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Christoph Hellwig ce450ebf61 arm: fix the flush_icache_range arguments in set_fiq_handler 
Patch series "sort out the flush_icache_range mess", v2.

flush_icache_range is mostly used for kernel address, except for the
following cases:

 - the nommu brk and mmap implementations

 - the read_code helper that is only used for binfmt_flat,
   binfmt_elf_fdpic, and binfmt_aout including the broken
   ia32 compat version

 - binfmt_flat itself

none of which really are used by a typical MMU enabled kernel, as a.out
can only be build for alpha and m68k to start with.

But strangely enough commit ae92ef8a44 ("PATCH] flush icache in
correct context") added a "set_fs(KERNEL_DS)" around the
flush_icache_range call in the module loader, because apparently m68k
assumed user pointers.

This series first cleans up the cacheflush implementations, largely by
switching as much as possible to the asm-generic version after a few
preparations, then moves the misnamed current flush_icache_user_range to
a new name, to finally introduce a real flush_icache_user_range to be
used for the above use cases to flush the instruction cache for a
userspace address range.  The last patch then drops the set_fs in the
module code and moves it into the m68k implementation.

This patch (of 29):

The arguments passed look bogus, try to fix them to something that seems
to make sense.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yonghong Song <yhs@fb.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200515143646.3857579-1-hch@lst.de
Link: http://lkml.kernel.org/r/20200515143646.3857579-2-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08 11:05:57 -07:00
arch arm: fix the flush_icache_range arguments in set_fiq_handler 2020-06-08 11:05:57 -07:00
block for-5.8/drivers-2020-06-01 2020-06-02 15:37:03 -07:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto crypto: engine - do not requeue in case of fatal error 2020-05-28 17:27:52 +10:00
Documentation docs: mm/gup: pin_user_pages.rst: add a "case 5" 2020-06-08 11:05:57 -07:00
drivers vhost: convert get_user_pages() --> pin_user_pages() 2020-06-08 11:05:57 -07:00
fs kernel/watchdog.c: convert {soft/hard}lockup boot parameters to sysctl aliases 2020-06-08 11:05:56 -07:00
include mm/gup: introduce pin_user_pages_locked() 2020-06-08 11:05:56 -07:00
init kernel/sysctl: support setting sysctl parameters from kernel command line 2020-06-08 11:05:56 -07:00
ipc ipc/namespace.c: use a work queue to free_ipc 2020-06-08 11:05:56 -07:00
kernel mm/gup.c: convert to use get_user_{page|pages}_fast_only() 2020-06-08 11:05:56 -07:00
lib lib/test_sysctl: support testing of sysctl. boot parameter 2020-06-08 11:05:56 -07:00
LICENSES
mm mm/gup: documentation fix for pin_user_pages*() APIs 2020-06-08 11:05:56 -07:00
net Kbuild updates for v5.8 2020-06-06 12:00:25 -07:00
samples Kbuild updates for v5.8 2020-06-06 12:00:25 -07:00
scripts Fix for arch/sh build regression with newer binutils, removal of SH5, 2020-06-06 15:22:01 -07:00
security integrity-v5.8 2020-06-06 09:39:05 -07:00
sound powerpc updates for 5.8 2020-06-05 12:39:30 -07:00
tools lib/test_sysctl: support testing of sysctl. boot parameter 2020-06-08 11:05:56 -07:00
usr bpfilter: match bit size of bpfilter_umh to that of the kernel 2020-05-17 18:52:01 +09:00
virt mm/gup.c: convert to use get_user_{page|pages}_fast_only() 2020-06-08 11:05:56 -07:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore modpost: generate vmlinux.symvers and reuse it for the second modpost 2020-06-06 23:38:12 +09:00
.mailmap A fair amount of stuff this time around, dominated by yet another massive 2020-06-01 15:45:27 -07:00
COPYING
CREDITS mailmap: change email for Ricardo Ribalda 2020-05-25 18:59:59 -06:00
Kbuild
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Staging/IIO driver patches for 5.8-rc1 2020-06-07 10:45:08 -07:00
Makefile Kbuild updates for v5.8 2020-06-06 12:00:25 -07:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.