From: Auger Eric <eric.auger@redhat.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>,
Alex Williamson <alex.williamson@redhat.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
Raj Ashok <ashok.raj@intel.com>, Jonathan Corbet <corbet@lwn.net>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
Christoph Hellwig <hch@infradead.org>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v7 3/7] iommu/uapi: Introduce enum type for PASID data format
Date: Thu, 13 Aug 2020 11:29:04 +0200 [thread overview]
Message-ID: <98781b4e-fe8e-fa65-4b77-c5221d241821@redhat.com> (raw)
In-Reply-To: <1596068467-49322-4-git-send-email-jacob.jun.pan@linux.intel.com>
Hi Jacob,
On 7/30/20 2:21 AM, Jacob Pan wrote:
> There can be multiple vendor-specific PASID data formats used in UAPI
> structures. This patch adds enum type with a last entry which makes
> range checking much easier.
>
> Suggested-by: Alex Williamson <alex.williamson@redhat.com>
> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
> ---
> include/uapi/linux/iommu.h | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h
> index d5e9014f690e..abf4455a3495 100644
> --- a/include/uapi/linux/iommu.h
> +++ b/include/uapi/linux/iommu.h
> @@ -294,11 +294,16 @@ struct iommu_gpasid_bind_data_vtd {
> IOMMU_SVA_VTD_GPASID_PCD | \
> IOMMU_SVA_VTD_GPASID_PWT)
>
> +enum iommu_pasid_data_format {
> + IOMMU_PASID_FORMAT_INTEL_VTD = 1,
> + IOMMU_PASID_FORMAT_LAST,
> +};
> +
> /**
> * struct iommu_gpasid_bind_data - Information about device and guest PASID binding
> * @argsz: User filled size of this data
> * @version: Version of this data structure
> - * @format: PASID table entry format
> + * @format: PASID table entry format of enum iommu_pasid_data_format type
> * @flags: Additional information on guest bind request
> * @gpgd: Guest page directory base of the guest mm to bind
> * @hpasid: Process address space ID used for the guest mm in host IOMMU
> @@ -317,7 +322,6 @@ struct iommu_gpasid_bind_data {
> __u32 argsz;
> #define IOMMU_GPASID_BIND_VERSION_1 1
> __u32 version;
> -#define IOMMU_PASID_FORMAT_INTEL_VTD 1
> __u32 format;
> __u32 addr_width;
> #define IOMMU_SVA_GPASID_VAL (1 << 0) /* guest PASID valid */
>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Eric
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next prev parent reply other threads:[~2020-08-13 9:29 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 0:21 [PATCH v7 0/7] IOMMU user API enhancement Jacob Pan
2020-07-30 0:21 ` [PATCH v7 1/7] docs: IOMMU user API Jacob Pan
2020-08-12 16:38 ` Auger Eric
2020-08-17 22:07 ` Jacob Pan
2020-07-30 0:21 ` [PATCH v7 2/7] iommu/uapi: Add argsz for user filled data Jacob Pan
2020-08-12 16:59 ` Auger Eric
2020-08-17 22:48 ` Jacob Pan
2020-07-30 0:21 ` [PATCH v7 3/7] iommu/uapi: Introduce enum type for PASID data format Jacob Pan
2020-08-13 9:29 ` Auger Eric [this message]
2020-07-30 0:21 ` [PATCH v7 4/7] iommu/uapi: Use named union for user data Jacob Pan
2020-07-30 0:21 ` [PATCH v7 5/7] iommu/uapi: Rename uapi functions Jacob Pan
2020-08-13 8:58 ` Auger Eric
2020-08-17 23:16 ` Jacob Pan
2020-07-30 0:21 ` [PATCH v7 6/7] iommu/uapi: Handle data and argsz filled by users Jacob Pan
2020-08-13 9:11 ` Auger Eric
2020-08-13 9:25 ` Liu, Yi L
2020-08-13 9:30 ` Auger Eric
2020-08-13 9:38 ` Liu, Yi L
2020-08-13 10:03 ` Auger Eric
2020-07-30 0:21 ` [PATCH v7 7/7] iommu/vt-d: Check UAPI data processed by IOMMU core Jacob Pan
2020-08-13 9:19 ` Auger Eric
2020-08-31 17:52 ` Jacob Pan
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