1. 12 Jul, 2018 12 commits
    • Paul E. McKenney's avatar
      rcu: Convert rcu_gpnum_ovf() to ->gp_seq · a66ae8ae
      Paul E. McKenney authored
      This commit converts rcu_gpnum_ovf() to use ->gp_seq instead of ->gpnum.
      Same size unsigned long, so same approach.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      a66ae8ae
    • Paul E. McKenney's avatar
      rcu: Move RCU's grace-period-change code to ->gp_seq · 67e14c1e
      Paul E. McKenney authored
      This commit moves __note_gp_changes(), note_gp_changes(), and
      __rcu_pending() to ->gp_seq, creating new rcu_seq_completed_gp() and
      rcu_seq_new_gp() functions for this purpose.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      [ paulmck: Reinstate "cpuend: trace as suggested by Joel Fernandes. ]
      67e14c1e
    • Paul E. McKenney's avatar
      rcu: Convert conditional grace-period primitives to ->gp_seq · e4be81a2
      Paul E. McKenney authored
      This commit converts get_state_synchronize_rcu(), cond_synchronize_rcu(),
      get_state_synchronize_sched(), and cond_synchronize_sched() from ->gpnum
      and ->completed to ->gp_seq.  Note that this also introduces a full
      memory barrier in the already-done paths off cond_synchronize_rcu() and
      cond_synchronize_sched(), as work with LKMM indicates that the earlier
      smp_load_acquire() were insufficiently strong in some situations where
      these two functions were called just as the grace period ended.  In such
      cases, these two functions would not gain the benefit of memory ordering
      at the end of the grace period.
      
      Please note that the performance impact is negligible, as you shouldn't
      be using either function anywhere near a fastpath in any case.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      e4be81a2
    • Paul E. McKenney's avatar
      rcu: Make quiescent-state reporting use ->gp_seq · c9a24e2d
      Paul E. McKenney authored
      This commit switches the functions reporting quiescent states from
      use of ->gpnum to ->gp_seq.  In either case, the point is to handle
      races where a given grace period ends before a quiescent state can
      be reported.  Failing to catch these races would result in too-short
      grace periods, hence the checking.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      c9a24e2d
    • Paul E. McKenney's avatar
      rcu: Convert rcu_check_gp_kthread_starvation() to GP sequence number · 78c5a67f
      Paul E. McKenney authored
      This commit switches rcu_check_gp_kthread_starvation() from printing
      ->gpnum and ->completed to printing ->gp_seq upon detecting a starving
      RCU grace-period kthread during an RCU CPU stall warning.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      78c5a67f
    • Paul E. McKenney's avatar
      rcu: Make rcutorture's batches-completed API use ->gp_seq · 17ef2fe9
      Paul E. McKenney authored
      The rcutorture test invokes rcu_batches_started(),
      rcu_batches_completed(), rcu_batches_started_bh(),
      rcu_batches_completed_bh(), rcu_batches_started_sched(), and
      rcu_batches_completed_sched() to do grace-period consistency checks,
      and rcuperf uses the _completed variants for statistics.
      These functions use ->gpnum and ->completed.  This commit therefore
      replaces them with rcu_get_gp_seq(), rcu_bh_get_gp_seq(), and
      rcu_sched_get_gp_seq(), adjusting rcutorture and rcuperf to make
      use of them.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      17ef2fe9
    • Paul E. McKenney's avatar
      rcu: Move rcu_gp_slow() to ->gp_seq · dee4f422
      Paul E. McKenney authored
      This commit moves rcu_gp_slow() to ->gp_seq.  This function only uses
      the grace-period number to modulate delay, so rcu_seq_ctr(rsp->gp_seq)
      gets the same effect, at least in cases where the delay is to happen
      more than four times per wrap of an unsigned long.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      dee4f422
    • Paul E. McKenney's avatar
      rcu: Introduce grace-period sequence numbers · de30ad51
      Paul E. McKenney authored
      This commit adds grace-period sequence numbers (->gp_seq) to the
      rcu_state, rcu_node, and rcu_data structures, and updates them.
      It also checks for consistency between rsp->gpnum and rsp->gp_seq.
      These ->gp_seq counters will eventually replace the existing ->gpnum
      and ->completed counters, allowing a single memory access to determine
      whether or not a grace period is in progress and if so, which one.
      This in turn will enable changes that will reduce ->lock contention on
      the leaf rcu_node structures.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      de30ad51
    • Paul E. McKenney's avatar
      Merge branches 'expedited.2018.07.12a', 'fixes.2018.07.12a',... · 609af1cd
      Paul E. McKenney authored
      Merge branches 'expedited.2018.07.12a', 'fixes.2018.07.12a', 'srcu.2018.06.25b' and 'torture.2018.06.25b' into HEAD
      
      expedited.2018.07.12a: Expedited grace-period updates.
      fixes.2018.07.12a: Pre-gp_seq miscellaneous fixes.
      srcu.2018.06.25b: SRCU updates.
      torture.2018.06.25b: Pre-gp_seq torture-test updates.
      609af1cd
    • Paul E. McKenney's avatar
      rcu: Make rcu_gp_cleanup() write only once to ->gp_flags · 18390aea
      Paul E. McKenney authored
      At the end of rcu_gp_cleanup(), if another grace period is needed, but
      not via rcu_accelerate_cbs(), the ->gp_flags field is written twice,
      once when making the new grace-period request, and once when clearing
      all other types of requests.  This commit therefore adds an else-clause
      to avoid this double write.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      18390aea
    • Paul E. McKenney's avatar
      rcu: Diagnostics for grace-period startup hangs · 26d950a9
      Paul E. McKenney authored
      This commit causes a splat if RCU is idle and a request for a new grace
      period is ignored for more than one second.  This splat normally indicates
      that some code path asked for a new grace period, but failed to wake up
      the RCU grace-period kthread.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      [ paulmck: Fix bug located by Dan Carpenter and his static checker. ]
      [ paulmck: Fix self-deadlock bug located 0day test robot. ]
      [ paulmck: Disable unless CONFIG_PROVE_RCU=y. ]
      26d950a9
    • Boqun Feng's avatar
      rcu: Make expedited GPs handle CPU 0 being offline · fcc63543
      Boqun Feng authored
      Currently, the parallelized initialization of expedited grace periods uses
      the workqueue associated with each rcu_node structure's ->grplo field.
      This works fine unless that CPU is offline.  This commit therefore uses
      the CPU corresponding to the lowest-numbered online CPU, or just queues
      the work on WORK_CPU_UNBOUND if there are no online CPUs corresponding
      to this rcu_node structure.
      
      Note that this patch uses cpu_is_offline() instead of the usual approach
      of checking bits in the rcu_node structure's ->qsmaskinitnext field.  This
      is safe because preemption is disabled across both the cpu_is_offline()
      check and the call to queue_work_on().
      Signed-off-by: default avatarBoqun Feng <boqun.feng@gmail.com>
      [ paulmck: Disable preemption to close offline race window. ]
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      [ paulmck: Apply Peter Zijlstra feedback on CPU selection. ]
      Tested-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      fcc63543
  2. 26 Jun, 2018 3 commits
    • Paul E. McKenney's avatar
      rcu: Exclude near-simultaneous RCU CPU stall warnings · 8c42b1f3
      Paul E. McKenney authored
      There is a two-jiffy delay between the time that a CPU will self-report
      an RCU CPU stall warning and the time that some other CPU will report a
      warning on behalf of the first CPU.  This has worked well in the past,
      but on busy systems, it is possible for the two warnings to overlap,
      which makes interpreting them extremely difficult.
      
      This commit therefore uses a cmpxchg-based timing decision that
      allows only one report in a given one-minute period (assuming default
      stall-warning Kconfig parameters).  This approach will of course fail
      if you are seeing minute-long vCPU preemption, but in that case the
      overlapping RCU CPU stall warnings are the least of your worries.
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      8c42b1f3
    • Boqun Feng's avatar
      rcu: Use the proper lockdep annotation in dump_blkd_tasks() · ce11fae8
      Boqun Feng authored
      Sparse reported this:
      
      | kernel/rcu/tree_plugin.h:814:9: warning: incorrect type in argument 1 (different modifiers)
      | kernel/rcu/tree_plugin.h:814:9:    expected struct lockdep_map const *lock
      | kernel/rcu/tree_plugin.h:814:9:    got struct lockdep_map [noderef] *<noident>
      
      This is caused by using vanilla lockdep annotations on rcu_node::lock,
      and that requires accessing ->lock of rcu_node directly. However we need
      to keep rcu_node::lock __private to avoid breaking its extra ordering
      guarantee. And we have a dedicated lockdep annotation for
      rcu_node::lock, so use it.
      Signed-off-by: default avatarBoqun Feng <boqun.feng@gmail.com>
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      ce11fae8
    • Paul E. McKenney's avatar
      rcu: Add debugging info to assertion · 4bc8d555
      Paul E. McKenney authored
      The WARN_ON_ONCE(rcu_preempt_blocked_readers_cgp()) in
      rcu_gp_cleanup() triggers (inexplicably, of course) every so often.
      This commit therefore extracts more information.
      Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      4bc8d555
  3. 25 Jun, 2018 10 commits
  4. 16 Jun, 2018 8 commits
    • Linus Torvalds's avatar
      Linux 4.18-rc1 · ce397d21
      Linus Torvalds authored
      ce397d21
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20180616' of git://git.kernel.dk/linux-block · 265c5596
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A collection of fixes that should go into -rc1. This contains:
      
         - bsg_open vs bsg_unregister race fix (Anatoliy)
      
         - NVMe pull request from Christoph, with fixes for regressions in
           this window, FC connect/reconnect path code unification, and a
           trace point addition.
      
         - timeout fix (Christoph)
      
         - remove a few unused functions (Christoph)
      
         - blk-mq tag_set reinit fix (Roman)"
      
      * tag 'for-linus-20180616' of git://git.kernel.dk/linux-block:
        bsg: fix race of bsg_open and bsg_unregister
        block: remov blk_queue_invalidate_tags
        nvme-fabrics: fix and refine state checks in __nvmf_check_ready
        nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
        nvme-fabrics: refactor queue ready check
        blk-mq: remove blk_mq_tagset_iter
        nvme: remove nvme_reinit_tagset
        nvme-fc: fix nulling of queue data on reconnect
        nvme-fc: remove reinit_request routine
        blk-mq: don't time out requests again that are in the timeout handler
        nvme-fc: change controllers first connect to use reconnect path
        nvme: don't rely on the changed namespace list log
        nvmet: free smart-log buffer after use
        nvme-rdma: fix error flow during mapping request data
        nvme: add bio remapping tracepoint
        nvme: fix NULL pointer dereference in nvme_init_subsystem
        blk-mq: reinit q->tag_set_list entry only after grace period
      265c5596
    • Linus Torvalds's avatar
      Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental · 5e7b9212
      Linus Torvalds authored
      Pull documentation fixes from Mauro Carvalho Chehab:
       "This solves a series of broken links for files under Documentation,
        and improves a script meant to detect such broken links (see
        scripts/documentation-file-ref-check).
      
        The changes on this series are:
      
         - can.rst: fix a footnote reference;
      
         - crypto_engine.rst: Fix two parsing warnings;
      
         - Fix a lot of broken references to Documentation/*;
      
         - improve the scripts/documentation-file-ref-check script, in order
           to help detecting/fixing broken references, preventing
           false-positives.
      
        After this patch series, only 33 broken references to doc files are
        detected by scripts/documentation-file-ref-check"
      
      * tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits)
        fix a series of Documentation/ broken file name references
        Documentation: rstFlatTable.py: fix a broken reference
        ABI: sysfs-devices-system-cpu: remove a broken reference
        devicetree: fix a series of wrong file references
        devicetree: fix name of pinctrl-bindings.txt
        devicetree: fix some bindings file names
        MAINTAINERS: fix location of DT npcm files
        MAINTAINERS: fix location of some display DT bindings
        kernel-parameters.txt: fix pointers to sound parameters
        bindings: nvmem/zii: Fix location of nvmem.txt
        docs: Fix more broken references
        scripts/documentation-file-ref-check: check tools/*/Documentation
        scripts/documentation-file-ref-check: get rid of false-positives
        scripts/documentation-file-ref-check: hint: dash or underline
        scripts/documentation-file-ref-check: add a fix logic for DT
        scripts/documentation-file-ref-check: accept more wildcards at filenames
        scripts/documentation-file-ref-check: fix help message
        media: max2175: fix location of driver's companion documentation
        media: v4l: fix broken video4linux docs locations
        media: dvb: point to the location of the old README.dvb-usb file
        ...
      5e7b9212
    • Linus Torvalds's avatar
      Merge tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs · dbb2816f
      Linus Torvalds authored
      Pull fsnotify updates from Jan Kara:
       "fsnotify cleanups unifying handling of different watch types.
      
        This is the shortened fsnotify series from Amir with the last five
        patches pulled out. Amir has modified those patches to not change
        struct inode but obviously it's too late for those to go into this
        merge window"
      
      * tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
        fsnotify: add fsnotify_add_inode_mark() wrappers
        fanotify: generalize fanotify_should_send_event()
        fsnotify: generalize send_to_group()
        fsnotify: generalize iteration of marks by object type
        fsnotify: introduce marks iteration helpers
        fsnotify: remove redundant arguments to handle_event()
        fsnotify: use type id to identify connector object type
      dbb2816f
    • Linus Torvalds's avatar
      Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux · 644f2639
      Linus Torvalds authored
      Pull fbdev updates from Bartlomiej Zolnierkiewicz:
       "There is nothing really major here, few small fixes, some cleanups and
        dead drivers removal:
      
         - mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
      
         - add missing module license tags to omap/omapfb driver (Arnd
           Bergmann)
      
         - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
           Bergmann)
      
         - convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
           (Jia-Ju Bai)
      
         - allow COMPILE_TEST build for viafb driver (media part was reviewed
           by media subsystem Maintainer)
      
         - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
           drivers (drm parts were acked by shmob-drm driver Maintainer)
      
         - remove unused auo_k190xfb drivers
      
         - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
           Shevchenko, Colin Ian King)"
      
      * tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
        fb_omap2: add gpiolib dependency
        video/omap: add module license tags
        MAINTAINERS: make omapfb orphan
        video: fbdev: pxafb: match_string() conversion fixup
        video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
        video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
        video: fbdev: pxafb: Convert to use match_string() helper
        video: fbdev: via: allow COMPILE_TEST build
        video: fbdev: remove unused sh_mobile_meram driver
        drm: shmobile: remove unused MERAM support
        video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
        video: fbdev: remove unused auo_k190xfb drivers
        video: omap: Improve a size determination in omapfb_do_probe()
        video: sm501fb: Improve a size determination in sm501fb_probe()
        video: fbdev-MMP: Improve a size determination in path_init()
        video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
        video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
        video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
        video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
        video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
        ...
      644f2639
    • Linus Torvalds's avatar
      Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 35773c93
      Linus Torvalds authored
      Pull AFS updates from Al Viro:
       "Assorted AFS stuff - ended up in vfs.git since most of that consists
        of David's AFS-related followups to Christoph's procfs series"
      
      * 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        afs: Optimise callback breaking by not repeating volume lookup
        afs: Display manually added cells in dynamic root mount
        afs: Enable IPv6 DNS lookups
        afs: Show all of a server's addresses in /proc/fs/afs/servers
        afs: Handle CONFIG_PROC_FS=n
        proc: Make inline name size calculation automatic
        afs: Implement network namespacing
        afs: Mark afs_net::ws_cell as __rcu and set using rcu functions
        afs: Fix a Sparse warning in xdr_decode_AFSFetchStatus()
        proc: Add a way to make network proc files writable
        afs: Rearrange fs/afs/proc.c to remove remaining predeclarations.
        afs: Rearrange fs/afs/proc.c to move the show routines up
        afs: Rearrange fs/afs/proc.c by moving fops and open functions down
        afs: Move /proc management functions to the end of the file
      35773c93
    • Linus Torvalds's avatar
      Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 29d6849d
      Linus Torvalds authored
      Pull compat updates from Al Viro:
       "Some biarch patches - getting rid of assorted (mis)uses of
        compat_alloc_user_space().
      
        Not much in that area this cycle..."
      
      * 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        orangefs: simplify compat ioctl handling
        signalfd: lift sigmask copyin and size checks to callers of do_signalfd4()
        vmsplice(): lift importing iovec into vmsplice(2) and compat counterpart
      29d6849d
    • Linus Torvalds's avatar
      Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · a5b729ea
      Linus Torvalds authored
      Pull aio fixes from Al Viro:
       "Assorted AIO followups and fixes"
      
      * 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        eventpoll: switch to ->poll_mask
        aio: only return events requested in poll_mask() for IOCB_CMD_POLL
        eventfd: only return events requested in poll_mask()
        aio: mark __aio_sigset::sigmask const
      a5b729ea
  5. 15 Jun, 2018 7 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 9215310c
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Various netfilter fixlets from Pablo and the netfilter team.
      
       2) Fix regression in IPVS caused by lack of PMTU exceptions on local
          routes in ipv6, from Julian Anastasov.
      
       3) Check pskb_trim_rcsum for failure in DSA, from Zhouyang Jia.
      
       4) Don't crash on poll in TLS, from Daniel Borkmann.
      
       5) Revert SO_REUSE{ADDR,PORT} change, it regresses various things
          including Avahi mDNS. From Bart Van Assche.
      
       6) Missing of_node_put in qcom/emac driver, from Yue Haibing.
      
       7) We lack checking of the TCP checking in one special case during SYN
          receive, from Frank van der Linden.
      
       8) Fix module init error paths of mac80211 hwsim, from Johannes Berg.
      
       9) Handle 802.1ad properly in stmmac driver, from Elad Nachman.
      
      10) Must grab HW caps before doing quirk checks in stmmac driver, from
          Jose Abreu.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits)
        net: stmmac: Run HWIF Quirks after getting HW caps
        neighbour: skip NTF_EXT_LEARNED entries during forced gc
        net: cxgb3: add error handling for sysfs_create_group
        tls: fix waitall behavior in tls_sw_recvmsg
        tls: fix use-after-free in tls_push_record
        l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl()
        l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels
        mlxsw: spectrum_switchdev: Fix port_vlan refcounting
        mlxsw: spectrum_router: Align with new route replace logic
        mlxsw: spectrum_router: Allow appending to dev-only routes
        ipv6: Only emit append events for appended routes
        stmmac: added support for 802.1ad vlan stripping
        cfg80211: fix rcu in cfg80211_unregister_wdev
        mac80211: Move up init of TXQs
        mac80211_hwsim: fix module init error paths
        cfg80211: initialize sinfo in cfg80211_get_station
        nl80211: fix some kernel doc tag mistakes
        hv_netvsc: Fix the variable sizes in ipsecv2 and rsc offload
        rds: avoid unenecessary cong_update in loop transport
        l2tp: clean up stale tunnel or session in pppol2tp_connect's error path
        ...
      9215310c
    • Linus Torvalds's avatar
      Merge tag 'modules-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux · de7f01c2
      Linus Torvalds authored
      Pull module updates from Jessica Yu:
       "Minor code cleanup and also allow sig_enforce param to be shown in
        sysfs with CONFIG_MODULE_SIG_FORCE"
      
      * tag 'modules-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
        module: Allow to always show the status of modsign
        module: Do not access sig_enforce directly
      de7f01c2
    • Linus Torvalds's avatar
      Merge branch 'for-linus-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml · 8d1e5133
      Linus Torvalds authored
      Pull uml updates from Richard Weinberger:
       "Minor updates for UML:
      
         - fixes for our new vector network driver by Anton
      
         - initcall cleanup by Alexander
      
         - We have a new mailinglist, sourceforge.net sucks"
      
      * 'for-linus-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
        um: Fix raw interface options
        um: Fix initialization of vector queues
        um: remove uml initcalls
        um: Update mailing list address
      8d1e5133
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-4.18-merge_window' of... · 6a4d4b32
      Linus Torvalds authored
      Merge tag 'riscv-for-linus-4.18-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux
      
      Pull RISC-V updates from Palmer Dabbelt:
       "This contains some small RISC-V updates I'd like to target for 4.18.
      
        They are all fairly small this time. Here's a short summary, there's
        more info in the commits/merges:
      
         - a fix to __clear_user to respect the passed arguments.
      
         - enough support for the perf subsystem to work with RISC-V's ISA
           defined performance counters.
      
         - support for sparse and cleanups suggested by it.
      
         - support for R_RISCV_32 (a relocation, not the 32-bit ISA).
      
         - some MAINTAINERS cleanups.
      
         - the addition of CONFIG_HVC_RISCV_SBI to our defconfig, as it's
           always present.
      
        I've given these a simple build+boot test"
      
      * tag 'riscv-for-linus-4.18-merge_window' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
        RISC-V: Add CONFIG_HVC_RISCV_SBI=y to defconfig
        RISC-V: Handle R_RISCV_32 in modules
        riscv/ftrace: Export _mcount when DYNAMIC_FTRACE isn't set
        riscv: add riscv-specific predefines to CHECKFLAGS
        riscv: split the declaration of __copy_user
        riscv: no __user for probe_kernel_address()
        riscv: use NULL instead of a plain 0
        perf: riscv: Add Document for Future Porting Guide
        perf: riscv: preliminary RISC-V support
        MAINTAINERS: Update Albert's email, he's back at Berkeley
        MAINTAINERS: Add myself as a maintainer for SiFive's drivers
        riscv: Fix the bug in memory access fixup code
      6a4d4b32
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 8949170c
      Linus Torvalds authored
      Pull more kvm updates from Paolo Bonzini:
       "Mostly the PPC part of the release, but also switching to Arnd's fix
        for the hyperv config issue and a typo fix.
      
        Main PPC changes:
      
         - reimplement the MMIO instruction emulation
      
         - transactional memory support for PR KVM
      
         - improve radix page table handling"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (63 commits)
        KVM: x86: VMX: redo fix for link error without CONFIG_HYPERV
        KVM: x86: fix typo at kvm_arch_hardware_setup comment
        KVM: PPC: Book3S PR: Fix failure status setting in tabort. emulation
        KVM: PPC: Book3S PR: Enable use on POWER9 bare-metal hosts in HPT mode
        KVM: PPC: Book3S PR: Don't let PAPR guest set MSR hypervisor bit
        KVM: PPC: Book3S PR: Fix failure status setting in treclaim. emulation
        KVM: PPC: Book3S PR: Fix MSR setting when delivering interrupts
        KVM: PPC: Book3S PR: Handle additional interrupt types
        KVM: PPC: Book3S PR: Enable kvmppc_get/set_one_reg_pr() for HTM registers
        KVM: PPC: Book3S: Remove load/put vcpu for KVM_GET_REGS/KVM_SET_REGS
        KVM: PPC: Remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl
        KVM: PPC: Move vcpu_load/vcpu_put down to each ioctl case in kvm_arch_vcpu_ioctl
        KVM: PPC: Book3S PR: Enable HTM for PR KVM for KVM_CHECK_EXTENSION ioctl
        KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM
        KVM: PPC: Book3S PR: Add guard code to prevent returning to guest with PR=0 and Transactional state
        KVM: PPC: Book3S PR: Add emulation for tabort. in privileged state
        KVM: PPC: Book3S PR: Add emulation for trechkpt.
        KVM: PPC: Book3S PR: Add emulation for treclaim.
        KVM: PPC: Book3S PR: Restore NV regs after emulating mfspr from TM SPRs
        KVM: PPC: Book3S PR: Always fail transactions in guest privileged state
        ...
      8949170c
    • Linus Torvalds's avatar
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost · 2f3f0566
      Linus Torvalds authored
      Pull virtio updates from Michael Tsirkin:
       "virtio, vhost: features, fixes
      
         - PCI virtual function support for virtio
      
         - DMA barriers for virtio strong barriers
      
         - bugfixes"
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
        virtio: update the comments for transport features
        virtio_pci: support enabling VFs
        vhost: fix info leak due to uninitialized memory
        virtio_ring: switch to dma_XX barriers for rpmsg
      2f3f0566
    • Mauro Carvalho Chehab's avatar
      fix a series of Documentation/ broken file name references · 44348e8a
      Mauro Carvalho Chehab authored
      As files move around, their previous links break. Fix the
      references for them.
      Acked-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
      Acked-by: default avatarJonathan Corbet <corbet@lwn.net>
      44348e8a