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Linus Torvalds 413879a10b RISC-V changes for 4.16
This tag contains the fixes we'd like to target for the 4.16 merge
 window.  It's not as much as I was originally hoping to do but between
 glibc, the chip, and FOSDEM there just wasn't enough time to get
 everything put together.  As such, this merge window is essentially just
 going to be small changes.  This includes mostly cleanups:
 
 * A build fix failure to the audit test cases.  RISC-V doesn't have
   renameat because the generic syscall ABI moved to renameat2 by the
   time of our port.  The syscall audit test cases don't understand this,
   so I added a trivial fix.  This went through mailing list review
   during the 4.15 merge window, but nobody has picked it up so I think
   it's best to just do this here.
 * The removal of our command-line argument processing code.  The
   "mem_end" stuff was broken and the rest duplicated generic device tree
   code.  The generic code was already being called.
 * Some unused/redundant code has been removed, including
   __ARCH_HAVE_MMU, current_pgdir, and the initialization of init_mm.pgd.
 * SUM is disabled upon taking a trap, which means that user memory is
   protected during traps taking inside copy_{to,from}_user().
 * The sptbr CSR has been renamed to satp in C code.  We haven't changed
   the assembly code in order to maintain compatibility with binutils
   2.29, which doesn't understand the new name.
 
 Additionally, we're adding some new features:
 
 * Basic ftrace support, thanks to Alan Kao!
 * Support for ZONE_DMA32.  This is necessary for all the normal reasons,
   but also to deal with a deficiency in the Xilinx PCIe controller we're
   using on our FPGA-based systems.  While the ZONE_DMA32 addition should
   be sufficient for most uses, it doesn't complete the fix for the
   Xilinx controller.
 * TLB shootdowns now only target the harts where they're necessary,
   instead of applying to all harts in the system.
 
 These patches have all been sitting on our linux-next branch for a while
 now.  Due to time constraints this is all I feel comfortable submitting
 during the 4.16 merge window, hopefully we'll do better next time!
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Merge tag 'riscv-for-linus-4.16-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V updates from Palmer Dabbelt:
 "This contains the fixes we'd like to target for the 4.16 merge window.
  It's not as much as I was originally hoping to do but between glibc,
  the chip, and FOSDEM there just wasn't enough time to get everything
  put together. As such, this merge window is essentially just going to
  be small changes. This includes mostly cleanups:

   - A build fix failure to the audit test cases.

     RISC-V doesn't have renameat because the generic syscall ABI moved
     to renameat2 by the time of our port. The syscall audit test cases
     don't understand this, so I added a trivial fix. This went through
     mailing list review during the 4.15 merge window, but nobody has
     picked it up so I think it's best to just do this here.

   - The removal of our command-line argument processing code. The
     "mem_end" stuff was broken and the rest duplicated generic device
     tree code. The generic code was already being called.

   - Some unused/redundant code has been removed, including
     __ARCH_HAVE_MMU, current_pgdir, and the initialization of
     init_mm.pgd.

   - SUM is disabled upon taking a trap, which means that user memory is
     protected during traps taking inside copy_{to,from}_user().

   - The sptbr CSR has been renamed to satp in C code. We haven't
     changed the assembly code in order to maintain compatibility with
     binutils 2.29, which doesn't understand the new name.

  Additionally, we're adding some new features:

   - Basic ftrace support, thanks to Alan Kao!

   - Support for ZONE_DMA32.

     This is necessary for all the normal reasons, but also to deal with
     a deficiency in the Xilinx PCIe controller we're using on our
     FPGA-based systems. While the ZONE_DMA32 addition should be
     sufficient for most uses, it doesn't complete the fix for the
     Xilinx controller.

   - TLB shootdowns now only target the harts where they're necessary,
     instead of applying to all harts in the system.

  These patches have all been sitting on our linux-next branch for a
  while now. Due to time constraints this is all I feel comfortable
  submitting during the 4.16 merge window, hopefully we'll do better
  next time!"

[ Note to self: "harts" is RISC-V speak for "hardware threads".  I had
  to look that up.    - Linus ]

* tag 'riscv-for-linus-4.16-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  riscv: inline set_pgdir into its only caller
  riscv: rename sptbr to satp
  riscv: don't read back satp in paging_init
  riscv: remove the unused current_pgdir function
  riscv: add ZONE_DMA32
  RISC-V: Limit the scope of TLB shootdowns
  riscv: disable SUM in the exception handler
  riscv: remove redundant unlikely()
  riscv: remove unused __ARCH_HAVE_MMU define
  riscv/ftrace: Add basic support
  RISC-V: Remove mem_end command line processing
  RISC-V: Remove duplicate command-line parsing logic
  audit: Avoid build failures on systems without renameat
2018-02-07 11:33:08 -08:00
arch RISC-V changes for 4.16 2018-02-07 11:33:08 -08:00
block for-linus-20180204 2018-02-04 11:16:35 -08:00
certs License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-01-31 14:22:45 -08:00
Documentation MIPS changes for 4.16 2018-02-07 11:22:44 -08:00
drivers MIPS changes for 4.16 2018-02-07 11:22:44 -08:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
include RISC-V changes for 4.16 2018-02-07 11:33:08 -08:00
init membarrier: Provide core serializing command, *_SYNC_CORE 2018-02-05 21:35:03 +01:00
ipc ipc/mqueue.c: have RT tasks queue in by priority in wq_add() 2018-02-06 18:32:46 -08:00
kernel Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
lib Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
LICENSES LICENSES: Add MPL-1.1 license 2018-01-06 10:59:44 -07:00
mm Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
net Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
samples sample/bpf: fix erspan metadata 2018-02-06 11:32:49 -05:00
scripts kasan: rework Kconfig settings 2018-02-06 18:32:47 -08:00
security pids: introduce find_get_task_by_vpid() helper 2018-02-06 18:32:46 -08:00
sound Driver Core updates for 4.16-rc1 2018-02-01 10:00:28 -08:00
tools Merge branch 'akpm' (patches from Andrew) 2018-02-06 22:15:42 -08:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt Currently, hardened usercopy performs dynamic bounds checking on slab 2018-02-03 16:25:42 -08:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore scripts/package: snap-pkg target 2017-12-13 00:00:18 +09:00
.mailmap mailmap: update Mark Yao's email address 2018-01-04 16:45:09 -08:00
COPYING [PATCH] update FSF address in COPYING 2005-09-10 10:06:29 -07:00
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS MIPS changes for 4.16 2018-02-07 11:22:44 -08:00
Makefile Makefile: introduce CONFIG_CC_STACKPROTECTOR_AUTO 2018-02-06 18:32:44 -08:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.