From patchwork Tue Jul 9 09:49:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 1129667 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.b="bQP5q9QY"; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 45jd0Y4zBHz9sMr for ; Tue, 9 Jul 2019 19:52:45 +1000 (AEST) Received: from localhost ([::1]:48188 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hkmnj-0003co-RC for incoming@patchwork.ozlabs.org; Tue, 09 Jul 2019 05:52:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49852) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hkmnC-0003X8-J6 for qemu-devel@nongnu.org; Tue, 09 Jul 2019 05:52:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hkmnB-00041q-Gh for qemu-devel@nongnu.org; Tue, 09 Jul 2019 05:52:10 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:2499) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hkmnB-00041F-8U for qemu-devel@nongnu.org; Tue, 09 Jul 2019 05:52:09 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 09 Jul 2019 02:52:12 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 09 Jul 2019 02:52:07 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 09 Jul 2019 02:52:07 -0700 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 9 Jul 2019 09:52:07 +0000 Received: from kwankhede-dev.nvidia.com (10.124.1.5) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 9 Jul 2019 09:52:01 +0000 From: Kirti Wankhede To: , Date: Tue, 9 Jul 2019 15:19:09 +0530 Message-ID: <1562665760-26158-3-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1562665760-26158-1-git-send-email-kwankhede@nvidia.com> References: <1562665760-26158-1-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=1562665932; 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=bQP5q9QY7bpzOZGOx3ITvWdd9F/uPeh1Tj0PE4h2ivmhPcFi4LaIjUSAIbDrHLpxa ezQGwoMaRAqg6IMW8e3eqPyxkE5PGD/fAL25o4pTLuXosSXMAZjNWo+7iIhx32Obdn PHLXpjfkGFQHi3PZkaMXL1zqWiFIz9JgIvJmDfYj0H27ldwIiOmsof8oh2z000TN7g Chg45hzqvjvQqkw4m8VjPopagcmQO+DmisFE4qwh60BN41L8oE1KsY9KXTxniFVspr HCZtkUyk9p8maHDtaJtrXh7nquwbhcxvQ4hXK51PHeMWDaTEsaA3c+ExEVIcAJ2MZQ 6or5kYulFfmpQ== X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 X-Received-From: 216.228.121.64 Subject: [Qemu-devel] [PATCH v7 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" 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 Reviewed-by: Cornelia Huck --- 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);