This reverts commit 0be0ee71.

I was hoping it would be benign to switch over entirely to FMODE_STREAM,
and we'd have just a couple of small fixups we'd need, but it looks like
we're not quite there yet.

While it worked fine on both my desktop and laptop, they are fairly
similar in other respects, and run mostly the same loads.  Kenneth
Crudup reports that it seems to break both his vmware installation and
the KDE upower service.  In both cases apparently leading to timeouts
due to waitinmg for the f_pos lock.

There are a number of character devices in particular that definitely
want stream-like behavior, but that currently don't get marked as
streams, and as a result get the exclusion between concurrent
read()/write() on the same file descriptor.  Which doesn't work well for
them.

The most obvious example if this is /dev/console and /dev/tty, which use
console_fops and tty_fops respectively (and ptmx_fops for the pty master
side).  It may be that it's just this that causes problems, but we
clearly weren't ready yet.

Because there's a number of other likely common cases that don't have
llseek implementations and would seem to act as stream devices:

  /dev/fuse		(fuse_dev_operations)
  /dev/mcelog		(mce_chrdev_ops)
  /dev/mei0		(mei_fops)
  /dev/net/tun		(tun_fops)
  /dev/nvme0		(nvme_dev_fops)
  /dev/tpm0		(tpm_fops)
  /proc/self/ns/mnt	(ns_file_operations)
  /dev/snd/pcm*		(snd_pcm_f_ops[])

and while some of these could be trivially automatically detected by the
vfs layer when the character device is opened by just noticing that they
have no read or write operations either, it often isn't that obvious.

Some character devices most definitely do use the file position, even if
they don't allow seeking: the firmware update code, for example, uses
simple_read_from_buffer() that does use f_pos, but doesn't allow seeking
back and forth.

We'll revisit this when there's a better way to detect the problem and
fix it (possibly with a coccinelle script to do more of the FMODE_STREAM
annotations).
Reported-by: Kenneth R. Crudup <kenny@panix.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull x86 iopl updates from Ingo Molnar:
 "This implements a nice simplification of the iopl and ioperm code that
  Thomas Gleixner discovered: we can implement the IO privilege features
  of the iopl system call by using the IO permission bitmap in
  permissive mode, while trapping CLI/STI/POPF/PUSHF uses in user-space
  if they change the interrupt flag.

  This implements that feature, with testing facilities and related
  cleanups"

[ "Simplification" may be an over-statement. The main goal is to avoid
  the cli/sti of iopl by effectively implementing the IO port access
  parts of iopl in terms of ioperm.

  This may end up not workign well in case people actually depend on
  cli/sti being available, or if there are mixed uses of iopl and
  ioperm. We will see..       - Linus ]

* 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  x86/ioperm: Fix use of deprecated config option
  x86/entry/32: Clarify register saving in __switch_to_asm()
  selftests/x86/iopl: Extend test to cover IOPL emulation
  x86/ioperm: Extend IOPL config to control ioperm() as well
  x86/iopl: Remove legacy IOPL option
  x86/iopl: Restrict iopl() permission scope
  x86/iopl: Fixup misleading comment
  selftests/x86/ioperm: Extend testing so the shared bitmap is exercised
  x86/ioperm: Share I/O bitmap if identical
  x86/ioperm: Remove bitmap if all permissions dropped
  x86/ioperm: Move TSS bitmap update to exit to user work
  x86/ioperm: Add bitmap sequence number
  x86/ioperm: Move iobitmap data into a struct
  x86/tss: Move I/O bitmap data into a seperate struct
  x86/io: Speedup schedule out of I/O bitmap user
  x86/ioperm: Avoid bitmap allocation if no permissions are set
  x86/ioperm: Simplify first ioperm() invocation logic
  x86/iopl: Cleanup include maze
  x86/tss: Fix and move VMX BUILD_BUG_ON()
  x86/cpu: Unify cpu_init()
  ...

Pull x86 asm updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Cross-arch changes to move the linker sections for NOTES and
     EXCEPTION_TABLE into the RO_DATA area, where they belong on most
     architectures. (Kees Cook)

   - Switch the x86 linker fill byte from x90 (NOP) to 0xcc (INT3), to
     trap jumps into the middle of those padding areas instead of
     sliding execution. (Kees Cook)

   - A thorough cleanup of symbol definitions within x86 assembler code.
     The rather randomly named macros got streamlined around a
     (hopefully) straightforward naming scheme:

        SYM_START(name, linkage, align...)
        SYM_END(name, sym_type)

        SYM_FUNC_START(name)
        SYM_FUNC_END(name)

        SYM_CODE_START(name)
        SYM_CODE_END(name)

        SYM_DATA_START(name)
        SYM_DATA_END(name)

     etc - with about three times of these basic primitives with some
     label, local symbol or attribute variant, expressed via postfixes.

     No change in functionality intended. (Jiri Slaby)

   - Misc other changes, cleanups and smaller fixes"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (67 commits)
  x86/entry/64: Remove pointless jump in paranoid_exit
  x86/entry/32: Remove unused resume_userspace label
  x86/build/vdso: Remove meaningless CFLAGS_REMOVE_*.o
  m68k: Convert missed RODATA to RO_DATA
  x86/vmlinux: Use INT3 instead of NOP for linker fill bytes
  x86/mm: Report actual image regions in /proc/iomem
  x86/mm: Report which part of kernel image is freed
  x86/mm: Remove redundant address-of operators on addresses
  xtensa: Move EXCEPTION_TABLE to RO_DATA segment
  powerpc: Move EXCEPTION_TABLE to RO_DATA segment
  parisc: Move EXCEPTION_TABLE to RO_DATA segment
  microblaze: Move EXCEPTION_TABLE to RO_DATA segment
  ia64: Move EXCEPTION_TABLE to RO_DATA segment
  h8300: Move EXCEPTION_TABLE to RO_DATA segment
  c6x: Move EXCEPTION_TABLE to RO_DATA segment
  arm64: Move EXCEPTION_TABLE to RO_DATA segment
  alpha: Move EXCEPTION_TABLE to RO_DATA segment
  x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment
  x86/vmlinux: Actually use _etext for the end of the text segment
  vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA
  ...

Pull x86 fixes from Ingo Molnar:
 "These are the fixes left over from the v5.4 cycle:

   - Various low level 32-bit entry code fixes and improvements by Andy
     Lutomirski, Peter Zijlstra and Thomas Gleixner.

   - Fix 32-bit Xen PV breakage, by Jan Beulich"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry/32: Fix FIXUP_ESPFIX_STACK with user CR3
  x86/pti/32: Calculate the various PTI cpu_entry_area sizes correctly, make the CPU_ENTRY_AREA_PAGES assert precise
  selftests/x86/sigreturn/32: Invalidate DS and ES when abusing the kernel
  selftests/x86/mov_ss_trap: Fix the SYSENTER test
  x86/entry/32: Fix NMI vs ESPFIX
  x86/entry/32: Unwind the ESPFIX stack earlier on exception entry
  x86/entry/32: Move FIXUP_FRAME after pushing %fs in SAVE_ALL
  x86/entry/32: Use %ss segment where required
  x86/entry/32: Fix IRET exception
  x86/cpu_entry_area: Add guard page for entry stack on 32bit
  x86/pti/32: Size initial_page_table correctly
  x86/doublefault/32: Fix stack canaries in the double fault handler
  x86/xen/32: Simplify ring check in xen_iret_crit_fixup()
  x86/xen/32: Make xen_iret_crit_fixup() independent of frame layout
  x86/stackframe/32: Repair 32-bit Xen PV

Pull x86 PTI updates from Ingo Molnar:
 "Fix reporting bugs of the MDS and TAA mitigation status, if one or
  both are set via a boot option.

  No change to mitigation behavior intended"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation: Fix redundant MDS mitigation message
  x86/speculation: Fix incorrect MDS/TAA mitigation status

Pull x86 platform updates from Ingo Molnar:
 "UV platform updates (with a 'hubless' variant) and Jailhouse updates
  for better UART support"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/jailhouse: Only enable platform UARTs if available
  x86/jailhouse: Improve setup data version comparison
  x86/platform/uv: Account for UV Hubless in is_uvX_hub Ops
  x86/platform/uv: Check EFI Boot to set reboot type
  x86/platform/uv: Decode UVsystab Info
  x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files
  x86/platform/uv: Setup UV functions for Hubless UV Systems
  x86/platform/uv: Add return code to UV BIOS Init function
  x86/platform/uv: Return UV Hubless System Type
  x86/platform/uv: Save OEM_ID from ACPI MADT probe

Pull x86 mm updates from Ingo Molnar:
 "The main changes in this cycle were:

   - A PAT series from Davidlohr Bueso, which simplifies the memtype
     rbtree by using the interval tree helpers. (There's more cleanups
     in this area queued up, but they didn't make the merge window.)

   - Also flip over CONFIG_X86_5LEVEL to default-y. This might draw in a
     few more testers, as all the major distros are going to have
     5-level paging enabled by default in their next iterations.

   - Misc cleanups"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/pat: Rename pat_rbtree.c to pat_interval.c
  x86/mm/pat: Drop the rbt_ prefix from external memtype calls
  x86/mm/pat: Do not pass 'rb_root' down the memtype tree helper functions
  x86/mm/pat: Convert the PAT tree to a generic interval tree
  x86/mm: Clean up the pmd_read_atomic() comments
  x86/mm: Fix function name typo in pmd_read_atomic() comment
  x86/cpu: Clean up intel_tlb_table[]
  x86/mm: Enable 5-level paging support by default

Pull x86 kdump updates from Ingo Molnar:
 "This solves a kdump artifact where encrypted memory contents are
  dumped, instead of unencrypted ones.

  The solution also happens to simplify the kdump code, to everyone's
  delight"

* 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/crash: Align function arguments on opening braces
  x86/kdump: Remove the backup region handling
  x86/kdump: Always reserve the low 1M when the crashkernel option is specified
  x86/crash: Add a forward declaration of struct kimage

Pull x86 hyperv updates from Ingo Molnar:
 "Misc updates to the hyperv guest code:

   - Rework clockevents initialization to better support hibernation

   - Allow guests to enable InvariantTSC

   - Micro-optimize send_ipi_one"

* 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/hyperv: Initialize clockevents earlier in CPU onlining
  x86/hyperv: Allow guests to enable InvariantTSC
  x86/hyperv: Micro-optimize send_ipi_one()

Pull x86 syscall entry updates from Ingo Molnar:
 "These changes relate to the preparatory cleanup of syscall function
  type signatures - to fix indirect call mismatches with Control-Flow
  Integrity (CFI) checking.

  No change in behavior intended"

* 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Use the correct function type for native_set_fixmap()
  syscalls/x86: Fix function types in COND_SYSCALL
  syscalls/x86: Use the correct function type for sys_ni_syscall
  syscalls/x86: Use COMPAT_SYSCALL_DEFINE0 for IA32 (rt_)sigreturn
  syscalls/x86: Wire up COMPAT_SYSCALL_DEFINE0
  syscalls/x86: Use the correct function type in SYSCALL_DEFINE0

Merge branches 'x86-cpu-for-linus' and 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpu and fpu updates from Ingo Molnar:

 - math-emu fixes

 - CPUID updates

 - sanity-check RDRAND output to see whether the CPU at least pretends
   to produce random data

 - various unaligned-access across cachelines fixes in preparation of
   hardware level split-lock detection

 - fix MAXSMP constraints to not allow !CPUMASK_OFFSTACK kernels with
   larger than 512 NR_CPUS

 - misc FPU related cleanups

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Align the x86_capability array to size of unsigned long
  x86/cpu: Align cpu_caps_cleared and cpu_caps_set to unsigned long
  x86/umip: Make the comments vendor-agnostic
  x86/Kconfig: Rename UMIP config parameter
  x86/Kconfig: Enforce limit of 512 CPUs with MAXSMP and no CPUMASK_OFFSTACK
  x86/cpufeatures: Add feature bit RDPRU on AMD
  x86/math-emu: Limit MATH_EMULATION to 486SX compatibles
  x86/math-emu: Check __copy_from_user() result
  x86/rdrand: Sanity-check RDRAND output

* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Use XFEATURE_FP/SSE enum values instead of hardcoded numbers
  x86/fpu: Shrink space allocated for xstate_comp_offsets
  x86/fpu: Update stale variable name in comment

Pull x86 boot updates from Ingo Molnar:
 "The main changes were:

   - Extend the boot protocol to allow future extensions without hitting
     the setup_header size limit.

   - Add quirk to devicetree systems to disable the RTC unless it's
     listed as a supported device.

   - Fix ld.lld linker pedantry"

* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot: Introduce setup_indirect
  x86/boot: Introduce kernel_info.setup_type_max
  x86/boot: Introduce kernel_info
  x86/init: Allow DT configured systems to disable RTC at boot time
  x86/realmode: Explicitly set entry point via ENTRY in linker script

Merge branches 'core-objtool-for-linus', 'x86-cleanups-for-linus' and 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 objtool, cleanup, and apic updates from Ingo Molnar:
 "Objtool:

   - Fix a gawk 5.0 incompatibility in gen-insn-attr-x86.awk. Most
     distros are still on gawk 4.2.x.

  Cleanup:

   - Misc cleanups, plus the removal of obsolete code such as Calgary
     IOMMU support, which code hasn't seen any real testing in a long
     time and there's no known users left.

  apic:

   - Two changes: a cleanup and a fix for an (old) race for oneshot
     threaded IRQ handlers"

* 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/insn: Fix awk regexp warnings

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Remove unused asm/rio.h
  x86: Fix typos in comments
  x86/pci: Remove #ifdef __KERNEL__ guard from <asm/pci.h>
  x86/pci: Remove pci_64.h
  x86: Remove the calgary IOMMU driver
  x86/apic, x86/uprobes: Correct parameter names in kernel-doc comments
  x86/kdump: Remove the unused crash_copy_backup_region()
  x86/nmi: Remove stale EDAC include leftover

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioapic: Rename misnamed functions
  x86/ioapic: Prevent inconsistent state when moving an interrupt

Pull IPMI updates from Corey Minyard:
 "Some small fixes accumulated for IPMI, nothing major"

* tag 'for-linus-5.5-1' of git://github.com/cminyard/linux-ipmi:
  ipmi: fix ipmb_poll()'s return type
  ipmi: kill off 'timespec' usage again
  drivers: ipmi: Support for both IPMB Req and Resp
  ipmi: Fix memory leak in __ipmi_bmc_register
  ipmi: bt-bmc: use devm_platform_ioremap_resource() to simplify code
  ipmi: use %*ph to print small buffer
  ipmi: Don't allow device module unload when in use

Pull i3c updates from Boris Brezillon:
 "Minor fixes and MAINTAINERS updates"

* tag 'i3c/for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  MAINTAINERS: add myself as maintainer of Cadence I3C master controller driver
  MAINTAINERS: Mark linux-i3c mailing list moderated
  i3c: Spelling s/dicovered/discovered/
  i3c: master: use i3c_dev_get_master()

Pull pcmcia updates from Dominik Brodowski:
 "Just a few odd fixes and improvements to the PCMCIA core"

* 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux:
  pcmcia: remove unused dprintk definition
  pcmcia: include <pcmcia/ds.h> for pcmcia_parse_tuple
  pcmcia: include cs_internal.h for missing declarations
  pcmcia: Use dev_get_drvdata where possible
  pcmcia: clean an indentation issues, remove extraneous spaces

Pull spi updates from Mark Brown:
 "Lots of stuff going on in the core for SPI this time around, the two
  big changes both being around time in different forms:

   - A rework of delay times from Alexandru Ardelean which makes the
     ways in which they are specified more consistent between drivers so
     that what's available to clients is less dependent on the hardware
     implementation.

   - Support for PTP timestamping of transfers from Vladimir Oltean,
     useful for use with precision clocks with SPI control interfaces.

   - Big cleanups for the Atmel, PXA2xx and Zynq QSPI drivers"

* tag 'spi-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (119 commits)
  dt-bindings: spi: Convert stm32 QSPI bindings to json-schema
  spi: pic32: Retire dma_request_slave_channel_compat()
  spi: Fix Kconfig indentation
  spi: mediatek: add SPI_CS_HIGH support
  spi: st-ssc4: add missed pm_runtime_disable
  spi: tegra20-slink: add missed clk_unprepare
  spi: tegra20-slink: Use dma_request_chan() directly for channel request
  spi: tegra114: Use dma_request_chan() directly for channel request
  spi: s3c64xx: Use dma_request_chan() directly for channel request
  spi: qup: Use dma_request_chan() directly for channel request
  spi: pl022: Use dma_request_chan() directly for channel request
  spi: imx: Use dma_request_chan() directly for channel request
  spi: fsl-lpspi: Use dma_request_chan() directly for channel request
  spi: atmel: Use dma_request_chan() directly for channel request
  spi: at91-usart: Use dma_request_chan() directly for channel request
  spi: fsl-cpm: Correct the free:ing
  spi: Fix regression to return zero on success instead of positive value
  spi: pxa2xx: Add missed security checks
  spi: nxp-fspi: Use devm API to fix missed unregistration of controller
  spi: omap2-mcspi: Remove redundant checks
  ...

Pull regulator updates from Mark Brown:
 "Another fairly quiet release for the regulator API, some work all
  around including some core work but mostly in specialist or driver
  specific code:

   - Fix for powering off boot-on regulators

   - Enhancements to the coupled regulator support introduced in the
     last release

   - Conversion of a bunch of drivers to the fwnode API for GPIOs

   - Mode support for DA9062

   - New device support for Qualcomm PM1650, PM8004 and PM895 and
     Silergy SR83X

   - Removal of obsolete AB8505 support"

* tag 'regulator-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (49 commits)
  regulator: da9062: Return REGULATOR_MODE_INVALID for invalid mode
  regulator: Fix Kconfig indentation
  regulator: tps6105x: add optional devicetree support
  tps6105x: add optional devicetree support
  regulator: rn5t618: fix rc5t619 ldo10 enable
  regulator: vexpress: Use PTR_ERR_OR_ZERO() to simplify code
  dt-bindings: mfd: da9062: describe buck modes
  regulator: da9062: add of_map_mode support for bucks
  regulator: da9062: refactor buck modes into header
  regulator: stpmic1: Set a default ramp delay value
  regulator: core: Let boot-on regulators be powered off
  regulator: core: Don't try to remove device links if add failed
  regulator: ab8500: Remove SYSCLKREQ from enum ab8505_regulator_id
  regulator: ab8500: Remove AB8505 USB regulator
  regulator: fan53555: add chip id for Silergy SYR83X
  regulator: fixed: add off-on-delay
  dt-bindings: regulator: fixed: add off-on-delay-us property
  regulator: core: Allow generic coupling only for always-on regulators
  regulator: core: Release coupled_rdevs on regulator_init_coupling() error
  regulator: bd70528: Add MODULE_ALIAS to allow module auto loading
  ...

Pull regmap update from Mark Brown:
 "Just one patch for this release removing some dead code"

* tag 'regmap-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: regmap-w1: Drop unreachable code

Pull networking updates from David Miller:
 "Another merge window, another pull full of stuff:

   1) Support alternative names for network devices, from Jiri Pirko.

   2) Introduce per-netns netdev notifiers, also from Jiri Pirko.

   3) Support MSG_PEEK in vsock/virtio, from Matias Ezequiel Vara
      Larsen.

   4) Allow compiling out the TLS TOE code, from Jakub Kicinski.

   5) Add several new tracepoints to the kTLS code, also from Jakub.

   6) Support set channels ethtool callback in ena driver, from Sameeh
      Jubran.

   7) New SCTP events SCTP_ADDR_ADDED, SCTP_ADDR_REMOVED,
      SCTP_ADDR_MADE_PRIM, and SCTP_SEND_FAILED_EVENT. From Xin Long.

   8) Add XDP support to mvneta driver, from Lorenzo Bianconi.

   9) Lots of netfilter hw offload fixes, cleanups and enhancements,
      from Pablo Neira Ayuso.

  10) PTP support for aquantia chips, from Egor Pomozov.

  11) Add UDP segmentation offload support to igb, ixgbe, and i40e. From
      Josh Hunt.

  12) Add smart nagle to tipc, from Jon Maloy.

  13) Support L2 field rewrite by TC offloads in bnxt_en, from Venkat
      Duvvuru.

  14) Add a flow mask cache to OVS, from Tonghao Zhang.

  15) Add XDP support to ice driver, from Maciej Fijalkowski.

  16) Add AF_XDP support to ice driver, from Krzysztof Kazimierczak.

  17) Support UDP GSO offload in atlantic driver, from Igor Russkikh.

  18) Support it in stmmac driver too, from Jose Abreu.

  19) Support TIPC encryption and auth, from Tuong Lien.

  20) Introduce BPF trampolines, from Alexei Starovoitov.

  21) Make page_pool API more numa friendly, from Saeed Mahameed.

  22) Introduce route hints to ipv4 and ipv6, from Paolo Abeni.

  23) Add UDP segmentation offload to cxgb4, Rahul Lakkireddy"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1857 commits)
  libbpf: Fix usage of u32 in userspace code
  mm: Implement no-MMU variant of vmalloc_user_node_flags
  slip: Fix use-after-free Read in slip_open
  net: dsa: sja1105: fix sja1105_parse_rgmii_delays()
  macvlan: schedule bc_work even if error
  enetc: add support Credit Based Shaper(CBS) for hardware offload
  net: phy: add helpers phy_(un)lock_mdio_bus
  mdio_bus: don't use managed reset-controller
  ax88179_178a: add ethtool_op_get_ts_info()
  mlxsw: spectrum_router: Fix use of uninitialized adjacency index
  mlxsw: spectrum_router: After underlay moves, demote conflicting tunnels
  bpf: Simplify __bpf_arch_text_poke poke type handling
  bpf: Introduce BPF_TRACE_x helper for the tracing tests
  bpf: Add bpf_jit_blinding_enabled for !CONFIG_BPF_JIT
  bpf, testing: Add various tail call test cases
  bpf, x86: Emit patchable direct jump as tail call
  bpf: Constant map key tracking for prog array pokes
  bpf: Add poke dependency tracking for prog array maps
  bpf: Add initial poke descriptor table for jit images
  bpf: Move owner type, jited info into array auxiliary data
  ...

Pull crypto updates from Herbert Xu:
 "API:
   - Add library interfaces of certain crypto algorithms for WireGuard
   - Remove the obsolete ablkcipher and blkcipher interfaces
   - Move add_early_randomness() out of rng_mutex

  Algorithms:
   - Add blake2b shash algorithm
   - Add blake2s shash algorithm
   - Add curve25519 kpp algorithm
   - Implement 4 way interleave in arm64/gcm-ce
   - Implement ciphertext stealing in powerpc/spe-xts
   - Add Eric Biggers's scalar accelerated ChaCha code for ARM
   - Add accelerated 32r2 code from Zinc for MIPS
   - Add OpenSSL/CRYPTOGRAMS poly1305 implementation for ARM and MIPS

  Drivers:
   - Fix entropy reading failures in ks-sa
   - Add support for sam9x60 in atmel
   - Add crypto accelerator for amlogic GXL
   - Add sun8i-ce Crypto Engine
   - Add sun8i-ss cryptographic offloader
   - Add a host of algorithms to inside-secure
   - Add NPCM RNG driver
   - add HiSilicon HPRE accelerator
   - Add HiSilicon TRNG driver"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (285 commits)
  crypto: vmx - Avoid weird build failures
  crypto: lib/chacha20poly1305 - use chacha20_crypt()
  crypto: x86/chacha - only unregister algorithms if registered
  crypto: chacha_generic - remove unnecessary setkey() functions
  crypto: amlogic - enable working on big endian kernel
  crypto: sun8i-ce - enable working on big endian
  crypto: mips/chacha - select CRYPTO_SKCIPHER, not CRYPTO_BLKCIPHER
  hwrng: ks-sa - Enable COMPILE_TEST
  crypto: essiv - remove redundant null pointer check before kfree
  crypto: atmel-aes - Change data type for "lastc" buffer
  crypto: atmel-tdes - Set the IV after {en,de}crypt
  crypto: sun4i-ss - fix big endian issues
  crypto: sun4i-ss - hide the Invalid keylen message
  crypto: sun4i-ss - use crypto_ahash_digestsize
  crypto: sun4i-ss - remove dependency on not 64BIT
  crypto: sun4i-ss - Fix 64-bit size_t warnings on sun4i-ss-hash.c
  MAINTAINERS: Add maintainer for HiSilicon SEC V2 driver
  crypto: hisilicon - add DebugFS for HiSilicon SEC
  Documentation: add DebugFS doc for HiSilicon SEC
  crypto: hisilicon - add SRIOV for HiSilicon SEC
  ...

Merge tag 'livepatching-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching updates from Petr Mladek:

 - New API to track system state changes done be livepatch callbacks. It
   helps to maintain compatibility between livepatches.

 - Update Kconfig help text. ORC is another reliable unwinder.

 - Disable generic selftest timeout. Livepatch selftests have their own
   per-operation fine-grained timeouts.

* tag 'livepatching-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  x86/stacktrace: update kconfig help text for reliable unwinders
  livepatch: Selftests of the API for tracking system state changes
  livepatch: Documentation of the new API for tracking system state changes
  livepatch: Allow to distinguish different version of system state changes
  livepatch: Basic API to track system state changes
  livepatch: Keep replaced patches until post_patch callback is called
  selftests/livepatch: Disable the timeout

Pull printk updates from Petr Mladek:

 - Allow to print symbolic error names via new %pe modifier.

 - Use pr_warn() instead of the remaining pr_warning() calls. Fix
   formatting of the related lines.

 - Add VSPRINTF entry to MAINTAINERS.

* tag 'printk-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: (32 commits)
  checkpatch: don't warn about new vsprintf pointer extension '%pe'
  MAINTAINERS: Add VSPRINTF
  tools lib api: Renaming pr_warning to pr_warn
  ASoC: samsung: Use pr_warn instead of pr_warning
  lib: cpu_rmap: Use pr_warn instead of pr_warning
  trace: Use pr_warn instead of pr_warning
  dma-debug: Use pr_warn instead of pr_warning
  vgacon: Use pr_warn instead of pr_warning
  fs: afs: Use pr_warn instead of pr_warning
  sh/intc: Use pr_warn instead of pr_warning
  scsi: Use pr_warn instead of pr_warning
  platform/x86: intel_oaktrail: Use pr_warn instead of pr_warning
  platform/x86: asus-laptop: Use pr_warn instead of pr_warning
  platform/x86: eeepc-laptop: Use pr_warn instead of pr_warning
  oprofile: Use pr_warn instead of pr_warning
  of: Use pr_warn instead of pr_warning
  macintosh: Use pr_warn instead of pr_warning
  idsn: Use pr_warn instead of pr_warning
  ide: Use pr_warn instead of pr_warning
  crypto: n2: Use pr_warn instead of pr_warning
  ...

Pull cgroup updates from Tejun Heo:
 "There are several notable changes here:

   - Single thread migrating itself has been optimized so that it
     doesn't need threadgroup rwsem anymore.

   - Freezer optimization to avoid unnecessary frozen state changes.

   - cgroup ID unification so that cgroup fs ino is the only unique ID
     used for the cgroup and can be used to directly look up live
     cgroups through filehandle interface on 64bit ino archs. On 32bit
     archs, cgroup fs ino is still the only ID in use but it is only
     unique when combined with gen.

   - selftest and other changes"

* 'for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (24 commits)
  writeback: fix -Wformat compilation warnings
  docs: cgroup: mm: Fix spelling of "list"
  cgroup: fix incorrect WARN_ON_ONCE() in cgroup_setup_root()
  cgroup: use cgrp->kn->id as the cgroup ID
  kernfs: use 64bit inos if ino_t is 64bit
  kernfs: implement custom exportfs ops and fid type
  kernfs: combine ino/id lookup functions into kernfs_find_and_get_node_by_id()
  kernfs: convert kernfs_node->id from union kernfs_node_id to u64
  kernfs: kernfs_find_and_get_node_by_ino() should only look up activated nodes
  kernfs: use dumber locking for kernfs_find_and_get_node_by_ino()
  netprio: use css ID instead of cgroup ID
  writeback: use ino_t for inodes in tracepoints
  kernfs: fix ino wrap-around detection
  kselftests: cgroup: Avoid the reuse of fd after it is deallocated
  cgroup: freezer: don't change task and cgroups status unnecessarily
  cgroup: use cgroup->last_bstat instead of cgroup->bstat_pending for consistency
  cgroup: remove cgroup_enable_task_cg_lists() optimization
  cgroup: pids: use atomic64_t for pids->limit
  selftests: cgroup: Run test_core under interfering stress
  selftests: cgroup: Add task migration tests
  ...

Pull workqueue updates from Tejun Heo:
 "There have been sporadic reports of sanity checks in
  destroy_workqueue() failing spuriously over the years. This contains
  the fix and its follow-up changes / fixes.

  There's also a RCU annotation improvement"

* 'for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Add RCU annotation for pwq list walk
  workqueue: Fix pwq ref leak in rescuer_thread()
  workqueue: more destroy_workqueue() fixes
  workqueue: Minor follow-ups to the rescuer destruction change
  workqueue: Fix missing kfree(rescuer) in destroy_workqueue()
  workqueue: Fix spurious sanity check failures in destroy_workqueue()

Pull thread management updates from Christian Brauner:

 - A pidfd's fdinfo file currently contains the field "Pid:\t<pid>"
   where <pid> is the pid of the process in the pid namespace of the
   procfs instance the fdinfo file for the pidfd was opened in.

   The fdinfo file has now gained a new "NSpid:\t<ns-pid1>[\t<ns-pid2>[...]]"
   field which lists the pids of the process in all child pid namespaces
   provided the pid namespace of the procfs instance it is looked up
   under has an ancestoral relationship with the pid namespace of the
   process. If it does not 0 will be shown and no further pid namespaces
   will be listed. Tests included. (Christian Kellner)

 - If the process the pidfd references has already exited, print -1 for
   the Pid and NSpid fields in the pidfd's fdinfo file. Tests included.
   (me)

 - Add CLONE_CLEAR_SIGHAND. This lets callers clear all signal handler
   that are not SIG_DFL or SIG_IGN at process creation time. This
   originated as a feature request from glibc to improve performance and
   elimate races in their posix_spawn() implementation. Tests included.
   (me)

 - Add support for choosing a specific pid for a process with clone3().
   This is the feature which was part of the thread update for v5.4 but
   after a discussion at LPC in Lisbon we decided to delay it for one
   more cycle in order to make the interface more generic. This has now
   done. It is now possible to choose a specific pid in a whole pid
   namespaces (sub)hierarchy instead of just one pid namespace. In order
   to choose a specific pid the caller must have CAP_SYS_ADMIN in all
   owning user namespaces of the target pid namespaces. Tests included.
   (Adrian Reber)

 - Test improvements and extensions. (Andrei Vagin, me)

* tag 'threads-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  selftests/clone3: skip if clone3() is ENOSYS
  selftests/clone3: check that all pids are released on error paths
  selftests/clone3: report a correct number of fails
  selftests/clone3: flush stdout and stderr before clone3() and _exit()
  selftests: add tests for clone3() with *set_tid
  fork: extend clone3() to support setting a PID
  selftests: add tests for clone3()
  tests: test CLONE_CLEAR_SIGHAND
  clone3: add CLONE_CLEAR_SIGHAND
  pid: use pid_has_task() in pidfd_open()
  exit: use pid_has_task() in do_wait()
  pid: use pid_has_task() in __change_pid()
  test: verify fdinfo for pidfd of reaped process
  pidfd: check pid has attached task in fdinfo
  pidfd: add tests for NSpid info in fdinfo
  pidfd: add NSpid entries to fdinfo

Pull EDAC updates from Borislav Petkov:
 "A lot of changes this time around, details below.

  From the next cycle onwards, we'll switch the EDAC tree to topic
  branches (instead of a single edac-for-next branch) which should make
  the changes handling more flexible, hopefully. We'll see.

  Summary:

   - Rework error logging functions to accept a count of errors
     parameter (Hanna Hawa)

   - Part one of substantial EDAC core + ghes_edac driver cleanup
     (Robert Richter)

   - Print additional useful logging information in skx_* (Tony Luck)

   - Improve amd64_edac hw detection + cleanups (Yazen Ghannam)

   - Misc cleanups, fixes and code improvements"

* tag 'edac_for_5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: (35 commits)
  EDAC/altera: Use the Altera System Manager driver
  EDAC/altera: Cleanup the ECC Manager
  EDAC/altera: Use fast register IO for S10 IRQs
  EDAC/ghes: Do not warn when incrementing refcount on 0
  EDAC/Documentation: Describe CPER module definition and DIMM ranks
  EDAC: Unify the mc_event tracepoint call
  EDAC/ghes: Remove intermediate buffer pvt->detail_location
  EDAC/ghes: Fix grain calculation
  EDAC/ghes: Use standard kernel macros for page calculations
  EDAC: Remove misleading comment in struct edac_raw_error_desc
  EDAC/mc: Reduce indentation level in edac_mc_handle_error()
  EDAC/mc: Remove needless zero string termination
  EDAC/mc: Do not BUG_ON() in edac_mc_alloc()
  EDAC: Introduce an mci_for_each_dimm() iterator
  EDAC: Remove EDAC_DIMM_OFF() macro
  EDAC: Replace EDAC_DIMM_PTR() macro with edac_get_dimm() function
  EDAC/amd64: Get rid of the ECC disabled long message
  EDAC/ghes: Fix locking and memory barrier issues
  EDAC/amd64: Check for memory before fully initializing an instance
  EDAC/amd64: Use cached data when checking for ECC
  ...

Pull KVM updates from Paolo Bonzini:
 "ARM:
   - data abort report and injection
   - steal time support
   - GICv4 performance improvements
   - vgic ITS emulation fixes
   - simplify FWB handling
   - enable halt polling counters
   - make the emulated timer PREEMPT_RT compliant

  s390:
   - small fixes and cleanups
   - selftest improvements
   - yield improvements

  PPC:
   - add capability to tell userspace whether we can single-step the
     guest
   - improve the allocation of XIVE virtual processor IDs
   - rewrite interrupt synthesis code to deliver interrupts in virtual
     mode when appropriate.
   - minor cleanups and improvements.

  x86:
   - XSAVES support for AMD
   - more accurate report of nested guest TSC to the nested hypervisor
   - retpoline optimizations
   - support for nested 5-level page tables
   - PMU virtualization optimizations, and improved support for nested
     PMU virtualization
   - correct latching of INITs for nested virtualization
   - IOAPIC optimization
   - TSX_CTRL virtualization for more TAA happiness
   - improved allocation and flushing of SEV ASIDs
   - many bugfixes and cleanups"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits)
  kvm: nVMX: Relax guest IA32_FEATURE_CONTROL constraints
  KVM: x86: Grab KVM's srcu lock when setting nested state
  KVM: x86: Open code shared_msr_update() in its only caller
  KVM: Fix jump label out_free_* in kvm_init()
  KVM: x86: Remove a spurious export of a static function
  KVM: x86: create mmu/ subdirectory
  KVM: nVMX: Remove unnecessary TLB flushes on L1<->L2 switches when L1 use apic-access-page
  KVM: x86: remove set but not used variable 'called'
  KVM: nVMX: Do not mark vmcs02->apic_access_page as dirty when unpinning
  KVM: vmx: use MSR_IA32_TSX_CTRL to hard-disable TSX on guest that lack it
  KVM: vmx: implement MSR_IA32_TSX_CTRL disable RTM functionality
  KVM: x86: implement MSR_IA32_TSX_CTRL effect on CPUID
  KVM: x86: do not modify masked bits of shared MSRs
  KVM: x86: fix presentation of TSX feature in ARCH_CAPABILITIES
  KVM: PPC: Book3S HV: XIVE: Fix potential page leak on error path
  KVM: PPC: Book3S HV: XIVE: Free previous EQ page when setting up a new one
  KVM: nVMX: Assume TLB entries of L1 and L2 are tagged differently if L0 use EPT
  KVM: x86: Unexport kvm_vcpu_reload_apic_access_page()
  KVM: nVMX: add CR4_LA57 bit to nested CR4_FIXED1
  KVM: nVMX: Use semi-colon instead of comma for exit-handlers initialization
  ...

Pull xen updates from Juergen Gross:

 - a small series to remove the build constraint of Xen x86 MCE handling
   to 64-bit only

 - a bunch of minor cleanups

* tag 'for-linus-5.5a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: Fix Kconfig indentation
  xen/mcelog: also allow building for 32-bit kernels
  xen/mcelog: add PPIN to record when available
  xen/mcelog: drop __MC_MSR_MCGCAP
  xen/gntdev: Use select for DMA_SHARED_BUFFER
  xen: mm: make xen_mm_init static
  xen: mm: include <xen/xen-ops.h> for missing declarations

Pull MIPS updates from Paul Burton:
 "The main MIPS changes for 5.5:

   - Atomics-related code sees some rework & cleanup, most notably
     allowing Loongson LL/SC errata workarounds to be more bulletproof &
     their correctness to be checked at build time.

   - Command line setup code is simplified somewhat, resolving various
     corner cases.

   - MIPS kernels can now be built with kcov code coverage support.

   - We can now build with CONFIG_FORTIFY_SOURCE=y.

   - Miscellaneous cleanups.

  And some platform specific changes:

   - We now disable some broken TLB functionality on certain Ingenic
     systems, and JZ4780 systems gain some devicetree nodes to support
     more devices.

   - Loongson support sees a number of cleanups, and we gain initial
     support for Loongson 3A R4 systems.

   - We gain support for MediaTek MT7688-based GARDENA Smart Gateway
     systems.

   - SGI IP27 (Origin 2*) see a number of fixes, cleanups &
     simplifications.

   - SGI IP30 (Octane) systems are now supported"

* tag 'mips_5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (107 commits)
  MIPS: SGI-IP27: Enable ethernet phy on second Origin 200 module
  MIPS: PCI: Fix fake subdevice ID for IOC3
  MIPS: Ingenic: Disable abandoned HPTLB function.
  MIPS: PCI: remember nasid changed by set interrupt affinity
  MIPS: SGI-IP27: Fix crash, when CPUs are disabled via nr_cpus parameter
  mips: add support for folded p4d page tables
  mips: drop __pXd_offset() macros that duplicate pXd_index() ones
  mips: fix build when "48 bits virtual memory" is enabled
  MIPS: math-emu: Reuse name array in debugfs_fpuemu()
  MIPS: allow building with kcov coverage
  MIPS: Loongson64: Drop setup_pcimap
  MIPS: Loongson2ef: Convert to early_printk_8250
  MIPS: Drop CPU_SUPPORTS_UNCACHED_ACCELERATED
  MIPS: Loongson{2ef, 32, 64} convert to generic fw cmdline
  MIPS: Drop pmon.h
  MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
  MIPS: Loongson: Rename LOONGSON1 to LOONGSON32
  MIPS: Loongson: Fix return value of loongson_hwmon_init
  MIPS: add support for SGI Octane (IP30)
  MIPS: PCI: make phys_to_dma/dma_to_phys for pci-xtalk-bridge common
  ...

Pull m68k updates from Geert Uytterhoeven:

 - Atari Falcon IDE platform driver conversion for module autoload

 - defconfig updates (including enablement of Amiga ICY I2C)

 - small fixes and cleanups

* tag 'm68k-for-v5.5-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/atari: Convert Falcon IDE drivers to platform drivers
  m68k: defconfig: Enable ICY I2C and LTC2990 on Amiga
  m68k: defconfig: Update defconfigs for v5.4-rc1
  m68k: q40: Fix info-leak in rtc_ioctl
  nubus: Remove cast to void pointer

Pull RAS updates from Borislav Petkov:

 - Fully reworked thermal throttling notifications, there should be no
   more spamming of dmesg (Srinivas Pandruvada and Benjamin Berg)

 - More enablement for the Intel-compatible CPUs Zhaoxin (Tony W
   Wang-oc)

 - PPIN support for Icelake (Tony Luck)

* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce/therm_throt: Optimize notifications of thermal throttle
  x86/mce: Add Xeon Icelake to list of CPUs that support PPIN
  x86/mce: Lower throttling MCE messages' priority to warning
  x86/mce: Add Zhaoxin LMCE support
  x86/mce: Add Zhaoxin CMCI support
  x86/mce: Add Zhaoxin MCE support
  x86/mce/amd: Make disable_err_thresholding() static

Pull x86 microcode updates from Borislav Petkov:
 "This converts the late loading method to load the microcode in
  parallel (vs sequentially currently). The patch remained in linux-next
  for the maximum amount of time so that any potential and hard to debug
  fallout be minimized.

  Now cloud folks have their milliseconds back but all the normal people
  should use early loading anyway :-)"

* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/intel: Issue the revision updated message only on the BSP
  x86/microcode: Update late microcode in parallel
  x86/microcode/amd: Fix two -Wunused-but-set-variable warnings

Pull s390 updates from Vasily Gorbik:

 - Adjust PMU device drivers registration to avoid WARN_ON and few other
   perf improvements.

 - Enhance tracing in vfio-ccw.

 - Few stack unwinder fixes and improvements, convert get_wchan custom
   stack unwinding to generic api usage.

 - Fixes for mm helpers issues uncovered with tests validating
   architecture page table helpers.

 - Fix noexec bit handling when hardware doesn't support it.

 - Fix memleak and unsigned value compared with zero bugs in crypto
   code. Minor code simplification.

 - Fix crash during kdump with kasan enabled kernel.

 - Switch bug and alternatives from asm to asm_inline to improve
   inlining decisions.

 - Use 'depends on cc-option' for MARCH and TUNE options in Kconfig, add
   z13s and z14 ZR1 to TUNE descriptions.

 - Minor head64.S simplification.

 - Fix physical to logical CPU map for SMT.

 - Several cleanups in qdio code.

 - Other minor cleanups and fixes all over the code.

* tag 's390-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (41 commits)
  s390/cpumf: Adjust registration of s390 PMU device drivers
  s390/smp: fix physical to logical CPU map for SMT
  s390/early: move access registers setup in C code
  s390/head64: remove unnecessary vdso_per_cpu_data setup
  s390/early: move control registers setup in C code
  s390/kasan: support memcpy_real with TRACE_IRQFLAGS
  s390/crypto: Fix unsigned variable compared with zero
  s390/pkey: use memdup_user() to simplify code
  s390/pkey: fix memory leak within _copy_apqns_from_user()
  s390/disassembler: don't hide instruction addresses
  s390/cpum_sf: Assign error value to err variable
  s390/cpum_sf: Replace function name in debug statements
  s390/cpum_sf: Use consistant debug print format for sampling
  s390/unwind: drop unnecessary code around calling ftrace_graph_ret_addr()
  s390: add error handling to perf_callchain_kernel
  s390: always inline current_stack_pointer()
  s390/mm: add mm_pxd_folded() checks to pxd_free()
  s390/mm: properly clear _PAGE_NOEXEC bit when it is not supported
  s390/mm: simplify page table helpers for large entries
  s390/mm: make pmd/pud_bad() report large entries as bad
  ...

Daniel Borkmann says:

====================
pull-request: bpf-next 2019-11-26

The following pull-request contains BPF updates for your *net-next* tree.

We've added 2 non-merge commits during the last 1 day(s) which contain
a total of 2 files changed, 14 insertions(+), 3 deletions(-).

The main changes, 2 small fixes are:

1) Fix libbpf out of tree compilation which complained about unknown u32
   type used in libbpf_find_vmlinux_btf_id() which needs to be __u32 instead,
   from Andrii Nakryiko.

2) Follow-up fix for the prior BPF mmap series where kbuild bot complained
   about missing vmalloc_user_node_flags() for no-MMU, also from Andrii Nakryiko.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull arm64 updates from Catalin Marinas:
 "Apart from the arm64-specific bits (core arch and perf, new arm64
  selftests), it touches the generic cow_user_page() (reviewed by
  Kirill) together with a macro for x86 to preserve the existing
  behaviour on this architecture.

  Summary:

   - On ARMv8 CPUs without hardware updates of the access flag, avoid
     failing cow_user_page() on PFN mappings if the pte is old. The
     patches introduce an arch_faults_on_old_pte() macro, defined as
     false on x86. When true, cow_user_page() makes the pte young before
     attempting __copy_from_user_inatomic().

   - Covert the synchronous exception handling paths in
     arch/arm64/kernel/entry.S to C.

   - FTRACE_WITH_REGS support for arm64.

   - ZONE_DMA re-introduced on arm64 to support Raspberry Pi 4

   - Several kselftest cases specific to arm64, together with a
     MAINTAINERS update for these files (moved to the ARM64 PORT entry).

   - Workaround for a Neoverse-N1 erratum where the CPU may fetch stale
     instructions under certain conditions.

   - Workaround for Cortex-A57 and A72 errata where the CPU may
     speculatively execute an AT instruction and associate a VMID with
     the wrong guest page tables (corrupting the TLB).

   - Perf updates for arm64: additional PMU topologies on HiSilicon
     platforms, support for CCN-512 interconnect, AXI ID filtering in
     the IMX8 DDR PMU, support for the CCPI2 uncore PMU in ThunderX2.

   - GICv3 optimisation to avoid a heavy barrier when accessing the
     ICC_PMR_EL1 register.

   - ELF HWCAP documentation updates and clean-up.

   - SMC calling convention conduit code clean-up.

   - KASLR diagnostics printed during boot

   - NVIDIA Carmel CPU added to the KPTI whitelist

   - Some arm64 mm clean-ups: use generic free_initrd_mem(), remove
     stale macro, simplify calculation in __create_pgd_mapping(), typos.

   - Kconfig clean-ups: CMDLINE_FORCE to depend on CMDLINE, choice for
     endinanness to help with allmodconfig"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
  arm64: Kconfig: add a choice for endianness
  kselftest: arm64: fix spelling mistake "contiguos" -> "contiguous"
  arm64: Kconfig: make CMDLINE_FORCE depend on CMDLINE
  MAINTAINERS: Add arm64 selftests to the ARM64 PORT entry
  arm64: kaslr: Check command line before looking for a seed
  arm64: kaslr: Announce KASLR status on boot
  kselftest: arm64: fake_sigreturn_misaligned_sp
  kselftest: arm64: fake_sigreturn_bad_size
  kselftest: arm64: fake_sigreturn_duplicated_fpsimd
  kselftest: arm64: fake_sigreturn_missing_fpsimd
  kselftest: arm64: fake_sigreturn_bad_size_for_magic0
  kselftest: arm64: fake_sigreturn_bad_magic
  kselftest: arm64: add helper get_current_context
  kselftest: arm64: extend test_init functionalities
  kselftest: arm64: mangle_pstate_invalid_mode_el[123][ht]
  kselftest: arm64: mangle_pstate_invalid_daif_bits
  kselftest: arm64: mangle_pstate_invalid_compat_toggle and common utils
  kselftest: arm64: extend toplevel skeleton Makefile
  drivers/perf: hisi: update the sccl_id/ccl_id for certain HiSilicon platform
  arm64: mm: reserve CMA and crashkernel in ZONE_DMA32
  ...

Merge tag 'linux-kselftest-5.5-rc1-kunit' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest KUnit support gtom Shuah Khan:
 "This adds KUnit, a lightweight unit testing and mocking framework for
  the Linux kernel from Brendan Higgins.

  KUnit is not an end-to-end testing framework. It is currently
  supported on UML and sub-systems can write unit tests and run them in
  UML env. KUnit documentation is included in this update.

  In addition, this Kunit update adds 3 new kunit tests:

   - proc sysctl test from Iurii Zaikin

   - the 'list' doubly linked list test from David Gow

   - ext4 tests for decoding extended timestamps from Iurii Zaikin

  In the future KUnit will be linked to Kselftest framework to provide a
  way to trigger KUnit tests from user-space"

* tag 'linux-kselftest-5.5-rc1-kunit' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (23 commits)
  lib/list-test: add a test for the 'list' doubly linked list
  ext4: add kunit test for decoding extended timestamps
  Documentation: kunit: Fix verification command
  kunit: Fix '--build_dir' option
  kunit: fix failure to build without printk
  MAINTAINERS: add proc sysctl KUnit test to PROC SYSCTL section
  kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()
  MAINTAINERS: add entry for KUnit the unit testing framework
  Documentation: kunit: add documentation for KUnit
  kunit: defconfig: add defconfigs for building KUnit tests
  kunit: tool: add Python wrappers for running KUnit tests
  kunit: test: add tests for KUnit managed resources
  kunit: test: add the concept of assertions
  kunit: test: add tests for kunit test abort
  kunit: test: add support for test abort
  objtool: add kunit_try_catch_throw to the noreturn list
  kunit: test: add initial tests
  lib: enable building KUnit in lib/
  kunit: test: add the concept of expectations
  kunit: test: add assertion printing library
  ...

Merge tag 'linux-kselftest-5.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This consists of several fixes to tests and framework.

  Masami Hiramatsu fixed several tests to build and run correctly on arm
  and other 32bit architectures"

* tag 'linux-kselftest-5.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: sync: Fix cast warnings on arm
  selftests: net: Fix printf format warnings on arm
  selftests: net: Use size_t and ssize_t for counting file size
  selftests: vm: Build/Run 64bit tests only on 64bit arch
  selftests: proc: Make va_max 1MB
  kselftest: Fix NULL INSTALL_PATH for TARGETS runlist
  selftests: Move kselftest_module.sh into kselftest/
  selftests: gen_kselftest_tar.sh: Do not clobber kselftest/
  selftests: breakpoints: Fix a typo of function name
  selftests: Fix O= and KBUILD_OUTPUT handling for relative paths

Merge in networking bug fixes for merge window.
Signed-off-by: David S. Miller <davem@davemloft.net>

u32 is not defined for libbpf when compiled outside of kernel sources (e.g.,
in Github projection). Use __u32 instead.

Fixes: b8c54ea4 ("libbpf: Add support to attach to fentry/fexit tracing progs")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191125212948.1163343-1-andriin@fb.com