %d" vfio_region_mmaps_set_enabled(const char *name, bool enabled) "Region %s mmaps enabled: %d" +vfio_region_unmap(const char *name, unsigned long offset, unsigned long end) "Region %s unmap [0x%lx - 0x%lx]" vfio_region_sparse_mmap_header(const char *name, int index, int nr_areas) "Device %s region %d: %d sparse mmap entries" vfio_region_sparse_mmap_entry(int i, unsigned long start, unsigned long end) "sparse entry %d [0x%lx - 0x%lx]" vfio_get_dev_region(const char *name, int index, uint32_t type, uint32_t subtype) "%s index %d, %08x/%0x8" diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 9107bd41c030..93493891ba40 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -171,6 +171,7 @@ int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, int index, const char *name); int vfio_region_mmap(VFIORegion *region); void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled); +void vfio_region_unmap(VFIORegion *region); void vfio_region_exit(VFIORegion *region); void vfio_region_finalize(VFIORegion *region); void vfio_reset_handler(void *opaque);