linux_dsm_epyc7002/arch
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
..
alpha Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
arc Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
arm Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
arm64 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
c6x Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
csky Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
h8300 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
hexagon Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
ia64 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
m68k Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
microblaze Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
mips Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
nds32 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
nios2 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
openrisc Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
parisc Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
powerpc Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
riscv Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
s390 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
sh Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
sparc Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
um Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
unicore32 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
x86 Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
xtensa Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
.gitignore
Kconfig New gcc plugin: stackleak 2018-11-01 11:46:27 -07:00