Commit Graph

783764 Commits

Author SHA1 Message Date
Palmer Dabbelt
9b4789eacb
Move EM_RISCV into elf-em.h
This should never have been inside our arch port to begin with, it's
just a relic from when we were maintaining out of tree patches.

Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Paul Walmsley <paul.walmsley@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-31 12:13:47 -07:00
Andreas Schwab
732e8e4130
RISC-V: properly determine hardware caps
On the Hifive-U platform, cpu 0 is a masked cpu with less capabilities
than the other cpus.  Ignore it for the purpose of determining the
hardware capabilities of the system.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-31 12:13:43 -07:00
Palmer Dabbelt
d26c4bbf99
RISC-V: SMP cleanup and new features
This patch series now has evolved to contain several related changes.

1. Updated the assorted cleanup series by Palmer.
The original cleanup patch series can be found here.
http://lists.infradead.org/pipermail/linux-riscv/2018-August/001232.html

2. Implemented decoupling linux logical CPU ids from hart id.
Some of the work has been inspired from ARM64.
Tested on QEMU & HighFive Unleashed board with/without SMP enabled.

3. Included Anup's cleanup and IPI stat patch.

All the patch series have been combined to avoid conflicts as a lot of
common code is changed different patch sets. Atish has mostly addressed
review comments and fixed checkpatch errors from Palmer's and Anup's
series.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:41:43 -07:00
Palmer Dabbelt
a6de21baf6
RISC-V: Fix some RV32 bugs and build failures
This patch set fixes up various failures in the RV32I port.  The fixes
are all nominally independent, but are really only testable together
because the RV32I port fails to build without all of them.  The patch
set includes:

* The removal of tishift on RV32I targets, as 128-bit integers are not
  supported by the toolchain.
* The removal of swiotlb from RV32I targets, since all physical
  addresses can be mapped by all hardware on all existing RV32I targets.
* The addition of ummodi3 and udivmoddi4 from an old version of GCC that
  was licensed under GPLv2 as generic code, along with their use on
  RV32I targets.
* A fix to our page alignment logic within ioremap for RV32I targets.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:39:08 -07:00
Palmer Dabbelt
4e4101cfef
riscv: Add support to no-FPU systems
This patchset adds an option, CONFIG_FPU, to enable/disable floating-
point support within the kernel.  The kernel's new behavior will be as
follows:

* with CONFIG_FPU=y
  All FPU codes are reserved.  If no FPU is found during booting, a
  global flag will be set, and those functions will be bypassed with
  condition check to that flag.

* with CONFIG_FPU=n
  No floating-point instructions in kernel and all related settings
  are excluded.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:26 -07:00
Nick Kossifidis
aef53f97b5
RISC-V: Cosmetic menuconfig changes
* Move the built-in cmdline configuration on a new menu entry "Boot
  options", it doesn't make much sense to be part of the debuging menu.

* Rename "Kernel Type" menu to "Kernel features" to be more consistent with
  what other architectures are using, plus "type" is a bit misleading here.

Signed-off-by: Nick Kossifidis <mick@ics.forth.gr>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:20 -07:00
Masahiro Yamada
ee5928843a
riscv: move GCC version check for ARCH_SUPPORTS_INT128 to Kconfig
This becomes much neater in Kconfig.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:15 -07:00
Christoph Hellwig
f31b8de988
RISC-V: remove the unused return_to_handler export
This export is not only not needed, but also breaks symbol versioning
due to being an undeclared assembly export.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:12 -07:00
Jim Wilson
b90edb3301
RISC-V: Add futex support.
Here is an attempt to add the missing futex support.  I started with the MIPS
version of futex.h and modified it until I got it working.  I tested it on
a HiFive Unleashed running Fedora Core 29 using the fc29 4.15 version of the
kernel.  This was tested against the glibc testsuite, where it fixes 14 nptl
related testsuite failures.  That unfortunately only tests the cmpxchg support,
so I also used the testcase at the end of

    https://lwn.net/Articles/148830/

which tests the atomic_op functionality, except that it doesn't verify that
the operations are atomic, which they obviously are.  This testcase runs
successfully with the patch and fails without it.

I'm not a kernel expert, so there could be details I got wrong here.  I wasn't
sure about the memory model support, so I used aqrl which seemed safest, and
didn't add fences which seemed unnecessary.  I'm not sure about the copyright
statements, I left in Ralf Baechle's line because I started with his code.
Checkpatch reports some style problems, but it is the same style as the MIPS
futex.h, and the uses of ENOSYS appear correct even though it complains about
them.  I don't know if any of that matters.

This patch was tested on qemu with the glibc nptl/tst-cond-except
testcase, and the wake_op testcase from above.

Signed-off-by: Jim Wilson <jimw@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:08 -07:00
Jim Wilson
b8c8a9590e
RISC-V: Add FP register ptrace support for gdb.
Add a variable and a macro to describe FP registers, assuming only D is
supported.  FP code is conditional on CONFIG_FPU.  The FP regs and FCSR
are copied separately to avoid copying struct padding.  Tested by hand and
with the gdb testsuite.

Signed-off-by: Jim Wilson <jimw@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:04 -07:00
Palmer Dabbelt
86e581e310
RISC-V: Mask out the F extension on systems without D
The RISC-V Linux port doesn't support systems that have the F extension
but don't have the D extension -- we actually don't support systems
without D either, but Alan's patch set is rectifying that soon.  For now
I think we can leave this in a semi-broken state and just wait for
Alan's patch set to get merged for proper non-FPU support -- the patch
set is starting to look good, so doing something in-between doesn't seem
like it's worth the work.

I don't think it's worth fretting about support for systems with F but
not D for now: our glibc ABIs are IMAC and IMAFDC so they probably won't
end up being popular.  We can always extend this in the future.

CC: Alan Kao <alankao@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:38:00 -07:00
Palmer Dabbelt
1760debb51
RISC-V: Don't set cacheinfo.{physical_line_partition,attributes}
These are just hard coded in the RISC-V port, which doesn't make any
sense.  We should probably be setting these from device tree entries
when they exist, but for now I think it's saner to just leave them all
as their default values.

Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:37:41 -07:00
Anup Patel
8b20d2db0a
RISC-V: Show IPI stats
This patch provides arch_show_interrupts() implementation to
show IPI stats via /proc/interrupts.

Now the contents of /proc/interrupts" will look like below:
           CPU0       CPU1       CPU2       CPU3
  8:         17          7          6         14  SiFive PLIC   8  virtio0
 10:         10         10          9         11  SiFive PLIC  10  ttyS0
IPI0:       170        673        251         79  Rescheduling interrupts
IPI1:         1         12         27          1  Function call interrupts

Signed-off-by: Anup Patel <anup@brainfault.org>
[Atish - Fixed checkpatch errors]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>

Changes since v2:
 - Remove use of IPI_CALL_WAKEUP because it's being removed

Changes since v1:
 - Add stub inline show_ipi_stats() function for !CONFIG_SMP
 - Make ipi_names[] dynamically sized at compile time
 - Minor beautification of ipi_names[] using tabs

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:37 -07:00
Anup Patel
4b26d22fdf
RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo
Currently, /proc/cpuinfo show logical CPU ID as Hart ID which
is in-correct. This patch shows CPU ID and Hart ID separately
in /proc/cpuinfo using cpuid_to_hardid_map().

With this patch, contents of /proc/cpuinfo looks as follows:
processor	: 0
hart		: 1
isa		: rv64imafdc
mmu		: sv48

processor	: 1
hart		: 0
isa		: rv64imafdc
mmu		: sv48

processor	: 2
hart		: 2
isa		: rv64imafdc
mmu		: sv48

processor	: 3
hart		: 3
isa		: rv64imafdc
mmu		: sv48

Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:37 -07:00
Atish Patra
f99fb607fb
RISC-V: Use Linux logical CPU number instead of hartid
Setup the cpu_logical_map during boot. Moreover, every SBI call
and PLIC context are based on the physical hartid. Use the logical
CPU to hartid mapping to pass correct hartid to respective functions.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:37 -07:00
Atish Patra
6825c7a80f
RISC-V: Add logical CPU indexing for RISC-V
Currently, both Linux CPU id and hart id are same.
This is not recommended as it will lead to discontinuous CPU
indexing in Linux. Moreover, kdump kernel will run from CPU0
which would be absent if we follow existing scheme.

Implement a logical mapping between Linux CPU id and hart
id to decouple these two. Always mark the boot processor as
CPU0 and all other CPUs get the logical CPU id based on their
booting order.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:37 -07:00
Atish Patra
a37d56fc40
RISC-V: Use WRITE_ONCE instead of direct access
The secondary harts spin on couple of per cpu variables until both of
these are non-zero so it's not necessary to have any ordering here.
However, WRITE_ONCE should be used to avoid tearing.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:37 -07:00
Palmer Dabbelt
46373cb442
RISC-V: Use mmgrab()
commit f1f1007644 ("mm: add new mmgrab() helper") added a
helper that we missed out on.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:36 -07:00
Palmer Dabbelt
177fae4515
RISC-V: Rename im_okay_therefore_i_am to found_boot_cpu
The old name was a bit odd.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:36 -07:00
Palmer Dabbelt
b2f8cfa7ac
RISC-V: Rename riscv_of_processor_hart to riscv_of_processor_hartid
It's a bit confusing exactly what this function does: it actually
returns the hartid of an OF processor node, failing with -1 on invalid
nodes.  I've changed the name to _hartid() in order to make that a bit
more clear, as well as adding a comment.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:36 -07:00
Palmer Dabbelt
9639a44394
RISC-V: Provide a cleaner raw_smp_processor_id()
I'm not sure how I managed to miss this the first time, but this is much
better.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: code comment formatting and other fixes]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:36 -07:00
Atish Patra
6db170ff4c
RISC-V: Disable preemption before enabling interrupts
Currently, irq is enabled before preemption disabling happens.
If the scheduler fired right here and cpu is scheduled then it
may blow up.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: Commit text and code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:36 -07:00
Palmer Dabbelt
b18d6f0525
RISC-V: Comment on the TLB flush in smp_callin()
This isn't readily apparent from reading the code.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:36 -07:00
Palmer Dabbelt
19ccf29bb1
RISC-V: Filter ISA and MMU values in cpuinfo
We shouldn't be directly passing device tree values to userspace, both
because there could be mistakes in device trees and because the kernel
doesn't support arbitrary ISAs.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
[Atish: checkpatch fix and code comment formatting update]
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:35 -07:00
Palmer Dabbelt
566d6c428e
RISC-V: Don't set cacheinfo.{physical_line_partition,attributes}
These are just hard coded in the RISC-V port, which doesn't make any
sense.  We should probably be setting these from device tree entries
when they exist, but for now I think it's saner to just leave them all
as their default values.

Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:35 -07:00
Anup Patel
1ed4237ab6
RISC-V: No need to pass scause as arg to do_IRQ()
The scause is already part of pt_regs so no need to pass
scause as separate arg to do_IRQ().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:03:35 -07:00
Vincent Chen
827a438156
RISC-V: Avoid corrupting the upper 32-bit of phys_addr_t in ioremap
For 32bit, the upper 32-bit of phys_addr_t will be flushed to zero
after AND with PAGE_MASK because the data type of PAGE_MASK is
unsigned long. To fix this problem, the page alignment is done by
subtracting the page offset instead of AND with PAGE_MASK.

Signed-off-by: Vincent Chen <vincentc@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:56 -07:00
Zong Li
757331db92
RISC-V: Select GENERIC_LIB_UMODDI3 on RV32
On 32-bit, it need to use __umoddi3 by some drivers.

Signed-off-by: Zong Li <zong@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:56 -07:00
Zong Li
6315730e9e
lib: Add umoddi3 and udivmoddi4 of GCC library routines
Add umoddi3 and udivmoddi4 support for 32-bit.

The RV32 need the umoddi3 to do modulo when the operands are long long
type, like other libraries implementation such as ucmpdi2, lshrdi3 and
so on.

I encounter the undefined reference 'umoddi3' when I use the in
house dma driver, although it is in house driver, but I think that
umoddi3 is a common function for RV32.

The udivmoddi4 and umoddi3 are copies from libgcc in gcc. There are other
functions use the udivmoddi4 in libgcc, so I separate the umoddi3 and
udivmoddi4 for flexible extension in the future.

Signed-off-by: Zong Li <zong@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:56 -07:00
Zong Li
51858aaf9b
RISC-V: Use swiotlb on RV64 only
Only RV64 supports swiotlb. On RV32, it don't select the SWIOTLB.

Signed-off-by: Zong Li <zong@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:56 -07:00
Zong Li
7f47c73b35
RISC-V: Build tishift only on 64-bit
Only RV64 supports 128 integer size.

Signed-off-by: Zong Li <zong@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:55 -07:00
Alan Kao
9411ec60c2
Auto-detect whether a FPU exists
We expect that a kernel with CONFIG_FPU=y can still support no-FPU
machines. To do so, the kernel should first examine the existence of a
FPU, then do nothing if a FPU does exist; otherwise, it should
disable/bypass all FPU-related functions.

In this patch, a new global variable, has_fpu, is created and determined
when parsing the hardware capability from device tree during booting.
This variable is used in those FPU-related functions.

Signed-off-by: Alan Kao <alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Zong Li <zong@andestech.com>
Cc: Nick Hu <nickhu@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:23 -07:00
Alan Kao
9671f70614
Allow to disable FPU support
FPU codes have been separated from common part in previous patches.
This patch add the CONFIG_FPU option and some stubs, so that a no-FPU
configuration is allowed.

Signed-off-by: Alan Kao <alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Zong Li <zong@andestech.com>
Cc: Nick Hu <nickhu@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:23 -07:00
Alan Kao
e8be530233
Cleanup ISA string setting
This patch cleanup the MARCH string passing to both compiler and
assembler.  Note that the CFLAGS should not contain "fd" before we
have mechnisms like kernel_fpu_begin/end in other architectures.

Signed-off-by: Alan Kao <alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Zong Li <zong@andestech.com>
Cc: Nick Hu <nickhu@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:23 -07:00
Alan Kao
007f5c3589
Refactor FPU code in signal setup/return procedures
FPU-related logic is separated from normal signal handling path in
this patch.  Kernel can easily be configured to exclude those procedures
for no-FPU systems.

Signed-off-by: Alan Kao <alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Zong Li <zong@andestech.com>
Cc: Nick Hu <nickhu@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:23 -07:00
Alan Kao
e68ad867f7
Extract FPU context operations from entry.S
We move __fstate_save and __fstate_restore to a new source
file, fpu.S.

Signed-off-by: Alan Kao <alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Zong Li <zong@andestech.com>
Cc: Nick Hu <nickhu@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22 17:02:22 -07:00
Greg Kroah-Hartman
84df9525b0 Linux 4.19 2018-10-22 07:37:37 +01:00
Greg Kroah-Hartman
8e630c31a3 MAINTAINERS: Add an entry for the code of conduct
As I introduced these files, I'm willing to be the maintainer of them as
well.

Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:36 +01:00
Greg Kroah-Hartman
f3f76d6401 Code of Conduct: Change the contact email address
The contact point for the kernel's Code of Conduct should now be the
Code of Conduct Committee, not the full TAB.  Change the email address
in the file to properly reflect this.

Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:36 +01:00
Greg Kroah-Hartman
d117a85478 Code of Conduct Interpretation: Put in the proper URL for the committee
There was a blank <URL> reference for how to find the Code of Conduct
Committee.  Fix that up by pointing it to the correct kernel.org website
page location.

Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:36 +01:00
Greg Kroah-Hartman
f7e5858432 Code of Conduct: Provide links between the two documents
Create a link between the Code of Conduct and the Code of Conduct
Interpretation so that people can see that they are related.

Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:36 +01:00
Greg Kroah-Hartman
d84feee76f Code of Conduct Interpretation: Properly reference the TAB correctly
We use the term "TAB" before defining it later in the document.  Fix
that up by defining it at the first location.

Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:35 +01:00
Greg Kroah-Hartman
79dbeed36f Code of Conduct Interpretation: Add document explaining how the Code of Conduct is to be interpreted
The Contributor Covenant Code of Conduct is a general document meant to
provide a set of rules for almost any open source community.  Every
open-source community is unique and the Linux kernel is no exception.
Because of this, this document describes how we in the Linux kernel
community will interpret it.  We also do not expect this interpretation
to be static over time, and will adjust it as needed.

This document was created with the input and feedback of the TAB as well
as many current kernel maintainers.

Co-Developed-by: Thomas Gleixner <tglx@linutronix.de>
Co-Developed-by: Olof Johansson <olof@lixom.net>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Borislav Petkov <bp@kernel.org>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Acked-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: David Sterba <kdave@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Hans de Goede <j.w.r.degoede@gmail.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: James Smart <james.smart@broadcom.com>
Acked-by: James Smart <jsmart2021@gmail.com>
Acked-by: Jan Kara <jack@ucw.cz>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Jiri Kosina <jikos@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Lina Iyer <ilina@codeaurora.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Matias Bjørling <mb@lightnvm.io>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Mishi Choudhary <mishi@linux.com>
Acked-by: Nikolay Borisov <n.borisov.lkml@gmail.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Acked-by: Palmer Dabbelt <palmer@dabbelt.com>
Acked-by: Paul E. McKenney <paulmck@linux.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Richard Weinberger <richard@nod.at>
Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Sean Paul <sean@poorly.run>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Shuah Khan <shuah@kernel.org>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Takashi Iwai <tiwai@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:35 +01:00
Chris Mason
c1d1ba844f Code of conduct: Fix wording around maintainers enforcing the code of conduct
As it was originally worded, this paragraph requires maintainers to
enforce the code of conduct, or face potential repercussions.  It sends
the wrong message, when really we just want maintainers to be part of
the solution and not violate the code of conduct themselves.

Removing it doesn't limit our ability to enforce the code of conduct,
and we can still encourage maintainers to help maintain high standards
for the level of discourse in their subsystem.

Signed-off-by: Chris Mason <clm@fb.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Borislav Petkov <bp@kernel.org>
Acked-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: David Sterba <kdave@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Hans de Goede <j.w.r.degoede@gmail.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: James Smart <james.smart@broadcom.com>
Acked-by: James Smart <jsmart2021@gmail.com>
Acked-by: Jan Kara <jack@ucw.cz>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Jiri Kosina <jikos@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Lina Iyer <ilina@codeaurora.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Matias Bjørling <mb@lightnvm.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Nikolay Borisov <n.borisov.lkml@gmail.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Palmer Dabbelt <palmer@dabbelt.com>
Acked-by: Paul E. McKenney <paulmck@linux.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Richard Weinberger <richard@nod.at>
Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Shuah Khan <shuah@kernel.org>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Takashi Iwai <tiwai@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Tim Bird <tim.bird@sony.com>
Acked-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 07:33:35 +01:00
Greg Kroah-Hartman
467e050e97 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Wolfram writes:
  "i2c for 4.19

   Another driver bugfix and MAINTAINERS addition from I2C."

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: rcar: cleanup DMA for all kinds of failure
  MAINTAINERS: Add entry for Broadcom STB I2C controller
2018-10-21 13:51:36 +02:00
Greg Kroah-Hartman
23469de647 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David writes:
  "Networking:

   A few straggler bug fixes:

   1) Fix indexing of multi-pass dumps of ipv6 addresses, from David
      Ahern.

   2) Revert RCU locking change for bonding netpoll, causes worse
      problems than it solves.

   3) pskb_trim_rcsum_slow() doesn't handle odd trim offsets, resulting
      in erroneous bad hw checksum triggers with CHECKSUM_COMPLETE
      devices.  From Dimitris Michailidis.

   4) a revert to some neighbour code changes that adjust notifications
      in a way that confuses some apps."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  Revert "neighbour: force neigh_invalidate when NUD_FAILED update is from admin"
  net/ipv6: Fix index counter for unicast addresses in in6_dump_addrs
  net: fix pskb_trim_rcsum_slow() with odd trim offset
  Revert "bond: take rcu lock in netpoll_send_skb_on_dev"
2018-10-21 10:08:38 +02:00
Roopa Prabhu
d2fb4fb8ee Revert "neighbour: force neigh_invalidate when NUD_FAILED update is from admin"
This reverts commit 8e326289e3.

This patch results in unnecessary netlink notification when one
tries to delete a neigh entry already in NUD_FAILED state. Found
this with a buggy app that tries to delete a NUD_FAILED entry
repeatedly. While the notification issue can be fixed with more
checks, adding more complexity here seems unnecessary. Also,
recent tests with other changes in the neighbour code have
shown that the INCOMPLETE and PROBE checks are good enough for
the original issue.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-20 22:25:01 -07:00
David Ahern
4ba4c566ba net/ipv6: Fix index counter for unicast addresses in in6_dump_addrs
The loop wants to skip previously dumped addresses, so loops until
current index >= saved index. If the message fills it wants to save
the index for the next address to dump - ie., the one that did not
fit in the current message.

Currently, it is incrementing the index counter before comparing to the
saved index, and then the saved index is off by 1 - it assumes the
current address is going to fit in the message.

Change the index handling to increment only after a succesful dump.

Fixes: 502a2ffd73 ("ipv6: convert idev_list to list macros")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-20 15:43:14 -07:00
Wolfram Sang
31d86033a0 i2c: rcar: cleanup DMA for all kinds of failure
DMA needs to be cleaned up not only on timeout, but on all errors where
it has been setup before.

Fixes: 73e8b05283 ("i2c: rcar: add DMA support")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-10-20 15:25:59 +02:00
Kamal Dasu
72a7a4aa77 MAINTAINERS: Add entry for Broadcom STB I2C controller
Add an entry for the Broadcom STB I2C controller in the MAINTAINERS file.

Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
[wsa: fixed sorting and a whitespace error]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-10-20 15:22:13 +02:00