From: Jason Gunthorpe <jgg@ziepe.ca>
To: Jianxin Xiong <jianxin.xiong@intel.com>
Cc: linux-rdma@vger.kernel.org, dri-devel@lists.freedesktop.org,
Doug Ledford <dledford@redhat.com>,
Leon Romanovsky <leon@kernel.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Christian Koenig <christian.koenig@amd.com>,
Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [PATCH v5 1/5] RDMA/umem: Support importing dma-buf as user memory region
Date: Fri, 16 Oct 2020 15:59:59 -0300 [thread overview]
Message-ID: <20201016185959.GC37159@ziepe.ca> (raw)
In-Reply-To: <1602799365-138199-1-git-send-email-jianxin.xiong@intel.com>
On Thu, Oct 15, 2020 at 03:02:45PM -0700, Jianxin Xiong wrote:
> +static void ib_umem_dmabuf_invalidate_cb(struct dma_buf_attachment *attach)
> +{
> + struct ib_umem_dmabuf *umem_dmabuf = attach->importer_priv;
> +
> + dma_resv_assert_held(umem_dmabuf->attach->dmabuf->resv);
> +
> + ib_umem_dmabuf_unmap_pages(&umem_dmabuf->umem, true);
> + queue_work(ib_wq, &umem_dmabuf->work);
Do we really want to queue remapping or should it wait until there is
a page fault?
What do GPUs do?
Jason
next prev parent reply other threads:[~2020-10-16 19:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 22:02 [PATCH v5 1/5] RDMA/umem: Support importing dma-buf as user memory region Jianxin Xiong
2020-10-16 18:59 ` Jason Gunthorpe [this message]
2020-10-16 20:16 ` Xiong, Jianxin
2020-10-18 18:05 ` Daniel Vetter
2020-10-17 0:28 ` Jason Gunthorpe
2020-10-17 0:57 ` Xiong, Jianxin
2020-10-17 1:04 ` Jason Gunthorpe
2020-10-19 5:28 ` Xiong, Jianxin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201016185959.GC37159@ziepe.ca \
--to=jgg@ziepe.ca \
--cc=christian.koenig@amd.com \
--cc=daniel.vetter@intel.com \
--cc=dledford@redhat.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=jianxin.xiong@intel.com \
--cc=leon@kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).