From patchwork Mon Mar 30 16:50:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 11466123 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 34F81159A for ; Mon, 30 Mar 2020 17:24:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13A8B20781 for ; Mon, 30 Mar 2020 17:24:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="JOchW1si" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729609AbgC3RYy (ORCPT ); Mon, 30 Mar 2020 13:24:54 -0400 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:8337 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729054AbgC3RYy (ORCPT ); Mon, 30 Mar 2020 13:24:54 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 30 Mar 2020 10:24:40 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Mon, 30 Mar 2020 10:24:53 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Mon, 30 Mar 2020 10:24:53 -0700 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 30 Mar 2020 17:24:53 +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; Mon, 30 Mar 2020 17:24:46 +0000 From: Kirti Wankhede To: , CC: , , , , , , , , , , , , , , , , , , , , "Kirti Wankhede" Subject: [PATCH v17 Kernel 6/7] vfio iommu: Adds flag to indicate dirty pages tracking capability support Date: Mon, 30 Mar 2020 22:20:43 +0530 Message-ID: <1585587044-2408-7-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1585587044-2408-1-git-send-email-kwankhede@nvidia.com> References: <1585587044-2408-1-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=1585589080; bh=HmCqHH2I4fmHzCZdrV/Nh3fYOyJ7Zyzr6LDRd5l0BCA=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=JOchW1siWS/3HJN6xcVDqUZY8Np/LACCqQYGTBXPXuAsZTDqCENBej+C0Aqsjzy6G 7PVbVYmg3lQ8z/v+X+pXgjX8HK1VOpaLWqh6VNjDZnH52VlkwLw8NjIVVwaBBKfhD1 ZVHUWp1jYwvVWsO1aphw0Bg6Zao99m0cB4klJTLe3BXdqi9+YOe+gG1mTsi0S4hKms SKKZoK0orqwNWCP/WinHGnjPgvyAUqNEvZl5OvzWXHp7zKWB8Gv+yetOq554myYhra udLMdb0yeGVSU8K+7C0K50PpRGonrVxuf7D83SILvJy4chdNfDgQKI1FMB0BRJBPTl pcRP6NsRJ5phA== Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Flag VFIO_IOMMU_INFO_DIRTY_PGS in VFIO_IOMMU_GET_INFO indicates that driver support dirty pages tracking. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia --- drivers/vfio/vfio_iommu_type1.c | 3 ++- include/uapi/linux/vfio.h | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 266550bd7307..9fe12b425976 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2390,7 +2390,8 @@ static long vfio_iommu_type1_ioctl(void *iommu_data, info.cap_offset = 0; /* output, no-recopy necessary */ } - info.flags = VFIO_IOMMU_INFO_PGSIZES; + info.flags = VFIO_IOMMU_INFO_PGSIZES | + VFIO_IOMMU_INFO_DIRTY_PGS; info.iova_pgsizes = vfio_pgsize_bitmap(iommu); diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index e3cbf8b78623..0fe7c9a6f211 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -985,8 +985,9 @@ struct vfio_device_feature { struct vfio_iommu_type1_info { __u32 argsz; __u32 flags; -#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ -#define VFIO_IOMMU_INFO_CAPS (1 << 1) /* Info supports caps */ +#define VFIO_IOMMU_INFO_PGSIZES (1 << 0) /* supported page sizes info */ +#define VFIO_IOMMU_INFO_CAPS (1 << 1) /* Info supports caps */ +#define VFIO_IOMMU_INFO_DIRTY_PGS (1 << 2) /* supports dirty page tracking */ __u64 iova_pgsizes; /* Bitmap of supported page sizes */ __u32 cap_offset; /* Offset within info struct of first cap */ };