From: Jason Gunthorpe <jgg@ziepe.ca>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "Daniel Vetter" <daniel.vetter@ffwll.ch>,
"DRI Development" <dri-devel@lists.freedesktop.org>,
LKML <linux-kernel@vger.kernel.org>,
"KVM list" <kvm@vger.kernel.org>, "Linux MM" <linux-mm@kvack.org>,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
"Linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
linux-s390 <linux-s390@vger.kernel.org>,
"Daniel Vetter" <daniel.vetter@intel.com>,
"Kees Cook" <keescook@chromium.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"John Hubbard" <jhubbard@nvidia.com>,
"Jérôme Glisse" <jglisse@redhat.com>, "Jan Kara" <jack@suse.cz>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Linux PCI" <linux-pci@vger.kernel.org>
Subject: Re: [PATCH 10/13] PCI: revoke mappings like devmem
Date: Thu, 8 Oct 2020 09:41:47 -0300 [thread overview]
Message-ID: <20201008124147.GD5177@ziepe.ca> (raw)
In-Reply-To: <CAPcyv4jA9fe40r_2SfrCtOaeE85V88TA3NNQZOmQMNj=MdsPyw@mail.gmail.com>
On Thu, Oct 08, 2020 at 12:49:54AM -0700, Dan Williams wrote:
> > This is what got me thinking maybe this needs to be a bit bigger
> > generic infrastructure - eg enter this scheme from fops mmap and
> > everything else is in mm/user_iomem.c
>
> It still requires every file that can map physical memory to have its
> ->open fop do
Common infrastructure would have to create a dummy struct file at mmap
time with the global inode and attach that to the VMA.
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@ziepe.ca>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-s390 <linux-s390@vger.kernel.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
"Jan Kara" <jack@suse.cz>, "Kees Cook" <keescook@chromium.org>,
"KVM list" <kvm@vger.kernel.org>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Linux PCI" <linux-pci@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"DRI Development" <dri-devel@lists.freedesktop.org>,
"Linux MM" <linux-mm@kvack.org>,
"Jérôme Glisse" <jglisse@redhat.com>,
"John Hubbard" <jhubbard@nvidia.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Daniel Vetter" <daniel.vetter@intel.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
"Linux-media@vger.kernel.org" <linux-media@vger.kernel.org>
Subject: Re: [PATCH 10/13] PCI: revoke mappings like devmem
Date: Thu, 8 Oct 2020 09:41:47 -0300 [thread overview]
Message-ID: <20201008124147.GD5177@ziepe.ca> (raw)
In-Reply-To: <CAPcyv4jA9fe40r_2SfrCtOaeE85V88TA3NNQZOmQMNj=MdsPyw@mail.gmail.com>
On Thu, Oct 08, 2020 at 12:49:54AM -0700, Dan Williams wrote:
> > This is what got me thinking maybe this needs to be a bit bigger
> > generic infrastructure - eg enter this scheme from fops mmap and
> > everything else is in mm/user_iomem.c
>
> It still requires every file that can map physical memory to have its
> ->open fop do
Common infrastructure would have to create a dummy struct file at mmap
time with the global inode and attach that to the VMA.
Jason
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@ziepe.ca>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-s390 <linux-s390@vger.kernel.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
"Jan Kara" <jack@suse.cz>, "Kees Cook" <keescook@chromium.org>,
"KVM list" <kvm@vger.kernel.org>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Linux PCI" <linux-pci@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"DRI Development" <dri-devel@lists.freedesktop.org>,
"Linux MM" <linux-mm@kvack.org>,
"Jérôme Glisse" <jglisse@redhat.com>,
"John Hubbard" <jhubbard@nvidia.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Daniel Vetter" <daniel.vetter@intel.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
"Linux-media@vger.kernel.org" <linux-media@vger.kernel.org>
Subject: Re: [PATCH 10/13] PCI: revoke mappings like devmem
Date: Thu, 8 Oct 2020 09:41:47 -0300 [thread overview]
Message-ID: <20201008124147.GD5177@ziepe.ca> (raw)
In-Reply-To: <CAPcyv4jA9fe40r_2SfrCtOaeE85V88TA3NNQZOmQMNj=MdsPyw@mail.gmail.com>
On Thu, Oct 08, 2020 at 12:49:54AM -0700, Dan Williams wrote:
> > This is what got me thinking maybe this needs to be a bit bigger
> > generic infrastructure - eg enter this scheme from fops mmap and
> > everything else is in mm/user_iomem.c
>
> It still requires every file that can map physical memory to have its
> ->open fop do
Common infrastructure would have to create a dummy struct file at mmap
time with the global inode and attach that to the VMA.
Jason
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-10-08 12:41 UTC|newest]
Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-07 16:44 [PATCH 00/13] follow_pfn and other iomap races Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 01/13] drm/exynos: Stop using frame_vector helpers Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 20:32 ` John Hubbard
2020-10-07 20:32 ` John Hubbard
2020-10-07 20:32 ` John Hubbard
2020-10-07 21:32 ` Daniel Vetter
2020-10-07 21:32 ` Daniel Vetter
2020-10-07 21:32 ` Daniel Vetter
2020-10-07 21:36 ` John Hubbard
2020-10-07 21:36 ` John Hubbard
2020-10-07 21:36 ` John Hubbard
2020-10-07 21:50 ` Daniel Vetter
2020-10-07 21:50 ` Daniel Vetter
2020-10-07 21:50 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 02/13] drm/exynos: Use FOLL_LONGTERM for g2d cmdlists Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 20:43 ` John Hubbard
2020-10-07 20:43 ` John Hubbard
2020-10-07 20:43 ` John Hubbard
2020-10-07 16:44 ` [PATCH 03/13] misc/habana: Stop using frame_vector helpers Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 20:38 ` John Hubbard
2020-10-07 20:38 ` John Hubbard
2020-10-07 20:38 ` John Hubbard
2020-10-07 16:44 ` [PATCH 04/13] misc/habana: Use FOLL_LONGTERM for userptr Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 20:46 ` John Hubbard
2020-10-07 20:46 ` John Hubbard
2020-10-07 20:46 ` John Hubbard
2020-10-07 16:44 ` [PATCH 05/13] mm/frame-vector: Use FOLL_LONGTERM Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:53 ` Jason Gunthorpe
2020-10-07 16:53 ` Jason Gunthorpe
2020-10-07 16:53 ` Jason Gunthorpe
2020-10-07 17:12 ` Daniel Vetter
2020-10-07 17:12 ` Daniel Vetter
2020-10-07 17:12 ` Daniel Vetter
2020-10-07 17:33 ` Jason Gunthorpe
2020-10-07 17:33 ` Jason Gunthorpe
2020-10-07 17:33 ` Jason Gunthorpe
2020-10-07 21:13 ` John Hubbard
2020-10-07 21:13 ` John Hubbard
2020-10-07 21:13 ` John Hubbard
2020-10-07 21:30 ` Daniel Vetter
2020-10-07 21:30 ` Daniel Vetter
2020-10-07 21:30 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 06/13] media: videobuf2: Move frame_vector into media subsystem Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 22:18 ` John Hubbard
2020-10-07 22:18 ` John Hubbard
2020-10-07 22:18 ` John Hubbard
2020-10-07 16:44 ` [PATCH 07/13] mm: close race in generic_access_phys Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 17:27 ` Jason Gunthorpe
2020-10-07 17:27 ` Jason Gunthorpe
2020-10-07 17:27 ` Jason Gunthorpe
2020-10-07 18:01 ` Daniel Vetter
2020-10-07 18:01 ` Daniel Vetter
2020-10-07 18:01 ` Daniel Vetter
2020-10-07 23:21 ` Jason Gunthorpe
2020-10-07 23:21 ` Jason Gunthorpe
2020-10-07 23:21 ` Jason Gunthorpe
2020-10-08 0:44 ` John Hubbard
2020-10-08 0:44 ` John Hubbard
2020-10-08 0:44 ` John Hubbard
2020-10-08 7:23 ` Daniel Vetter
2020-10-08 7:23 ` Daniel Vetter
2020-10-08 7:23 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 08/13] s390/pci: Remove races against pte updates Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-08 16:44 ` Gerald Schaefer
2020-10-08 16:44 ` Gerald Schaefer
2020-10-08 16:44 ` Gerald Schaefer
2020-10-08 17:16 ` Daniel Vetter
2020-10-08 17:16 ` Daniel Vetter
2020-10-08 17:16 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 09/13] PCI: obey iomem restrictions for procfs mmap Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 18:46 ` Bjorn Helgaas
2020-10-07 18:46 ` Bjorn Helgaas
2020-10-07 18:46 ` Bjorn Helgaas
2020-10-07 18:46 ` Bjorn Helgaas
2020-10-07 16:44 ` [PATCH 10/13] PCI: revoke mappings like devmem Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 18:41 ` Bjorn Helgaas
2020-10-07 18:41 ` Bjorn Helgaas
2020-10-07 18:41 ` Bjorn Helgaas
2020-10-07 19:24 ` Daniel Vetter
2020-10-07 19:24 ` Daniel Vetter
2020-10-07 19:24 ` Daniel Vetter
2020-10-07 19:33 ` Dan Williams
2020-10-07 19:33 ` Dan Williams
2020-10-07 19:33 ` Dan Williams
2020-10-07 19:47 ` Daniel Vetter
2020-10-07 19:47 ` Daniel Vetter
2020-10-07 19:47 ` Daniel Vetter
2020-10-07 22:23 ` Dan Williams
2020-10-07 22:23 ` Dan Williams
2020-10-07 22:23 ` Dan Williams
2020-10-07 22:29 ` Dan Williams
2020-10-07 22:29 ` Dan Williams
2020-10-07 22:29 ` Dan Williams
2020-10-08 8:09 ` Daniel Vetter
2020-10-08 8:09 ` Daniel Vetter
2020-10-08 8:09 ` Daniel Vetter
2020-10-07 23:24 ` Jason Gunthorpe
2020-10-07 23:24 ` Jason Gunthorpe
2020-10-07 23:24 ` Jason Gunthorpe
2020-10-08 7:31 ` Daniel Vetter
2020-10-08 7:31 ` Daniel Vetter
2020-10-08 7:31 ` Daniel Vetter
2020-10-08 7:49 ` Dan Williams
2020-10-08 7:49 ` Dan Williams
2020-10-08 7:49 ` Dan Williams
2020-10-08 8:13 ` Daniel Vetter
2020-10-08 8:13 ` Daniel Vetter
2020-10-08 8:13 ` Daniel Vetter
2020-10-08 8:35 ` Dan Williams
2020-10-08 8:35 ` Dan Williams
2020-10-08 8:35 ` Dan Williams
2020-10-08 12:41 ` Jason Gunthorpe [this message]
2020-10-08 12:41 ` Jason Gunthorpe
2020-10-08 12:41 ` Jason Gunthorpe
2020-10-07 16:44 ` [PATCH 11/13] mm: add unsafe_follow_pfn Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 17:36 ` Jason Gunthorpe
2020-10-07 17:36 ` Jason Gunthorpe
2020-10-07 17:36 ` Jason Gunthorpe
2020-10-07 18:10 ` Daniel Vetter
2020-10-07 18:10 ` Daniel Vetter
2020-10-07 18:10 ` Daniel Vetter
2020-10-07 19:00 ` Jason Gunthorpe
2020-10-07 19:00 ` Jason Gunthorpe
2020-10-07 19:00 ` Jason Gunthorpe
2020-10-07 19:38 ` Daniel Vetter
2020-10-07 19:38 ` Daniel Vetter
2020-10-07 19:38 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 12/13] media/videbuf1|2: Mark follow_pfn usage as unsafe Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` [PATCH 13/13] vfio/type1: Mark follow_pfn " Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 16:44 ` Daniel Vetter
2020-10-07 17:39 ` Jason Gunthorpe
2020-10-07 17:39 ` Jason Gunthorpe
2020-10-07 17:39 ` Jason Gunthorpe
2020-10-07 18:14 ` Daniel Vetter
2020-10-07 18:14 ` Daniel Vetter
2020-10-07 18:14 ` Daniel Vetter
2020-10-07 18:47 ` Jason Gunthorpe
2020-10-07 18:47 ` Jason Gunthorpe
2020-10-07 18:47 ` Jason Gunthorpe
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