linux_old1/arch/xtensa/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
..
syscalls xtensa: add system call table generation support 2018-12-02 23:45:22 -08:00
.gitignore xtensa: tell git to ignore generated files 2013-06-05 10:14:19 -07:00
Makefile xtensa: implement jump_label support 2018-12-20 14:44:38 -08:00
align.S xtensa: clean up word alignment macros in assembly code 2017-12-10 14:48:53 -08:00
asm-offsets.c xtensa: drop unused field from the struct exc_table 2018-12-03 01:39:22 -08:00
coprocessor.S xtensa: simplify coprocessor.S 2018-12-04 14:08:23 -08:00
entry.S xtensa: call do_syscall_trace_{enter,leave} selectively 2018-12-17 13:48:21 -08:00
head.S xtensa: don't use l32r opcode directly 2018-12-05 12:53:07 -08:00
hw_breakpoint.c xtensa: clean up WSR*/RSR*/get_sr/set_sr 2018-12-04 14:08:11 -08:00
irq.c xtensa: drop variant IRQ support 2018-08-20 12:28:05 -07:00
jump_label.c xtensa: implement jump_label support 2018-12-20 14:44:38 -08:00
mcount.S xtensa: add static function tracer support 2013-07-08 01:18:57 -07:00
module.c xtensa: clean up custom-controlled debug output 2017-12-16 22:37:08 -08:00
mxhead.S xtensa: drop unused sections and remapped reset handlers 2015-11-03 17:19:39 +03:00
pci-dma.c dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
pci.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
perf_event.c cpu/hotplug: Cleanup state names 2016-12-25 10:47:44 +01:00
platform.c xtensa: cleanup ccount frequency tracking 2013-07-08 01:11:37 -07:00
process.c xtensa: enable CORE_DUMP_USE_REGSET 2018-12-17 13:48:22 -08:00
ptrace.c xtensa: implement syscall tracepoints 2018-12-17 13:50:25 -08:00
s32c1i_selftest.c xtensa: move S32C1I self-test to a separate file 2016-11-16 15:08:28 -08:00
setup.c xtensa: clean up WSR*/RSR*/get_sr/set_sr 2018-12-04 14:08:11 -08:00
signal.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
smp.c sched/headers: Move task->mm handling methods to <linux/sched/mm.h> 2017-03-03 01:43:28 +01:00
stacktrace.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
syscall.c xtensa: implement syscall tracepoints 2018-12-17 13:50:25 -08:00
time.c clocksource/drivers: Rename clocksource_probe to timer_probe 2017-06-14 11:59:16 +02:00
traps.c xtensa: clean up WSR*/RSR*/get_sr/set_sr 2018-12-04 14:08:11 -08:00
vectors.S xtensa: use call instead of callx in assembly code 2017-12-10 14:48:52 -08:00
vmlinux.lds.S Xtensa fixes and cleanups for v4.20: 2018-11-01 14:32:43 -07:00
xtensa_ksyms.c xtensa: use generic strncpy_from_user with KASAN 2017-12-17 15:34:57 -08:00