linux/arch/powerpc/platforms
Linus Torvalds 96d4f267e4 Remove 'type' argument from access_ok() function
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-03 18:57:57 -08:00
..
4xx powerpc/4xx: Delete an unnecessary return statement in two functions 2018-12-21 11:32:49 +11:00
8xx powerpc updates for 4.20 2018-10-26 14:36:21 -07:00
40x PCI: consolidate PCI config entry in drivers/pci 2018-11-23 11:45:34 +09:00
44x Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
52xx Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
82xx powerpc/kconfig: remove CONFIG_6xx 2018-11-26 22:33:37 +11:00
83xx Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
85xx Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
86xx Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
512x Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
amigaone Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
cell Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
chrp Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
embedded6xx Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
maple Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
pasemi Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
powermac Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
powernv Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
ps3 PCI: consolidate PCI config entry in drivers/pci 2018-11-23 11:45:34 +09:00
pseries Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
fsl_uli1575.c of/irq: Refactor interrupt-map parsing 2013-10-24 11:43:04 +01:00
Kconfig Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
Kconfig.cputype Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
Makefile powerpc: Add -Werror at arch/powerpc level 2018-10-19 00:56:17 +11:00