linux/arch/openrisc/kernel
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
..
.gitignore openrisc: Add .gitignore 2017-02-25 04:14:36 +09:00
asm-offsets.c openrisc: use kbuild.h instead of defining macros in asm-offset.c 2012-10-25 15:54:33 +02:00
dma.c dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
entry.S openrisc: Fix broken paths to arch/or32 2018-12-20 00:04:39 +09:00
head.S openrisc: Fix broken paths to arch/or32 2018-12-20 00:04:39 +09:00
irq.c openrisc: Use the new GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:09 +02:00
Makefile OpenRISC updates for v4.15 2017-11-13 12:12:00 -08:00
module.c openrisc: Refactor 16-bit constant relocation 2013-11-05 16:27:55 +01:00
or32_ksyms.c openrisc: Switch to use export.h instead of module.h 2017-05-15 22:02:33 +09:00
process.c OpenRISC fixes for 4.13 2017-07-07 13:58:49 -07:00
prom.c openrisc: remove unnecessary prom.c includes 2013-10-09 11:39:01 -05:00
ptrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
setup.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
signal.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
smp.c openrisc: fix possible deadlock scenario during timer sync 2017-11-03 14:01:17 +09:00
stacktrace.c openrisc: support framepointers and STACKTRACE_SUPPORT 2017-11-03 14:01:15 +09:00
sync-timer.c openrisc: add tick timer multi-core sync logic 2017-11-03 14:01:16 +09:00
sys_call_table.c OpenRISC: System calls 2011-07-22 18:46:34 +02:00
time.c openrisc: add tick timer multi-core sync logic 2017-11-03 14:01:16 +09:00
traps.c openrisc: entry: Fix delay slot exception detection 2018-07-01 16:48:24 +09:00
unwinder.c openrisc: support framepointers and STACKTRACE_SUPPORT 2017-11-03 14:01:15 +09:00
vmlinux.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmlinux.lds.S openrisc: Make THREAD_SIZE available to vmlinux.lds 2018-01-09 23:21:02 +00:00