Commit Graph

9523 Commits

Author SHA1 Message Date
Linus Torvalds b2298fc900 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "Another round of MIPS fixes:

   - compressed boot: Ignore a generated .c file

   - VDSO: Fix a register clobber list

   - DECstation: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression

   - Octeon: Fix recent cleanups that cleaned away a bit too much thus
     breaking the arch side of the EDAC and USB drivers.

   - uasm: Fix duplicate const in "const struct foo const bar[]" which
     GCC 7.1 no longer accepts.

   - Fix race on setting and getting cpu_online_mask

   - Fix preemption issue. To do so cleanly introduce macro to get the
     size of L3 cache line.

   - Revert include cleanup that sometimes results in build error

   - MicroMIPS uses bit 0 of the PC to indicate microMIPS mode. Make
     sure this bit is set for kernel entry as well.

   - Prevent configuring the kernel for both microMIPS and MT. There are
     no such CPUs currently and thus the combination is unsupported and
     results in build errors.

  This has been sitting in linux-next for a few days and has survived
  automated testing by Imagination's test farm. No known regressions
  pending except a number of issues that crept up due to lots of people
  switching to GCC 7.1"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Set ISA bit in entry-y for microMIPS kernels
  MIPS: Prevent building MT support for microMIPS kernels
  MIPS: PCI: Fix smp_processor_id() in preemptible
  MIPS: Introduce cpu_tcache_line_size
  MIPS: DEC: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression
  MIPS: VDSO: Fix clobber lists in fallback code paths
  Revert "MIPS: Don't unnecessarily include kmalloc.h into <asm/cache.h>."
  MIPS: OCTEON: Fix USB platform code breakage.
  MIPS: Octeon: Fix broken EDAC driver.
  MIPS: gitignore: ignore generated .c files
  MIPS: Fix race on setting and getting cpu_online_mask
  MIPS: mm: remove duplicate "const" qualifier on insn_table
2017-08-13 15:34:28 -07:00
Linus Torvalds 4530cca198 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "The pull requests are getting smaller, that's progress I suppose :-)

   1) Fix infinite loop in CIPSO option parsing, from Yujuan Qi.

   2) Fix remote checksum handling in VXLAN and GUE tunneling drivers,
      from Koichiro Den.

   3) Missing u64_stats_init() calls in several drivers, from Florian
      Fainelli.

   4) TCP can set the congestion window to an invalid ssthresh value
      after congestion window reductions, from Yuchung Cheng.

   5) Fix BPF jit branch generation on s390, from Daniel Borkmann.

   6) Correct MIPS ebpf JIT merge, from David Daney.

   7) Correct byte order test in BPF test_verifier.c, from Daniel
      Borkmann.

   8) Fix various crashes and leaks in ASIX driver, from Dean Jenkins.

   9) Handle SCTP checksums properly in mlx4 driver, from Davide
      Caratti.

  10) We can potentially enter tcp_connect() with a cached route
      already, due to fastopen, so we have to explicitly invalidate it.

  11) skb_warn_bad_offload() can bark in legitimate situations, fix from
      Willem de Bruijn"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
  net: avoid skb_warn_bad_offload false positives on UFO
  qmi_wwan: fix NULL deref on disconnect
  ppp: fix xmit recursion detection on ppp channels
  rds: Reintroduce statistics counting
  tcp: fastopen: tcp_connect() must refresh the route
  net: sched: set xt_tgchk_param par.net properly in ipt_init_target
  net: dsa: mediatek: add adjust link support for user ports
  net/mlx4_en: don't set CHECKSUM_COMPLETE on SCTP packets
  qed: Fix a memory allocation failure test in 'qed_mcp_cmd_init()'
  hysdn: fix to a race condition in put_log_buffer
  s390/qeth: fix L3 next-hop in xmit qeth hdr
  asix: Fix small memory leak in ax88772_unbind()
  asix: Ensure asix_rx_fixup_info members are all reset
  asix: Add rx->ax_skb = NULL after usbnet_skb_return()
  bpf: fix selftest/bpf/test_pkt_md_access on s390x
  netvsc: fix race on sub channel creation
  bpf: fix byte order test in test_verifier
  xgene: Always get clk source, but ignore if it's missing for SGMII ports
  MIPS: Add missing file for eBPF JIT.
  bpf, s390: fix build for libbpf and selftest suite
  ...
2017-08-09 10:14:04 -07:00
Paul Burton 5fc9484f5e MIPS: Set ISA bit in entry-y for microMIPS kernels
When building a kernel for the microMIPS ISA, ensure that the ISA bit
(ie. bit 0) in the entry address is set. Otherwise we may include an
entry address in images which bootloaders will jump to as MIPS32 code.

I originally tried using "objdump -f" to obtain the entry address, which
works for microMIPS but it always outputs a 32 bit address for a 32 bit
ELF whilst nm will sign extend to 64 bit. That matters for systems where
we might want to run a MIPS32 kernel on a MIPS64 CPU & load it with a
MIPS64 bootloader, which would then jump to a non-canonical
(non-sign-extended) address.

This works in all cases as it only changes the behaviour for microMIPS
kernels, but isn't the prettiest solution. A possible alternative would
be to write a custom tool to just extract, sign extend & print the entry
point of an ELF executable. I'm open to feedback if that would be
preferred.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16950/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-08 14:00:50 +02:00
Paul Burton 527f10285b MIPS: Prevent building MT support for microMIPS kernels
We don't currently support the MT ASE for microMIPS kernels, and there
are no CPUs currently in existence that use both. They can however both
be enabled in Kconfig, resulting in build failures such as:

  AS      arch/mips/kernel/cps-vec.o
arch/mips/kernel/cps-vec.S: Assembler messages:
arch/mips/kernel/cps-vec.S:242: Warning: the 32-bit microMIPS architecture does not support the `mt' extension
arch/mips/kernel/cps-vec.S:276: Error: unrecognized opcode `mttc0 $13,$2,2'
arch/mips/kernel/cps-vec.S:282: Error: unrecognized opcode `mttc0 $8,$1,2'
arch/mips/kernel/cps-vec.S:285: Error: unrecognized opcode `mttc0 $0,$2,1'
...

Fix this by preventing MT from being enabled when targeting microMIPS.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16951/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-08 13:57:10 +02:00
Matt Redfearn 735302665c MIPS: PCI: Fix smp_processor_id() in preemptible
Commit 1c3c5eab17 ("sched/core: Enable might_sleep() and
smp_processor_id() checks early") enables checks for might_sleep() and
smp_processor_id() being used in preemptible code earlier in the boot
than before. This results in a new BUG from
pcibios_set_cache_line_size().

BUG: using smp_processor_id() in preemptible [00000000] code:
swapper/0/1 caller is pcibios_set_cache_line_size+0x10/0x70
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc1-00007-g3ce3e4ba4275 #615
Stack: 0000000000000000 ffffffff81189694 0000000000000000 ffffffff81822318
       000000000000004e 0000000000000001 800000000e20bd08 20c49ba5e3540000
       0000000000000000 0000000000000000 ffffffff818d0000 0000000000000000
       0000000000000000 ffffffff81189328 ffffffff818ce692 0000000000000000
       0000000000000000 ffffffff81189bc8 ffffffff818d0000 0000000000000000
       ffffffff81828907 ffffffff81769970 800000020ec78d80 ffffffff818c7b48
       0000000000000001 0000000000000001 ffffffff818652b0 ffffffff81896268
       ffffffff818c0000 800000020ec7fb40 800000020ec7fc58 ffffffff81684cac
       0000000000000000 ffffffff8118ab50 0000000000000030 ffffffff81769970
       0000000000000001 ffffffff81122a58 0000000000000000 0000000000000000 ...
Call Trace:
[<ffffffff81122a58>] show_stack+0x90/0xb0
[<ffffffff81684cac>] dump_stack+0xac/0xf0
[<ffffffff813f7050>] check_preemption_disabled+0x120/0x128
[<ffffffff818855e8>] pcibios_set_cache_line_size+0x10/0x70
[<ffffffff81100578>] do_one_initcall+0x48/0x140
[<ffffffff81865dc4>] kernel_init_freeable+0x194/0x24c
[<ffffffff8169c534>] kernel_init+0x14/0x118
[<ffffffff8111ca84>] ret_from_kernel_thread+0x14/0x1c

Fix this by using the cpu_*cache_line_size() macros instead. These
macros are the "proper" way to determine the CPU cache sizes.
This makes use of the newly added cpu_tcache_line_size.

Fixes: 1c3c5eab17 ("sched/core: Enable might_sleep() and smp_processor_id() checks early")
Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Suggested-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-08 00:04:31 +02:00
Matt Redfearn 21da533232 MIPS: Introduce cpu_tcache_line_size
There exist macros to return the cache line size of the L1 dcache and L2
scache but there is currently no macro for the L3 tcache. Add this macro
which will be used by the following patch "MIPS: PCI: Fix
smp_processor_id() in preemptible"

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16871/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-08 00:02:27 +02:00
Maciej W. Rozycki 68fe55680d MIPS: DEC: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression
Fix a commit 3021773c7c ("MIPS: DEC: Avoid la pseudo-instruction in
delay slots") regression and remove assembly errors:

arch/mips/dec/int-handler.S: Assembler messages:
arch/mips/dec/int-handler.S:162: Error: Macro used $at after ".set noat"
arch/mips/dec/int-handler.S:163: Error: Macro used $at after ".set noat"
arch/mips/dec/int-handler.S:229: Error: Macro used $at after ".set noat"
arch/mips/dec/int-handler.S:230: Error: Macro used $at after ".set noat"

triggering with with the CPU_DADDI_WORKAROUNDS option set and the DADDIU
instruction.  This is because with that option in place the instruction
becomes a macro, which expands to an LI/DADDU (or actually ADDIU/DADDU)
sequence that uses $at as a temporary register.

With CPU_DADDI_WORKAROUNDS we only support `-msym32' compilation though,
and this is already enforced in arch/mips/Makefile, so choose the 32-bit
expansion variant for the supported configurations and then replace the
64-bit variant with #error just in case.

Fixes: 3021773c7c ("MIPS: DEC: Avoid la pseudo-instruction in delay slots")
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org # 4.8+
Patchwork: https://patchwork.linux-mips.org/patch/16893/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 16:31:03 +02:00
Goran Ferenc b399ee28c2 MIPS: VDSO: Fix clobber lists in fallback code paths
Extend clobber lists to include all GP registers.

Fixes: 0b523a85e1 ("MIPS: VDSO: Add implementation of gettimeofday() fallback")

Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Bo Hu <bohu@google.com>
Cc: Douglas Leung <douglas.leung@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jin Qian <jinqian@google.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Petar Jovanovic <petar.jovanovic@imgtec.com>
Cc: Raghu Gandham <raghu.gandham@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16879/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 13:53:25 +02:00
Paul Burton ae5b067594 Revert "MIPS: Don't unnecessarily include kmalloc.h into <asm/cache.h>."
Commit 296e46db00 ("MIPS: Don't unnecessarily include kmalloc.h into
<asm/cache.h>.") claimed that the inclusion of the machine's kmalloc.h
from asm/cache.h is unnecessary, but this is not true.

Without including kmalloc.h we don't get a definition for
ARCH_DMA_MINALIGN, which means we no longer suitably align DMA. Further
to this the definition of ARCH_KMALLOC_MINALIGN provided by linux/slab.h
ends up being set to the alignment of an unsigned long long value rather
than to ARCH_DMA_MINALIGN, which means that buffers allocated using
kmalloc may no longer be safely aligned for use with DMA.

Fix this by re-adding the include of kmalloc.h in asm/cache.h. This
reverts commit 296e46db00 ("MIPS: Don't unnecessarily include
kmalloc.h into <asm/cache.h>.")

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: 296e46db00 ("MIPS: Don't unnecessarily include kmalloc.h into <asm/cache.h>.")
Cc: linux-mips@linux-mips.org
Cc: stable <stable@vger.kernel.org> # v4.12+
Patchwork: https://patchwork.linux-mips.org/patch/16895/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 12:01:17 +02:00
Steven J. Hill bed5846430 MIPS: OCTEON: Fix USB platform code breakage.
Fix build error when CONFIG_SMP is turned off:

CC [M]  arch/mips/cavium-octeon/octeon-usb.o
arch/mips/cavium-octeon/octeon-usb.c: In function
‘dwc3_octeon_device_init’:
arch/mips/cavium-octeon/octeon-usb.c:540:4: error: implicit declaration
of function ‘devm_iounmap’ [-Werror=implicit-function-declaration]
     devm_iounmap(&pdev->dev, base);

Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Tested-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16907/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 11:59:53 +02:00
Steven J. Hill 81a67e5276 MIPS: Octeon: Fix broken EDAC driver.
Commit "MIPS: Octeon: Remove unused L2C types and macros." broke the
the EDAC driver. Bring back 'cvmx-l2d-defs.h' file and the missing
types for L2C. Fixes: 15f6847923 ("MIPS: Octeon: Remove unused L2C
types and macros.")

Fixes: 15f6847923 ("MIPS: Octeon: Remove unused L2C types and macros.")
Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.12+
Patchwork: https://patchwork.linux-mips.org/patch/16906/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 11:58:48 +02:00
Bartosz Golaszewski 33a73649ac MIPS: gitignore: ignore generated .c files
Add ashldi3.c and bswapsi.c to the list of ignored files.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16905/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 11:57:30 +02:00
Matija Glavinic Pecotic 6f542ebeae MIPS: Fix race on setting and getting cpu_online_mask
While testing cpu hoptlug (cpu down and up in loops) on kernel 4.4, it was
observed that occasionally check for cpu online will fail in kernel/cpu.c,
_cpu_up:

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/kernel/cpu.c?h=v4.4.79#n485
 518        /* Arch-specific enabling code. */
 519        ret = __cpu_up(cpu, idle);
 520
 521        if (ret != 0)
 522                goto out_notify;
 523        BUG_ON(!cpu_online(cpu));

Reason is race between start_secondary and _cpu_up. cpu_callin_map is set
before cpu_online_mask. In __cpu_up, cpu_callin_map is waited for, but cpu
online mask is not, resulting in race in which secondary processor started
and set cpu_callin_map, but not yet set the online mask,resulting in above
BUG being hit.

Upstream differs in the area. cpu_online check is in bringup_wait_for_ap,
which is after cpu reached AP_ONLINE_IDLE,where secondary passed its start
function. Nonetheless, fix makes start_secondary safe and not depending on
other locks throughout the code. It protects as well against cpu_online
checks put in between sometimes in the future.

Fix this by moving completion after all flags are set.

Signed-off-by: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16925/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 11:57:30 +02:00
Thomas Petazzoni 00e06297b3 MIPS: mm: remove duplicate "const" qualifier on insn_table
Fixes the following gcc 7.x build error:

arch/mips/mm/uasm-mips.c:51:26: error: duplicate ‘const’ declaration specifier [-Werror=duplicate-decl-specifier]
 static const struct insn const insn_table[insn_invalid] = {

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Fixes: ce807d5f67 ("MIPS: Optimize uasm insn lookup.")
Cc: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16926/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-08-07 11:57:30 +02:00
Linus Torvalds 6ea1bc9b1a Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "This fixes two build issues for ralink platforms, both due to missing
  #includes which used to be included indirectly via other headers"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: mt7620: Add missing header
  MIPS: ralink: Fix build error due to missing header
2017-08-06 11:52:01 -07:00
David Daney b6bd53f9c4 MIPS: Add missing file for eBPF JIT.
Inexplicably, commit f381bf6d82 ("MIPS: Add support for eBPF JIT.")
lost a file somewhere on its path to Linus' tree.  Add back the
missing ebpf_jit.c so that we can build with CONFIG_BPF_JIT selected.

This version of ebpf_jit.c is identical to the original except for two
minor change need to resolve conflicts with changes merged from the
BPF branch:

A) Set prog->jited_len = image_size;
B) Use BPF_TAIL_CALL instead of BPF_CALL | BPF_X

Fixes: f381bf6d82 ("MIPS: Add support for eBPF JIT.")
Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-04 11:23:58 -07:00
Linus Torvalds cef55b518c dma mapping fixes for 4.13-rc2:
- split the global dma coherent pool from the per-device pool.
    This fixes a regression in the earlier 4.13 pull requests where the
    global pool would override a per-device CMA pool. (Vladimir Murzin).
 -----BEGIN PGP SIGNATURE-----
 
 iQI/BAABCAApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAll3l1sLHGhjaEBsc3Qu
 ZGUACgkQD55TZVIEUYN8BhAAqFxy2CrpEBk7gD2byOi9M4kTeXDYCESEoEAwuvTG
 Fesbw5zumliBR2cjt/qk/uIDZ93fP4BuHn89NtIfcGOD1LqYOyIPwUTpmb9AgicD
 y4eO1Gy/3DrG2haZcWYmDvq8yfSuR01H3ecY1KNsX1Y2kXxeBQfVKaUDR6fuix4+
 uCf98LzIWs3TYmj7h48LVB/oNnigvs0oljrB2dWrWVJHbgGYEpmdPjBEe6r95e5U
 5cHtPno5JA1lbBFt/nvsZl/NmzSd745SL3QwJsaVmSTf7oYnAuwyPI+5gqaoeQT6
 24947e8hJjuLhBpO7RiqnJY9QdPxT0XKclkCcjnRb5j3dB9KL09f9Dz60exyJzSe
 18V8+8+1m1BgvPsAOS/pLKYxKr9Kgzl9LFrFQaBkA5+7SPlywfV7HqaCkN/mKB4F
 XJoQyRDLlZiDStDKbrhGEAHG6oYaZXnkpQ5xDitSXcSkh9/2a/elsG3caUBRI5qP
 vKC0qvfBPjnHa/3lYNNoLgADB4tZCE3rRrVP6tqdHQbjuNUNK1wLNT7PiMfeoUVj
 Oqql4le0AKlsxO4vRjavOrtaW1bVT+eAYLEtdQfXWQDvhffriEW6r6I8PGqIOiCO
 OzxemCG2M6fcD9ho/VDpjo3Ei6tZylrxdTbrsm7ogQmo/U3ID9cfs452vIOYtCcB
 9so=
 =fJWP
 -----END PGP SIGNATURE-----

Merge tag 'dma-mapping-4.13-2' of git://git.infradead.org/users/hch/dma-mapping

Pull dma mapping fixes from Christoph Hellwig:
 "split the global dma coherent pool from the per-device pool.

  This fixes a regression in the earlier 4.13 pull requests where the
  global pool would override a per-device CMA pool (Vladimir Murzin)"

* tag 'dma-mapping-4.13-2' of git://git.infradead.org/users/hch/dma-mapping:
  ARM: NOMMU: Wire-up default DMA interface
  dma-coherent: introduce interface for default DMA pool
2017-07-25 17:17:18 -07:00
Vladimir Murzin 43fc509c3e dma-coherent: introduce interface for default DMA pool
Christoph noticed [1] that default DMA pool in current form overload
the DMA coherent infrastructure. In reply, Robin suggested [2] to
split the per-device vs. global pool interfaces, so allocation/release
from default DMA pool is driven by dma ops implementation.

This patch implements Robin's idea and provide interface to
allocate/release/mmap the default (aka global) DMA pool.

To make it clear that existing *_from_coherent routines work on
per-device pool rename them to *_from_dev_coherent.

[1] https://lkml.org/lkml/2017/7/7/370
[2] https://lkml.org/lkml/2017/7/7/431

Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Andras Szemzo <sza@esh.hu>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2017-07-20 16:09:10 +02:00
Harvey Hunt f13343e877 MIPS: ralink: mt7620: Add missing header
Fix a build error caused by not including <linux/bug.h>.

The following compilation errors are caused by the missing header:

arch/mips/ralink/mt7620.c: In function ‘mt7620_get_cpu_pll_rate’:
arch/mips/ralink/mt7620.c:431:2: error: implicit declaration of function ‘WARN_ON’ [-Werror=implicit-function-declaration]
  WARN_ON(div >= ARRAY_SIZE(mt7620_clk_divider));
  ^
arch/mips/ralink/mt7620.c: In function ‘mt7620_get_sys_rate’:
arch/mips/ralink/mt7620.c:500:2: error: implicit declaration of function ‘WARN’ [-Werror=implicit-function-declaration]
  if (WARN(!div, "invalid divider for OCP ratio %u", ocp_ratio))
  ^
arch/mips/ralink/mt7620.c: In function ‘mt7620_dram_init’:
arch/mips/ralink/mt7620.c:619:3: error: implicit declaration of function ‘BUG’ [-Werror=implicit-function-declaration]
   BUG();
   ^
cc1: some warnings being treated as errors
scripts/Makefile.build:302: recipe for target 'arch/mips/ralink/mt7620.o' failed

Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16781/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-19 00:03:15 +02:00
Harvey Hunt e3ccf1d1de MIPS: ralink: Fix build error due to missing header
Previously, <linux/module.h> was included before ralink_regs.h in all
ralink files - leading to <linux/io.h> being implicitly included.

After commit 26dd3e4ff9 ("MIPS: Audit and remove any unnecessary
uses of module.h") removed the inclusion of module.h from multiple
places, some ralink platforms failed to build with the following error:

In file included from arch/mips/ralink/mt7620.c:17:0:
./arch/mips/include/asm/mach-ralink/ralink_regs.h: In function ‘rt_sysc_w32’:
./arch/mips/include/asm/mach-ralink/ralink_regs.h:38:2: error: implicit declaration of function ‘__raw_writel’ [-Werror=implicit-function-declaration]
  __raw_writel(val, rt_sysc_membase + reg);
  ^
./arch/mips/include/asm/mach-ralink/ralink_regs.h: In function ‘rt_sysc_r32’:
./arch/mips/include/asm/mach-ralink/ralink_regs.h:43:2: error: implicit declaration of function ‘__raw_readl’ [-Werror=implicit-function-declaration]
  return __raw_readl(rt_sysc_membase + reg);

Fix this by including <linux/io.h>.

Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Fixes: 26dd3e4ff9 ("MIPS: Audit and remove any unnecessary uses of module.h")
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> #4.11+
Patchwork: https://patchwork.linux-mips.org/patch/16780/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-18 23:59:18 +02:00
Gleb Fotengauer-Malinovskiy c632517923 tty: Fix TIOCGPTPEER ioctl definition
This ioctl does nothing to justify an _IOC_READ or _IOC_WRITE flag
because it doesn't copy anything from/to userspace to access the
argument.

Fixes: 54ebbfb160 ("tty: add TIOCGPTPEER ioctl")
Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Acked-by: Aleksa Sarai <asarai@suse.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-17 17:04:41 +02:00
Linus Torvalds 89cbec71fe Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull uacess-unaligned removal from Al Viro:
 "That stuff had just one user, and an exotic one, at that - binfmt_flat
  on arm and m68k"

* 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  kill {__,}{get,put}_user_unaligned()
  binfmt_flat: flat_{get,put}_addr_from_rp() should be able to fail
2017-07-15 11:17:52 -07:00
Linus Torvalds 568d135d33 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "Boston platform support:
   - Document DT bindings
   - Add CLK driver for board clocks

  CM:
   - Avoid per-core locking with CM3 & higher
   - WARN on attempt to lock invalid VP, not BUG

  CPS:
   - Select CONFIG_SYS_SUPPORTS_SCHED_SMT for MIPSr6
   - Prevent multi-core with dcache aliasing
   - Handle cores not powering down more gracefully
   - Handle spurious VP starts more gracefully

  DSP:
   - Add lwx & lhx missaligned access support

  eBPF:
   - Add MIPS support along with many supporting change to add the
     required infrastructure

  Generic arch code:
   - Misc sysmips MIPS_ATOMIC_SET fixes
   - Drop duplicate HAVE_SYSCALL_TRACEPOINTS
   - Negate error syscall return in trace
   - Correct forced syscall errors
   - Traced negative syscalls should return -ENOSYS
   - Allow samples/bpf/tracex5 to access syscall arguments for sane
     traces
   - Cleanup from old Kconfig options in defconfigs
   - Fix PREF instruction usage by memcpy for MIPS R6
   - Fix various special cases in the FPU eulation
   - Fix some special cases in MIPS16e2 support
   - Fix MIPS I ISA /proc/cpuinfo reporting
   - Sort MIPS Kconfig alphabetically
   - Fix minimum alignment requirement of IRQ stack as required by
     ABI / GCC
   - Fix special cases in the module loader
   - Perform post-DMA cache flushes on systems with MAARs
   - Probe the I6500 CPU
   - Cleanup cmpxchg and add support for 1 and 2 byte operations
   - Use queued read/write locks (qrwlock)
   - Use queued spinlocks (qspinlock)
   - Add CPU shared FTLB feature detection
   - Handle tlbex-tlbp race condition
   - Allow storing pgd in C0_CONTEXT for MIPSr6
   - Use current_cpu_type() in m4kc_tlbp_war()
   - Support Boston in the generic kernel

  Generic platform:
   - yamon-dt: Pull YAMON DT shim code out of SEAD-3 board
   - yamon-dt: Support > 256MB of RAM
   - yamon-dt: Use serial* rather than uart* aliases
   - Abstract FDT fixup application
   - Set RTC_ALWAYS_BCD to 0
   - Add a MAINTAINERS entry

  core kernel:
   - qspinlock.c: include linux/prefetch.h

  Loongson 3:
   - Add support

  Perf:
   - Add I6500 support

  SEAD-3:
   - Remove GIC timer from DT
   - Set interrupt-parent per-device, not at root node
   - Fix GIC interrupt specifiers

  SMP:
   - Skip IPI setup if we only have a single CPU

  VDSO:
   - Make comment match reality
   - Improvements to time code in VDSO"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (86 commits)
  locking/qspinlock: Include linux/prefetch.h
  MIPS: Fix MIPS I ISA /proc/cpuinfo reporting
  MIPS: Fix minimum alignment requirement of IRQ stack
  MIPS: generic: Support MIPS Boston development boards
  MIPS: DTS: img: Don't attempt to build-in all .dtb files
  clk: boston: Add a driver for MIPS Boston board clocks
  dt-bindings: Document img,boston-clock binding
  MIPS: Traced negative syscalls should return -ENOSYS
  MIPS: Correct forced syscall errors
  MIPS: Negate error syscall return in trace
  MIPS: Drop duplicate HAVE_SYSCALL_TRACEPOINTS select
  MIPS16e2: Provide feature overrides for non-MIPS16 systems
  MIPS: MIPS16e2: Report ASE presence in /proc/cpuinfo
  MIPS: MIPS16e2: Subdecode extended LWSP/SWSP instructions
  MIPS: MIPS16e2: Identify ASE presence
  MIPS: VDSO: Fix a mismatch between comment and preprocessor constant
  MIPS: VDSO: Add implementation of gettimeofday() fallback
  MIPS: VDSO: Add implementation of clock_gettime() fallback
  MIPS: VDSO: Fix conversions in do_monotonic()/do_monotonic_coarse()
  MIPS: Use current_cpu_type() in m4kc_tlbp_war()
  ...
2017-07-15 10:59:54 -07:00
Joe Perches b745fcb949 MIPS: SMP: move asmlinkage before return type
Make the code like the rest of the kernel.

Link: http://lkml.kernel.org/r/756d3fb543e981b9284e756fa27616725a354b28.1499284835.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12 16:26:04 -07:00
Michal Hocko 473738eb78 MIPS: do not use __GFP_REPEAT for order-0 request
Patch series "mm: give __GFP_REPEAT a better semantic".

The main motivation for the change is that the current implementation of
__GFP_REPEAT is not very much useful.

The documentation says:
 * __GFP_REPEAT: Try hard to allocate the memory, but the allocation attempt
 *   _might_ fail.  This depends upon the particular VM implementation.

It just fails to mention that this is true only for large (costly) high
order which has been the case since the flag was introduced.  A similar
semantic would be really helpful for smal orders as well, though,
because we have places where a failure with a specific fallback error
handling is preferred to a potential endless loop inside the page
allocator.

The earlier cleanup dropped __GFP_REPEAT usage for low (!costly) order
users so only those which might use larger orders have stayed.  One new
user added in the meantime is addressed in patch 1.

Let's rename the flag to something more verbose and use it for existing
users.  Semantic for those will not change.  Then implement low
(!costly) orders failure path which is hit after the page allocator is
about to invoke the oom killer.  With that we have a good counterpart
for __GFP_NORETRY and finally can tell try as hard as possible without
the OOM killer.

Xfs code already has an existing annotation for allocations which are
allowed to fail and we can trivially map them to the new gfp flag
because it will provide the semantic KM_MAYFAIL wants.  Christoph didn't
consider the new flag really necessary but didn't respond to the OOM
killer aspect of the change so I have kept the patch.  If this is still
seen as not really needed I can drop the patch.

kvmalloc will allow also !costly high order allocations to retry hard
before falling back to the vmalloc.

drm/i915 asked for the new semantic explicitly.

Memory migration code, especially for the memory hotplug, should back
off rather than invoking the OOM killer as well.

This patch (of 6):

Commit 3377e227af ("MIPS: Add 48-bit VA space (and 4-level page
tables) for 4K pages.") has added a new __GFP_REPEAT user but using this
flag doesn't really make any sense for order-0 request which is the case
here because PUD_ORDER is 0.  __GFP_REPEAT has historically effect only
on allocation requests with order > PAGE_ALLOC_COSTLY_ORDER.

This doesn't introduce any functional change.  This is a preparatory
patch for later work which renames the flag and redefines its semantic.

Link: http://lkml.kernel.org/r/20170623085345.11304-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alex Belits <alex.belits@cavium.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: NeilBrown <neilb@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12 16:26:03 -07:00
Maciej W. Rozycki e5f5a5b06e MIPS: Fix MIPS I ISA /proc/cpuinfo reporting
Correct a commit 515a6393db ("MIPS: kernel: proc: Add MIPS R6 support
to /proc/cpuinfo") regression that caused MIPS I systems to show no ISA
levels supported in /proc/cpuinfo, e.g.:

system type		: Digital DECstation 2100/3100
machine			: Unknown
processor		: 0
cpu model		: R3000 V2.0  FPU V2.0
BogoMIPS		: 10.69
wait instruction	: no
microsecond timers	: no
tlb_entries		: 64
extra interrupt vector	: no
hardware watchpoint	: no
isa			:
ASEs implemented	:
shadow register sets	: 1
kscratch registers	: 0
package			: 0
core			: 0
VCED exceptions		: not available
VCEI exceptions		: not available

and similarly exclude `mips1' from the ISA list for any processors below
MIPSr1.  This is because the condition to show `mips1' on has been made
`cpu_has_mips_r1' rather than newly-introduced `cpu_has_mips_1'.  Use
the correct condition then.

Fixes: 515a6393db ("MIPS: kernel: proc: Add MIPS R6 support to /proc/cpuinfo")
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org # 3.19+
Patchwork: https://patchwork.linux-mips.org/patch/16758/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:50 +02:00
Matt Redfearn 5fdc66e046 MIPS: Fix minimum alignment requirement of IRQ stack
Commit db8466c581 ("MIPS: IRQ Stack: Unwind IRQ stack onto task
stack") erroneously set the initial stack pointer of the IRQ stack to a
value with a 4 byte alignment. The MIPS32 ABI requires that the minimum
stack alignment is 8 byte, and the MIPS64 ABIs(n32/n64) require 16 byte
minimum alignment. Fix IRQ_STACK_START such that it leaves space for the
dummy stack frame (containing interrupted task kernel stack pointer)
while also meeting minimum alignment requirements.

Fixes: db8466c581 ("MIPS: IRQ Stack: Unwind IRQ stack onto task stack")
Reported-by: Darius Ivanauskas <dasilt@yahoo.com>
Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16760/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
Paul Burton 6e62a88802 MIPS: generic: Support MIPS Boston development boards
Add support for the MIPS Boston development board to generic kernels,
which essentially amounts to:

  - Adding the device tree source for the MIPS Boston board.

  - Adding a Kconfig fragment which enables the appropriate drivers for
    the MIPS Boston board.

With these changes in place generic kernels will support the board by
default, and kernels with only the drivers needed for Boston enabled can
be configured by setting BOARDS=boston during configuration. For
example:

  $ make ARCH=mips 64r6el_defconfig BOARDS=boston

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16485/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
Paul Burton 4d2804b7d7 MIPS: DTS: img: Don't attempt to build-in all .dtb files
When building a FIT image we may want the kernel to build multiple .dtb
files, but we don't want to build them all into the kernel binary as
object files since they'll instead be included in the FIT image.

Commit daa10170da ("MIPS: DTS: img: add device tree for Marduk board")
however created arch/mips/boot/dts/img/Makefile with a line that builds
any enabled .dtb files into the kernel. Remove this & build the
pistachio object specifically, in preparation for adding .dtb targets
which we don't want to build into the kernel.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16484/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
James Hogan 828db212bf MIPS: Traced negative syscalls should return -ENOSYS
If a negative system call number is used when system call tracing is
enabled, syscall_trace_enter() will return that negative system call
number without having written the return value and error flag into the
pt_regs.

The caller then treats it as a cancelled system call and assumes that
the return value and error flag are already written, leaving the
negative system call number in the return register ($v0), and the 4th
system call argument in the error register ($a3).

Add a special case to detect this at the end of syscall_trace_enter(),
to set the return value to error -ENOSYS when this happens.

Fixes: d218af7849 ("MIPS: scall: Always run the seccomp syscall filters")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16653/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
James Hogan becddba9f8 MIPS: Correct forced syscall errors
When the system call return value is forced to be an error (for example
due to SECCOMP_RET_ERRNO), syscall_set_return_value() puts the error
code in the return register $v0 and -1 in the error register $a3.

However normally executed system calls put 1 in the error register
rather than -1, so fix syscall_set_return_value() to be consistent with
that.

I don't anticipate that anything would have been broken by this, since
the most natural way to check the error register on MIPS would be a
conditional branch if error register is [not] equal to zero (bnez or
beqz).

Fixes: 1d7bf993e0 ("MIPS: ftrace: Add support for syscall tracepoints.")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16652/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
James Hogan 4f32a39d49 MIPS: Negate error syscall return in trace
The sys_exit trace event takes a single return value for the system
call, which MIPS passes the value of the $v0 (result) register, however
MIPS returns positive error codes in $v0 with $a3 specifying that $v0
contains an error code. As a result erroring system calls are traced
returning positive error numbers that can't always be distinguished from
success.

Use regs_return_value() to negate the error code if $a3 is set.

Fixes: 1d7bf993e0 ("MIPS: ftrace: Add support for syscall tracepoints.")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.13+
Patchwork: https://patchwork.linux-mips.org/patch/16651/
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
James Hogan 54eca7eccc MIPS: Drop duplicate HAVE_SYSCALL_TRACEPOINTS select
MIPS selects HAVE_SYSCALL_TRACEPOINTS twice. The first was added back in
v3.13 by commit 2d7bf993e073 ("MIPS: ftrace: Add support for syscall
tracepoints."), but then a second redundant one was added in v4.2 by
commit fb59e394c3 ("MIPS: ftrace: Enable support for syscall
tracepoints.").

Drop the duplicate select.

Fixes: fb59e394c3 ("MIPS: ftrace: Enable support for syscall tracepoints.")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16654/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
Maciej W. Rozycki 65ae8d2621 MIPS16e2: Provide feature overrides for non-MIPS16 systems
Hardcode the absence of the MIPS16e2 ASE for all the systems that do so
for the MIPS16 ASE already, providing for code to be optimized away.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16097/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 14:13:06 +02:00
Maciej W. Rozycki 92ecd19a7e MIPS: MIPS16e2: Report ASE presence in /proc/cpuinfo
Only now that both feature determination and unaligned emulation is in
place add reporting to /proc/cpuinfo, so that the presence of "mips16e2"
there not only indicates our recognition of the hardware feature, but
correct unaligned emulation as well.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16757/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-11 13:48:49 +02:00
Thomas Meyer a94c33dd1f lib/extable.c: use bsearch() library function in search_extable()
[thomas@m3y3r.de: v3: fix arch specific implementations]
  Link: http://lkml.kernel.org/r/1497890858.12931.7.camel@m3y3r.de
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10 16:32:35 -07:00
Linus Torvalds f263fbb8d6 pci-v4.13-changes
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJZYAFUAAoJEFmIoMA60/r8cFQP/A4fpdjhd42WRNQXGTpZieop
 i40lBQtGdBn/UY97U6BoutcS1ygDi9OiSzg+IR6I90iMgidqyUHFhe4hGWgVHD2g
 Tg0KLzd+lKKfQ6Gqt1P6t4dLGLvyEj5NUbCeFE4XYODAUkkiBaOndax6DK1GvU54
 Vjuj63rHtMKFR/tG/4iFTigObqyI8QE6O9JVxwuvIyEX6RXKbJe+wkulv5taSnWt
 Ne94950i10MrELtNreVdi8UbCbXiqjg0r5sKI/WTJ7Bc7WsC7X5PhWlhcNrbHyBT
 Ivhoypkui3Ky8gvwWqL0KBG+cRp8prBXAdabrD9wRbz0TKnfGI6pQzseCGRnkE6T
 mhlSJpsSNIHaejoCjk93yPn5oRiTNtPMdVhMpEQL9V/crVRGRRmbd7v2TYvpMHVR
 JaPZ8bv+C2aBTY8uL3/v/rgrjsMKOYFeaxeNklpErxrknsbgb6BgubmeZXDvTBVv
 YUIbAkvveonUKisv+kbD8L7tp1+jdbRUT0AikS0NVgAJQhfArOmBcDpTL9YC51vE
 feFhkVx4A32vvOm7Zcg9A7IMXNjeSfccKGw3dJOAvzgDODuJiaCG6S0o7B5Yngze
 axMi87ixGT4QM98z/I4MC8E9rDrJdIitlpvb6ZBgiLzoO3kmvsIZZKt8UxWqf5r8
 w3U2HoyKH13Qbkn1xkum
 =mkyb
 -----END PGP SIGNATURE-----

Merge tag 'pci-v4.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

  - add sysfs max_link_speed/width, current_link_speed/width (Wong Vee
    Khee)

  - make host bridge IRQ mapping much more generic (Matthew Minter,
    Lorenzo Pieralisi)

  - convert most drivers to pci_scan_root_bus_bridge() (Lorenzo
    Pieralisi)

  - mutex sriov_configure() (Jakub Kicinski)

  - mutex pci_error_handlers callbacks (Christoph Hellwig)

  - split ->reset_notify() into ->reset_prepare()/reset_done()
    (Christoph Hellwig)

  - support multiple PCIe portdrv interrupts for MSI as well as MSI-X
    (Gabriele Paoloni)

  - allocate MSI/MSI-X vector for Downstream Port Containment (Gabriele
    Paoloni)

  - fix MSI IRQ affinity pre/post/min_vecs issue (Michael Hernandez)

  - test INTx masking during enumeration, not at run-time (Piotr Gregor)

  - avoid using device_may_wakeup() for runtime PM (Rafael J. Wysocki)

  - restore the status of PCI devices across hibernation (Chen Yu)

  - keep parent resources that start at 0x0 (Ard Biesheuvel)

  - enable ECRC only if device supports it (Bjorn Helgaas)

  - restore PRI and PASID state after Function-Level Reset (CQ Tang)

  - skip DPC event if device is not present (Keith Busch)

  - check domain when matching SMBIOS info (Sujith Pandel)

  - mark Intel XXV710 NIC INTx masking as broken (Alex Williamson)

  - avoid AMD SB7xx EHCI USB wakeup defect (Kai-Heng Feng)

  - work around long-standing Macbook Pro poweroff issue (Bjorn Helgaas)

  - add Switchtec "running" status flag (Logan Gunthorpe)

  - fix dra7xx incorrect RW1C IRQ register usage (Arvind Yadav)

  - modify xilinx-nwl IRQ chip for legacy interrupts (Bharat Kumar
    Gogada)

  - move VMD SRCU cleanup after bus, child device removal (Jon Derrick)

  - add Faraday clock handling (Linus Walleij)

  - configure Rockchip MPS and reorganize (Shawn Lin)

  - limit Qualcomm TLP size to 2K (hardware issue) (Srinivas Kandagatla)

  - support Tegra MSI 64-bit addressing (Thierry Reding)

  - use Rockchip normal (not privileged) register bank (Shawn Lin)

  - add HiSilicon Kirin SoC PCIe controller driver (Xiaowei Song)

  - add Sigma Designs Tango SMP8759 PCIe controller driver (Marc
    Gonzalez)

  - add MediaTek PCIe host controller support (Ryder Lee)

  - add Qualcomm IPQ4019 support (John Crispin)

  - add HyperV vPCI protocol v1.2 support (Jork Loeser)

  - add i.MX6 regulator support (Quentin Schulz)

* tag 'pci-v4.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (113 commits)
  PCI: tango: Add Sigma Designs Tango SMP8759 PCIe host bridge support
  PCI: Add DT binding for Sigma Designs Tango PCIe controller
  PCI: rockchip: Use normal register bank for config accessors
  dt-bindings: PCI: Add documentation for MediaTek PCIe
  PCI: Remove __pci_dev_reset() and pci_dev_reset()
  PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done()
  PCI: xilinx: Make of_device_ids const
  PCI: xilinx-nwl: Modify IRQ chip for legacy interrupts
  PCI: vmd: Move SRCU cleanup after bus, child device removal
  PCI: vmd: Correct comment: VMD domains start at 0x10000, not 0x1000
  PCI: versatile: Add local struct device pointers
  PCI: tegra: Do not allocate MSI target memory
  PCI: tegra: Support MSI 64-bit addressing
  PCI: rockchip: Use local struct device pointer consistently
  PCI: rockchip: Check for clk_prepare_enable() errors during resume
  MAINTAINERS: Remove Wenrui Li as Rockchip PCIe driver maintainer
  PCI: rockchip: Configure RC's MPS setting
  PCI: rockchip: Reconfigure configuration space header type
  PCI: rockchip: Split out rockchip_pcie_cfg_configuration_accesses()
  PCI: rockchip: Move configuration accesses into rockchip_pcie_cfg_atu()
  ...
2017-07-08 15:51:57 -07:00
Linus Torvalds c7d28eca1d This is the bulk of GPIO changes for the v4.13 series:
Core:
 - Export add/remove for lookup tables so that modules can export GPIO
   descriptor tables.
 - Handle GPIO sleep states: it is now possible to flag that a GPIO line
   may loose its state during suspend/resume of the system to save
   power. This is used in the Wolfson Micro Arizona driver.
 - ACPI-based GPIO was tightened up a lot around the edges.
 - Use bitmap_fill() to speed up a loop.
 
 New drivers:
 - Exar XRA1403 SPI-based GPIO.
 - MVEBU driver now supports Armada 7K and 8K.
 - LP87565 PMIC GPIO.
 - Renesas R-CAR R8A7743 (RZ/G1M).
 - The new IOT2040 8250 serial/GPIO also comes in through this
   changeset.
 
 Substantial driver changes:
 - Seriously fix the Exar 8250 GPIO portions to work.
 - The MCP23S08 was moved out to a pin control driver.
 - Convert MEVEBU to use regmap for register access.
 - Drop Vulcan support from the Broadcom driver.
 - Serious cleanup and improvement of the mockup driver, giving us a
   better test coverage.
 
 Misc:
 - Lots of janitorial clean up.
 - A bunch of documentation fixes.
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJZX1MjAAoJEEEQszewGV1zEYUQALFsjJH7D2mRN4TSSEeVAcYr
 Uz52uupsou8tgW0IupRb/khO+V6zgd7j+kHDJLMxX+rCTw3pTq5+XGyi5+iNpxof
 TIIT1XBx4eq7Q/n4nWdGodHbHN9BXw7cGsNmTb1TS/G/6h1wOKxfzjvUNhDAC+2v
 idPy6B5G+WrDsYpBtTWlKHKQKVqbUlhLFyJYoglzqIeM5L9Ry/UoZ6sGleho3hKn
 Vlg/hMtkCexnVO9zopBe5CuEfseLrkcCgCvtQ713egzVXApryp4hqm3Xti20Ntgy
 OxnKhmVyloqd0kU0qLSpvDAf7B1invbHHbeZsag6wluTMrxgUYJONuonrqGeGiwB
 FBDtw9SGn2GlEXcs7sg8ANmAyr2XxxezKXD9XLBL5jadNB2KCY5yKMv1IK3VnYdq
 gEpFAiZ5cmlpZxIXqlyeZP6LKHNTci4amb33x1I/ghH2BTkGQ/3E3anXEbPNWF8G
 DDE6nrSgU0oQcNqRHyZaWNZpUIz4aFUgJtOEO4lYYP4+VzYSKTdrHseTiiJ91J7E
 WBz9p5JvSnB22+60RhyTAPjVjXgWa30nidf7WGCK0UHiIYffihCxGZRTlrhoEEUB
 fXgveJpqxLopYvxpUxi1OqlPYYo7zKRF5BzHsjKMpdVYXfdMdvs7eq2g/X889i1D
 WpbE9LyAH9FY5BM8YjFX
 =TpW1
 -----END PGP SIGNATURE-----

Merge tag 'gpio-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.13 series.

  Some administrativa:

  I have a slew of 8250 serial patches and the new IOT2040 serial+GPIO
  driver coming in through this tree, along with a whole bunch of Exar
  8250 fixes. These are ACKed by Greg and also hit drivers/platform/*
  where they are ACKed by Andy Shevchenko.

  Speaking about drivers/platform/* there is also a bunch of ACPI stuff
  coming through that route, again ACKed by Andy.

  The MCP23S08 changes are coming in here as well. You already have the
  commits in your tree, so this is just a result of sharing an immutable
  branch between pin control and GPIO.

  Core:
   - Export add/remove for lookup tables so that modules can export GPIO
     descriptor tables.
   - Handle GPIO sleep states: it is now possible to flag that a GPIO
     line may loose its state during suspend/resume of the system to
     save power. This is used in the Wolfson Micro Arizona driver.
   - ACPI-based GPIO was tightened up a lot around the edges.
   - Use bitmap_fill() to speed up a loop.

  New drivers:
   - Exar XRA1403 SPI-based GPIO.
   - MVEBU driver now supports Armada 7K and 8K.
   - LP87565 PMIC GPIO.
   - Renesas R-CAR R8A7743 (RZ/G1M).
   - The new IOT2040 8250 serial/GPIO also comes in through this
     changeset.

  Substantial driver changes:
   - Seriously fix the Exar 8250 GPIO portions to work.
   - The MCP23S08 was moved out to a pin control driver.
   - Convert MEVEBU to use regmap for register access.
   - Drop Vulcan support from the Broadcom driver.
   - Serious cleanup and improvement of the mockup driver, giving us a
     better test coverage.

  Misc:
   - Lots of janitorial clean up.
   - A bunch of documentation fixes"

* tag 'gpio-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (70 commits)
  serial: exar: Add support for IOT2040 device
  gpio-exar/8250-exar: Make set of exported GPIOs configurable
  platform: Accept const properties
  serial: exar: Factor out platform hooks
  gpio-exar/8250-exar: Rearrange gpiochip parenthood
  gpio: exar: Fix iomap request
  gpio-exar/8250-exar: Do not even instantiate a GPIO device for Commtech cards
  serial: uapi: Add support for bus termination
  gpio: rcar: Add R8A7743 (RZ/G1M) support
  gpio: gpio-wcove: Fix GPIO control register offset calculation
  gpio: lp87565: Add support for GPIO
  gpio: dwapb: fix missing first irq for edgeboth irq type
  MAINTAINERS: Take maintainership for GPIO ACPI support
  gpio: exar: Fix reading of directions and values
  gpio: exar: Allocate resources on behalf of the platform device
  gpio-exar/8250-exar: Fix passing in of parent PCI device
  gpio: mockup: use devm_kcalloc() where applicable
  gpio: mockup: add myself as author
  gpio: mockup: improve the error message
  gpio: mockup: don't return magic numbers from probe()
  ...
2017-07-07 12:40:27 -07:00
Linus Torvalds dddd564dbb This time we've got one core change to introduce a bulk clk_get API,
some new clk drivers and updates for old ones. The diff is pretty
 spread out across a handful of different SoC clk drivers for Broadcom, TI,
 Qualcomm, Renesas, Rockchip, Samsung, and Allwinner, mostly due to the
 introduction of new drivers.
 
 Core:
  - New clk bulk get APIs
  - Clk divider APIs gained the ability to consider a different parent than
    the current one
 
 New Drivers:
  - Renesas r8a779{0,1,2,4} CPG/MSSR
  - TI Keystone SCI firmware controlled clks and OMAP4 clkctrl
  - Qualcomm IPQ8074 SoCs
  - Cortina Systems Gemini (SL3516/CS3516)
  - Rockchip rk3128 SoCs
  - Allwinner A83T clk control units
  - Broadcom Stingray SoCs
  - CPU clks for Mediatek MT8173/MT2701/MT7623 SoCs
 
 Removed Drivers:
  - Old non-DT version of the Realview clk driver
 
 Updates:
  - Renesas Kconfig/Makefile cleanups
  - Amlogic CEC EE clk support
  - Improved Armada 7K/8K cp110 clk support
  - Rockchip clk id exposing, critical clk markings
  - Samsung converted to clk_hw registration APIs
  - Fixes for Samsung exynos5420 audio clks
  - USB2 clks for Hisilicon hi3798cv200 SoC and video/camera clks for hi3660
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABCAAGBQJZXujtAAoJEK0CiJfG5JUl8vIQAKbcH3rX+CS4jrg7Hs2Ghnhn
 ZbTf7vZYa6K7iuL7JHITEScAQ8+l0Bl7eWSfJZRt4oUW3Jt4F+AIs8qBofZAWn4M
 m+kDHs/IfAUITZp/unM/ogFfVcboZObjAK/A2yyRVyMxRkIyyUb6r7SDVpCpGyxU
 1YDAdis2M3F5J9CGV/tpmobnksMUlCnJlI0OGtMUnvY6mDkf8Re89sayMnQ/1Mgp
 CL1YwnqZ0L6rT664IMo74bB7UNjXdMZsuCeITkU+hMVq4NMXErKCcn8lHvP9P+uP
 AoZ8bf9WaQ/CglGFeeFrNQGUf+tiTlYxlVvvNFXR5+rmhu/yKxNI67APaupeERVl
 jMISKAC/A+C1j6JVMCqjM3d75F47SzuZQuQY0ZD0DWoqP9PBzV6IyThHIqWrN5O4
 IceLmD8BrwW+h8bs2SIubIygOGMMqGhVi2XaAAWpmRke7JzmSFOOyE3YGPisaBAq
 EcIF2i2jJ6Ja4rClgfQKOsx25MOILsIp/sMU6iC7U1h4NDj8yP5A13n60U6DuZhu
 ttjN+bXugR81R+bWyzC6Zl/KXF83Ka3ZSJs+XblunPRGKt2q6Kj12HBspkWL1QjY
 aLEEg3fpI/ovQoTMXHj7/G1MD60rxoHCuOjBwSWEQBzA1MiHol+ab/mZKfPsy50C
 116G1XJgtgrLxE00iZ6K
 =Yar+
 -----END PGP SIGNATURE-----

Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This time we've got one core change to introduce a bulk clk_get API,
  some new clk drivers and updates for old ones. The diff is pretty
  spread out across a handful of different SoC clk drivers for Broadcom,
  TI, Qualcomm, Renesas, Rockchip, Samsung, and Allwinner, mostly due to
  the introduction of new drivers.

  Core:
   - New clk bulk get APIs
   - Clk divider APIs gained the ability to consider a different parent
     than the current one

  New Drivers:
   - Renesas r8a779{0,1,2,4} CPG/MSSR
   - TI Keystone SCI firmware controlled clks and OMAP4 clkctrl
   - Qualcomm IPQ8074 SoCs
   - Cortina Systems Gemini (SL3516/CS3516)
   - Rockchip rk3128 SoCs
   - Allwinner A83T clk control units
   - Broadcom Stingray SoCs
   - CPU clks for Mediatek MT8173/MT2701/MT7623 SoCs

  Removed Drivers:
   - Old non-DT version of the Realview clk driver

  Updates:
   - Renesas Kconfig/Makefile cleanups
   - Amlogic CEC EE clk support
   - Improved Armada 7K/8K cp110 clk support
   - Rockchip clk id exposing, critical clk markings
   - Samsung converted to clk_hw registration APIs
   - Fixes for Samsung exynos5420 audio clks
   - USB2 clks for Hisilicon hi3798cv200 SoC and video/camera clks for
     hi3660"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (147 commits)
  clk: gemini: Read status before using the value
  clk: scpi: error when clock fails to register
  clk: at91: Add sama5d2 suspend/resume
  gpio: dt-bindings: Add documentation for gpio controllers on Armada 7K/8K
  clk: keystone: TI_SCI_PROTOCOL is needed for clk driver
  clk: samsung: audss: Fix silent hang on Exynos4412 due to disabled EPLL
  clk: uniphier: provide NAND controller clock rate
  clk: hisilicon: add usb2 clocks for hi3798cv200 SoC
  clk: Add Gemini SoC clock controller
  clk: iproc: Remove __init marking on iproc_pll_clk_setup()
  clk: bcm: Add clocks for Stingray SOC
  dt-bindings: clk: Extend binding doc for Stingray SOC
  clk: mediatek: export cpu multiplexer clock for MT8173 SoCs
  clk: mediatek: export cpu multiplexer clock for MT2701/MT7623 SoCs
  clk: mediatek: add missing cpu mux causing Mediatek cpufreq can't work
  clk: renesas: cpg-mssr: Use of_device_get_match_data() helper
  clk: hi6220: add acpu clock
  clk: zx296718: export I2S mux clocks
  clk: imx7d: create clocks behind rawnand clock gate
  clk: hi3660: Set PPLL2 to 2880M
  ...
2017-07-07 12:26:13 -07:00
Linus Torvalds 9f45efb928 Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:

 - a few hotfixes

 - various misc updates

 - ocfs2 updates

 - most of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (108 commits)
  mm, memory_hotplug: move movable_node to the hotplug proper
  mm, memory_hotplug: drop CONFIG_MOVABLE_NODE
  mm, memory_hotplug: drop artificial restriction on online/offline
  mm: memcontrol: account slab stats per lruvec
  mm: memcontrol: per-lruvec stats infrastructure
  mm: memcontrol: use generic mod_memcg_page_state for kmem pages
  mm: memcontrol: use the node-native slab memory counters
  mm: vmstat: move slab statistics from zone to node counters
  mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare()
  mm/zswap.c: improve a size determination in zswap_frontswap_init()
  mm/zswap.c: delete an error message for a failed memory allocation in zswap_pool_create()
  mm/swapfile.c: sort swap entries before free
  mm/oom_kill: count global and memory cgroup oom kills
  mm: per-cgroup memory reclaim stats
  mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects
  mm: kmemleak: factor object reference updating out of scan_block()
  mm: kmemleak: slightly reduce the size of some structures on 64-bit architectures
  mm, mempolicy: don't check cpuset seqlock where it doesn't matter
  mm, cpuset: always use seqlock when changing task's nodemask
  mm, mempolicy: simplify rebinding mempolicies when updating cpusets
  ...
2017-07-06 22:27:08 -07:00
Linus Torvalds dc502142b6 Merge branch 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull user access str* updates from Al Viro:
 "uaccess str...() dead code removal"

* 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  s390 keyboard.c: don't open-code strndup_user()
  mips: get rid of unused __strnlen_user()
  get rid of unused __strncpy_from_user() instances
  kill strlen_user()
2017-07-06 22:07:44 -07:00
Linus Torvalds c856863988 Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc compat stuff updates from Al Viro:
 "This part is basically untangling various compat stuff. Compat
  syscalls moved to their native counterparts, getting rid of quite a
  bit of double-copying and/or set_fs() uses. A lot of field-by-field
  copyin/copyout killed off.

   - kernel/compat.c is much closer to containing just the
     copyin/copyout of compat structs. Not all compat syscalls are gone
     from it yet, but it's getting there.

   - ipc/compat_mq.c killed off completely.

   - block/compat_ioctl.c cleaned up; floppy compat ioctls moved to
     drivers/block/floppy.c where they belong. Yes, there are several
     drivers that implement some of the same ioctls. Some are m68k and
     one is 32bit-only pmac. drivers/block/floppy.c is the only one in
     that bunch that can be built on biarch"

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  mqueue: move compat syscalls to native ones
  usbdevfs: get rid of field-by-field copyin
  compat_hdio_ioctl: get rid of set_fs()
  take floppy compat ioctls to sodding floppy.c
  ipmi: get rid of field-by-field __get_user()
  ipmi: get COMPAT_IPMICTL_RECEIVE_MSG in sync with the native one
  rt_sigtimedwait(): move compat to native
  select: switch compat_{get,put}_fd_set() to compat_{get,put}_bitmap()
  put_compat_rusage(): switch to copy_to_user()
  sigpending(): move compat to native
  getrlimit()/setrlimit(): move compat to native
  times(2): move compat to native
  compat_{get,put}_bitmap(): use unsafe_{get,put}_user()
  fb_get_fscreeninfo(): don't bother with do_fb_ioctl()
  do_sigaltstack(): lift copying to/from userland into callers
  take compat_sys_old_getrlimit() to native syscall
  trim __ARCH_WANT_SYS_OLD_GETRLIMIT
2017-07-06 20:57:13 -07:00
Linus Torvalds f72e24a124 This is the first pull request for the new dma-mapping subsystem
In this new subsystem we'll try to properly maintain all the generic
 code related to dma-mapping, and will further consolidate arch code
 into common helpers.
 
 This pull request contains:
 
  - removal of the DMA_ERROR_CODE macro, replacing it with calls
    to ->mapping_error so that the dma_map_ops instances are
    more self contained and can be shared across architectures (me)
  - removal of the ->set_dma_mask method, which duplicates the
    ->dma_capable one in terms of functionality, but requires more
    duplicate code.
  - various updates for the coherent dma pool and related arm code
    (Vladimir)
  - various smaller cleanups (me)
 -----BEGIN PGP SIGNATURE-----
 
 iQI/BAABCAApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAlldmw0LHGhjaEBsc3Qu
 ZGUACgkQD55TZVIEUYOiKA/+Ln1mFLSf3nfTzIHa24Bbk8ZTGr0B8TD4Vmyyt8iG
 oO3AeaTLn3d6ugbH/uih/tPz8PuyXsdiTC1rI/ejDMiwMTSjW6phSiIHGcStSR9X
 VFNhmMFacp7QpUpvxceV0XZYKDViAoQgHeGdp3l+K5h/v4AYePV/v/5RjQPaEyOh
 YLbCzETO+24mRWdJxdAqtTW4ovYhzj6XsiJ+pAjlV0+SWU6m5L5E+VAPNi1vqv1H
 1O2KeCFvVYEpcnfL3qnkw2timcjmfCfeFAd9mCUAc8mSRBfs3QgDTKw3XdHdtRml
 LU2WuA5cpMrOdBO4mVra2plo8E2szvpB1OZZXoKKdCpK3VGwVpVHcTvClK2Ks/3B
 GDLieroEQNu2ZIUIdWXf/g2x6le3BcC9MmpkAhnGPqCZ7skaIBO5Cjpxm0zTJAPl
 PPY3CMBBEktAvys6DcudOYGixNjKUuAm5lnfpcfTEklFdG0AjhdK/jZOplAFA6w4
 LCiy0rGHM8ZbVAaFxbYoFCqgcjnv6EjSiqkJxVI4fu/Q7v9YXfdPnEmE0PJwCVo5
 +i7aCLgrYshTdHr/F3e5EuofHN3TDHwXNJKGh/x97t+6tt326QMvDKX059Kxst7R
 rFukGbrYvG8Y7yXwrSDbusl443ta0Ht7T1oL4YUoJTZp0nScAyEluDTmrH1JVCsT
 R4o=
 =0Fso
 -----END PGP SIGNATURE-----

Merge tag 'dma-mapping-4.13' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping infrastructure from Christoph Hellwig:
 "This is the first pull request for the new dma-mapping subsystem

  In this new subsystem we'll try to properly maintain all the generic
  code related to dma-mapping, and will further consolidate arch code
  into common helpers.

  This pull request contains:

   - removal of the DMA_ERROR_CODE macro, replacing it with calls to
     ->mapping_error so that the dma_map_ops instances are more self
     contained and can be shared across architectures (me)

   - removal of the ->set_dma_mask method, which duplicates the
     ->dma_capable one in terms of functionality, but requires more
     duplicate code.

   - various updates for the coherent dma pool and related arm code
     (Vladimir)

   - various smaller cleanups (me)"

* tag 'dma-mapping-4.13' of git://git.infradead.org/users/hch/dma-mapping: (56 commits)
  ARM: dma-mapping: Remove traces of NOMMU code
  ARM: NOMMU: Set ARM_DMA_MEM_BUFFERABLE for M-class cpus
  ARM: NOMMU: Introduce dma operations for noMMU
  drivers: dma-mapping: allow dma_common_mmap() for NOMMU
  drivers: dma-coherent: Introduce default DMA pool
  drivers: dma-coherent: Account dma_pfn_offset when used with device tree
  dma: Take into account dma_pfn_offset
  dma-mapping: replace dmam_alloc_noncoherent with dmam_alloc_attrs
  dma-mapping: remove dmam_free_noncoherent
  crypto: qat - avoid an uninitialized variable warning
  au1100fb: remove a bogus dma_free_nonconsistent call
  MAINTAINERS: add entry for dma mapping helpers
  powerpc: merge __dma_set_mask into dma_set_mask
  dma-mapping: remove the set_dma_mask method
  powerpc/cell: use the dma_supported method for ops switching
  powerpc/cell: clean up fixed mapping dma_ops initialization
  tile: remove dma_supported and mapping_error methods
  xen-swiotlb: remove xen_swiotlb_set_dma_mask
  arm: implement ->dma_supported instead of ->set_dma_mask
  mips/loongson64: implement ->dma_supported instead of ->set_dma_mask
  ...
2017-07-06 19:20:54 -07:00
Linus Torvalds c136b84393 PPC:
- Better machine check handling for HV KVM
 - Ability to support guests with threads=2, 4 or 8 on POWER9
 - Fix for a race that could cause delayed recognition of signals
 - Fix for a bug where POWER9 guests could sleep with interrupts pending.
 
 ARM:
 - VCPU request overhaul
 - allow timer and PMU to have their interrupt number selected from userspace
 - workaround for Cavium erratum 30115
 - handling of memory poisonning
 - the usual crop of fixes and cleanups
 
 s390:
 - initial machine check forwarding
 - migration support for the CMMA page hinting information
 - cleanups and fixes
 
 x86:
 - nested VMX bugfixes and improvements
 - more reliable NMI window detection on AMD
 - APIC timer optimizations
 
 Generic:
 - VCPU request overhaul + documentation of common code patterns
 - kvm_stat improvements
 
 There is a small conflict in arch/s390 due to an arch-wide field rename.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJZW4XTAAoJEL/70l94x66DkhMH/izpk54KI17PtyQ9VYI2sYeZ
 BWK6Kl886g3ij4pFi3pECqjDJzWaa3ai+vFfzzpJJ8OkCJT5Rv4LxC5ERltVVmR8
 A3T1I/MRktSC0VJLv34daPC2z4Lco/6SPipUpPnL4bE2HATKed4vzoOjQ3tOeGTy
 dwi7TFjKwoVDiM7kPPDRnTHqCe5G5n13sZ49dBe9WeJ7ttJauWqoxhlYosCGNPEj
 g8ZX8+cvcAhVnz5uFL8roqZ8ygNEQq2mgkU18W8ZZKuiuwR0gdsG0gSBFNTdwIMK
 NoreRKMrw0+oLXTIB8SZsoieU6Qi7w3xMAMabe8AJsvYtoersugbOmdxGCr1lsA=
 =OD7H
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "PPC:
   - Better machine check handling for HV KVM
   - Ability to support guests with threads=2, 4 or 8 on POWER9
   - Fix for a race that could cause delayed recognition of signals
   - Fix for a bug where POWER9 guests could sleep with interrupts pending.

  ARM:
   - VCPU request overhaul
   - allow timer and PMU to have their interrupt number selected from userspace
   - workaround for Cavium erratum 30115
   - handling of memory poisonning
   - the usual crop of fixes and cleanups

  s390:
   - initial machine check forwarding
   - migration support for the CMMA page hinting information
   - cleanups and fixes

  x86:
   - nested VMX bugfixes and improvements
   - more reliable NMI window detection on AMD
   - APIC timer optimizations

  Generic:
   - VCPU request overhaul + documentation of common code patterns
   - kvm_stat improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (124 commits)
  Update my email address
  kvm: vmx: allow host to access guest MSR_IA32_BNDCFGS
  x86: kvm: mmu: use ept a/d in vmcs02 iff used in vmcs12
  kvm: x86: mmu: allow A/D bits to be disabled in an mmu
  x86: kvm: mmu: make spte mmio mask more explicit
  x86: kvm: mmu: dead code thanks to access tracking
  KVM: PPC: Book3S: Fix typo in XICS-on-XIVE state saving code
  KVM: PPC: Book3S HV: Close race with testing for signals on guest entry
  KVM: PPC: Book3S HV: Simplify dynamic micro-threading code
  KVM: x86: remove ignored type attribute
  KVM: LAPIC: Fix lapic timer injection delay
  KVM: lapic: reorganize restart_apic_timer
  KVM: lapic: reorganize start_hv_timer
  kvm: nVMX: Check memory operand to INVVPID
  KVM: s390: Inject machine check into the nested guest
  KVM: s390: Inject machine check into the guest
  tools/kvm_stat: add new interactive command 'b'
  tools/kvm_stat: add new command line switch '-i'
  tools/kvm_stat: fix error on interactive command 'g'
  KVM: SVM: suppress unnecessary NMI singlestep on GIF=0 and nested exit
  ...
2017-07-06 18:38:31 -07:00
Punit Agrawal 7868a2087e mm/hugetlb: add size parameter to huge_pte_offset()
A poisoned or migrated hugepage is stored as a swap entry in the page
tables.  On architectures that support hugepages consisting of
contiguous page table entries (such as on arm64) this leads to ambiguity
in determining the page table entry to return in huge_pte_offset() when
a poisoned entry is encountered.

Let's remove the ambiguity by adding a size parameter to convey
additional information about the requested address.  Also fixup the
definition/usage of huge_pte_offset() throughout the tree.

Link: http://lkml.kernel.org/r/20170522133604.11392-4-punit.agrawal@arm.com
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Steve Capper <steve.capper@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: James Hogan <james.hogan@imgtec.com> (odd fixer:METAG ARCHITECTURE)
Cc: Ralf Baechle <ralf@linux-mips.org> (supporter:MIPS)
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-06 16:24:34 -07:00
Linus Torvalds ac7b75966c This is the big bulk of pin control changes for the v4.13 series:
Core:
 
 - The documentation is moved over to RST.
 - We now have agreed bindings for enabling input and output
   buffers without actually enabling input and/or output on a
   pin. We are chiseling out some details of pin control
   electronics.
 
 New drivers:
 
 - ZTE ZX
 - Renesas RZA1
 - MIPS Ingenic JZ47xx: also switch over existing drivers in the
   tree to use this pin controller and consolidate earlier
   spread out code.
 - Microschip MCP23S08: this driver is migrated from the GPIO
   subsystem and totally rewritten to use proper pin control.
   All users are switched over.
 
 New subdrivers:
 
 - Renesas R8A7743 and R8A7745.
 - Allwinner Sunxi A83T R_PIO.
 - Marvell MVEBU Armada CP110 and AP806.
 - Intel Cannon Lake PCH.
 - Qualcomm IPQ8074.
 
 Notable improvements:
 
 - IRQ support on the Marvell MVEBU Armada 37xx.
 - Meson driver supports HDMI CEC, AO, I2S, SPDIF and PWM.
 - Rockchip driver now supports iomux-route switching for
   RK3228, RK3328 and RK3399.
 - Rockchip A10 and A20 are merged into a single driver.
 - STM32 has improved GPIO support.
 - Samsung Exynos drivers are split per ARMv7 and ARMv8.
 - Marvell MVEBU is converted to use regmap for register
   access.
 
 Maintenance:
 
 - Several Renesas SH-PFC refactorings and updates.
 - Serious code size cut for Mediatek MT7623.
 - Misc janitorial and MAINTAINERS fixes.
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJZXeUhAAoJEEEQszewGV1zcl8QAMZ6To2JBQeK0Qi+pik9ZbW7
 CvnIFT7E4X45tstwFNKIgdQ1C/IcfzKpPSUDRUqi2nWJiWcuYgn3wQwQ5qbkGtaG
 vne0KVChgFGkT2SwycUZy11JxuP75U73e27BwAruxHhwWo5PesUOjjkmUtMqdbNQ
 VAwx6KoCBx1VBlb0uscbSSqFyAspdyeAHPEvSj4IpsqRZzT7YFqDm4C+uTnwavPx
 ZLoTji0HCpPIAo4C8JUAvweWbpxMC1IMdfm9jRkZ4rR/gTFQXvK+9ssI6lxSK6a6
 RiCJaAE6wQHKYm4LL0pGbW+aMGWRRRp8MERNmg8NgnWONcfCxYowoOYeYLeqPhAg
 kWkFHlmjpfo/A79V6tmN32vCpeQd34XGCetMpI93TuZ42olniD2Puv6RscVaSP3T
 3mIqydX9BY8iAviyMaLcHQeChaNdhLQi+AVjrn1VQjdkWn0C7uR++JznsyaxaI+S
 cVadl6k8H393R1Qdvh3JdoL0owsntQxWVWCbR6fyAZTHHiLGEyvL1ceO/rbpSRrn
 c8Ghk5s7f3DFltn7yWiV4k3KVhDPb5iK2dYP9uGCgqbigHWqlcB5PanRu1aGSFov
 h/1VFEMagNCXQCrgGcIfmkEiwW3SqUsFaaoMLhlYpNb/ON3ihGgsZYiczWSj8l4L
 yfCOoszuEsVkV1dFNAjA
 =dUFL
 -----END PGP SIGNATURE-----

Merge tag 'pinctrl-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the big bulk of pin control changes for the v4.13 series:

  Core:
   - The documentation is moved over to RST.
   - We now have agreed bindings for enabling input and output buffers
     without actually enabling input and/or output on a pin. We are
     chiseling out some details of pin control electronics.

  New drivers:
   - ZTE ZX
   - Renesas RZA1
   - MIPS Ingenic JZ47xx: also switch over existing drivers in the tree
     to use this pin controller and consolidate earlier spread out code.
   - Microschip MCP23S08: this driver is migrated from the GPIO
     subsystem and totally rewritten to use proper pin control. All
     users are switched over.

  New subdrivers:
   - Renesas R8A7743 and R8A7745.
   - Allwinner Sunxi A83T R_PIO.
   - Marvell MVEBU Armada CP110 and AP806.
   - Intel Cannon Lake PCH.
   - Qualcomm IPQ8074.

  Notable improvements:
   - IRQ support on the Marvell MVEBU Armada 37xx.
   - Meson driver supports HDMI CEC, AO, I2S, SPDIF and PWM.
   - Rockchip driver now supports iomux-route switching for RK3228,
     RK3328 and RK3399.
   - Rockchip A10 and A20 are merged into a single driver.
   - STM32 has improved GPIO support.
   - Samsung Exynos drivers are split per ARMv7 and ARMv8.
   - Marvell MVEBU is converted to use regmap for register access.

  Maintenance:
   - Several Renesas SH-PFC refactorings and updates.
   - Serious code size cut for Mediatek MT7623.
   - Misc janitorial and MAINTAINERS fixes"

* tag 'pinctrl-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (137 commits)
  pinctrl: samsung: Remove bogus irq_[un]mask from resource management
  pinctrl: rza1: make structures rza1_gpiochip_template and rza1_pinmux_ops static
  pinctrl: rza1: Remove unneeded wrong check for wrong variable
  pinctrl: qcom: Add ipq8074 pinctrl driver
  pinctrl: freescale: imx7d: make of_device_ids const.
  pinctrl: DT: extend the pinmux property to support integers array
  pinctrl: generic: Add output-enable property
  pinctrl: armada-37xx: Fix number of pin in sdio_sb
  pinctrl: armada-37xx: Fix uart2 group selection register mask
  pinctrl: bcm2835: Avoid warning from __irq_do_set_handler
  pinctrl: sh-pfc: r8a7795: Add PWM support
  MAINTAINERS: Add Qualcomm pinctrl drivers section
  arm: dts: dt-bindings: Add Renesas RZ/A1 pinctrl header
  dt-bindings: pinctrl: Add RZ/A1 bindings doc
  pinctrl: Renesas RZ/A1 pin and gpio controller
  pinctrl: sh-pfc: r8a7792: Add SCIF1 and SCIF2 pin groups
  pinctrl.txt: move it to the driver-api book
  pinctrl: ingenic: checking for NULL instead of IS_ERR()
  pinctrl: uniphier: fix WARN_ON() of pingroups dump on LD20
  pinctrl: uniphier: fix WARN_ON() of pingroups dump on LD11
  ...
2017-07-06 11:38:59 -07:00
Linus Torvalds 5518b69b76 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Reasonably busy this cycle, but perhaps not as busy as in the 4.12
  merge window:

   1) Several optimizations for UDP processing under high load from
      Paolo Abeni.

   2) Support pacing internally in TCP when using the sch_fq packet
      scheduler for this is not practical. From Eric Dumazet.

   3) Support mutliple filter chains per qdisc, from Jiri Pirko.

   4) Move to 1ms TCP timestamp clock, from Eric Dumazet.

   5) Add batch dequeueing to vhost_net, from Jason Wang.

   6) Flesh out more completely SCTP checksum offload support, from
      Davide Caratti.

   7) More plumbing of extended netlink ACKs, from David Ahern, Pablo
      Neira Ayuso, and Matthias Schiffer.

   8) Add devlink support to nfp driver, from Simon Horman.

   9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa
      Prabhu.

  10) Add stack depth tracking to BPF verifier and use this information
      in the various eBPF JITs. From Alexei Starovoitov.

  11) Support XDP on qed device VFs, from Yuval Mintz.

  12) Introduce BPF PROG ID for better introspection of installed BPF
      programs. From Martin KaFai Lau.

  13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann.

  14) For loads, allow narrower accesses in bpf verifier checking, from
      Yonghong Song.

  15) Support MIPS in the BPF selftests and samples infrastructure, the
      MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David
      Daney.

  16) Support kernel based TLS, from Dave Watson and others.

  17) Remove completely DST garbage collection, from Wei Wang.

  18) Allow installing TCP MD5 rules using prefixes, from Ivan
      Delalande.

  19) Add XDP support to Intel i40e driver, from Björn Töpel

  20) Add support for TC flower offload in nfp driver, from Simon
      Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub
      Kicinski, and Bert van Leeuwen.

  21) IPSEC offloading support in mlx5, from Ilan Tayari.

  22) Add HW PTP support to macb driver, from Rafal Ozieblo.

  23) Networking refcount_t conversions, From Elena Reshetova.

  24) Add sock_ops support to BPF, from Lawrence Brako. This is useful
      for tuning the TCP sockopt settings of a group of applications,
      currently via CGROUPs"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits)
  net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap
  dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap
  cxgb4: Support for get_ts_info ethtool method
  cxgb4: Add PTP Hardware Clock (PHC) support
  cxgb4: time stamping interface for PTP
  nfp: default to chained metadata prepend format
  nfp: remove legacy MAC address lookup
  nfp: improve order of interfaces in breakout mode
  net: macb: remove extraneous return when MACB_EXT_DESC is defined
  bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case
  bpf: fix return in load_bpf_file
  mpls: fix rtm policy in mpls_getroute
  net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_route.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t
  net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t
  ...
2017-07-05 12:31:59 -07:00
Maciej W. Rozycki f3235d3207 MIPS: MIPS16e2: Subdecode extended LWSP/SWSP instructions
Implement extended LWSP/SWSP instruction subdecoding for the purpose of
unaligned GP-relative memory access emulation.

With the introduction of the MIPS16e2 ASE[1] the previously must-be-zero
3-bit field at bits 7..5 of the extended encodings of the instructions
selected with the LWSP and SWSP major opcodes has become a `sel' field,
acting as an opcode extension for additional operations.  In both cases
the `sel' value of 0 has retained the original operation, that is:

	LW	rx, offset(sp)

and:

	SW	rx, offset(sp)

for LWSP and SWSP respectively.  In hardware predating the MIPS16e2 ASE
other values may or may not have been decoded, architecturally yielding
unpredictable results, and in our unaligned memory access emulation we
have treated the 3-bit field as a don't-care, that is effectively making
all the possible encodings of the field alias to the architecturally
defined encoding of 0.

For the non-zero values of the `sel' field the MIPS16e2 ASE has in
particular defined these GP-relative operations:

	LW	rx, offset(gp)		# sel = 1
	LH	rx, offset(gp)		# sel = 2
	LHU	rx, offset(gp)		# sel = 4

and

	SW	rx, offset(gp)		# sel = 1
	SH	rx, offset(gp)		# sel = 2

for LWSP and SWSP respectively, which will trap with an Address Error
exception if the effective address calculated is not naturally-aligned
for the operation requested.  These operations have been selected for
unaligned access emulation, for consistency with the corresponding
regular MIPS and microMIPS operations.

For other non-zero values of the `sel' field the MIPS16e2 ASE has
defined further operations, which however either never trap with an
Address Error exception, such as LWL or GP-relative SB, or are not
supposed to be emulated, such as LL or SC.  These operations have been
selected to exclude from unaligned access emulation, should an Address
Error exception ever happen with them.

Subdecode the `sel' field in unaligned access emulation then for the
extended encodings of the instructions selected with the LWSP and SWSP
major opcodes, whenever support for the MIPS16e2 ASE has been detected
in hardware, and either emulate the operation requested or send SIGBUS
to the originating process, according to the selection described above.
For hardware implementing the MIPS16 ASE, however lacking MIPS16e2 ASE
support retain the original interpretation of the `sel' field.

The effects of this change are illustrated with the following user
program:

$ cat mips16e2-test.c
#include <inttypes.h>
#include <stdio.h>

int main(void)
{
	int64_t scratch[16] = { 0 };
	int32_t *tmp0, *tmp1, *tmp2;
	int i;

	scratch[0] = 0xc8c7c6c5c4c3c2c1;
	scratch[1] = 0xd0cfcecdcccbcac9;

	asm volatile(
		"move	%0, $sp\n\t"
		"move	%1, $gp\n\t"
		"move	$sp, %4\n\t"
		"addiu	%2, %4, 8\n\t"
		"move	$gp, %2\n\t"

		"lw	%2, 2($sp)\n\t"
		"sw	%2, 16(%4)\n\t"
		"lw	%2, 2($gp)\n\t"
		"sw	%2, 24(%4)\n\t"

		"lw	%2, 1($sp)\n\t"
		"sw	%2, 32(%4)\n\t"
		"lh	%2, 1($gp)\n\t"
		"sw	%2, 40(%4)\n\t"

		"lw	%2, 3($sp)\n\t"
		"sw	%2, 48(%4)\n\t"
		"lhu	%2, 3($gp)\n\t"
		"sw	%2, 56(%4)\n\t"

		"lw	%2, 0(%4)\n\t"
		"sw	%2, 66($sp)\n\t"
		"lw	%2, 8(%4)\n\t"
		"sw	%2, 82($gp)\n\t"

		"lw	%2, 0(%4)\n\t"
		"sw	%2, 97($sp)\n\t"
		"lw	%2, 8(%4)\n\t"
		"sh	%2, 113($gp)\n\t"

		"move	$gp, %1\n\t"
		"move	$sp, %0"
		: "=&d" (tmp0), "=&d" (tmp1), "=&d" (tmp2), "=m" (scratch)
		: "d" (scratch));

	for (i = 0; i < sizeof(scratch) / sizeof(*scratch); i += 2)
		printf("%016" PRIx64 "\t%016" PRIx64 "\n",
		       scratch[i], scratch[i + 1]);

	return 0;
}
$

to be compiled with:

$ gcc -mips16 -mips32r2 -Wa,-mmips16e2 -o mips16e2-test mips16e2-test.c
$

With 74Kf hardware, which does not implement the MIPS16e2 ASE, this
program produces the following output:

$ ./mips16e2-test
c8c7c6c5c4c3c2c1        d0cfcecdcccbcac9
00000000c6c5c4c3        00000000c6c5c4c3
00000000c5c4c3c2        00000000c5c4c3c2
00000000c7c6c5c4        00000000c7c6c5c4
0000c4c3c2c10000        0000000000000000
0000cccbcac90000        0000000000000000
000000c4c3c2c100        0000000000000000
000000cccbcac900        0000000000000000
$

regardless of whether the change has been applied or not.

With the change not applied and interAptive MR2 hardware[2], which does
implement the MIPS16e2 ASE, it produces the following output:

$ ./mips16e2-test
c8c7c6c5c4c3c2c1        d0cfcecdcccbcac9
00000000c6c5c4c3        00000000cecdcccb
00000000c5c4c3c2        00000000cdcccbca
00000000c7c6c5c4        00000000cfcecdcc
0000c4c3c2c10000        0000000000000000
0000000000000000        0000cccbcac90000
000000c4c3c2c100        0000000000000000
0000000000000000        000000cccbcac900
$

which shows that for GP-relative operations the correct trapping address
calculated from $gp has been obtained from the CP0 BadVAddr register and
so has data from the source operand, however masking and extension has
not been applied for halfword operations.

With the change applied and interAptive MR2 hardware the program
produces the following output:

$ ./mips16e2-test
c8c7c6c5c4c3c2c1        d0cfcecdcccbcac9
00000000c6c5c4c3        00000000cecdcccb
00000000c5c4c3c2        00000000ffffcbca
00000000c7c6c5c4        000000000000cdcc
0000c4c3c2c10000        0000000000000000
0000000000000000        0000cccbcac90000
000000c4c3c2c100        0000000000000000
0000000000000000        0000000000cac900
$

as expected.

References:

[1] "MIPS32 Architecture for Programmers: MIPS16e2 Application-Specific
    Extension Technical Reference Manual", Imagination Technologies
    Ltd., Document Number: MD01172, Revision 01.00, April 26, 2016

[2] "MIPS32 interAptiv Multiprocessing System Software User's Manual",
    Imagination Technologies Ltd., Document Number: MD00904, Revision
    02.01, June 15, 2016, Chapter 24 "MIPS16e Application-Specific
    Extension to the MIPS32 Instruction Set", pp. 871-883

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16095/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-05 14:07:20 +02:00
Maciej W. Rozycki 8d1630f137 MIPS: MIPS16e2: Identify ASE presence
Identify the presence of the MIPS16e2 ASE as per the architecture
specification[1], by checking for CP0 Config5.CA2 bit being 1[2].

References:

[1] "MIPS32 Architecture for Programmers: MIPS16e2 Application-Specific
    Extension Technical Reference Manual", Imagination Technologies
    Ltd., Document Number: MD01172, Revision 01.00, April 26, 2016,
    Section 1.2 "Software Detection of the ASE", p. 5

[2] "MIPS32 interAptiv Multiprocessing System Software User's Manual",
    Imagination Technologies Ltd., Document Number: MD00904, Revision
    02.01, June 15, 2016, Section 2.2.1.6 "Device Configuration 5 --
    Config5 (CP0 Register 16, Select 5)", pp. 71-72

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16094/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-07-05 14:06:44 +02:00
Linus Torvalds 974668417b driver core patches for 4.13-rc1
Here is the big driver core update for 4.13-rc1.
 
 The large majority of this is a lot of cleanup of old fields in the
 driver core structures and their remaining usages in random drivers.
 All of those fixes have been reviewed by the various subsystem
 maintainers.  There's also some small firmware updates in here, a new
 kobject uevent api interface that makes userspace interaction easier,
 and a few other minor things.
 
 All of these have been in linux-next for a long while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWVpX4A8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymobgCfd0d13IfpZoq1N41wc6z2Z0xD7cwAnRMeH1/p
 kEeISGpHPYP9f8PBh9FO
 =Hfqt
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big driver core update for 4.13-rc1.

  The large majority of this is a lot of cleanup of old fields in the
  driver core structures and their remaining usages in random drivers.
  All of those fixes have been reviewed by the various subsystem
  maintainers. There's also some small firmware updates in here, a new
  kobject uevent api interface that makes userspace interaction easier,
  and a few other minor things.

  All of these have been in linux-next for a long while with no reported
  issues"

* tag 'driver-core-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (56 commits)
  arm: mach-rpc: ecard: fix build error
  zram: convert remaining CLASS_ATTR() to CLASS_ATTR_RO()
  driver-core: remove struct bus_type.dev_attrs
  powerpc: vio_cmo: use dev_groups and not dev_attrs for bus_type
  powerpc: vio: use dev_groups and not dev_attrs for bus_type
  USB: usbip: convert to use DRIVER_ATTR_RW
  s390: drivers: convert to use DRIVER_ATTR_RO/WO
  platform: thinkpad_acpi: convert to use DRIVER_ATTR_RO/RW
  pcmcia: ds: convert to use DRIVER_ATTR_RO
  wireless: ipw2x00: convert to use DRIVER_ATTR_RW
  net: ehea: convert to use DRIVER_ATTR_RO
  net: caif: convert to use DRIVER_ATTR_RO
  TTY: hvc: convert to use DRIVER_ATTR_RW
  PCI: pci-driver: convert to use DRIVER_ATTR_WO
  IB: nes: convert to use DRIVER_ATTR_RW
  HID: hid-core: convert to use DRIVER_ATTR_RO and drv_groups
  arm: ecard: fix dev_groups patch typo
  tty: serdev: use dev_groups and not dev_attrs for bus_type
  sparc: vio: use dev_groups and not dev_attrs for bus_type
  hid: intel-ish-hid: use dev_groups and not dev_attrs for bus_type
  ...
2017-07-03 20:27:48 -07:00