1. 07 Nov, 2019 8 commits
    • Dan Williams's avatar
      lib: Uplevel the pmem "region" ida to a global allocator · 33dd7075
      Dan Williams authored
      In preparation for handling platform differentiated memory types beyond
      persistent memory, uplevel the "region" identifier to a global number
      space. This enables a device-dax instance to be registered to any memory
      type with guaranteed unique names.
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      33dd7075
    • Dan Williams's avatar
      x86/efi: Add efi_fake_mem support for EFI_MEMORY_SP · 199c8471
      Dan Williams authored
      Given that EFI_MEMORY_SP is platform BIOS policy decision for marking
      memory ranges as "reserved for a specific purpose" there will inevitably
      be scenarios where the BIOS omits the attribute in situations where it
      is desired. Unlike other attributes if the OS wants to reserve this
      memory from the kernel the reservation needs to happen early in init. So
      early, in fact, that it needs to happen before e820__memblock_setup()
      which is a pre-requisite for efi_fake_memmap() that wants to allocate
      memory for the updated table.
      
      Introduce an x86 specific efi_fake_memmap_early() that can search for
      attempts to set EFI_MEMORY_SP via efi_fake_mem and update the e820 table
      accordingly.
      
      The KASLR code that scans the command line looking for user-directed
      memory reservations also needs to be updated to consider
      "efi_fake_mem=nn@ss:0x40000" requests.
      Acked-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Reviewed-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      199c8471
    • Dan Williams's avatar
      arm/efi: EFI soft reservation to memblock · 16993c0f
      Dan Williams authored
      UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the
      interpretation of the EFI Memory Types as "reserved for a specific
      purpose".
      
      The proposed Linux behavior for specific purpose memory is that it is
      reserved for direct-access (device-dax) by default and not available for
      any kernel usage, not even as an OOM fallback.  Later, through udev
      scripts or another init mechanism, these device-dax claimed ranges can
      be reconfigured and hot-added to the available System-RAM with a unique
      node identifier. This device-dax management scheme implements "soft" in
      the "soft reserved" designation by allowing some or all of the
      reservation to be recovered as typical memory. This policy can be
      disabled at compile-time with CONFIG_EFI_SOFT_RESERVE=n, or runtime with
      efi=nosoftreserve.
      
      For this patch, update the ARM paths that consider
      EFI_CONVENTIONAL_MEMORY to optionally take the EFI_MEMORY_SP attribute
      into account as a reservation indicator. Publish the soft reservation as
      IORES_DESC_SOFT_RESERVED memory, similar to x86.
      
      (Based on an original patch by Ard)
      Reviewed-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      16993c0f
    • Dan Williams's avatar
      x86/efi: EFI soft reservation to E820 enumeration · 262b45ae
      Dan Williams authored
      UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the
      interpretation of the EFI Memory Types as "reserved for a specific
      purpose".
      
      The proposed Linux behavior for specific purpose memory is that it is
      reserved for direct-access (device-dax) by default and not available for
      any kernel usage, not even as an OOM fallback.  Later, through udev
      scripts or another init mechanism, these device-dax claimed ranges can
      be reconfigured and hot-added to the available System-RAM with a unique
      node identifier. This device-dax management scheme implements "soft" in
      the "soft reserved" designation by allowing some or all of the
      reservation to be recovered as typical memory. This policy can be
      disabled at compile-time with CONFIG_EFI_SOFT_RESERVE=n, or runtime with
      efi=nosoftreserve.
      
      This patch introduces 2 new concepts at once given the entanglement
      between early boot enumeration relative to memory that can optionally be
      reserved from the kernel page allocator by default. The new concepts
      are:
      
      - E820_TYPE_SOFT_RESERVED: Upon detecting the EFI_MEMORY_SP
        attribute on EFI_CONVENTIONAL memory, update the E820 map with this
        new type. Only perform this classification if the
        CONFIG_EFI_SOFT_RESERVE=y policy is enabled, otherwise treat it as
        typical ram.
      
      - IORES_DESC_SOFT_RESERVED: Add a new I/O resource descriptor for
        a device driver to search iomem resources for application specific
        memory. Teach the iomem code to identify such ranges as "Soft Reserved".
      
      Note that the comment for do_add_efi_memmap() needed refreshing since it
      seemed to imply that the efi map might overflow the e820 table, but that
      is not an issue as of commit 7b6e4ba3 "x86/boot/e820: Clean up the
      E820_X_MAX definition" that removed the 128 entry limit for
      e820__range_add().
      
      A follow-on change integrates parsing of the ACPI HMAT to identify the
      node and sub-range boundaries of EFI_MEMORY_SP designated memory. For
      now, just identify and reserve memory of this type.
      Acked-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Reported-by: default avatarkbuild test robot <lkp@intel.com>
      Reviewed-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      262b45ae
    • Dan Williams's avatar
      efi: Common enable/disable infrastructure for EFI soft reservation · b617c526
      Dan Williams authored
      UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the
      interpretation of the EFI Memory Types as "reserved for a specific
      purpose".
      
      The proposed Linux behavior for specific purpose memory is that it is
      reserved for direct-access (device-dax) by default and not available for
      any kernel usage, not even as an OOM fallback.  Later, through udev
      scripts or another init mechanism, these device-dax claimed ranges can
      be reconfigured and hot-added to the available System-RAM with a unique
      node identifier. This device-dax management scheme implements "soft" in
      the "soft reserved" designation by allowing some or all of the
      reservation to be recovered as typical memory. This policy can be
      disabled at compile-time with CONFIG_EFI_SOFT_RESERVE=n, or runtime with
      efi=nosoftreserve.
      
      As for this patch, define the common helpers to determine if the
      EFI_MEMORY_SP attribute should be honored. The determination needs to be
      made early to prevent the kernel from being loaded into soft-reserved
      memory, or otherwise allowing early allocations to land there. Follow-on
      changes are needed per architecture to leverage these helpers in their
      respective mem-init paths.
      Reviewed-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      b617c526
    • Dan Williams's avatar
      x86/efi: Push EFI_MEMMAP check into leaf routines · 6950e31b
      Dan Williams authored
      In preparation for adding another EFI_MEMMAP dependent call that needs
      to occur before e820__memblock_setup() fixup the existing efi calls to
      check for EFI_MEMMAP internally. This ends up being cleaner than the
      alternative of checking EFI_MEMMAP multiple times in setup_arch().
      Reviewed-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Reviewed-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      6950e31b
    • Dan Williams's avatar
      efi: Enumerate EFI_MEMORY_SP · fe3e5e65
      Dan Williams authored
      UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the
      interpretation of the EFI Memory Types as "reserved for a specific
      purpose". The intent of this bit is to allow the OS to identify precious
      or scarce memory resources and optionally manage it separately from
      EfiConventionalMemory. As defined older OSes that do not know about this
      attribute are permitted to ignore it and the memory will be handled
      according to the OS default policy for the given memory type.
      
      In other words, this "specific purpose" hint is deliberately weaker than
      EfiReservedMemoryType in that the system continues to operate if the OS
      takes no action on the attribute. The risk of taking no action is
      potentially unwanted / unmovable kernel allocations from the designated
      resource that prevent the full realization of the "specific purpose".
      For example, consider a system with a high-bandwidth memory pool. Older
      kernels are permitted to boot and consume that memory as conventional
      "System-RAM" newer kernels may arrange for that memory to be set aside
      (soft reserved) by the system administrator for a dedicated
      high-bandwidth memory aware application to consume.
      
      Specifically, this mechanism allows for the elimination of scenarios
      where platform firmware tries to game OS policy by lying about ACPI SLIT
      values, i.e. claiming that a precious memory resource has a high
      distance to trigger the OS to avoid it by default. This reservation hint
      allows platform-firmware to instead tell the truth about performance
      characteristics by indicate to OS memory management to put immovable
      allocations elsewhere.
      
      Implement simple detection of the bit for EFI memory table dumps and
      save the kernel policy for a follow-on change.
      Reviewed-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Reviewed-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      fe3e5e65
    • Dan Williams's avatar
      ACPI: NUMA: Establish a new drivers/acpi/numa/ directory · c710fcc5
      Dan Williams authored
      Currently hmat.c lives under an "hmat" directory which does not enhance
      the description of the file. The initial motivation for giving hmat.c
      its own directory was to delineate it as mm functionality in contrast to
      ACPI device driver functionality.
      
      As ACPI continues to play an increasing role in conveying
      memory location and performance topology information to the OS take the
      opportunity to co-locate these NUMA relevant tables in a combined
      directory.
      
      numa.c is renamed to srat.c and moved to drivers/acpi/numa/ along with
      hmat.c.
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      Reviewed-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      c710fcc5
  2. 03 Nov, 2019 2 commits
    • Linus Torvalds's avatar
      Linux 5.4-rc6 · a99d8080
      Linus Torvalds authored
      a99d8080
    • Linus Torvalds's avatar
      Merge tag 'usb-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 3a69c9e5
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "The USB sub-maintainers woke up this past week and sent a bunch of
        tiny fixes. Here are a lot of small patches that that resolve a bunch
        of reported issues in the USB core, drivers, serial drivers, gadget
        drivers, and of course, xhci :)
      
        All of these have been in linux-next with no reported issues"
      
      * tag 'usb-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (31 commits)
        usb: dwc3: gadget: fix race when disabling ep with cancelled xfers
        usb: cdns3: gadget: Fix g_audio use case when connected to Super-Speed host
        usb: cdns3: gadget: reset EP_CLAIMED flag while unloading
        USB: serial: whiteheat: fix line-speed endianness
        USB: serial: whiteheat: fix potential slab corruption
        USB: gadget: Reject endpoints with 0 maxpacket value
        UAS: Revert commit 3ae62a42 ("UAS: fix alignment of scatter/gather segments")
        usb-storage: Revert commit 747668db ("usb-storage: Set virt_boundary_mask to avoid SG overflows")
        usbip: Fix free of unallocated memory in vhci tx
        usbip: tools: Fix read_usb_vudc_device() error path handling
        usb: xhci: fix __le32/__le64 accessors in debugfs code
        usb: xhci: fix Immediate Data Transfer endianness
        xhci: Fix use-after-free regression in xhci clear hub TT implementation
        USB: ldusb: fix control-message timeout
        USB: ldusb: use unsigned size format specifiers
        USB: ldusb: fix ring-buffer locking
        USB: Skip endpoints with 0 maxpacket length
        usb: cdns3: gadget: Don't manage pullups
        usb: dwc3: remove the call trace of USBx_GFLADJ
        usb: gadget: configfs: fix concurrent issue between composite APIs
        ...
      3a69c9e5
  3. 02 Nov, 2019 10 commits
    • Linus Torvalds's avatar
      Merge tag '5.4-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6 · 56cfd250
      Linus Torvalds authored
      Pull cifs fix from Steve French:
       "A small smb3 memleak fix"
      
      * tag '5.4-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6:
        fix memory leak in large read decrypt offload
      56cfd250
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-v5.4-rc6' of... · 9d234505
      Linus Torvalds authored
      Merge tag 'hwmon-for-v5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon fixes from Guenter Roeck:
      
       - Fix read timeout problem in ina3221 driver
      
       - Fix wrong bitmask in nct7904 driver
      
      * tag 'hwmon-for-v5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: (ina3221) Fix read timeout issue
        hwmon: (nct7904) Fix the incorrect value of vsen_mask & tcpu_mask & temp_mode in nct7904_data struct.
      9d234505
    • Linus Torvalds's avatar
      Merge tag 'pwm/for-5.4-rc6' of... · e935842a
      Linus Torvalds authored
      Merge tag 'pwm/for-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
      
      Pull pwm fixes from Thierry Reding:
       "It turned out that relying solely on drivers storing all the PWM state
        in hardware was a little premature and causes a number of subtle (and
        some not so subtle) regressions. Revert the offending patch for now"
      
      * tag 'pwm/for-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
        Revert "pwm: Let pwm_get_state() return the last implemented state"
      e935842a
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · f83e148a
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Nine changes, eight in drivers [ufs, target, lpfc x 2, qla2xxx x 4]
        and one core change in sd that fixes an I/O failure on DIF type 3
        devices"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: qla2xxx: stop timer in shutdown path
        scsi: sd: define variable dif as unsigned int instead of bool
        scsi: target: cxgbit: Fix cxgbit_fw4_ack()
        scsi: qla2xxx: Fix partial flash write of MBI
        scsi: qla2xxx: Initialized mailbox to prevent driver load failure
        scsi: lpfc: Honor module parameter lpfc_use_adisc
        scsi: ufs-bsg: Wake the device before sending raw upiu commands
        scsi: lpfc: Check queue pointer before use
        scsi: qla2xxx: fixup incorrect usage of host_byte
      f83e148a
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 8194c28e
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "Our recent cleanup of EEH led to an oops on bare metal machines when
        the cxl (CAPI) driver creates virtual devices for an attached FPGA
        accelerator.
      
        The "secure virtual machine" support we added in v5.4 had a bug if the
        kernel was relocated (moved during boot), in those cases the signature
        of the kernel text wouldn't verify and the Ultravisor would refuse to
        run the VM.
      
        A recent change to disable interrupts before calling
        arch_cpu_idle_dead() caused a WARN_ON() in our bare metal CPU offline
        code to always trigger.
      
        The KUAP (SMAP) support we added for 32-bit Book3S had a bug if the
        address range crossed a segment (256MB) boundary which could lead to
        spurious faults.
      
        Thanks to: Christophe Leroy, Frederic Barrat, Michael Anderson,
        Nicholas Piggin, Sam Bobroff, Thiago Jung Bauermann"
      
      * tag 'powerpc-5.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/powernv: Fix CPU idle to be called with IRQs disabled
        powerpc/prom_init: Undo relocation before entering secure mode
        powerpc/powernv/eeh: Fix oops when probing cxl devices
        powerpc/32s: fix allow/prevent_user_access() when crossing segment boundaries.
      8194c28e
    • Linus Torvalds's avatar
      Merge tag 's390-5.4-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 969a5197
      Linus Torvalds authored
      Pull s390 fixes from Vasily Gorbik:
      
       - Fix cpu idle time accounting
      
       - Fix stack unwinder case when both pt_regs and sp are specified
      
       - Fix information leak via cmm timeout proc handler
      
      * tag 's390-5.4-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390/idle: fix cpu idle time calculation
        s390/unwind: fix mixing regs and sp
        s390/cmm: fix information leak in cmm_timeout_handler()
      969a5197
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · 1204c70d
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix free/alloc races in batmanadv, from Sven Eckelmann.
      
       2) Several leaks and other fixes in kTLS support of mlx5 driver, from
          Tariq Toukan.
      
       3) BPF devmap_hash cost calculation can overflow on 32-bit, from Toke
          Høiland-Jørgensen.
      
       4) Add an r8152 device ID, from Kazutoshi Noguchi.
      
       5) Missing include in ipv6's addrconf.c, from Ben Dooks.
      
       6) Use siphash in flow dissector, from Eric Dumazet. Attackers can
          easily infer the 32-bit secret otherwise etc.
      
       7) Several netdevice nesting depth fixes from Taehee Yoo.
      
       8) Fix several KCSAN reported errors, from Eric Dumazet. For example,
          when doing lockless skb_queue_empty() checks, and accessing
          sk_napi_id/sk_incoming_cpu lockless as well.
      
       9) Fix jumbo packet handling in RXRPC, from David Howells.
      
      10) Bump SOMAXCONN and tcp_max_syn_backlog values, from Eric Dumazet.
      
      11) Fix DMA synchronization in gve driver, from Yangchun Fu.
      
      12) Several bpf offload fixes, from Jakub Kicinski.
      
      13) Fix sk_page_frag() recursion during memory reclaim, from Tejun Heo.
      
      14) Fix ping latency during high traffic rates in hisilicon driver, from
          Jiangfent Xiao.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (146 commits)
        net: fix installing orphaned programs
        net: cls_bpf: fix NULL deref on offload filter removal
        selftests: bpf: Skip write only files in debugfs
        selftests: net: reuseport_dualstack: fix uninitalized parameter
        r8169: fix wrong PHY ID issue with RTL8168dp
        net: dsa: bcm_sf2: Fix IMP setup for port different than 8
        net: phylink: Fix phylink_dbg() macro
        gve: Fixes DMA synchronization.
        inet: stop leaking jiffies on the wire
        ixgbe: Remove duplicate clear_bit() call
        Documentation: networking: device drivers: Remove stray asterisks
        e1000: fix memory leaks
        i40e: Fix receive buffer starvation for AF_XDP
        igb: Fix constant media auto sense switching when no cable is connected
        net: ethernet: arc: add the missed clk_disable_unprepare
        igb: Enable media autosense for the i350.
        igb/igc: Don't warn on fatal read failures when the device is removed
        tcp: increase tcp_max_syn_backlog max value
        net: increase SOMAXCONN to 4096
        netdevsim: Fix use-after-free during device dismantle
        ...
      1204c70d
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-5.4-3' of git://git.linux-nfs.org/projects/anna/linux-nfs · 372bf6c1
      Linus Torvalds authored
      Pull NFS client bugfixes from Anna Schumaker:
       "This contains two delegation fixes (with the RCU lock leak fix marked
        for stable), and three patches to fix destroying the the sunrpc back
        channel.
      
        Stable bugfixes:
      
         - Fix an RCU lock leak in nfs4_refresh_delegation_stateid()
      
        Other fixes:
      
         - The TCP back channel mustn't disappear while requests are
           outstanding
      
         - The RDMA back channel mustn't disappear while requests are
           outstanding
      
         - Destroy the back channel when we destroy the host transport
      
         - Don't allow a cached open with a revoked delegation"
      
      * tag 'nfs-for-5.4-3' of git://git.linux-nfs.org/projects/anna/linux-nfs:
        NFS: Fix an RCU lock leak in nfs4_refresh_delegation_stateid()
        NFSv4: Don't allow a cached open with a revoked delegation
        SUNRPC: Destroy the back channel when we destroy the host transport
        SUNRPC: The RDMA back channel mustn't disappear while requests are outstanding
        SUNRPC: The TCP back channel mustn't disappear while requests are outstanding
      372bf6c1
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20191101' of git://git.kernel.dk/linux-block · 0821de28
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - Two small nvme fixes, one is a fabrics connection fix, the other one
         a cleanup made possible by that fix (Anton, via Keith)
      
       - Fix requeue handling in umb ubd (Anton)
      
       - Fix spin_lock_irq() nesting in blk-iocost (Dan)
      
       - Three small io_uring fixes:
           - Install io_uring fd after done with ctx (me)
           - Clear ->result before every poll issue (me)
           - Fix leak of shadow request on error (Pavel)
      
      * tag 'for-linus-20191101' of git://git.kernel.dk/linux-block:
        iocost: don't nest spin_lock_irq in ioc_weight_write()
        io_uring: ensure we clear io_kiocb->result before each issue
        um-ubd: Entrust re-queue to the upper layers
        nvme-multipath: remove unused groups_only mode in ana log
        nvme-multipath: fix possible io hang after ctrl reconnect
        io_uring: don't touch ctx in setup after ring fd install
        io_uring: Fix leaked shadow_req
      0821de28
    • Linus Torvalds's avatar
      Merge tag 'riscv/for-v5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · e5897c7d
      Linus Torvalds authored
      Pull RISC-V fixes from Paul Walmsley:
       "One fix for PCIe users:
      
         - Fix legacy PCI I/O port access emulation
      
        One set of cleanups:
      
         - Resolve most of the warnings generated by sparse across arch/riscv.
           No functional changes
      
        And one MAINTAINERS update:
      
         - Update Palmer's E-mail address"
      
      * tag 'riscv/for-v5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        MAINTAINERS: Change to my personal email address
        RISC-V: Add PCIe I/O BAR memory mapping
        riscv: for C functions called only from assembly, mark with __visible
        riscv: fp: add missing __user pointer annotations
        riscv: add missing header file includes
        riscv: mark some code and data as file-static
        riscv: init: merge split string literals in preprocessor directive
        riscv: add prototypes for assembly language functions from head.S
      e5897c7d
  4. 01 Nov, 2019 20 commits