From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Tadeusz Struk <tadeusz.struk-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Dennis Dalessandro
<dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Dean Luick <dean.luick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Ira Weiny <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v2 03/12] IB/hfi1: Fix an Oops on pci device force remove
Date: Tue, 25 Oct 2016 12:03:45 -0600 [thread overview]
Message-ID: <20161025180345.GA16794@obsidianresearch.com> (raw)
In-Reply-To: <7f4cbe0c-0c83-48b2-9901-4a5e27b306b4-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
On Tue, Oct 25, 2016 at 10:38:55AM -0700, Tadeusz Struk wrote:
> On 10/25/2016 09:48 AM, Jason Gunthorpe wrote:
> > nit: This isn't similar to uverbs or other IB core interfaces - they
> > all allow unbind while the FD remains open, this forces the FD to
> > become closed - which means hot plug will not be supported by hfi1.
> >
>
> That's correct, the reason, as I said before, is that PIO processes
> don't go via FD, but talk directly to MMIO PCI regions.
Most of the IB drivers do this - Mellanox implemented a forced
remapping of the user space VMA on unplug to deal with it, you can use
that technique in HFI1 too.
Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2016-10-25 18:03 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-17 11:19 [PATCH 00/12] For 4.9 rc Dennis Dalessandro
[not found] ` <20161017103326.7934.21558.stgit-9QXIwq+3FY+1XWohqUldA0EOCMrvLtNR@public.gmane.org>
2016-10-17 11:19 ` [PATCH 01/12] IB/rdmvat: Organize hot path calldowns into a single cacheline Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 02/12] IB/hfi1: Optimize pio cachelines Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 03/12] IB/hfi1: Fix an Oops on pci device force remove Dennis Dalessandro
[not found] ` <20161017111918.7934.72325.stgit-9QXIwq+3FY+1XWohqUldA0EOCMrvLtNR@public.gmane.org>
2016-10-17 16:07 ` Jason Gunthorpe
[not found] ` <20161017160731.GA5679-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-10-19 18:01 ` Tadeusz Struk
2016-10-25 15:57 ` [PATCH v2 " Dennis Dalessandro
[not found] ` <20161025155754.4950.23412.stgit-9QXIwq+3FY+1XWohqUldA0EOCMrvLtNR@public.gmane.org>
2016-10-25 16:48 ` Jason Gunthorpe
[not found] ` <20161025164851.GA28096-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-10-25 17:38 ` Tadeusz Struk
[not found] ` <7f4cbe0c-0c83-48b2-9901-4a5e27b306b4-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-10-25 18:03 ` Jason Gunthorpe [this message]
2016-10-17 11:19 ` [PATCH 04/12] IB/hfi1: Return ENODEV for unsupported PCI device ids Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 05/12] IB/hfi1: Unify access to GUID entries Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 06/12] IB/hfi1: Optimize devdata cachelines Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 07/12] IB/hfi1: Fix a potential memory leak in hfi1_create_ctxts() Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 08/12] IB/hfi1: Add active channel and backplane support for integrated devices Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 09/12] IB/hfi1: Remove leftover snoop references Dennis Dalessandro
2016-10-17 11:19 ` [PATCH 10/12] IB/hfi1: Clean up unused argument Dennis Dalessandro
2016-10-17 11:20 ` [PATCH 11/12] IB/hfi1: Delete unused lock Dennis Dalessandro
2016-10-17 11:20 ` [PATCH 12/12] IB/hfi1: Fix rnr_timer addition Dennis Dalessandro
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=20161025180345.GA16794@obsidianresearch.com \
--to=jgunthorpe-epgobjl8dl3ta4ec/59zmfatqe2ktcn/@public.gmane.org \
--cc=dean.luick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=tadeusz.struk-ral2JQCrhuEAvxtiuMwx3w@public.gmane.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.