From: Kunkun Jiang <jiangkunkun@huawei.com>
To: Eric Auger <eric.auger@redhat.com>, <eric.auger.pro@gmail.com>,
<iommu@lists.linux-foundation.org>,
<linux-kernel@vger.kernel.org>, <kvm@vger.kernel.org>,
<kvmarm@lists.cs.columbia.edu>, <will@kernel.org>,
<joro@8bytes.org>, <maz@kernel.org>, <robin.murphy@arm.com>,
<alex.williamson@redhat.com>
Cc: <jean-philippe@linaro.org>, <jacob.jun.pan@linux.intel.com>,
<nicoleotsuka@gmail.com>, <vivek.gautam@arm.com>,
<yi.l.liu@intel.com>, <zhangfei.gao@linaro.org>,
<wanghaibin.wang@huawei.com>, Keqian Zhu <zhukeqian1@huawei.com>,
<yuzenghui@huawei.com>
Subject: Re: [PATCH v11 04/13] vfio/pci: Add VFIO_REGION_TYPE_NESTED region type
Date: Thu, 17 Dec 2020 19:49:55 +0800 [thread overview]
Message-ID: <2b5031d4-fa1a-c893-e7e4-56c68da600e4@huawei.com> (raw)
In-Reply-To: <20201116110030.32335-5-eric.auger@redhat.com>
Hi Eric,
On 2020/11/16 19:00, Eric Auger wrote:
> Add a new specific DMA_FAULT region aiming to exposed nested mode
> translation faults. This region only is exposed if the device
> is attached to a nested domain.
>
> The region has a ring buffer that contains the actual fault
> records plus a header allowing to handle it (tail/head indices,
> max capacity, entry size). At the moment the region is dimensionned
> for 512 fault records.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>
> ---
[...]
> diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
> index b352e76cfb71..629dfb38d9e7 100644
> --- a/include/uapi/linux/vfio.h
> +++ b/include/uapi/linux/vfio.h
> @@ -343,6 +343,9 @@ struct vfio_region_info_cap_type {
> /* sub-types for VFIO_REGION_TYPE_GFX */
> #define VFIO_REGION_SUBTYPE_GFX_EDID (1)
>
> +#define VFIO_REGION_TYPE_NESTED (2)
> +#define VFIO_REGION_SUBTYPE_NESTED_DMA_FAULT (1)
> +
The macro *define VFIO_REGION_TYPE_NESTED (2)* is in conflict with
*#define VFIO_REGION_TYPE_CCW (2)*.
Thanks,
Kunkun Jiang.
next prev parent reply other threads:[~2020-12-17 11:50 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-16 11:00 [PATCH v11 00/13] SMMUv3 Nested Stage Setup (VFIO part) Eric Auger
2020-11-16 11:00 ` [PATCH v11 01/13] vfio: VFIO_IOMMU_SET_PASID_TABLE Eric Auger
2020-11-17 2:11 ` kernel test robot
2020-11-24 21:31 ` Alex Williamson
2021-02-02 12:34 ` Keqian Zhu
2021-02-22 10:53 ` Auger Eric
2021-02-22 12:20 ` Keqian Zhu
2021-02-22 16:12 ` Auger Eric
2020-11-16 11:00 ` [PATCH v11 02/13] vfio: VFIO_IOMMU_CACHE_INVALIDATE Eric Auger
2020-11-16 11:00 ` [PATCH v11 03/13] vfio: VFIO_IOMMU_SET_MSI_BINDING Eric Auger
2021-02-02 12:08 ` Keqian Zhu
2020-11-16 11:00 ` [PATCH v11 04/13] vfio/pci: Add VFIO_REGION_TYPE_NESTED region type Eric Auger
2020-12-17 11:49 ` Kunkun Jiang [this message]
2021-02-23 12:45 ` Shenming Lu
2021-02-23 12:57 ` Auger Eric
2020-11-16 11:00 ` [PATCH v11 05/13] vfio/pci: Register an iommu fault handler Eric Auger
2020-11-16 13:51 ` kernel test robot
2020-11-16 19:30 ` kernel test robot
2020-11-16 11:00 ` [PATCH v11 06/13] vfio/pci: Allow to mmap the fault queue Eric Auger
2020-11-16 11:00 ` [PATCH v11 07/13] vfio: Use capability chains to handle device specific irq Eric Auger
2020-11-16 11:00 ` [PATCH v11 08/13] vfio/pci: Add framework for custom interrupt indices Eric Auger
2020-11-23 12:51 ` Shameerali Kolothum Thodi
2020-11-24 8:35 ` Auger Eric
2020-11-16 11:00 ` [PATCH v11 09/13] vfio: Add new IRQ for DMA fault reporting Eric Auger
2020-11-16 11:00 ` [PATCH v11 10/13] vfio/pci: Register and allow DMA FAULT IRQ signaling Eric Auger
2020-11-16 11:00 ` [PATCH v11 11/13] vfio: Document nested stage control Eric Auger
2020-11-16 11:00 ` [PATCH v11 12/13] vfio/pci: Register a DMA fault response region Eric Auger
2021-01-08 15:19 ` Shameerali Kolothum Thodi
2021-02-18 10:36 ` Shameerali Kolothum Thodi
2021-02-18 10:48 ` Auger Eric
2020-11-16 11:00 ` [PATCH v11 13/13] vfio/pci: Inject page response upon response region fill Eric Auger
2021-03-15 18:04 ` [PATCH v11 00/13] SMMUv3 Nested Stage Setup (VFIO part) Krishna Reddy
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