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090597b4a9
Arnd Bergmann says:
====================
remove compat_alloc_user_space()
This is the fifth version of my series, now spanning four patches
instead of two, with a new approach for handling struct ifreq
compatibility after I realized that my earlier approach introduces
additional problems.
The idea here is to always push down the compat conversion
deeper into the call stack: rather than pretending to be
native mode with a modified copy of the original data on
the user space stack, have the code that actually works on
the data understand the difference between native and compat
versions.
I have spent a long time looking at all drivers that implement
an ndo_do_ioctl callback to verify that my assumptions are
correct. This has led to a series of ~30 additional patches
that I am not including here but will post separately, fixing
a number of bugs in SIOCDEVPRIVATE ioctls, removing dead
code, and splitting ndo_do_ioctl into multiple new ndo callbacks
for private and ethernet specific commands.
Arnd
Link: https://lore.kernel.org/netdev/20201124151828.169152-1-arnd@kernel.org/
Changes in v6:
- Split out and expand linux/compat.h rework
- Split ifconf change into two patches
- Rebase on latest net-next/master
Changes in v5:
- Rebase to v5.14-rc2
- Fix a few build issues
Changes in v4:
- build fix without CONFIG_INET
- build fix without CONFIG_COMPAT
- style fixes pointed out by hch
Changes in v3:
- complete rewrite of the series
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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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.