# git rev-parse -q --verify 96d4f267e40f9509e8a66e2b39e8b95655617693^{commit}
96d4f267e40f9509e8a66e2b39e8b95655617693
already have revision, skipping fetch
# git checkout -q -f -B kisskb 96d4f267e40f9509e8a66e2b39e8b95655617693
# git clean -qxdf
# < git log -1
# commit 96d4f267e40f9509e8a66e2b39e8b95655617693
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu Jan 3 18:57:57 2019 -0800
# 
#     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>
# < /opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-gcc --version
# < /opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-ld --version
# < git log --format=%s --max-count=1 96d4f267e40f9509e8a66e2b39e8b95655617693
# < make -s -j 8 ARCH=mips O=/kisskb/build/linus_mips-defconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  defconfig
# make -s -j 8 ARCH=mips O=/kisskb/build/linus_mips-defconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  
/kisskb/src/arch/mips/boot/dts/xilfpga/nexys4ddr.dts:109.16-112.8: Warning (i2c_bus_reg): /i2c@10A00000/ad7420@4B: I2C bus unit address format error, expected "4b"
FIT description: Linux 4.20.0-g96d4f267e40f
Created:         Fri Jan  4 17:16:00 2019
 Image 0 (kernel@0)
  Description:  Linux 4.20.0-g96d4f267e40f
  Created:      Fri Jan  4 17:16:00 2019
  Type:         Kernel Image
  Compression:  gzip compressed
  Data Size:    4499555 Bytes = 4394.10 KiB = 4.29 MiB
  Architecture: MIPS
  OS:           Linux
  Load Address: 0x80100000
  Entry Point:  0x80853d10
  Hash algo:    sha1
  Hash value:   48cb6969cb18d96242f569e3fa1ad33bcb4c73e3
 Image 1 (fdt@boston)
  Description:  img,boston Device Tree
  Created:      Fri Jan  4 17:16:00 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    3793 Bytes = 3.70 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   4799f50d688573234da6e9d7701234d394759ef4
 Image 2 (fdt@ni169445)
  Description:  NI 169445 device tree
  Created:      Fri Jan  4 17:16:00 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    1871 Bytes = 1.83 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   51b89b31605ee62038c8468c429af091dfc75ec7
 Image 3 (fdt@xilfpga)
  Description:  MIPSfpga (xilfpga) Device Tree
  Created:      Fri Jan  4 17:16:00 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    2708 Bytes = 2.64 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   509ce58e44c561d54539e64e9d4b47054e696fc6
 Default Configuration: 'conf@default'
 Configuration 0 (conf@default)
  Description:  Generic Linux kernel
  Kernel:       kernel@0
 Configuration 1 (conf@boston)
  Description:  Boston Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@boston
 Configuration 2 (conf@ni169445)
  Description:  NI 169445 Linux Kernel
  Kernel:       kernel@0
  FDT:          fdt@ni169445
 Configuration 3 (conf@xilfpga)
  Description:  MIPSfpga Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@xilfpga
Completed OK
# rm -rf /kisskb/build/linus_mips-defconfig_mipsel
# Build took: 0:02:09.402375