From: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Jacob Pan <jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: Lan Tianyu <tianyu.lan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Raj Ashok <ashok.raj-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Rafael Wysocki
<rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>,
David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [PATCH v4 11/22] driver core: add per device iommu param
Date: Fri, 23 Mar 2018 09:12:09 +0100 [thread overview]
Message-ID: <20180323081209.GA27808@kroah.com> (raw)
In-Reply-To: <1521774734-48433-12-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
On Thu, Mar 22, 2018 at 08:12:03PM -0700, Jacob Pan wrote:
> DMA faults can be detected by IOMMU at device level. Adding a pointer
> to struct device allows IOMMU subsystem to report relevant faults
> back to the device driver for further handling.
> For direct assigned device (or user space drivers), guest OS holds
> responsibility to handle and respond per device IOMMU fault.
> Therefore we need fault reporting mechanism to propagate faults beyond
> IOMMU subsystem.
>
> There are two other IOMMU data pointers under struct device today, here
> we introduce iommu_param as a parent pointer such that all device IOMMU
> data can be consolidated here. The idea was suggested here by Greg KH
> and Joerg. The name iommu_param is chosen here since iommu_data has been used.
>
> Suggested-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
> Signed-off-by: Jacob Pan <jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
> Link: https://lkml.org/lkml/2017/10/6/81
Acked-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
WARNING: multiple messages have this Message-ID (diff)
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: iommu@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Joerg Roedel <joro@8bytes.org>,
David Woodhouse <dwmw2@infradead.org>,
Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
Rafael Wysocki <rafael.j.wysocki@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
Lan Tianyu <tianyu.lan@intel.com>,
"Tian, Kevin" <kevin.tian@intel.com>,
Raj Ashok <ashok.raj@intel.com>,
Alex Williamson <alex.williamson@redhat.com>,
Jean Delvare <khali@linux-fr.org>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH v4 11/22] driver core: add per device iommu param
Date: Fri, 23 Mar 2018 09:12:09 +0100 [thread overview]
Message-ID: <20180323081209.GA27808@kroah.com> (raw)
In-Reply-To: <1521774734-48433-12-git-send-email-jacob.jun.pan@linux.intel.com>
On Thu, Mar 22, 2018 at 08:12:03PM -0700, Jacob Pan wrote:
> DMA faults can be detected by IOMMU at device level. Adding a pointer
> to struct device allows IOMMU subsystem to report relevant faults
> back to the device driver for further handling.
> For direct assigned device (or user space drivers), guest OS holds
> responsibility to handle and respond per device IOMMU fault.
> Therefore we need fault reporting mechanism to propagate faults beyond
> IOMMU subsystem.
>
> There are two other IOMMU data pointers under struct device today, here
> we introduce iommu_param as a parent pointer such that all device IOMMU
> data can be consolidated here. The idea was suggested here by Greg KH
> and Joerg. The name iommu_param is chosen here since iommu_data has been used.
>
> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
> Link: https://lkml.org/lkml/2017/10/6/81
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2018-03-23 8:12 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-23 3:11 [PATCH v4 00/22] IOMMU and VT-d driver support for Shared Virtual Address (SVA) Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:11 ` [PATCH v4 01/22] iommu: introduce bind_pasid_table API function Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:11 ` [PATCH v4 07/22] iommu/vt-d: fix dev iotlb pfsid use Jacob Pan
[not found] ` <1521774734-48433-1-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-03-23 3:11 ` [PATCH v4 02/22] iommu/vt-d: move device_domain_info to header Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:11 ` [PATCH v4 03/22] iommu/vt-d: add a flag for pasid table bound status Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:11 ` [PATCH v4 04/22] iommu/vt-d: add bind_pasid_table function Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:11 ` [PATCH v4 05/22] iommu: introduce iommu invalidate API function Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:11 ` [PATCH v4 06/22] iommu/vt-d: add definitions for PFSID Jacob Pan
2018-03-23 3:11 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 08/22] iommu/vt-d: support flushing more translation cache types Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 09/22] iommu/vt-d: add svm/sva invalidate function Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 10/22] iommu: introduce device fault data Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 11/22] driver core: add per device iommu param Jacob Pan
2018-03-23 3:12 ` Jacob Pan
[not found] ` <1521774734-48433-12-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-03-23 8:12 ` Greg Kroah-Hartman [this message]
2018-03-23 8:12 ` Greg Kroah-Hartman
2018-03-23 3:12 ` [PATCH v4 12/22] iommu: introduce device fault report API Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 13/22] iommu: introduce page response function Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 14/22] iommu: handle page response timeout Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 16/22] iommu/vt-d: report non-recoverable faults to device Jacob Pan
2018-03-23 3:12 ` Jacob Pan
[not found] ` <1521774734-48433-17-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-05-14 6:55 ` Liu, Yi L
2018-05-14 6:55 ` Liu, Yi L
2018-03-23 3:12 ` [PATCH v4 17/22] iommu/intel-svm: report device page request Jacob Pan
2018-03-23 3:12 ` Jacob Pan
[not found] ` <1521774734-48433-18-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-05-14 6:56 ` Liu, Yi L
2018-05-14 6:56 ` Liu, Yi L
[not found] ` <A2975661238FB949B60364EF0F2C257439BEFA7F-0J0gbvR4kTg/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2018-05-14 18:30 ` Jacob Pan
2018-05-14 18:30 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 18/22] iommu/intel-svm: replace dev ops with fault report API Jacob Pan
2018-03-23 3:12 ` Jacob Pan
2018-03-23 3:12 ` [PATCH v4 20/22] iommu/vt-d: add intel iommu page response function Jacob Pan
2018-03-23 3:12 ` Jacob Pan
[not found] ` <1521774734-48433-21-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-03-24 23:19 ` kbuild test robot
2018-03-24 23:19 ` kbuild test robot
2018-03-24 23:19 ` [RFC PATCH] iommu/vt-d: intel_iommu_page_response() can be static kbuild test robot
2018-03-24 23:19 ` kbuild test robot
2018-03-23 3:12 ` [PATCH v4 15/22] iommu/config: add build dependency for dmar Jacob Pan
2018-03-23 3:12 ` [PATCH v4 19/22] iommu/intel-svm: do not flush iotlb for viommu Jacob Pan
2018-03-23 3:12 ` [PATCH v4 21/22] trace/iommu: add sva trace events Jacob Pan
2018-03-23 3:12 ` [PATCH v4 22/22] iommu: use sva invalidate and device fault trace event Jacob Pan
-- strict thread matches above, loose matches on Subject: below --
2018-04-16 21:48 [PATCH v4 00/22] IOMMU and VT-d driver support for Shared Virtual Address (SVA) Jacob Pan
[not found] ` <1523915351-54415-1-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-04-16 21:49 ` [PATCH v4 11/22] driver core: add per device iommu param Jacob Pan
2018-04-16 21:49 ` Jacob Pan
[not found] ` <1523915351-54415-12-git-send-email-jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-04-23 10:26 ` Greg Kroah-Hartman
2018-04-23 10:26 ` Greg Kroah-Hartman
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