iommu.lists.linux-foundation.org archive mirror
 help / color / mirror / Atom feed
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
	"Alex Williamson \(alex.williamson@redhat.com\)"
	<alex.williamson@redhat.com>, "Raj, Ashok" <ashok.raj@intel.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Robin Murphy <robin.murphy@arm.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Kirti Wankhede <kwankhede@nvidia.com>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	David Gibson <david@gibson.dropbear.id.au>,
	"Jiang, Dave" <dave.jiang@intel.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Jason Wang <jasowang@redhat.com>
Subject: Re: [RFC] /dev/ioasid uAPI proposal
Date: Wed, 2 Jun 2021 20:27:00 -0300	[thread overview]
Message-ID: <20210602232700.GM1002214@nvidia.com> (raw)
In-Reply-To: <MWHPR11MB1886172080807517E92A8EF68C3D9@MWHPR11MB1886.namprd11.prod.outlook.com>

On Wed, Jun 02, 2021 at 01:25:00AM +0000, Tian, Kevin wrote:

> OK, this implies that if one user inadvertently creates intended parent/
> child via different fd's then the operation will simply fail.

Remember the number space to refer to the ioasid's inside the FD is
local to that instance of the FD. Each FD should have its own xarray

You can't actually accidently refer to an IOASID in FD A from FD B
because the xarray lookup in FD B will not return 'IOASID A'.

Jason
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  reply	other threads:[~2021-06-02 23:27 UTC|newest]

Thread overview: 260+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27  7:58 [RFC] /dev/ioasid uAPI proposal Tian, Kevin
2021-05-28  2:24 ` Jason Wang
2021-05-28 20:25   ` Jason Gunthorpe
2021-05-31  8:41   ` Liu Yi L
2021-06-01  2:36     ` Jason Wang
2021-06-01  3:31       ` Liu Yi L
2021-06-01  5:08         ` Jason Wang
2021-06-01  5:23           ` Lu Baolu
2021-06-01  5:29             ` Jason Wang
2021-06-01  5:42               ` Tian, Kevin
2021-06-01  6:07                 ` Jason Wang
2021-06-01  6:16                   ` Tian, Kevin
2021-06-01  8:47                     ` Jason Wang
2021-06-01 17:31                       ` Jason Gunthorpe
2021-06-02  8:54                         ` Jason Wang
2021-06-02 17:21                           ` Jason Gunthorpe
2021-06-07 13:30                             ` Enrico Weigelt, metux IT consult
2021-06-07 18:01                               ` Jason Gunthorpe
2021-06-08 10:45                                 ` Enrico Weigelt, metux IT consult
2021-06-10  2:16                                   ` Jason Wang
2021-06-08  1:10                             ` Jason Wang
2021-06-08 13:20                               ` Jason Gunthorpe
2021-06-10  2:00                                 ` Jason Wang
2021-06-10  4:03                                   ` Jason Wang
2021-06-10 11:47                                   ` Jason Gunthorpe
2021-06-11  5:43                                     ` Jason Wang
2021-06-01 17:29                   ` Jason Gunthorpe
2021-06-02  8:58                     ` Jason Wang
2021-06-01  4:27       ` Shenming Lu
2021-06-01  5:10         ` Jason Wang
2021-05-28 16:23 ` Jean-Philippe Brucker
2021-05-28 20:16   ` Jason Gunthorpe
2021-06-01  7:50   ` Tian, Kevin
2021-05-28 17:35 ` Jason Gunthorpe
2021-06-01  8:10   ` Tian, Kevin
2021-06-01 17:42     ` Jason Gunthorpe
2021-06-02  1:33       ` Tian, Kevin
2021-06-02 16:09         ` Jason Gunthorpe
2021-06-03  1:29           ` Tian, Kevin
2021-06-03  5:09             ` David Gibson
2021-06-03  6:49               ` Tian, Kevin
2021-06-03 11:47                 ` Jason Gunthorpe
2021-06-04  2:15                   ` Tian, Kevin
2021-06-08  0:49                 ` David Gibson
2021-06-09  2:52                   ` Tian, Kevin
2021-06-02  6:32   ` David Gibson
2021-06-02 16:16     ` Jason Gunthorpe
2021-06-03  2:11       ` Tian, Kevin
2021-06-03  5:13       ` David Gibson
2021-06-03 11:52         ` Jason Gunthorpe
2021-06-08  0:53           ` David Gibson
2021-06-08 19:04             ` Jason Gunthorpe
2021-06-17  2:42               ` David Gibson
2021-05-28 19:58 ` Jason Gunthorpe
2021-06-01  8:38   ` Tian, Kevin
2021-06-01 17:56     ` Jason Gunthorpe
2021-06-02  2:00       ` Tian, Kevin
2021-06-02  6:57       ` David Gibson
2021-06-02 16:37         ` Jason Gunthorpe
2021-06-03  5:23           ` David Gibson
2021-06-03 12:28             ` Jason Gunthorpe
2021-06-08  6:04               ` David Gibson
2021-06-08 19:23                 ` Jason Gunthorpe
2021-06-02  6:48   ` David Gibson
2021-06-02 16:58     ` Jason Gunthorpe
2021-06-03  2:49       ` Tian, Kevin
2021-06-03  5:48         ` David Gibson
2021-06-03  5:45       ` David Gibson
2021-06-03 12:11         ` Jason Gunthorpe
2021-06-04  6:08           ` Tian, Kevin
2021-06-04 12:33             ` Jason Gunthorpe
2021-06-04 23:20               ` Tian, Kevin
2021-06-08  6:13           ` David Gibson
2021-06-04 10:24         ` Jean-Philippe Brucker
2021-06-04 12:05           ` Jason Gunthorpe
2021-06-04 17:27             ` Jacob Pan
2021-06-04 17:40               ` Jason Gunthorpe
2021-06-08  6:31           ` David Gibson
2021-06-10 16:37             ` Jean-Philippe Brucker
2021-06-17  3:00               ` David Gibson
2021-06-18 17:03                 ` Jean-Philippe Brucker
2021-06-18 18:30                   ` Jason Gunthorpe
2021-06-23  8:19                     ` Tian, Kevin
2021-06-23  7:57                   ` Tian, Kevin
2021-06-24  3:49                   ` David Gibson
2021-05-28 20:03 ` Jason Gunthorpe
2021-06-01  7:01   ` Tian, Kevin
2021-06-01 20:28     ` Jason Gunthorpe
2021-06-02  1:25       ` Tian, Kevin
2021-06-02 23:27         ` Jason Gunthorpe [this message]
2021-06-04  8:17         ` Jean-Philippe Brucker
2021-06-04  8:43           ` Tian, Kevin
2021-06-02  8:52       ` Jason Wang
2021-06-02 16:07         ` Jason Gunthorpe
2021-06-01 22:22     ` Alex Williamson
2021-06-02  2:20       ` Tian, Kevin
2021-06-02 16:01         ` Jason Gunthorpe
2021-06-02 17:11           ` Alex Williamson
2021-06-02 17:35             ` Jason Gunthorpe
2021-06-02 18:01               ` Alex Williamson
2021-06-02 18:09                 ` Jason Gunthorpe
2021-06-02 19:00                   ` Alex Williamson
2021-06-02 19:54                     ` Jason Gunthorpe
2021-06-02 20:37                       ` Alex Williamson
2021-06-02 22:45                         ` Jason Gunthorpe
2021-06-03  2:50                           ` Alex Williamson
2021-06-03  3:22                             ` Tian, Kevin
2021-06-03  4:14                               ` Alex Williamson
2021-06-03  5:18                                 ` Tian, Kevin
2021-06-03 12:40                               ` Jason Gunthorpe
2021-06-03 20:41                                 ` Alex Williamson
2021-06-04  9:19                                   ` Tian, Kevin
2021-06-04 15:37                                     ` Alex Williamson
2021-06-04 12:13                                   ` Jason Gunthorpe
2021-06-04 21:45                                     ` Alex Williamson
2021-06-04  7:33                                 ` Tian, Kevin
2021-06-03 12:34                             ` Jason Gunthorpe
2021-06-03 20:01                               ` Alex Williamson
2021-06-03 20:10                                 ` Jason Gunthorpe
2021-06-03 21:44                                   ` Alex Williamson
2021-06-04  8:38                                     ` Tian, Kevin
2021-06-04 12:28                                       ` Jason Gunthorpe
2021-06-04 15:26                                         ` Alex Williamson
2021-06-04 15:40                                           ` Paolo Bonzini
2021-06-04 15:50                                             ` Jason Gunthorpe
2021-06-04 15:57                                               ` Paolo Bonzini
2021-06-04 16:03                                                 ` Jason Gunthorpe
2021-06-04 16:10                                                   ` Paolo Bonzini
2021-06-04 17:22                                                     ` Jason Gunthorpe
2021-06-04 21:29                                                       ` Alex Williamson
2021-06-04 23:01                                                         ` Jason Gunthorpe
2021-06-07 15:41                                                           ` Alex Williamson
2021-06-07 18:18                                                             ` Jason Gunthorpe
2021-06-07 18:59                                                               ` Alex Williamson
2021-06-07 19:08                                                                 ` Jason Gunthorpe
2021-06-07 19:41                                                                   ` Alex Williamson
2021-06-07 23:03                                                                     ` Jason Gunthorpe
2021-06-08  0:30                                                                       ` Alex Williamson
2021-06-08  1:20                                                                     ` Jason Wang
2021-06-30  6:53                                                                       ` Christoph Hellwig
2021-06-30  6:49                                                                   ` Christoph Hellwig
2021-06-07  3:25                                                         ` Tian, Kevin
2021-06-07  6:51                                                           ` Paolo Bonzini
2021-06-07 18:01                                                             ` Jason Gunthorpe
2021-06-30  6:56                                                           ` Christoph Hellwig
2021-06-05  6:22                                                       ` Paolo Bonzini
2021-06-07  3:50                                                         ` Tian, Kevin
2021-06-07 17:59                                                         ` Jason Gunthorpe
2021-06-08  7:56                                                           ` Paolo Bonzini
2021-06-08 13:15                                                             ` Jason Gunthorpe
2021-06-08 13:44                                                               ` Paolo Bonzini
2021-06-08 18:47                                                                 ` Alex Williamson
2021-06-08 19:00                                                                   ` Jason Gunthorpe
2021-06-09  8:51                                                                     ` Enrico Weigelt, metux IT consult
2021-06-09  9:11                                                                       ` Paolo Bonzini
2021-06-09 11:54                                                                         ` Jason Gunthorpe
2021-06-09 14:31                                                                           ` Alex Williamson
2021-06-09 14:45                                                                             ` Jason Gunthorpe
2021-06-09 15:20                                                                               ` Paolo Bonzini
2021-10-27  6:18                                                                                 ` Tian, Kevin
2021-10-27 10:32                                                                                   ` Paolo Bonzini
2021-10-28  1:50                                                                                     ` Tian, Kevin
2021-06-09  2:49                                                                   ` Tian, Kevin
2021-06-09 11:57                                                                     ` Jason Gunthorpe
2021-06-09 12:46                                                                       ` Paolo Bonzini
2021-06-09 12:47                                                                         ` Jason Gunthorpe
2021-06-09 13:24                                                                           ` Paolo Bonzini
2021-06-09 14:32                                                                             ` Jason Gunthorpe
2021-06-30  7:01                                                                           ` Christoph Hellwig
2021-06-09 18:09                                                                     ` Alex Williamson
2021-06-03  2:52                         ` Jason Wang
2021-06-03 13:09                           ` Jason Gunthorpe
2021-06-04  1:11                             ` Jason Wang
2021-06-04 11:58                               ` Jason Gunthorpe
2021-06-07  3:18                                 ` Jason Wang
2021-06-07 14:14                                   ` Jason Gunthorpe
2021-06-08  1:00                                     ` Jason Wang
2021-06-08  8:54                                       ` Enrico Weigelt, metux IT consult
2021-06-08 12:52                                         ` Jason Gunthorpe
2021-06-30  7:07                                     ` Christoph Hellwig
2021-06-30  7:05                                 ` Christoph Hellwig
2021-06-08  2:37       ` David Gibson
2021-06-08 13:17         ` Jason Gunthorpe
2021-06-17  3:47           ` David Gibson
2021-06-23  7:59             ` Tian, Kevin
2021-06-24  3:53               ` David Gibson
2021-05-28 23:36 ` Jason Gunthorpe
2021-05-31 11:31   ` Liu Yi L
2021-05-31 18:09     ` Jason Gunthorpe
2021-06-01  3:08       ` Lu Baolu
2021-06-01 17:24         ` Jason Gunthorpe
2021-06-01  1:25     ` Lu Baolu
2021-06-01 11:09   ` Lu Baolu
2021-06-01 17:26     ` Jason Gunthorpe
2021-06-02  4:01       ` Lu Baolu
2021-06-02 23:23         ` Jason Gunthorpe
2021-06-03  5:49           ` Lu Baolu
2021-06-03  5:54     ` David Gibson
2021-06-03  6:50       ` Lu Baolu
2021-06-03 12:56         ` Jason Gunthorpe
2021-06-02  7:22   ` David Gibson
2021-06-03  6:39   ` Tian, Kevin
2021-06-03 13:05     ` Jason Gunthorpe
2021-06-04  6:37       ` Tian, Kevin
2021-06-04 12:09         ` Jason Gunthorpe
2021-06-04 23:10           ` Tian, Kevin
2021-06-07 17:54             ` Jason Gunthorpe
2021-06-15  8:59       ` Tian, Kevin
2021-06-15 15:06         ` Jason Gunthorpe
2021-06-15 22:59           ` Tian, Kevin
2021-06-15 23:02             ` Jason Gunthorpe
2021-06-15 23:09               ` Tian, Kevin
2021-06-15 23:40                 ` Jason Gunthorpe
2021-06-15 23:56                   ` Tian, Kevin
2021-06-15 23:59                     ` Jason Gunthorpe
2021-06-16  0:02                       ` Tian, Kevin
2021-05-31 17:37 ` Parav Pandit
2021-05-31 18:12   ` Jason Gunthorpe
2021-06-01 12:04     ` Parav Pandit
2021-06-01 17:36       ` Jason Gunthorpe
2021-06-02  8:38   ` Enrico Weigelt, metux IT consult
2021-06-02 12:41     ` Parav Pandit
2021-06-01  4:31 ` Shenming Lu
2021-06-01  5:10   ` Lu Baolu
2021-06-01  7:15     ` Shenming Lu
2021-06-01 12:30       ` Lu Baolu
2021-06-01 13:10         ` Shenming Lu
2021-06-01 17:33         ` Jason Gunthorpe
2021-06-02  4:50           ` Shenming Lu
2021-06-03 18:19             ` Jacob Pan
2021-06-04  1:30               ` Jason Wang
2021-06-04 16:22                 ` Jacob Pan
2021-06-04 16:22                   ` Jason Gunthorpe
2021-06-04 18:05                     ` Jacob Pan
2021-06-04  2:03               ` Shenming Lu
2021-06-07 12:19                 ` Liu, Yi L
2021-06-08  1:09                   ` Shenming Lu
2021-06-01 17:30 ` Parav Pandit
2021-06-03 20:58   ` Jacob Pan
2021-06-08  6:30     ` Parav Pandit
2021-06-02  6:15 ` David Gibson
2021-06-02 17:19   ` Jason Gunthorpe
2021-06-03  3:02     ` Tian, Kevin
2021-06-03  6:26     ` David Gibson
2021-06-03 12:46       ` Jason Gunthorpe
2021-06-04  6:27         ` Tian, Kevin
2021-06-03  7:17   ` Tian, Kevin
2021-06-03 12:49     ` Jason Gunthorpe
2021-06-08  5:49     ` David Gibson
2021-06-03  8:12   ` Tian, Kevin
2021-06-17  4:07     ` David Gibson
2021-06-23  8:00       ` Tian, Kevin
2021-06-24  3:55         ` David Gibson
2021-06-02  8:56 ` Enrico Weigelt, metux IT consult
2021-06-02 17:24   ` Jason Gunthorpe
2021-06-04 10:44     ` Enrico Weigelt, metux IT consult
2021-06-04 12:30       ` Jason Gunthorpe
2021-06-08  1:15         ` David Gibson
2021-06-08 10:43         ` Enrico Weigelt, metux IT consult
2021-06-08 13:11           ` Jason Gunthorpe

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=20210602232700.GM1002214@nvidia.com \
    --to=jgg@nvidia.com \
    --cc=alex.williamson@redhat.com \
    --cc=ashok.raj@intel.com \
    --cc=corbet@lwn.net \
    --cc=dave.jiang@intel.com \
    --cc=david@gibson.dropbear.id.au \
    --cc=dwmw2@infradead.org \
    --cc=iommu@lists.linux-foundation.org \
    --cc=jasowang@redhat.com \
    --cc=jean-philippe@linaro.org \
    --cc=kevin.tian@intel.com \
    --cc=kvm@vger.kernel.org \
    --cc=kwankhede@nvidia.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robin.murphy@arm.com \
    /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).