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Commit Graph

1029605 Commits

Author SHA1 Message Date
Ivan Mikhaylov
163f5de509 net/ncsi: add dummy response handler for Intel boards
Add the dummy response handler for Intel boards to prevent incorrect
handling of OEM commands.

Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 14:16:39 -07:00
Ivan Mikhaylov
abd2fddc94 net/ncsi: add NCSI Intel OEM command to keep PHY up
This allows to keep PHY link up and prevents any channel resets during
the host load.

It is KEEP_PHY_LINK_UP option(Veto bit) in i210 datasheet which
block PHY reset and power state changes.

Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 14:16:39 -07:00
Ivan Mikhaylov
27fa107d3b net/ncsi: fix restricted cast warning of sparse
Sparse reports:
net/ncsi/ncsi-rsp.c:406:24: warning: cast to restricted __be32
net/ncsi/ncsi-manage.c:732:33: warning: cast to restricted __be32
net/ncsi/ncsi-manage.c:756:25: warning: cast to restricted __be32
net/ncsi/ncsi-manage.c:779:25: warning: cast to restricted __be32

Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 14:16:39 -07:00
Randy Dunlap
96248d6da6 net: microchip: sparx5: fix kconfig warning
PHY_SPARX5_SERDES depends on OF so SPARX5_SWITCH should also depend
on OF since 'select' does not follow any dependencies.

WARNING: unmet direct dependencies detected for PHY_SPARX5_SERDES
  Depends on [n]: (ARCH_SPARX5 || COMPILE_TEST [=n]) && OF [=n] && HAS_IOMEM [=y]
  Selected by [y]:
  - SPARX5_SWITCH [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_MICROCHIP [=y] && NET_SWITCHDEV [=y] && HAS_IOMEM [=y]

Fixes: 3cfa11bac9 ("net: sparx5: add the basic sparx5 driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Lars Povlsen <lars.povlsen@microchip.com>
Cc: Steen Hegelund <Steen.Hegelund@microchip.com>
Cc: UNGLinuxDriver@microchip.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 13:59:29 -07:00
Shahjada Abul Husain
015fe6fd29 cxgb4: fix IRQ free race during driver unload
IRQs are requested during driver's ndo_open() and then later
freed up in disable_interrupts() during driver unload.
A race exists where driver can set the CXGB4_FULL_INIT_DONE
flag in ndo_open() after the disable_interrupts() in driver
unload path checks it, and hence misses calling free_irq().

Fix by unregistering netdevice first and sync with driver's
ndo_open(). This ensures disable_interrupts() checks the flag
correctly and frees up the IRQs properly.

Fixes: b37987e8db ("cxgb4: Disable interrupts and napi before unregistering netdev")
Signed-off-by: Shahjada Abul Husain <shahjada@chelsio.com>
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 13:34:13 -07:00
Aaron Ma
c342690411 mt76: mt7921: continue to probe driver when fw already downloaded
When reboot system, no power cycles, firmware is already downloaded,
return -EIO will break driver as error:
mt7921e: probe of 0000:03:00.0 failed with error -5

Skip firmware download and continue to probe.

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Fixes: 1c099ab447 ("mt76: mt7921: add MCU support")
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 13:33:13 -07:00
Gatis Peisenieks
b9d233ea21 atl1c: fix Mikrotik 10/25G NIC detection
Since Mikrotik 10/25G NIC MDIO op emulation is not 100% reliable,
on rare occasions it can happen that some physical functions of
the NIC do not get initialized due to timeouted early MDIO op.

This changes the atl1c probe on Mikrotik 10/25G NIC not to
depend on MDIO op emulation.

Signed-off-by: Gatis Peisenieks <gatis@mikrotik.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 13:31:43 -07:00
Valentin Schneider
6a942f5780 s390: preempt: Fix preempt_count initialization
S390's init_idle_preempt_count(p, cpu) doesn't actually let us initialize the
preempt_count of the requested CPU's idle task: it unconditionally writes
to the current CPU's. This clearly conflicts with idle_threads_init(),
which intends to initialize *all* the idle tasks, including their
preempt_count (or their CPU's, if the arch uses a per-CPU preempt_count).

Unfortunately, it seems the way s390 does things doesn't let us initialize
every possible CPU's preempt_count early on, as the pages where this
resides are only allocated when a CPU is brought up and are freed when it
is brought down.

Let the arch-specific code set a CPU's preempt_count when its lowcore is
allocated, and turn init_idle_preempt_count() into an empty stub.

Fixes: f1a0a376ca ("sched/core: Initialize the idle task with preemption disabled")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20210707163338.1623014-1-valentin.schneider@arm.com
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Vasily Gorbik
4ee471fe5a s390/linkage: increase asm symbols alignment to 16
Both clang and gcc (for -march=z13 and later) align functions to 16
bytes at -O2 to benefit branch prediction.

Make asm symbols alignment consistent with that.

This also benefits potential ftrace code patching, which is currently
able to patch 8 aligned bytes at once.

With defconfig this currently increases .text size by 4104 bytes.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
b55e692e6b s390: rename CALL_ON_STACK_NORETURN() to call_on_stack_noreturn()
Lower case matches the call_on_stack() macro and is easier to read.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
a9b660849f s390: add type checking to CALL_ON_STACK_NORETURN() macro
Make sure the to be called function takes no arguments (and returns void).
Otherwise usage of CALL_ON_STACK_NORETURN() would generate broken code.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
60a4813c47 s390: remove old CALL_ON_STACK() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
b8f4c89fd7 s390/softirq: use call_on_stack() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
58d4a785da s390/lib: use call_on_stack() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
0f541cc201 s390/smp: use call_on_stack() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
845370f47f s390/kexec: use call_on_stack() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
de556892dc s390/irq: use call_on_stack() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
7c496e66a2 s390/mm: use call_on_stack() macro
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:18 +02:00
Heiko Carstens
41d71fe59c s390: introduce proper type handling call_on_stack() macro
The existing CALL_ON_STACK() macro allows for subtle bugs:

- There is no type checking of the function that is being called. That
  is: missing or too many arguments do not cause any compile error or
  warning. The same is true if the return type of the called function
  changes. This can lead to quite random bugs.

- Sign and zero extension of arguments is missing. Given that the s390
  C ABI requires that the caller of a function performs proper sign
  and zero extension this can also lead to subtle bugs.

- If arguments to the CALL_ON_STACK() macros contain functions calls
  register corruption can happen due to register asm constructs being
  used.

Therefore introduce a new call_on_stack() macro which is supposed to
fix all these problems.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Heiko Carstens
bb250e64e4 s390/irq: simplify on_async_stack()
Make on_async_stack() a bit more readable, even though as usual it
depends if one considers "!!!" readable or not.
At least the new construct to check if the async stack is in use or
not is a bit shorter and generates slightly better code.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Heiko Carstens
2ae6521504 s390/irq: inline do_softirq_own_stack()
Move do_softirq_own_stack() to proper header file so it can be
inlined; saving a few cycles.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Heiko Carstens
938e02beb3 s390/irq: simplify do_softirq_own_stack()
do_softirq_own_stack() is always called from task context and
therefore it is not necessary to check if the async stack is
currently used.
Remove the check and directly switch to async stack.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Harald Freudenberger
4516f355c5 s390/ap: get rid of register asm in ap_dqap()
This is the second part of the cleanup for the header file ap.h
to remove the register asm statements. This patch deals with
the inline ap_dqap() function where within the assembler code
an odd register of an register pair is to be addressed.

[hca@linux.ibm.com: this intentionally breaks compilation with any
 clang compilers prior to llvm-project commit 458eac257377 ("[SystemZ]
 Support the 'N' code for the odd register in inline-asm.").
 This is hopefully the last clang kernel compile breakage caused by
 incompatibilities between gcc and clang.]

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Sven Schnelle
d26a357fe8 s390: rename PIF_SYSCALL_RESTART to PIF_EXECVE_PGSTE_RESTART
PIF_SYSCALL_RESTART is now only used to restart execve when loading
PGSTE binaries. Rename the flag to reflect that, and avoid people
thinking that this bit has anything to do with generic syscall
restarting.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Sven Schnelle
e3c7a8d7f4 s390: move restart of execve() syscall
On s390, execve might have to be restarted for PGSTE binaries
like kvm. In the past this was done via the PIF_SYSCALL_RESTART
bit. However, with the recent changes, syscalls are now restarted
differently. Now that execve() is the only call that might get
restarted via PIF_SYSCALL_RESTART, move the loop to do_syscall().
This also has the advantage that the restart is no longer visible
to userspace.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Sven Schnelle
fbf50f47ea s390/signal: remove sigreturn on stack
{rt_}sigreturn is now called from the vdso, so we no longer
need the svc on the stack, and therefore no hack to support that
mechanism on machines with non-executable stack.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:12:17 +02:00
Sven Schnelle
df29a7440c s390/signal: switch to using vdso for sigreturn and syscall restart
with generic entry, there's a bug when it comes to restarting of signals.
The failing sequence is:

a) a signal is coming in, and no handler is registered, so the lower
   part of arch_do_signal_or_restart() in arch/s390/kernel/signal.c
   sets PIF_SYSCALL_RESTART.

b) a second signal gets pending while the kernel is still in the exit
   loop, and for that one, a handler exists.

c) The first part of arch_do_signal_or_restart() is called. That part
   calls handle_signal(), which sets up stack + registers for handling
   the signal.

d) __do_syscall() in arch/s390/kernel/syscall.c checks for
   PIF_SYSCALL_RESTART right before leaving to userspace. If it is set,
   it restart's the syscall. However, the registers are already setup
   for handling a signal from c). The syscall is now restarted with the
   wrong arguments.

Change the code to:

- use vdso for syscall_restart() instead of PIF_SYSCALL_RESTART because
  we cannot rewind and go back to userspace on s390 because the system call
  number might be encoded in the svc instruction.
- for all other syscalls we rewind the PSW and return to userspace.

Cc: <stable@kernel.org> # v5.12+ d57778feb9: s390/vdso: always enable vdso
Cc: <stable@kernel.org> # v5.12+ 686341f254: s390/vdso64: add sigreturn,rt_sigreturn and restart_syscall
Cc: <stable@kernel.org> # v5.12+ 43e1f76b0b: s390/vdso: rename VDSO64_LBASE to VDSO_LBASE
Cc: <stable@kernel.org> # v5.12+ 779df22487: s390/vdso: add minimal compat vdso
Cc: <stable@kernel.org> # v5.12+
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 22:09:47 +02:00
Pavel Begunkov
8f487ef2cb io_uring: mitigate unlikely iopoll lag
We have requests like IORING_OP_FILES_UPDATE that don't go through
->iopoll_list but get completed in place under ->uring_lock, and so
after dropping the lock io_iopoll_check() should expect that some CQEs
might have get completed in a meanwhile.

Currently such events won't be accounted in @nr_events, and the loop
will continue to poll even if there is enough of CQEs. It shouldn't be a
problem as it's not likely to happen and so, but not nice either. Just
return earlier in this case, it should be enough.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/66ef932cc66a34e3771bbae04b2953a8058e9d05.1625747741.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-07-08 14:07:43 -06:00
Jonathan Lemon
debdd8e318 ptp: Relocate lookup cookie to correct block.
An earlier commit set the pps_lookup cookie, but the line
was somehow added to the wrong code block.  Correct this.

Fixes: 8602e40fc8 ("ptp: Set lookup cookie when creating a PTP PPS source.")
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 12:33:10 -07:00
Linus Torvalds
f55966571d drm fixes for 5.14-rc1
dma-buf:
 - doc fixes
 
 amdgpu:
 - Misc Navi fixes
 - Powergating fix
 - Yellow Carp updates
 - Beige Goby updates
 - S0ix fix
 - Revert overlay validation fix
 - GPU reset fix for DC
 - PPC64 fix
 - Add new dimgrey cavefish DID
 - RAS fix
 - TTM fixes
 
 amdkfd:
 - SVM fixes
 
 radeon:
 - Fix missing drm_gem_object_put in error path
 - NULL ptr deref fix
 
 i915:
 - display DP VSC fix
 - DG1 display fix
 - IRQ fixes
 - IRQ demidlayering
 
 gma500:
 - bo leaks in error paths fixed
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Merge tag 'drm-next-2021-07-08-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Some fixes for rc1 that came in the past weeks, mainly a bunch of
  amdgpu fixes, some i915 and the rest are misc around the place. I'm
  sending this a bit early so some more stuff may show up, but I'll
  probably take tomorrow off.

  dma-buf:
   - doc fixes

  amdgpu:
   - Misc Navi fixes
   - Powergating fix
   - Yellow Carp updates
   - Beige Goby updates
   - S0ix fix
   - Revert overlay validation fix
   - GPU reset fix for DC
   - PPC64 fix
   - Add new dimgrey cavefish DID
   - RAS fix
   - TTM fixes

  amdkfd:
   - SVM fixes

  radeon:
   - Fix missing drm_gem_object_put in error path
   - NULL ptr deref fix

  i915:
   - display DP VSC fix
   - DG1 display fix
   - IRQ fixes
   - IRQ demidlayering

  gma500:
   - bo leaks in error paths fixed"

* tag 'drm-next-2021-07-08-1' of git://anongit.freedesktop.org/drm/drm: (52 commits)
  drm/i915: Drop all references to DRM IRQ midlayer
  drm/i915: Use the correct IRQ during resume
  drm/i915/display/dg1: Correctly map DPLLs during state readout
  drm/i915/display: Do not zero past infoframes.vsc
  drm/amdgpu: Conditionally reset SDMA RAS error counts
  drm/amdkfd: Maintain svm_bo reference in page->zone_device_data
  drm/amdkfd: add invalid pages debug at vram migration
  drm/amdkfd: skip migration for pages already in VRAM
  drm/amdkfd: skip invalid pages during migrations
  drm/amdkfd: classify and map mixed svm range pages in GPU
  drm/amdkfd: use hmm range fault to get both domain pfns
  drm/amdgpu: get owner ref in validate and map
  drm/amdkfd: set owner ref to svm range prefault
  drm/amdkfd: add owner ref param to get hmm pages
  drm/amdkfd: device pgmap owner at the svm migrate init
  drm/amdkfd: inc counter on child ranges with xnack off
  drm/amd/display: Extend DMUB diagnostic logging to DCN3.1
  drm/amdgpu: Update NV SIMD-per-CU to 2
  drm/amdgpu: add new dimgrey cavefish DID
  drm/amd/pm: skip PrepareMp1ForUnload message in s0ix
  ...
2021-07-08 12:28:15 -07:00
Eric Dumazet
c7bb4b8903 ipv6: tcp: drop silly ICMPv6 packet too big messages
While TCP stack scales reasonably well, there is still one part that
can be used to DDOS it.

IPv6 Packet too big messages have to lookup/insert a new route,
and if abused by attackers, can easily put hosts under high stress,
with many cpus contending on a spinlock while one is stuck in fib6_run_gc()

ip6_protocol_deliver_rcu()
 icmpv6_rcv()
  icmpv6_notify()
   tcp_v6_err()
    tcp_v6_mtu_reduced()
     inet6_csk_update_pmtu()
      ip6_rt_update_pmtu()
       __ip6_rt_update_pmtu()
        ip6_rt_cache_alloc()
         ip6_dst_alloc()
          dst_alloc()
           ip6_dst_gc()
            fib6_run_gc()
             spin_lock_bh() ...

Some of our servers have been hit by malicious ICMPv6 packets
trying to _increase_ the MTU/MSS of TCP flows.

We believe these ICMPv6 packets are a result of a bug in one ISP stack,
since they were blindly sent back for _every_ (small) packet sent to them.

These packets are for one TCP flow:
09:24:36.266491 IP6 Addr1 > Victim ICMP6, packet too big, mtu 1460, length 1240
09:24:36.266509 IP6 Addr1 > Victim ICMP6, packet too big, mtu 1460, length 1240
09:24:36.316688 IP6 Addr1 > Victim ICMP6, packet too big, mtu 1460, length 1240
09:24:36.316704 IP6 Addr1 > Victim ICMP6, packet too big, mtu 1460, length 1240
09:24:36.608151 IP6 Addr1 > Victim ICMP6, packet too big, mtu 1460, length 1240

TCP stack can filter some silly requests :

1) MTU below IPV6_MIN_MTU can be filtered early in tcp_v6_err()
2) tcp_v6_mtu_reduced() can drop requests trying to increase current MSS.

This tests happen before the IPv6 routing stack is entered, thus
removing the potential contention and route exhaustion.

Note that IPv6 stack was performing these checks, but too late
(ie : after the route has been added, and after the potential
garbage collect war)

v2: fix typo caught by Martin, thanks !
v3: exports tcp_mtu_to_mss(), caught by David, thanks !

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Maciej Żenczykowski <maze@google.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-08 12:27:08 -07:00
Linus Torvalds
8c1bfd7460 pwm: Changes for v5.14-rc1
This contains mostly various fixes, cleanups and some conversions to the
 atomic API. One noteworthy change is that PWM consumers can now pass a
 hint to the PWM core about the PWM usage, enabling PWM providers to
 implement various optimizations.
 
 There's also a fair bit of simplification here with the addition of some
 device-managed helpers as well as unification between the DT and ACPI
 firmware interfaces.
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Merge tag 'pwm/for-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This contains mostly various fixes, cleanups and some conversions to
  the atomic API. One noteworthy change is that PWM consumers can now
  pass a hint to the PWM core about the PWM usage, enabling PWM
  providers to implement various optimizations.

  There's also a fair bit of simplification here with the addition of
  some device-managed helpers as well as unification between the DT and
  ACPI firmware interfaces"

* tag 'pwm/for-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (50 commits)
  pwm: Remove redundant assignment to pointer pwm
  pwm: ep93xx: Fix read of uninitialized variable ret
  pwm: ep93xx: Prepare clock before using it
  pwm: ep93xx: Unfold legacy callbacks into ep93xx_pwm_apply()
  pwm: ep93xx: Implement .apply callback
  pwm: vt8500: Only unprepare the clock after the pwmchip was removed
  pwm: vt8500: Drop if with an always false condition
  pwm: tegra: Assert reset only after the PWM was unregistered
  pwm: tegra: Don't needlessly enable and disable the clock in .remove()
  pwm: tegra: Don't modify HW state in .remove callback
  pwm: tegra: Drop an if block with an always false condition
  pwm: core: Simplify some devm_*pwm*() functions
  pwm: core: Remove unused devm_pwm_put()
  pwm: core: Unify fwnode checks in the module
  pwm: core: Reuse fwnode_to_pwmchip() in ACPI case
  pwm: core: Convert to use fwnode for matching
  docs: firmware-guide: ACPI: Add a PWM example
  dt-bindings: pwm: pwm-tiecap: Add compatible string for AM64 SoC
  dt-bindings: pwm: pwm-tiecap: Convert to json schema
  pwm: sprd: Don't check the return code of pwmchip_remove()
  ...
2021-07-08 12:18:04 -07:00
Linus Torvalds
b0dfd9af28 The second batch of clk driver code for -rc1
- A handful of fixes for lmk04832 driver
  - Migrate the basic clk divider to use determine rate ops
  - Fix modpost build for hisilicon hi3559a driver
  - Actually set the parent in k210_clk_set_parent()
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull more clk updates from Stephen Boyd:

 - A handful of fixes for lmk04832 driver

 - Migrate the basic clk divider to use determine rate ops

 - Fix modpost build for hisilicon hi3559a driver

 - Actually set the parent in k210_clk_set_parent()

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  Revert "clk: divider: Switch from .round_rate to .determine_rate by default"
  clk: hisilicon: hi3559a: Drop __init markings everywhere
  clk: meson: regmap: switch to determine_rate for the dividers
  clk: divider: Switch from .round_rate to .determine_rate by default
  clk: divider: Add re-usable determine_rate implementations
  clk: k210: Fix k210_clk_set_parent()
  clk: lmk04832: Fix spelling mistakes in dev_err messages and comments
  clk: lmk04832: fix return value check in lmk04832_probe()
  clk: stm32mp1: fix missing spin_lock_init()
2021-07-08 12:12:22 -07:00
Linus Torvalds
316a2c9b6a pci-v5.14-changes
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Merge tag 'pci-v5.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Fix dsm_label_utf16s_to_utf8s() buffer overrun (Krzysztof
     Wilczyński)
   - Rely on lengths from scnprintf(), dsm_label_utf16s_to_utf8s()
     (Krzysztof Wilczyński)
   - Use sysfs_emit() and sysfs_emit_at() in "show" functions (Krzysztof
     Wilczyński)
   - Fix 'resource_alignment' newline issues (Krzysztof Wilczyński)
   - Add 'devspec' newline (Krzysztof Wilczyński)
   - Dynamically map ECAM regions (Russell King)

  Resource management:
   - Coalesce host bridge contiguous apertures (Kai-Heng Feng)

  PCIe native device hotplug:
   - Ignore Link Down/Up caused by DPC (Lukas Wunner)

  Power management:
   - Leave Apple Thunderbolt controllers on for s2idle or standby
     (Konstantin Kharlamov)

  Virtualization:
   - Work around Huawei Intelligent NIC VF FLR erratum (Chiqijun)
   - Clarify error message for unbound IOV devices (Moritz Fischer)
   - Add pci_reset_bus_function() Secondary Bus Reset interface (Raphael
     Norwitz)

  Peer-to-peer DMA:
   - Simplify distance calculation (Christoph Hellwig)
   - Finish RCU conversion of pdev->p2pdma (Eric Dumazet)
   - Rename upstream_bridge_distance() and rework doc (Logan Gunthorpe)
   - Collect acs list in stack buffer to avoid sleeping (Logan
     Gunthorpe)
   - Use correct calc_map_type_and_dist() return type (Logan Gunthorpe)
   - Warn if host bridge not in whitelist (Logan Gunthorpe)
   - Refactor pci_p2pdma_map_type() (Logan Gunthorpe)
   - Avoid pci_get_slot(), which may sleep (Logan Gunthorpe)

  Altera PCIe controller driver:
   - Add Joyce Ooi as Altera PCIe maintainer (Joyce Ooi)

  Broadcom iProc PCIe controller driver:
   - Fix multi-MSI base vector number allocation (Sandor Bodo-Merle)
   - Support multi-MSI only on uniprocessor kernel (Sandor Bodo-Merle)

  Freescale i.MX6 PCIe controller driver:
   - Limit DBI register length for imx6qp PCIe (Richard Zhu)
   - Add "vph-supply" for PHY supply voltage (Richard Zhu)
   - Enable PHY internal regulator when supplied >3V (Richard Zhu)
   - Remove imx6_pcie_probe() redundant error message (Zhen Lei)

  Intel Gateway PCIe controller driver:
   - Fix INTx enable (Martin Blumenstingl)

  Marvell Aardvark PCIe controller driver:
   - Fix checking for PIO Non-posted Request (Pali Rohár)
   - Implement workaround for the readback value of VEND_ID (Pali Rohár)

  MediaTek PCIe controller driver:
   - Remove redundant error printing in mtk_pcie_subsys_powerup() (Zhen
     Lei)

  MediaTek PCIe Gen3 controller driver:
   - Add missing MODULE_DEVICE_TABLE (Zou Wei)

  Microchip PolarFlare PCIe controller driver:
   - Make struct event_descs static (Krzysztof Wilczyński)

  Microsoft Hyper-V host bridge driver:
   - Fix race condition when removing the device (Long Li)
   - Remove bus device removal unused refcount/functions (Long Li)

  Mobiveil PCIe controller driver:
   - Remove unused readl and writel functions (Krzysztof Wilczyński)

  NVIDIA Tegra PCIe controller driver:
   - Add missing MODULE_DEVICE_TABLE (Zou Wei)

  NVIDIA Tegra194 PCIe controller driver:
   - Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift (Jon Hunter)
   - Fix host initialization during resume (Vidya Sagar)

  Rockchip PCIe controller driver:
   - Register IRQ handlers after device and data are ready (Javier
     Martinez Canillas)"

* tag 'pci-v5.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
  PCI/P2PDMA: Finish RCU conversion of pdev->p2pdma
  PCI: xgene: Annotate __iomem pointer
  PCI: Fix kernel-doc formatting
  PCI: cpcihp: Declare cpci_debug in header file
  MAINTAINERS: Add Joyce Ooi as Altera PCIe maintainer
  PCI: rockchip: Register IRQ handlers after device and data are ready
  PCI: tegra194: Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift
  PCI: aardvark: Implement workaround for the readback value of VEND_ID
  PCI: aardvark: Fix checking for PIO Non-posted Request
  PCI: tegra194: Fix host initialization during resume
  PCI: tegra: Add missing MODULE_DEVICE_TABLE
  PCI: imx6: Enable PHY internal regulator when supplied >3V
  dt-bindings: imx6q-pcie: Add "vph-supply" for PHY supply voltage
  PCI: imx6: Limit DBI register length for imx6qp PCIe
  PCI: imx6: Remove imx6_pcie_probe() redundant error message
  PCI: intel-gw: Fix INTx enable
  PCI: iproc: Support multi-MSI only on uniprocessor kernel
  PCI: iproc: Fix multi-MSI base vector number allocation
  PCI: mediatek-gen3: Add missing MODULE_DEVICE_TABLE
  PCI: Dynamically map ECAM regions
  ...
2021-07-08 12:06:20 -07:00
Masahiro Yamada
27932b6a20 scripts: add generic syscallnr.sh
Like syscallhdr.sh and syscalltbl.sh, add a simple script to generate
the __NR_syscalls, which should not be exported to userspace.

This script is useful to replace arch/mips/kernel/syscalls/syscallnr.sh,
refactor arch/s390/kernel/syscalls/syscalltbl, and eliminate the code
surrounded by #ifdef __KERNEL__ / #endif from exported uapi/asm/unistd_*.h
files.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-07-09 04:01:14 +09:00
Masahiro Yamada
c6a3a81d19 scripts: check duplicated syscall number in syscall table
Currently, syscall{hdr,tbl}.sh sorts the entire syscall table, but you
can assume it is already sorted by the syscall number.

The generated syscall table does not work if the same syscall number
appears twice. Check it in the script.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-07-09 04:00:39 +09:00
Aneesh Kumar K.V
feac00aad1 powerpc/mm: enable HAVE_MOVE_PMD support
mremap HAVE_MOVE_PMD/PUD optimization time comparison for 1GB region:
1GB mremap - Source PTE-aligned, Destination PTE-aligned
  mremap time:      2292772ns
1GB mremap - Source PMD-aligned, Destination PMD-aligned
  mremap time:      1158928ns
1GB mremap - Source PUD-aligned, Destination PUD-aligned
  mremap time:        63886ns

Link: https://lkml.kernel.org/r/20210616045735.374532-4-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
cec6515abb powerpc/book3s64/mm: update flush_tlb_range to flush page walk cache
flush_tlb_range is special in that we don't specify the page size used for
the translation.  Hence when flushing TLB we flush the translation cache
for all possible page sizes.  The kernel also uses the same interface when
moving page tables around.  Such a move requires us to flush the page walk
cache.

Instead of adding another interface to force page walk cache flush, update
flush_tlb_range to flush page walk cache if the range flushed is more than
the PMD range.  A page table move will always involve an invalidate range
more than PMD_SIZE.

Running microbenchmark with mprotect and parallel memory access didn't
show any observable performance impact.

Link: https://lkml.kernel.org/r/20210616045735.374532-3-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
3bbda69c48 mm/mremap: allow arch runtime override
Patch series "Speedup mremap on ppc64", v8.

This patchset enables MOVE_PMD/MOVE_PUD support on power.  This requires
the platform to support updating higher-level page tables without updating
page table entries.  This also needs to invalidate the Page Walk Cache on
architecture supporting the same.

This patch (of 3):

Architectures like ppc64 support faster mremap only with radix
translation.  Hence allow a runtime check w.r.t support for fast mremap.

Link: https://lkml.kernel.org/r/20210616045735.374532-1-aneesh.kumar@linux.ibm.com
Link: https://lkml.kernel.org/r/20210616045735.374532-2-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
97113eb39f mm/mremap: hold the rmap lock in write mode when moving page table entries.
To avoid a race between rmap walk and mremap, mremap does
take_rmap_locks().  The lock was taken to ensure that rmap walk don't miss
a page table entry due to PTE moves via move_pagetables().  The kernel
does further optimization of this lock such that if we are going to find
the newly added vma after the old vma, the rmap lock is not taken.  This
is because rmap walk would find the vmas in the same order and if we don't
find the page table attached to older vma we would find it with the new
vma which we would iterate later.

As explained in commit eb66ae0308 ("mremap: properly flush TLB before
releasing the page") mremap is special in that it doesn't take ownership
of the page.  The optimized version for PUD/PMD aligned mremap also
doesn't hold the ptl lock.  This can result in stale TLB entries as show
below.

This patch updates the rmap locking requirement in mremap to handle the race condition
explained below with optimized mremap::

Optmized PMD move

    CPU 1                           CPU 2                                   CPU 3

    mremap(old_addr, new_addr)      page_shrinker/try_to_unmap_one

    mmap_write_lock_killable()

                                    addr = old_addr
                                    lock(pte_ptl)
    lock(pmd_ptl)
    pmd = *old_pmd
    pmd_clear(old_pmd)
    flush_tlb_range(old_addr)

    *new_pmd = pmd
                                                                            *new_addr = 10; and fills
                                                                            TLB with new addr
                                                                            and old pfn

    unlock(pmd_ptl)
                                    ptep_clear_flush()
                                    old pfn is free.
                                                                            Stale TLB entry

Optimized PUD move also suffers from a similar race.  Both the above race
condition can be fixed if we force mremap path to take rmap lock.

Link: https://lkml.kernel.org/r/20210616045239.370802-7-aneesh.kumar@linux.ibm.com
Fixes: 2c91bd4a4e ("mm: speed up mremap by 20x on large regions")
Fixes: c49dd34018 ("mm: speedup mremap on 1GB or larger regions")
Link: https://lore.kernel.org/linux-mm/CAHk-=wgXVR04eBNtxQfevontWnP6FDm+oj5vauQXP3S-huwbPw@mail.gmail.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
0881ace292 mm/mremap: use pmd/pud_poplulate to update page table entries
pmd/pud_populate is the right interface to be used to set the respective
page table entries.  Some architectures like ppc64 do assume that
set_pmd/pud_at can only be used to set a hugepage PTE.  Since we are not
setting up a hugepage PTE here, use the pmd/pud_populate interface.

Link: https://lkml.kernel.org/r/20210616045239.370802-6-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
d6655dff2e mm/mremap: don't enable optimized PUD move if page table levels is 2
With two level page table don't enable move_normal_pud.

Link: https://lkml.kernel.org/r/20210616045239.370802-5-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
7d846db7d0 mm/mremap: convert huge PUD move to separate helper
With TRANSPARENT_HUGEPAGE_PUD enabled the kernel can find huge PUD
entries.  Add a helper to move huge PUD entries on mremap().

This will be used by a later patch to optimize mremap of PUD_SIZE aligned
level 4 PTE mapped address

This also make sure we support mremap on huge PUD entries even with
CONFIG_HAVE_MOVE_PUD disabled.

[aneesh.kumar@linux.ibm.com: fix build failure with clang-10]
  Link: https://lore.kernel.org/lkml/YMuOSnJsL9qkxweY@archlinux-ax161
  Link: https://lkml.kernel.org/r/20210619134310.89098-1-aneesh.kumar@linux.ibm.com

Link: https://lkml.kernel.org/r/20210616045239.370802-4-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:23 -07:00
Aneesh Kumar K.V
a9cc9c3456 selftest/mremap_test: avoid crash with static build
With a large mmap map size, we can overlap with the text area and using
MAP_FIXED results in unmapping that area.  Switch to MAP_FIXED_NOREPLACE
and handle the EEXIST error.

Link: https://lkml.kernel.org/r/20210616045239.370802-3-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Aneesh Kumar K.V
f27a5c93cd selftest/mremap_test: update the test to handle pagesize other than 4K
Patch series "mrermap fixes", v2.

This patch (of 6):

Instead of hardcoding 4K page size fetch it using sysconf().  For the
performance measurements test still assume 2M and 1G are hugepage sizes.

Link: https://lkml.kernel.org/r/20210616045239.370802-1-aneesh.kumar@linux.ibm.com
Link: https://lkml.kernel.org/r/20210616045239.370802-2-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Aneesh Kumar K.V
dc4875f0e7 mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *
No functional change in this patch.

[aneesh.kumar@linux.ibm.com: m68k build error reported by kernel robot]
  Link: https://lkml.kernel.org/r/87tulxnb2v.fsf@linux.ibm.com

Link: https://lkml.kernel.org/r/20210615110859.320299-2-aneesh.kumar@linux.ibm.com
Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Aneesh Kumar K.V
9cf6fa2458 mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *
No functional change in this patch.

[aneesh.kumar@linux.ibm.com: fix]
  Link: https://lkml.kernel.org/r/87wnqtnb60.fsf@linux.ibm.com
[sfr@canb.auug.org.au: another fix]
  Link: https://lkml.kernel.org/r/20210619134410.89559-1-aneesh.kumar@linux.ibm.com

Link: https://lkml.kernel.org/r/20210615110859.320299-1-aneesh.kumar@linux.ibm.com
Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Stephen Boyd
44e8a5e912 kdump: use vmlinux_build_id to simplify
We can use the vmlinux_build_id array here now instead of open coding it.
This mostly consolidates code.

Link: https://lkml.kernel.org/r/20210511003845.2429846-14-swboyd@chromium.org
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Stephen Boyd
3f14d029f9 buildid: fix kernel-doc notation
Kernel doc should use "Return:" instead of "Returns" to properly reflect
the return values.

Link: https://lkml.kernel.org/r/20210511003845.2429846-13-swboyd@chromium.org
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Stephen Boyd
60eec32637 buildid: mark some arguments const
These arguments are never modified so they can be marked const to indicate
as such.

Link: https://lkml.kernel.org/r/20210511003845.2429846-12-swboyd@chromium.org
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00