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Chris Wilson 0eb0feb9ae drm/i915/gem: Pull phys pread/pwrite implementations to the backend 
Move the specialised interactions with the physical GEM object from the
pread/pwrite ioctl handler into the phys backend.

Currently, if one is able to exhaust the entire aperture and then try to
pwrite into an object not backed by struct page, we accidentally invoked
the phys pwrite handler on a non-phys object; calamitous.

Fixes: c6790dc223 ("drm/i915: Wean off drm_pci_alloc/drm_pci_free")
Testcase: igt/gem_pwrite/exhaustion
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20201105154934.16022-2-chris@chris-wilson.co.uk
(cherry picked from commit 852e1b3644)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2020-11-12 19:47:30 -05:00
arch
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Documentation Driver core documentation fixes for 5.10-rc3 2020-11-08 11:30:25 -08:00
drivers drm/i915/gem: Pull phys pread/pwrite implementations to the backend 2020-11-12 19:47:30 -05:00
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kernel fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent 2020-11-08 11:18:39 -08:00
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Makefile Linux 5.10-rc3 2020-11-08 16:10:16 -08:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.