From: Jason Gunthorpe <jgg@nvidia.com>
To: Steve Sistare <steven.sistare@oracle.com>
Cc: iommu@lists.linux.dev, Kevin Tian <kevin.tian@intel.com>,
Nicolin Chen <nicolinc@nvidia.com>
Subject: Re: [PATCH V2 6/9] iommufd: file mappings for mdev
Date: Tue, 1 Oct 2024 17:09:59 -0300 [thread overview]
Message-ID: <20241001200959.GN1365916@nvidia.com> (raw)
In-Reply-To: <1727190338-385692-7-git-send-email-steven.sistare@oracle.com>
On Tue, Sep 24, 2024 at 08:05:35AM -0700, Steve Sistare wrote:
> Support file mappings for mediated devices, aka mdevs. Access is initiated
> by the vfio_pin_pages and vfio_dma_rw kernel interfaces.
>
> Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
> ---
> drivers/iommu/iommufd/pages.c | 22 +++++++++++++++-------
> 1 file changed, 15 insertions(+), 7 deletions(-)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
> @@ -1884,6 +1884,9 @@ static int iopt_pages_rw_page(struct iopt_pages *pages, unsigned long index,
> struct page *page = NULL;
> int rc;
>
> + if (WARN_ON(pages->type != IOPT_ADDRESS_USER))
> + return -EINVAL;
You can can probably wrap this with
if (IS_ENABLED(CONFIG_IOMMUFD_TEST))
since it is supposed to be fast path
Jason
next prev parent reply other threads:[~2024-10-01 20:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-24 15:05 [PATCH V2 0/9] iommu_ioas_map_file Steve Sistare
2024-09-24 15:05 ` [PATCH V2 1/9] iommufd: rename uptr in iopt_alloc_iova Steve Sistare
2024-09-27 15:59 ` Jason Gunthorpe
2024-09-24 15:05 ` [PATCH V2 2/9] iommufd: generalize iopt_pages address Steve Sistare
2024-09-24 20:31 ` Nicolin Chen
2024-09-25 22:43 ` Jason Gunthorpe
2024-09-25 23:04 ` Nicolin Chen
2024-09-26 14:48 ` Jason Gunthorpe
2024-09-26 15:48 ` Steven Sistare
2024-10-01 19:54 ` Jason Gunthorpe
2024-09-24 15:05 ` [PATCH V2 3/9] iommufd: pfn reader for file mappings Steve Sistare
2024-09-24 20:53 ` Nicolin Chen
2024-09-26 15:59 ` Steven Sistare
2024-09-25 1:32 ` kernel test robot
2024-09-25 1:55 ` kernel test robot
2024-09-26 14:10 ` Steven Sistare
2024-09-24 15:05 ` [PATCH V2 4/9] iommufd: IOMMU_IOAS_MAP_FILE interface Steve Sistare
2024-10-01 19:58 ` Jason Gunthorpe
2024-09-24 15:05 ` [PATCH V2 5/9] iommufd: IOMMU_IOAS_MAP_FILE implementation Steve Sistare
2024-09-24 21:08 ` Nicolin Chen
2024-09-26 15:50 ` Steven Sistare
2024-10-01 20:05 ` Jason Gunthorpe
2024-10-02 17:26 ` Steven Sistare
2024-09-24 15:05 ` [PATCH V2 6/9] iommufd: file mappings for mdev Steve Sistare
2024-10-01 20:09 ` Jason Gunthorpe [this message]
2024-10-02 17:26 ` Steven Sistare
2024-09-24 15:05 ` [PATCH V2 7/9] iommufd: pfn reader local variables Steve Sistare
2024-10-02 17:29 ` Steven Sistare
2024-10-04 12:16 ` Jason Gunthorpe
2024-09-24 15:05 ` [PATCH V2 8/9] iommufd: optimize file mapping Steve Sistare
2024-10-01 21:03 ` Jason Gunthorpe
2024-10-02 17:26 ` Steven Sistare
2024-10-02 17:29 ` Jason Gunthorpe
2024-10-02 17:51 ` Steven Sistare
2024-09-24 15:05 ` [PATCH V2 9/9] iommufd: map file selftest Steve Sistare
2024-10-01 21:05 ` Jason Gunthorpe
2024-10-02 17:26 ` Steven Sistare
2024-10-02 17:29 ` Jason Gunthorpe
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