From patchwork Tue Nov 12 17:05:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 11239903 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BACAF16B1 for ; Tue, 12 Nov 2019 17:41:07 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8DC4021925 for ; Tue, 12 Nov 2019 17:41:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="aK+1jm3I" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8DC4021925 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:38346 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iUaA6-0003rr-JI for patchwork-qemu-devel@patchwork.kernel.org; Tue, 12 Nov 2019 12:41:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34496) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iUa8p-0002PH-2f for qemu-devel@nongnu.org; Tue, 12 Nov 2019 12:39:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iUa8n-0005ux-5a for qemu-devel@nongnu.org; Tue, 12 Nov 2019 12:39:46 -0500 Received: from hqemgate14.nvidia.com ([216.228.121.143]:3244) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iUa8m-0005uP-Ng for qemu-devel@nongnu.org; Tue, 12 Nov 2019 12:39:45 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 12 Nov 2019 09:34:39 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 12 Nov 2019 09:34:36 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 12 Nov 2019 09:34:36 -0800 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Nov 2019 17:34:35 +0000 Received: from kwankhede-dev.nvidia.com (10.124.1.5) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 12 Nov 2019 17:34:30 +0000 From: Kirti Wankhede To: , Subject: [PATCH v9 QEMU 02/15] vfio iommu: Add ioctl defination to get dirty pages bitmap. Date: Tue, 12 Nov 2019 22:35:11 +0530 Message-ID: <1573578324-8389-3-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1573578324-8389-1-git-send-email-kwankhede@nvidia.com> References: <1573578324-8389-1-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=1573580079; bh=VGevCBZwPqAu8fmC6VNF9iPQRZ2n6SeKBEqK0QnWDRQ=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=aK+1jm3I6HMnHWMIK/QGs5SDrYpnm6aSpSL2EI4o/ZtZpPq4pA6VtCn9yyKZtDFuF Qzxtv6lLTj6pgFj9Y9LS9HjIIxtsTxAvZHoI6GaIvn/4DPyLKBUCHyNbCJnh0WzWFb 3LGN1OGBiKVAV0wiPoPg/aQMaqZCIVWLRoZUUty5rcn5OsR65gG055x8NH5023IMHr usX4Bq71tVwchA04A9P421GraVukeJhqxvsR1M6GLrDb2aCaR2NKuw8SG7dTZGChlZ zojQ5fXm14BtfZPx3c0iRlV/oxLZrq8Ctm6u7AGNlVLa22q5bIOVJVflDJMKPbyRVH g+GJ6b0qHxJXA== X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 216.228.121.143 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" All pages pinned by vendor driver through vfio_pin_pages API should be considered as dirty during migration. IOMMU container maintains a list of all such pinned pages. Added an ioctl defination to get bitmap of such pinned pages for requested IO virtual address range. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia --- linux-headers/linux/vfio.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h index 597b3d4bf45e..2b00c732f313 100644 --- a/linux-headers/linux/vfio.h +++ b/linux-headers/linux/vfio.h @@ -902,6 +902,29 @@ struct vfio_iommu_type1_dma_unmap { #define VFIO_IOMMU_ENABLE _IO(VFIO_TYPE, VFIO_BASE + 15) #define VFIO_IOMMU_DISABLE _IO(VFIO_TYPE, VFIO_BASE + 16) +/** + * VFIO_IOMMU_GET_DIRTY_BITMAP - _IOWR(VFIO_TYPE, VFIO_BASE + 17, + * struct vfio_iommu_type1_dirty_bitmap) + * + * IOCTL to get dirty pages bitmap for IOMMU container during migration. + * Get dirty pages bitmap of given IO virtual addresses range using + * struct vfio_iommu_type1_dirty_bitmap. Caller sets argsz, which is size of + * struct vfio_iommu_type1_dirty_bitmap. User should allocate memory to get + * bitmap and should set size of allocated memory in bitmap_size field. + * One bit is used to represent per page consecutively starting from iova + * offset. Bit set indicates page at that offset from iova is dirty. + */ +struct vfio_iommu_type1_dirty_bitmap { + __u32 argsz; + __u32 flags; + __u64 iova; /* IO virtual address */ + __u64 size; /* Size of iova range */ + __u64 bitmap_size; /* in bytes */ + void *bitmap; /* one bit per page */ +}; + +#define VFIO_IOMMU_GET_DIRTY_BITMAP _IO(VFIO_TYPE, VFIO_BASE + 17) + /* -------- Additional API for SPAPR TCE (Server POWERPC) IOMMU -------- */ /*