1. 02 Aug, 2017 5 commits
  2. 01 Aug, 2017 3 commits
    • Victor Aoqui's avatar
      powerpc/kernel: Avoid preemption check in iommu_range_alloc() · 75f327c6
      Victor Aoqui authored
      Replace the __this_cpu_read() with raw_cpu_read() in
      iommu_range_alloc(). Otherwise we get a warning about using
      __this_cpu_read() in preemptible code:
      
        BUG: using __this_cpu_read() in preemptible
        caller is iommu_range_alloc+0xa8/0x3d0
      
      Preemption doesn't need to be disabled since according to the comment
      any CPU can safely use any IOMMU pool.
      Signed-off-by: default avatarVictor Aoqui <victora@linux.vnet.ibm.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      75f327c6
    • Gautham R. Shenoy's avatar
      powerpc/powernv: Clear PECE1 in LPCR via stop-api only on Hotplug · 24be85a2
      Gautham R. Shenoy authored
      Currently we use the stop-api provided by the firmware to program the
      SLW engine to restore the values of hypervisor resources that get lost
      on deeper idle states (such as winkle). Since the deep states were
      only used for CPU-Hotplug on POWER8 systems, we would program the LPCR
      to have the PECE1 bit since Hotplugged CPUs shouldn't be spuriously
      woken up by decrementer.
      
      On POWER9, some of the deep platform idle states such as stop4 can be
      used in cpuidle as well. In this case, we want the CPU in stop4 to be
      woken up by the decrementer when some timer on the CPU expires.
      
      In this patch, we program the stop-api for LPCR with PECE1
      bit cleared only when we are offlining the CPU and set it
      back once the CPU is online.
      Signed-off-by: default avatarGautham R. Shenoy <ego@linux.vnet.ibm.com>
      Reviewed-by: default avatarNicholas Piggin <npiggin@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      24be85a2
    • Gautham R. Shenoy's avatar
      powerpc/powernv: Save/Restore additional SPRs for stop4 cpuidle · e1c1cfed
      Gautham R. Shenoy authored
      The stop4 idle state on POWER9 is a deep idle state which loses
      hypervisor resources, but whose latency is low enough that it can be
      exposed via cpuidle.
      
      Until now, the deep idle states which lose hypervisor resources (eg:
      winkle) were only exposed via CPU-Hotplug.  Hence currently on wakeup
      from such states, barring a few SPRs which need to be restored to
      their older value, rest of the SPRS are reinitialized to their values
      corresponding to that at boot time.
      
      When stop4 is used in the context of cpuidle, we want these additional
      SPRs to be restored to their older value, to ensure that the context
      on the CPU coming back from idle is same as it was before going idle.
      
      In this patch, we define a SPR save area in PACA (since we have used
      up the volatile register space in the stack) and on POWER9, we restore
      SPRN_PID, SPRN_LDBAR, SPRN_FSCR, SPRN_HFSCR, SPRN_MMCRA, SPRN_MMCR1,
      SPRN_MMCR2 to the values they had before entering stop.
      Signed-off-by: default avatarGautham R. Shenoy <ego@linux.vnet.ibm.com>
      Reviewed-by: default avatarNicholas Piggin <npiggin@gmail.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      e1c1cfed
  3. 31 Jul, 2017 3 commits
    • Rui Teng's avatar
      powerpc/mm: Fix check of multiple 16G pages from device tree · 23493c12
      Rui Teng authored
      The offset of hugepage block will not be 16G, if the expected
      page is more than one. Calculate the totol size instead of the
      hardcode value.
      
      Fixes: 4792adba ("powerpc: Don't use a 16G page if beyond mem= limits")
      Signed-off-by: default avatarRui Teng <rui.teng@linux.vnet.ibm.com>
      Tested-by: default avatarAnshuman Khandual <khandual@linux.vnet.ibm.com>
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      23493c12
    • Michael Ellerman's avatar
      powerpc/udbg: Reduce the footgun potential of EARLY_DEBUG_LPAR(_HVSI) · 9227f043
      Michael Ellerman authored
      For debugging very early boot problems we have CONFIG_PPC_EARLY_DEBUG,
      which allows configuring the kernel such that it unconditionally writes
      to a particular type of console, regardless of whether that console
      exists or not. This is useful sometimes when the kernel crashes before
      it can even determine what platform it's on, and therefore what consoles
      exist.
      
      However if you boot a kernel built this way on a different platform, it
      will generally crash because it writes to a console that doesn't exist.
      
      A particularly nasty instance of this is if you enable the hypervisor
      console early debug, and then boot that kernel on bare metal. The result
      is that the kernel calls "the hypervisor" very early in boot, but the
      kernel *is* the hypervisor, so we jump to the system call handler and
      start executing all sorts of code that isn't ready to be run. This may
      lead to a machine check or check stop depending on how lucky you are.
      
      Luckily there is an easy way to avoid this particular case. We simply
      read the MSR before installing the hooks, and if we see MSR_HV is set
      then we are the hypervisor and we definitely should not use the
      hypervisor console.
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      9227f043
    • Michael Ellerman's avatar
      powerpc/configs: Add a powernv_be_defconfig · 3603c52f
      Michael Ellerman authored
      Although pretty much everyone using powernv is running little endian,
      we should still test we can build for big endian. So add a
      powernv_be_defconfig, which is autogenerated by flipping the endian
      symbol in powernv_defconfig.
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Reviewed-by: default avatarCyril Bur <cyrilbur@gmail.com>
      3603c52f
  4. 25 Jul, 2017 4 commits
  5. 24 Jul, 2017 8 commits
  6. 23 Jul, 2017 8 commits
  7. 22 Jul, 2017 6 commits
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-linus-v4.13-rc2' of... · 4b162c53
      Linus Torvalds authored
      Merge tag 'hwmon-for-linus-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon fix from Guenter Roeck:
       "Avoid buffer overruns in applesmc driver"
      
      * tag 'hwmon-for-linus-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: (applesmc) Avoid buffer overruns
      4b162c53
    • Linus Torvalds's avatar
      Merge tag 'tty-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · ae75d1ae
      Linus Torvalds authored
      Pull tty/serial fixes from Greg KH:
       "Here are some small tty and serial driver fixes for 4.13-rc2. Nothing
        huge at all, a revert of a patch that turned out to break things, a
        fix up for a new tty ioctl we added in 4.13-rc1 to get the uapi
        definition correct, and a few minor serial driver fixes for reported
        issues.
      
        All of these have been in linux-next for a while with no reported
        issues"
      
      * tag 'tty-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        tty: Fix TIOCGPTPEER ioctl definition
        tty: hide unused pty_get_peer function
        tty: serial: lpuart: Fix the logic for detecting the 32-bit type UART
        serial: imx: Prevent TX buffer PIO write when a DMA has been started
        Revert "serial: imx-serial - move DMA buffer configuration to DT"
        serial: sh-sci: Uninitialized variables in sysfs files
        serial: st-asc: Potential error pointer dereference
      ae75d1ae
    • Linus Torvalds's avatar
      Merge tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · dedaff2f
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are some small char and misc driver fixes for 4.13-rc2. All fix
        reported problems with 4.13-rc1 or older kernels (like the binder
        fixes). Full details in the shortlog.
      
        All have been in linux-next with no reported issues"
      
      * tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        w1: omap-hdq: fix error return code in omap_hdq_probe()
        regmap: regmap-w1: Fix build troubles
        w1: Fix slave count on 1-Wire bus (resend)
        mux: mux-core: unregister mux_class in mux_exit()
        mux: remove the Kconfig question for the subsystem
        nvmem: rockchip-efuse: amend compatible rk322x-efuse to rk3228-efuse
        drivers/fsi: fix fsi_slave_mode prototype
        fsi: core: register with postcore_initcall
        thunderbolt: Correct access permissions for active NVM contents
        vmbus: re-enable channel tasklet
        spmi: pmic-arb: Always allocate ppid_to_apid table
        MAINTAINERS: Add entry for SPMI subsystem
        spmi: Include OF based modalias in device uevent
        binder: Use wake up hint for synchronous transactions.
        binder: use group leader instead of open thread
        Revert "android: binder: Sanity check at binder ioctl"
      dedaff2f
    • Linus Torvalds's avatar
      Merge tag 'usb-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 55fd939e
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are some small USB fixes for 4.13-rc2.
      
        The usual batch, gadget fixes for reported issues, as well as xhci
        fixes, and a small random collection of other fixes for reported
        issues.
      
        All have been in linux-next with no reported issues"
      
      * tag 'usb-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (25 commits)
        xhci: fix memleak in xhci_run()
        usb: xhci: fix spinlock recursion for USB2 test mode
        xhci: fix 20000ms port resume timeout
        usb: xhci: Issue stop EP command only when the EP state is running
        xhci: Bad Ethernet performance plugged in ASM1042A host
        xhci: Fix NULL pointer dereference when cleaning up streams for removed host
        usb: renesas_usbhs: gadget: disable all eps when the driver stops
        usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL
        usb: gadget: udc: renesas_usb3: protect usb3_ep->started in usb3_start_pipen()
        usb: gadget: udc: renesas_usb3: fix zlp transfer by the dmac
        usb: gadget: udc: renesas_usb3: fix free size in renesas_usb3_dma_free_prd()
        usb: gadget: f_uac2: endianness fixes.
        usb: gadget: f_uac1: endianness fixes.
        include: usb: audio: specify exact endiannes of descriptors
        usb: gadget: udc: start_udc() can be static
        usb: dwc2: gadget: On USB RESET reset device address to zero
        usb: storage: return on error to avoid a null pointer dereference
        usb: typec: include linux/device.h in ucsi.h
        USB: cdc-acm: add device-id for quirky printer
        usb: dwc3: gadget: only unmap requests from DMA if mapped
        ...
      55fd939e
    • Linus Torvalds's avatar
      Merge tag 'staging-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · bcb53e57
      Linus Torvalds authored
      Pull staging driver fixes from Greg KH:
       "Here are some small staging driver fixes for reported issues for
        4.13-rc2.
      
        Also in here is a new driver, the virtualbox DRM driver. It's
        stand-alone and got acks from the DRM developers to go in through this
        tree. It's a new thing, but it should be fine for this point in the rc
        cycle due to it being independent.
      
        All of this has been in linux-next for a while with no reported
        issues"
      
      * tag 'staging-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: rtl8188eu: add TL-WN722N v2 support
        staging: speakup: safely register and unregister ldisc
        staging: speakup: add functions to register and unregister ldisc
        staging: speakup: safely close tty
        staging: sm750fb: avoid conflicting vesafb
        staging: lustre: ko2iblnd: check copy_from_iter/copy_to_iter return code
        staging: vboxvideo: Add vboxvideo to drivers/staging
        staging: sm750fb: fixed a assignment typo
        staging: rtl8188eu: memory leak in rtw_free_cmd_obj()
        staging: vchiq_arm: fix error codes in probe
        staging: comedi: ni_mio_common: fix AO timer off-by-one regression
      bcb53e57
    • Randy Dunlap's avatar
      MAINTAINERS: fix alphabetical ordering · 82abbea7
      Randy Dunlap authored
      Fix major alphabetic errors.  No attempt to fix items that all begin
      with the same word (like ARM, BROADCOM, DRM, EDAC, FREESCALE, INTEL,
      OMAP, PCI, SAMSUNG, TI, USB, etc.).
      
      (diffstat +/- is different by one line because TI KEYSTONE MULTICORE
      had 2 blank lines after it.)
      Signed-off-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Acked-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      82abbea7
  8. 21 Jul, 2017 3 commits
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.13-2' of git://git.linux-nfs.org/projects/anna/linux-nfs · 505d5c11
      Linus Torvalds authored
      Pull NFS client bugfixes from Anna Schumaker:
       "Stable bugfix:
         - Fix error reporting regression
      
        Bugfixes:
         - Fix setting filelayout ds address race
         - Fix subtle access bug when using ACLs
         - Fix setting mnt3_counts array size
         - Fix a couple of pNFS commit races"
      
      * tag 'nfs-for-4.13-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
        NFS/filelayout: Fix racy setting of fl->dsaddr in filelayout_check_deviceid()
        NFS: Be more careful about mapping file permissions
        NFS: Store the raw NFS access mask in the inode's access cache
        NFSv3: Convert nfs3_proc_access() to use nfs_access_set_mask()
        NFS: Refactor NFS access to kernel access mask calculation
        net/sunrpc/xprt_sock: fix regression in connection error reporting.
        nfs: count correct array for mnt3_counts array size
        Revert commit 722f0b89 ("pNFS: Don't send COMMITs to the DSes if...")
        pNFS/flexfiles: Handle expired layout segments in ff_layout_initiate_commit()
        NFS: Fix another COMMIT race in pNFS
        NFS: Fix a COMMIT race in pNFS
        mount: copy the port field into the cloned nfs_server structure.
        NFS: Don't run wake_up_bit() when nobody is waiting...
        nfs: add export operations
      505d5c11
    • Linus Torvalds's avatar
      Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs · 99313414
      Linus Torvalds authored
      Pull overlayfs fixes from Miklos Szeredi:
       "This fixes a crash with SELinux and several other old and new bugs"
      
      * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
        ovl: check for bad and whiteout index on lookup
        ovl: do not cleanup directory and whiteout index entries
        ovl: fix xattr get and set with selinux
        ovl: remove unneeded check for IS_ERR()
        ovl: fix origin verification of index dir
        ovl: mark parent impure on ovl_link()
        ovl: fix random return value on mount
      99313414
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 0151ef00
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A small set of fixes for -rc2 - two fixes for BFQ, documentation and
        code, and a removal of an unused variable in nbd. Outside of that, a
        small collection of fixes from the usual crew on the nvme side"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        nvmet: don't report 0-bytes in serial number
        nvmet: preserve controller serial number between reboots
        nvmet: Move serial number from controller to subsystem
        nvmet: prefix version configfs file with attr
        nvme-pci: Fix an error handling path in 'nvme_probe()'
        nvme-pci: Remove nvme_setup_prps BUG_ON
        nvme-pci: add another device ID with stripe quirk
        nvmet-fc: fix byte swapping in nvmet_fc_ls_create_association
        nvme: fix byte swapping in the streams code
        nbd: kill unused ret in recv_work
        bfq: dispatch request to prevent queue stalling after the request completion
        bfq: fix typos in comments about B-WF2Q+ algorithm
      0151ef00