From: Lu Baolu <baolu.lu@linux.intel.com>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>,
iommu@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Joerg Roedel <joro@8bytes.org>,
David Woodhouse <dwmw2@infradead.org>
Cc: Yi Liu <yi.l.liu@intel.com>, "Tian, Kevin" <kevin.tian@intel.com>,
Raj Ashok <ashok.raj@intel.com>,
Alex Williamson <alex.williamson@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
Jonathan Cameron <jic23@kernel.org>,
Eric Auger <eric.auger@redhat.com>
Subject: Re: [PATCH V9 10/10] iommu/vt-d: Report PASID format as domain attribute
Date: Thu, 30 Jan 2020 15:54:44 +0800 [thread overview]
Message-ID: <45cacbf2-c326-847d-dc6e-949e3e8de78d@linux.intel.com> (raw)
In-Reply-To: <1580277713-66934-11-git-send-email-jacob.jun.pan@linux.intel.com>
Hi,
On 2020/1/29 14:01, Jacob Pan wrote:
> Report the domain attribute of PASID table format. As multiple formats
> of PASID table entry are supported, it is important for the guest to
> know which format to use in virtual IOMMU. The result will be used for
> binding device with guest PASID.
>
> Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
> ---
> drivers/iommu/intel-iommu.c | 22 ++++++++++++++++++++++
> include/linux/iommu.h | 1 +
> 2 files changed, 23 insertions(+)
>
> diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
> index 2f0bf7cc70ce..b3778e86dc32 100644
> --- a/drivers/iommu/intel-iommu.c
> +++ b/drivers/iommu/intel-iommu.c
> @@ -6413,6 +6413,27 @@ intel_iommu_domain_set_attr(struct iommu_domain *domain,
> return ret;
> }
>
> +static int intel_iommu_domain_get_attr(struct iommu_domain *domain,
> + enum iommu_attr attr, void *data)
> +{
> + /* Only used for guest */
> + switch (domain->type) {
> + case IOMMU_DOMAIN_DMA:
> + return -ENODEV;
> + case IOMMU_DOMAIN_UNMANAGED:
> + switch (attr) {
> + case DOMAIN_ATTR_PASID_FORMAT:
> + *(int *)data = IOMMU_PASID_FORMAT_INTEL_VTD;
> + return 0;
> + default:
> + return -ENODEV;
> + }
> + break;
> + default:
> + return -EINVAL;
> + }
> +}
> +
> const struct iommu_ops intel_iommu_ops = {
> .capable = intel_iommu_capable,
> .domain_alloc = intel_iommu_domain_alloc,
> @@ -6432,6 +6453,7 @@ const struct iommu_ops intel_iommu_ops = {
> .put_resv_regions = intel_iommu_put_resv_regions,
> .apply_resv_region = intel_iommu_apply_resv_region,
> .device_group = pci_device_group,
> + .domain_get_attr = intel_iommu_domain_get_attr,
> .dev_has_feat = intel_iommu_dev_has_feat,
> .dev_feat_enabled = intel_iommu_dev_feat_enabled,
> .dev_enable_feat = intel_iommu_dev_enable_feat,
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index f2223cbb5fd5..9718c109ea0a 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -126,6 +126,7 @@ enum iommu_attr {
> DOMAIN_ATTR_FSL_PAMUV1,
> DOMAIN_ATTR_NESTING, /* two stages of translation */
> DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
> + DOMAIN_ATTR_PASID_FORMAT,
> DOMAIN_ATTR_MAX,
> };
Need to separate the new domain attribution definition and the vt-d
implementation.
Best regards,
baolu
next prev parent reply other threads:[~2020-01-30 7:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-29 6:01 [PATCH V9 00/10] Nested Shared Virtual Address (SVA) VT-d support Jacob Pan
2020-01-29 6:01 ` [PATCH V9 01/10] iommu/vt-d: Move domain helper to header Jacob Pan
2020-01-29 6:01 ` [PATCH V9 02/10] iommu/uapi: Define a mask for bind data Jacob Pan
2020-02-12 12:43 ` Auger Eric
2020-03-20 21:35 ` Jacob Pan
2020-01-29 6:01 ` [PATCH V9 03/10] iommu/vt-d: Add nested translation helper function Jacob Pan
2020-02-12 12:43 ` Auger Eric
2020-02-24 22:55 ` Jacob Pan
2020-01-29 6:01 ` [PATCH V9 04/10] iommu/vt-d: Add bind guest PASID support Jacob Pan
2020-01-30 7:22 ` Lu Baolu
2020-01-31 21:48 ` Jacob Pan
2020-01-29 6:01 ` [PATCH V9 05/10] iommu/vt-d: Support flushing more translation cache types Jacob Pan
2020-02-12 12:55 ` Auger Eric
2020-02-14 23:27 ` Jacob Pan
2020-02-25 8:32 ` Auger Eric
2020-01-29 6:01 ` [PATCH V9 06/10] iommu/vt-d: Add svm/sva invalidate function Jacob Pan
2020-02-12 13:13 ` Auger Eric
2020-02-14 23:48 ` Jacob Pan
2020-02-21 6:34 ` Liu, Yi L
2020-02-21 19:08 ` Jacob Pan
2020-01-29 6:01 ` [PATCH V9 07/10] iommu/vt-d: Cache virtual command capability register Jacob Pan
2020-02-12 13:00 ` Auger Eric
2020-02-21 20:20 ` Jacob Pan
2020-01-29 6:01 ` [PATCH V9 08/10] iommu/vt-d: Enlightened PASID allocation Jacob Pan
2020-01-29 6:01 ` [PATCH V9 09/10] iommu/vt-d: Add custom allocator for IOASID Jacob Pan
2020-01-29 6:01 ` [PATCH V9 10/10] iommu/vt-d: Report PASID format as domain attribute Jacob Pan
2020-01-30 7:54 ` Lu Baolu [this message]
2020-02-04 5:43 ` Jacob Pan
2020-01-29 12:18 ` [PATCH V9 00/10] Nested Shared Virtual Address (SVA) VT-d support Liu, Yi L
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