WSL2-Linux-Kernel/arch/unicore32/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
..
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
asm-offsets.c unicore32: Remove signal translation and exec_domain 2015-04-12 21:03:28 +02:00
clock.c arch/unicore32/kernel/clock.c: add readl() and writel() for 'PM_' macros 2014-06-20 08:22:37 +08:00
debug-macro.S unicore32 additional architecture files: low-level lib: ocd debug 2011-03-17 09:19:12 +08:00
debug.S unicore32 additional architecture files: low-level lib: ocd debug 2011-03-17 09:19:12 +08:00
dma.c Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] 2012-03-28 18:30:03 +01:00
early_printk.c arch/unicore32/kernel/early_printk.c:setup_early_printk: missing initialization 2014-01-27 21:02:39 -08:00
elf.c unicore32 core architecture: generic elf and ksyms stuff 2011-03-17 09:19:05 +08:00
entry.S unicore32: switch to generic sigaltstack 2013-02-03 18:16:23 -05:00
fpu-ucf64.c signal/unicore32: Use send_sig_fault where appropriate 2018-09-27 21:59:44 +02:00
gpio.c unicore32: use the new LED disk activity trigger 2016-06-27 08:58:42 +02:00
head.S Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] 2012-03-28 18:30:03 +01:00
hibernate.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
hibernate_asm.S unicore32 additional architecture files: pm related files 2011-03-17 09:19:11 +08:00
irq.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
ksyms.c unicore32: get rid of zeroing and switch to RAW_COPY_USER 2017-03-28 18:24:04 -04:00
ksyms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
module.c mm: vmalloc: pass additional vm_flags to __vmalloc_node_range() 2015-02-13 21:21:42 -08:00
pci.c unicore32/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks 2017-08-03 16:29:34 -05:00
pm.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
process.c unicore32: do not use print_symbol() 2018-01-05 15:21:10 +01:00
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
puv3-core.c platform: Remove most references to platform_bus device 2014-07-23 19:09:03 -07:00
puv3-nb0916.c unicore32: nb0916: Use PWM lookup table 2015-11-10 13:06:44 +01:00
setup.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
setup.h reboot: unicore32: prepare reboot_mode for moving to generic kernel code 2013-07-09 10:33:29 -07:00
signal.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
sleep.S unicore32: modify io_p2v and io_v2p macros, and adjust PKUNITY_mmio_BASEs 2011-03-17 09:19:21 +08:00
stacktrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
sys.c unicore32: just use mmap_pgoff()... 2013-05-09 14:10:07 -04:00
time.c unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks 2017-04-14 13:11:22 -07:00
traps.c signal/unicore32: Generate siginfo in ucs32_notify_die 2018-09-27 22:11:28 +02:00
vmlinux.lds.S nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00