1. 17 Nov, 2019 4 commits
    • Christoph Hellwig's avatar
      riscv: add nommu support · 6bd33e1e
      Christoph Hellwig authored
      The kernel runs in M-mode without using page tables, and thus can't run
      bare metal without help from additional firmware.
      
      Most of the patch is just stubbing out code not needed without page
      tables, but there is an interesting detail in the signals implementation:
      
       - The normal RISC-V syscall ABI only implements rt_sigreturn as VDSO
         entry point, but the ELF VDSO is not supported for nommu Linux.
         We instead copy the code to call the syscall onto the stack.
      
      In addition to enabling the nommu code a new defconfig for a small
      kernel image that can run in nommu mode on qemu is also provided, to run
      a kernel in qemu you can use the following command line:
      
      qemu-system-riscv64 -smp 2 -m 64 -machine virt -nographic \
      	-kernel arch/riscv/boot/loader \
      	-drive file=rootfs.ext2,format=raw,id=hd0 \
      	-device virtio-blk-device,drive=hd0
      
      Contains contributions from Damien Le Moal <Damien.LeMoal@wdc.com>.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
      [paul.walmsley@sifive.com: updated to apply; add CONFIG_MMU guards
       around PCI_IOBASE definition to fix build issues; fixed checkpatch
       issues; move the PCI_IO_* and VMEMMAP address space macros along
       with the others; resolve sparse warning]
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      6bd33e1e
    • Christoph Hellwig's avatar
      riscv: clear the instruction cache and all registers when booting · 9e806356
      Christoph Hellwig authored
      When we get booted we want a clear slate without any leaks from previous
      supervisors or the firmware.  Flush the instruction cache and then clear
      all registers to known good values.  This is really important for the
      upcoming nommu support that runs on M-mode, but can't really harm when
      running in S-mode either.  Vaguely based on the concepts from opensbi.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      9e806356
    • Damien Le Moal's avatar
      riscv: read the hart ID from mhartid on boot · accb9dbc
      Damien Le Moal authored
      When in M-Mode, we can use the mhartid CSR to get the ID of the running
      HART. Doing so, direct M-Mode boot without firmware is possible.
      Signed-off-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
      Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
      Reviewed-by: default avatarAtish Patra <atish.patra@wdc.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      accb9dbc
    • Christoph Hellwig's avatar
      riscv: provide native clint access for M-mode · fcdc6537
      Christoph Hellwig authored
      RISC-V has the concept of a cpu level interrupt controller.  The
      interface for it is split between a standardized part that is exposed
      as bits in the mstatus/sstatus register and the mie/mip/sie/sip
      CRS.  But the bit to actually trigger IPIs is not standardized and
      just mentioned as implementable using MMIO.
      
      Add support for IPIs using MMIO using the SiFive clint layout (which
      is also shared by Ariane, Kendryte and the Qemu virt platform).
      Additionally the MMIO block also supports the time value and timer
      compare registers, so they are also set up using the same OF node.
      Support for other layouts should also be relatively easy to add in the
      future.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
      [paul.walmsley@sifive.com: update include guard format; fix checkpatch
       issues; minor commit message cleanup]
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      fcdc6537
  2. 13 Nov, 2019 5 commits
  3. 05 Nov, 2019 3 commits
  4. 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
  5. 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
  6. 01 Nov, 2019 16 commits