From patchwork Thu Mar 12 17:53:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 11435197 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 8E6C413B1 for ; Thu, 12 Mar 2020 18:27:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E47120738 for ; Thu, 12 Mar 2020 18:27:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="hMMd2u+V" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726780AbgCLS1l (ORCPT ); Thu, 12 Mar 2020 14:27:41 -0400 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:14589 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726726AbgCLS1l (ORCPT ); Thu, 12 Mar 2020 14:27:41 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 12 Mar 2020 11:26:08 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Thu, 12 Mar 2020 11:27:40 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 12 Mar 2020 11:27:40 -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; Thu, 12 Mar 2020 18:27:40 +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; Thu, 12 Mar 2020 18:27:34 +0000 From: Kirti Wankhede To: , CC: , , , , , , , , , , , , , , , , , , , , "Kirti Wankhede" Subject: [PATCH v13 Kernel 6/7] vfio iommu: Adds flag to indicate dirty pages tracking capability support Date: Thu, 12 Mar 2020 23:23:26 +0530 Message-ID: <1584035607-23166-7-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1584035607-23166-1-git-send-email-kwankhede@nvidia.com> References: <1584035607-23166-1-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=1584037568; bh=wffUtCPToUD96RVkVsFm7jm6cVCQwNMnwaDaxOdEy9Q=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=hMMd2u+Vrbxr9ldQIafIk4ym1R4tm1ODXIvlwqVjmnL2uUNU8hW/Cc8oWxMlHFRe7 jfkBnUX+UHvthnz5ue5YMjzw9SnAfYPnbjxoOWX3PlMZkvn39tqosWcIQjPYuimXGO mKhba716ukG8phlmmEWbZI+iHpEfLTPI9ycZ/UfVquYetZBgaRqeHEgesd8lRJMx52 hMVlrHYnhMD7VzVfT+4PLZLpcTl3QbtIp4TAcGiQ8SNcaWV1HZ+KIw0d0an4hWRIwk tEMlAkxKsResKjb+2Hi/ejjOw67QcOzIOHunSx9iiycN6PJtL4rNFrFdQ5YzyDI/Zj 8e9kKp2TyC+Yw== 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 4037b82c6db0..4f1f116feabc 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2377,7 +2377,8 @@ 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 12b2094f887e..217eaeec1eba 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -947,8 +947,9 @@ struct vfio_device_ioeventfd { 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 */ };