Pull dma_zalloc_coherent() removal from Christoph Hellwig:
 "We've always had a weird situation around dma_zalloc_coherent. To
  safely support mapping the allocations to userspace major
  architectures like x86 and arm have always zeroed allocations from
  dma_alloc_coherent, but a couple other architectures were missing that
  zeroing either always or in corner cases.

  Then later we grew anothe dma_zalloc_coherent interface to explicitly
  request zeroing, but that just added __GFP_ZERO to the allocation
  flags, which for some allocators that didn't end up using the page
  allocator ended up being a no-op and still not zeroing the
  allocations.

  So for this merge window I fixed up all remaining architectures to
  zero the memory in dma_alloc_coherent, and made dma_zalloc_coherent a
  no-op wrapper around dma_alloc_coherent, which fixes all of the above
  issues.

  dma_zalloc_coherent is now pointless and can go away, and Luis helped
  me writing a cocchinelle script and patch series to kill it, which I
  think we should apply now just after -rc1 to finally settle these
  issue"

* tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: remove dma_zalloc_coherent()
  cross-tree: phase out dma_zalloc_coherent() on headers
  cross-tree: phase out dma_zalloc_coherent()

Pull KVM fixes from Radim Krčmář:
 "Minor fixes for new code, corner cases, and documentation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  x86/kvm/nVMX: don't skip emulated instruction twice when vmptr address is not backed
  Documentation/virtual/kvm: Update URL for AMD SEV API specification
  KVM/VMX: Avoid return error when flush tlb successfully in the hv_remote_flush_tlb_with_range()
  kvm: sev: Fail KVM_SEV_INIT if already initialized
  KVM: validate userspace input in kvm_clear_dirty_log_protect()
  KVM: x86: Fix bit shifting in update_intel_pt_cfg

Pull more drm fixes from Daniel Vetter:
 "Dave sends out his pull, everybody remembers holidays are over :-)

  Since Dave's already in weekend mode and it was quite a few patches I
  figured better to apply all the pulls and forward them to you. Hence
  here 2nd part of bugfixes for -rc2.

  nouveau:
   - backlight fix
   - falcon register access fix
   - fan fix.

  i915:
   - Disable PSR for Apple panels
   - Broxton ERR_PTR error state fix
   - Kabylake VECS workaround fix
   - Unwind failure on pinning the gen7 ppgtt
   - GVT workload request allocation fix

  core:
   - Fix fb-helper to work correctly with SDL 1.2 bugs
   - Fix lockdep warning in the atomic ioctl and setproperty"

* tag 'drm-fixes-2019-01-11-1' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/falcon: avoid touching registers if engine is off
  drm/nouveau: Don't disable polling in fallback mode
  drm/nouveau: register backlight on pascal and newer
  drm: Fix documentation generation for DP_DPCD_QUIRK_NO_PSR
  drm/i915: init per-engine WAs for all engines
  drm/i915: Unwind failure on pinning the gen7 ppgtt
  drm/i915: Skip the ERR_PTR error state
  drm/i915: Disable PSR in Apple panels
  gpu/drm: Fix lock held when returning to user space.
  drm/fb-helper: Ignore the value of fb_var_screeninfo.pixclock
  drm/fb-helper: Partially bring back workaround for bugs of SDL 1.2
  drm/i915/gvt: Fix workload request allocation before request add

Pull i2c fixes from Wolfram Sang:
 "I2C has one core and one driver bugfix for you"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: tegra: Fix Maximum transfer size
  i2c: dev: prevent adapter retries and timeout being set as minus value

Pull arm64 fixes from Will Deacon:
 "Another handful of arm64 fixes here. Most of the complication comes
  from improving our kpti code to avoid lengthy pauses (30+ seconds)
  during boot when we rewrite the page tables. There are also a couple
  of IORT fixes that came in via Lorenzo.

  Summary:

   - Don't error in kexec_file_load if kaslr-seed is missing in
     device-tree

   - Fix incorrect argument type passed to iort_match_node_callback()

   - Fix IORT build failure when CONFIG_IOMMU_API=n

   - Fix kpti performance regression with new rodata default option

   - Typo fix"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: kexec_file: return successfully even if kaslr-seed doesn't exist
  ACPI/IORT: Fix rc_dma_get_range()
  arm64: kpti: Avoid rewriting early page tables when KASLR is enabled
  arm64: asm-prototypes: Fix fat-fingered typo in comment
  ACPI/IORT: Fix build when CONFIG_IOMMU_API=n

Pull ceph updates from Ilya Dryomov:
 "A patch to allow setting abort_on_full and a fix for an old "rbd
  unmap" edge case, marked for stable"

* tag 'ceph-for-5.0-rc2' of git://github.com/ceph/ceph-client:
  rbd: don't return 0 on unmap if RBD_DEV_FLAG_REMOVING is set
  ceph: use vmf_error() in ceph_filemap_fault()
  libceph: allow setting abort_on_full for rbd

Pull perf tooling updates from Ingo Molnar:
 "Tooling changes only: fixes and a few stray improvements.

  Most of the diffstat is dominated by a PowerPC related fix of system
  call trace output beautification that allows us to (again) use the
  UAPI header version and sync up with the kernel's version of PowerPC
  system call names in the arch/powerpc/kernel/syscalls/syscall.tbl
  header"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
  tools headers powerpc: Remove unistd.h
  perf powerpc: Rework syscall table generation
  perf symbols: Add 'arch_cpu_idle' to the list of kernel idle symbols
  tools include uapi: Sync linux/if_link.h copy with the kernel sources
  tools include uapi: Sync linux/vhost.h with the kernel sources
  tools include uapi: Sync linux/fs.h copy with the kernel sources
  perf beauty: Switch from using uapi/linux/fs.h to uapi/linux/mount.h
  tools include uapi: Grab a copy of linux/mount.h
  perf top: Lift restriction on using callchains without "sym" in --sort
  tools lib traceevent: Remove tep_data_event_from_type() API
  tools lib traceevent: Rename tep_is_file_bigendian() to tep_file_bigendian()
  tools lib traceevent: Changed return logic of tep_register_event_handler() API
  tools lib traceevent: Changed return logic of trace_seq_printf() and trace_seq_vprintf() APIs
  tools lib traceevent: Rename struct cmdline to struct tep_cmdline
  tools lib traceevent: Initialize host_bigendian at tep_handle allocation
  tools lib traceevent: Introduce new libtracevent API: tep_override_comm()
  perf tests: Add a test for the ARM 32-bit [vectors] page
  perf tools: Make find_vdso_map() more modular
  perf trace: Fix alignment for [continued] lines
  perf trace: Fix ')' placement in "interrupted" syscall lines
  ...

Since commit 09abb5e3 ("KVM: nVMX: call kvm_skip_emulated_instruction
in nested_vmx_{fail,succeed}") nested_vmx_failValid() results in
kvm_skip_emulated_instruction() so doing it again in handle_vmptrld() when
vmptr address is not backed is wrong, we end up advancing RIP twice.

Fixes: fca91f6d ("kvm: nVMX: Set VM instruction error for VMPTRLD of unbacked page")
Reported-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

The URL of [api-spec] in Documentation/virtual/kvm/amd-memory-encryption.rst
is no longer valid, replaced space with underscore.
Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

The "ret" is initialized to be ENOTSUPP. The return value of
__hv_remote_flush_tlb_with_range() will be Or with "ret" when ept
table potiners are mismatched. This will cause return ENOTSUPP even if
flush tlb successfully. This patch is to fix the issue and set
"ret" to 0.

Fixes: a5c214da ("KVM/VMX: Change hv flush logic when ept tables are mismatched.")
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

By code inspection, it was found that multiple calls to KVM_SEV_INIT
could deplete asid bits and overwrite kvm_sev_info's regions_list.

Multiple calls to KVM_SVM_INIT is not likely to occur with QEMU, but this
should likely be fixed anyway.

This code is serialized by kvm->lock.

Fixes: 1654efcb ("KVM: SVM: Add KVM_SEV_INIT command")
Reported-by: Cfir Cohen <cfir@google.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

The function at issue does not fully validate the content of the
structure pointed by the log parameter, though its content has just been
copied from userspace and lacks validation. Fix that.

Moreover, change the type of n to unsigned long as that is the type
returned by kvm_dirty_bitmap_bytes().
Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com>
Reported-by: syzbot+028366e52c9ace67deb3@syzkaller.appspotmail.com
[Squashed the fix from Paolo. - Radim.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

ctl_bitmask in pt_desc is of type u64. When an integer like 0xf is
being left shifted more than 32 bits, the behavior is undefined.

Fix this by adding suffix ULL to integer 0xf.

Addresses-Coverity-ID: 1476095 ("Bad bit shift operation")
Fixes: 6c0f0bba ("KVM: x86: Introduce a function to initialize the PT configuration")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Luwei Kang <luwei.kang@intel.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

Pull x86 fixes from Ingo Molnar:
 "A 32-bit build fix, CONFIG_RETPOLINE fixes and rename CONFIG_RESCTRL
  to CONFIG_X86_RESCTRL"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE
  x86/cache: Rename config option to CONFIG_X86_RESCTRL
  samples/seccomp: Fix 32-bit build

Pull ACPI fixes from Rafael Wysocki:
 "Fix a build failure introduced recently, fix the xpower PMIC ACPI
  driver, clean up the handling of duplicate entries in _PRx power
  resource lists and fix addresses in NUMA-related messages on 32-bit
  with PAE.

  Specifics:

   - Fix build failures with both CONFIG_NLS and CONFIG_PCI unset that
     can occur since ACPI can be built without PCI now (Sinan Kaya).

   - Clean up the handling of duplicate entries in power resource lists
     returned by _PRx evaluation to avoid triggering WARN_ON() on
     attempts to add duplicate symlinks in sysfs (Hans de Goede).

   - Fix issues with the TS current-source switching on systems using
     the xpower PMIC by avoiding to update unrelated bits in the TS
     pin-ctrl register and avoiding to unconditionally enable TS
     current-source on systems where it is not used (Hans de Goede).

   - Fix addresses in NUMA-related messages on 32-bit with PAE which can
     be truncated due to integer type conversions (Chao Fan)"

* tag 'acpi-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PMIC: xpower: Fix TS-pin current-source handling
  ACPI: NUMA: Use correct type for printing addresses on i386-PAE
  ACPI: power: Skip duplicate power resource references in _PRx
  ACPI: Fix build failure when CONFIG_NLS is set to 'n'

Pull power management updates from Rafael Wysocki:
 "These fix fallout after starting to use hrtimers in the runtime PM
  framework, fix a few cpufreq issues, fix a recently broken reference
  to cpuidle documentation, update MAINTAINERS entries for cpufreq and
  cpuidle and make the recently added system suspend and resume support
  in devfreq actually work.

  Specifics:

   - Prevent integer overflows from occurring on 32-bit when converting
     milliseconds to nanoseconds in the runtime PM framework and update
     comments that still refer to jiffies in it (Vincent Guittot,
     Ladislav Michl).

   - Fix the SCMI cpufreq driver to always use the same frequency units
     for arch_set_freq_scale() and make the scale-invariant load
     tracking acutally work with this driver (Quentin Perret).

   - Fix freeing of dynamic OPPs in the SCPI and SCMI cpufreq drivers
     broken during the 4.20 defelopment cycle (Viresh Kumar).

   - Prevent the cpufreq core from attempting to return the current
     frequency of offline CPUs (Sudeep Holla).

   - Add devfreq suspend and resume hooks (missed previously) to the PM
     core to make the recently added system suspend and resume support
     in devfreq actually work (Lukasz Luba).

   - Update MAINTAINERS entries for cpufreq and cpuidle, mostly to add
     references to new/current documentation to them (Rafael Wysocki).

   - Fix a recently broken reference to cpuidle documentation (Otto
     Sabart)"

* tag 'pm-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM-runtime: Fix autosuspend_delay on 32bits arch
  PM-runtime: Fix 'jiffies' in comments after switch to hrtimers
  cpufreq: scmi: Fix frequency invariance in slow path
  doc: trace: fix reference to cpuidle documentation file
  cpufreq: check if policy is inactive early in __cpufreq_get()
  cpufreq: scpi/scmi: Fix freeing of dynamic OPPs
  cpuidle / Documentation: Update cpuidle MAINTAINERS entry
  cpufreq / Documentation: Update cpufreq MAINTAINERS entry
  PM: sleep: call devfreq suspend/resume

Pull drm fixes from Dave Airlie:
 "Not a huge amount for rc2, assume the usual quiet period, and rc3 will
  be most of it.

  amdgpu:
   - Powerplay fixes
   - Virtual display pinning fixes
   - Golden register updates for Vega
   - Pitch and gem size validation fixes
   - SR-IOV init error fix
   - Pagetables in system RAM disable for some Raven system
   - DP-MST resume fixes

  tc358767 bridge:
   - fix to work with displayport connector"

* tag 'drm-fixes-2019-01-11' of git://anongit.freedesktop.org/drm/drm: (26 commits)
  drm/amdgpu: disable system memory page tables for now
  drm/amdgpu: set WRITE_BURST_LENGTH to 64B to workaround SDMA1 hang
  drm/amdgpu: fix CPDMA hang in PRT mode for VEGA20
  drm/bridge: tc358767: use DP connector if no panel set
  drm/bridge: tc358767: fix output H/V syncs
  drm/bridge: tc358767: reject modes which require too much BW
  drm/bridge: tc358767: fix initial DP0/1_SRCCTRL value
  drm/bridge: tc358767: fix single lane configuration
  drm/bridge: tc358767: add defines for DP1_SRCCTRL & PHY_2LANE
  drm/bridge: tc358767: add bus flags
  drm/dp_mst: Add __must_check to drm_dp_mst_topology_mgr_resume()
  drm/amdgpu: Don't fail resume process if resuming atomic state fails
  drm/amdgpu: Don't ignore rc from drm_dp_mst_topology_mgr_resume()
  drm/amdgpu: validate user GEM object size
  drm/amdgpu: validate user pitch alignment
  drm/amd/powerplay: drop the unnecessary uclk hard min setting
  drm/amd/powerplay: avoid possible buffer overflow
  drm/amd/powerplay: create pp_od_clk_voltage device file under OD support
  drm/amd/powerplay: update OD support flag for SKU with no OD capabilities
  drm/amdgpu: make gfx9 enter into rlc safe mode when set MGCG
  ...

In kexec_file_load, kaslr-seed property of the current dtb will be deleted
any way before setting a new value if possible. It doesn't matter whether
it exists in the current dtb.

So "ret" should be reset to 0 here.

Fixes: commit 884143f6 ("arm64: kexec_file: add kaslr support")
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

When executed for a PCI_ROOT_COMPLEX type, iort_match_node_callback()
expects the opaque pointer argument to be a PCI bus device. At the
moment rc_dma_get_range() passes the PCI endpoint instead of the bus,
and we've been lucky to have pci_domain_nr(ptr) return 0 instead of
crashing. Pass the bus device to iort_scan_node().

Fixes: 5ac65e8c ("ACPI/IORT: Support address size limit for root complexes")
Reported-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Cc: stable@vger.kernel.org
Cc: Will Deacon <will.deacon@arm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: Will Deacon <will.deacon@arm.com>

Merge tag 'drm-intel-fixes-2019-01-11' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

i915 fixes for v5.0-rc2:
- Disable PSR for Apple panels
- Broxton ERR_PTR error state fix
- Kabylake VECS workaround fix
- Unwind failure on pinning the gen7 ppgtt
- GVT workload request allocation fix
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87pnt35z8h.fsf@intel.com

Merge tag 'drm-misc-fixes-2019-01-10-1' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Second pull request, drm-misc-fixes for v5.0-rc2:
- Fix fb-helper to work correctly with SDL 1.2 bugs.
- Fix lockdep warning in the atomic ioctl and setproperty.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2cf24f5c-2b1f-befa-8d08-058661146b61@linux.intel.com

* acpi-pci:
  ACPI: Fix build failure when CONFIG_NLS is set to 'n'

* acpi-power:
  ACPI: power: Skip duplicate power resource references in _PRx

* acpi-misc:
  ACPI: NUMA: Use correct type for printing addresses on i386-PAE

* pm-cpuidle:
  doc: trace: fix reference to cpuidle documentation file
  cpuidle / Documentation: Update cpuidle MAINTAINERS entry

* pm-cpufreq:
  cpufreq: scmi: Fix frequency invariance in slow path
  cpufreq: check if policy is inactive early in __cpufreq_get()
  cpufreq: scpi/scmi: Fix freeing of dynamic OPPs
  cpufreq / Documentation: Update cpufreq MAINTAINERS entry

* pm-sleep:
  PM: sleep: call devfreq suspend/resume

3 nouveau fixes:
one backlight, falcon register access, and a fan fix.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv4MHr=Rq3FkZFTYWPc7o5-dTWFysXB=wN2L91SYeFbzkQ@mail.gmail.com

Merge tag 'perf-core-for-mingo-5.0-20190110' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core fixes and improvements from Arnaldo Carvalho de Melo:

perf trace:

  Ravi Bangoria:

  - Rework PowerPC syscall table generation, now using a .tbl file just like
    x86_64 and S/390, also silencing a tools build warning about headers out of
    sync with the kernel sources.

tools include uapi:

  Arnaldo Carvalho de Melo:

  - Sync linux/if_link.h copy with the kernel sources, silencing a build warning.

perf top:

  Arnaldo Carvalho de Melo:

  - Add 'arch_cpu_idle' to the list of kernel idle symbols, noticed on a Orange
    Pi Zero ARM board, just like with other symbols in other arches.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108980Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

When a fan is controlled via linear fallback without cstate, we
shouldn't stop polling.  Otherwise it won't be adjusted again and
keeps running at an initial crazy pace.

Fixes: 800efb4c ("drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios")
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1103356
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107447Reported-by: Thomas Blume <thomas.blume@suse.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Tegra194 supports maximum 64K Bytes transfer per packet.
Tegra186 and prior supports maximum 4K Bytes transfer per packet.

This patch fixes this payload difference between Tegra194 and prior
Tegra chipsets using separate i2c_adapter_quirks.
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

If adapter->retries is set to a minus value from user space via ioctl,
it will make __i2c_transfer and __i2c_smbus_xfer skip the calling to
adapter->algo->master_xfer and adapter->algo->smbus_xfer that is
registered by the underlying bus drivers, and return value 0 to all the
callers. The bus driver will never be accessed anymore by all users,
besides, the users may still get successful return value without any
error or information log print out.

If adapter->timeout is set to minus value from user space via ioctl,
it will make the retrying loop in __i2c_transfer and __i2c_smbus_xfer
always break after the the first try, due to the time_after always
returns true.
Signed-off-by: Yi Zeng <yizeng@asrmicro.com>
[wsa: minor grammar updates to commit message]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org

Pull PCI fix from Bjorn Helgaas:
 "Fix Amlogic Meson host controller driver build failure (Corentin
  Labbe)"

* tag 'pci-v5.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: amlogic: Fix build failure due to missing gpio header

- Powerplay fixes
- Virtual display pinning fixes
- Golden register updates for vega
- Pitch and gem size validation fixes
- Fix for error case in sr-iov init
- Disable page tables in system memory on RV due to issues with IOMMU
  reported on some platforms
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190109204336.3315-1-alexander.deucher@amd.com

Merge tag 'riscv-for-linus-4.21-rc2-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V updates from Palmer Dabbelt:
 "This tag contains a handful of updates that slipped through the cracks
  during the merge window due to the holidays. The fixes are mostly
  independent, with the exception of one larger audit-related branch.

  Core RISC-V updates:

   - The BSS has been moved, which shrinks flat images.

   - A fix to test-bpf so it compiles on RV64I-based systems.

   - A fix to respect the kernel commandline when there is no device
     tree.

   - A fix to prevent CPUs from trying to put themselves to sleep when
     bringing down the system.

   - Support for MODULE_SECTIONS on RV32I-based systems.

   - [new in v2] The addition of an SBI earlycon driver. This is
     definately a new feature, but I'd like to include it now because I
     dropped this patch when submitting the merge window PR that removed
     our EARLY_PRINTK support.

  RISC-V audit updates:

   - The addition of NR_syscalls into unistd.h, which is necessary for
     CONFIG_FTRACE_SYSCALLS.

   - The definition of CREATE_TRACE_POINTS so __tracepoint_sys_{enter,exit}
     get defined.

   - A fix for trace_sys_exit() so we can enable HAVE_SYSCALL_TRACEPOINTS

  As usual, I've tested this by booting a Fedora-based image on a recent
  QEMU (this time just whatever I had lying around).

* tag 'riscv-for-linus-4.21-rc2-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  tty/serial: Add RISC-V SBI earlycon support
  riscv: add HAVE_SYSCALL_TRACEPOINTS to Kconfig
  riscv: fix trace_sys_exit hook
  riscv: define CREATE_TRACE_POINTS in ptrace.c
  riscv: define NR_syscalls in unistd.h
  riscv: audit: add audit hook in do_syscall_trace_enter/exit()
  riscv: add audit support
  RISC-V: Support MODULE_SECTIONS mechanism on RV32
  MAINTAINERS: SiFive drivers: add myself as a SiFive driver maintainer
  MAINTAINERS: SiFive drivers: change the git tree to a SiFive git tree
  riscv: don't stop itself in smp_send_stop
  arch: riscv: support kernel command line forcing when no DTB passed
  tools uapi: fix RISC-V 64-bit support
  RISC-V: Make BSS section as the last section in vmlinux.lds.S

Pull request for drm-misc-fixes for v5.0-rc2:
- Fixes for the tc358767 bridge to work correctly with
  tc358867 using a DP connector.
- Make resume work on amdgpu when a DP-MST display is unplugged.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1c47722d-c416-184d-4340-0dc6a614d685@linux.intel.com

A side effect of commit c55191e9 ("arm64: mm: apply r/o permissions
of VM areas to its linear alias as well") is that the linear map is
created with page granularity, which means that transitioning the early
page table from global to non-global mappings when enabling kpti can
take a significant amount of time during boot.

Given that most CPU implementations do not require kpti, this mainly
impacts KASLR builds where kpti is forcefully enabled. However, in these
situations we know early on that non-global mappings are required and
can avoid the use of global mappings from the beginning. The only gotcha
is Cavium erratum #27456, which we must detect based on the MIDR value
of the boot CPU.
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

Pull VFIO fixes from Alex Williamson:

 - Fix trace header include path for in-tree builds (Masahiro Yamada)

 - Fix overflow in unmap wrap-around test (Alex Williamson)

* tag 'vfio-v5.0-rc2' of git://github.com/awilliam/linux-vfio:
  vfio/type1: Fix unmap overflow off-by-one
  vfio/pci: set TRACE_INCLUDE_PATH to fix the build error

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes for USB-audio, HD-audio and cs46xx.

  The USB-audio fixes are for out-of-bound accesses and a regression in
  the recent cleanup, while HD-audio fixes are usual device-specific
  quirks"

* tag 'sound-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek - Disable headset Mic VREF for headset mode of ALC225
  ALSA: hda/realtek - Add unplug function into unplug state of Headset Mode for ALC225
  ALSA: usb-audio: fix CM6206 register definitions
  ALSA: cs46xx: Potential NULL dereference in probe
  ALSA: hda/realtek - Support Dell headset mode for New AIO platform
  ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks
  ALSA: usb-audio: Always check descriptor sizes in parser code
  ALSA: usb-audio: Check mixer unit descriptors more strictly
  ALSA: usb-audio: Avoid access before bLength check in build_audio_procunit()

Pull mtd fixes from Boris Brezillon:
 "Core MTD Fixes:

   - Fix a bug introduced when exposing MTD devs as NVMEM providers and
     check for add_mtd_device() return code everywhere

  raw NAND fixes:

   - Fix a memory corruption in the QCOM driver"

* tag 'mtd/fixes-for-5.0-rc2' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: qcom: fix memory corruption that causes panic
  mtd: Check add_mtd_device() ret code
  mtd: Fix the check on nvmem_register() ret code

We use syscall.tbl to generate system call table on powerpc.

The unistd.h copy is no longer required now. Remove it.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20190110094936.3132-2-ravi.bangoria@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Commit aff85039 ("powerpc: add system call table generation
support") changed how systemcall table is generated for powerpc.
Incorporate these changes into perf as well.

Committer testing:

  $ podman run --entrypoint=/bin/sh --privileged -v /home/acme/git:/git --rm -ti docker.io/acmel/linux-perf-tools-build-ubuntu:18.04-x-powerpc64
  perfbuilder@d7a7af166a80:/git/perf$ head -2 /etc/os-release
  NAME="Ubuntu"
  VERSION="18.04.1 LTS (Bionic Beaver)"
  perfbuilder@d7a7af166a80:/git/perf$
  perfbuilder@d7a7af166a80:/git/perf$ make ARCH=powerpc CROSS_COMPILE=powerpc64-linux-gnu- EXTRA_CFLAGS= -C /git/linux/tools/perf O=/tmp/build/perf
  make: Entering directory '/git/linux/tools/perf'
    BUILD:   Doing 'make -j8' parallel build
    HOSTCC   /tmp/build/perf/fixdep.o
    HOSTLD   /tmp/build/perf/fixdep-in.o
    LINK     /tmp/build/perf/fixdep
  Warning: Kernel ABI header at 'tools/include/uapi/linux/mman.h' differs from latest version at 'include/uapi/linux/mman.h'
  diff -u tools/include/uapi/linux/mman.h include/uapi/linux/mman.h
  sh: 1: command: Illegal option -c

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...            dwarf_getlocations: [ on  ]
  ...                         glibc: [ on  ]
  ...                          gtk2: [ OFF ]
  ...                      libaudit: [ OFF ]
  ...                        libbfd: [ OFF ]
  ...                        libelf: [ on  ]
  ...                       libnuma: [ OFF ]
  ...        numa_num_possible_cpus: [ OFF ]
  ...                       libperl: [ OFF ]
  ...                     libpython: [ OFF ]
  ...                      libslang: [ OFF ]
  ...                     libcrypto: [ OFF ]
  ...                     libunwind: [ OFF ]
  ...            libdw-dwarf-unwind: [ on  ]
  ...                          zlib: [ on  ]
  ...                          lzma: [ OFF ]
  ...                     get_cpuid: [ OFF ]
  ...                           bpf: [ on  ]

  Makefile.config:445: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev
  Makefile.config:491: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR
  Makefile.config:583: No libcrypto.h found, disables jitted code injection, please install libssl-devel or libssl-dev
  Makefile.config:598: slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev
  Makefile.config:612: GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev
  Makefile.config:639: Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev
  Makefile.config:666: No python interpreter was found: disables Python support - please install python-devel/python-dev
  Makefile.config:721: No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling
  Makefile.config:750: No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev
  Makefile.config:763: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev
  Makefile.config:814: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
  Makefile.config:840: No alternatives command found, you need to set JDIR= to point to the root of your Java directory
    GEN      /tmp/build/perf/common-cmds.h
  <SNIP>
    CC       /tmp/build/perf/util/syscalltbl.o
  <SNIP>
    LD       /tmp/build/perf/libperf-in.o
    AR       /tmp/build/perf/libperf.a
    LINK     /tmp/build/perf/perf
  make: Leaving directory '/git/linux/tools/perf'
  perfbuilder@d7a7af166a80:/git/perf$ head /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_64.c
  static const char *syscalltbl_powerpc_64[] = {
  	[0] = "restart_syscall",
  	[1] = "exit",
  	[2] = "fork",
  	[3] = "read",
  	[4] = "write",
  	[5] = "open",
  	[6] = "close",
  	[7] = "waitpid",
  	[8] = "creat",
  perfbuilder@d7a7af166a80:/git/perf$ tail /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_64.c
  	[381] = "pwritev2",
  	[382] = "kexec_file_load",
  	[383] = "statx",
  	[384] = "pkey_alloc",
  	[385] = "pkey_free",
  	[386] = "pkey_mprotect",
  	[387] = "rseq",
  	[388] = "io_pgetevents",
  };
  #define SYSCALLTBL_POWERPC_64_MAX_ID 388
  perfbuilder@d7a7af166a80:/git/perf$ head /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_32.c
  static const char *syscalltbl_powerpc_32[] = {
  	[0] = "restart_syscall",
  	[1] = "exit",
  	[2] = "fork",
  	[3] = "read",
  	[4] = "write",
  	[5] = "open",
  	[6] = "close",
  	[7] = "waitpid",
  	[8] = "creat",
  perfbuilder@d7a7af166a80:/git/perf$ tail /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_32.c
  	[381] = "pwritev2",
  	[382] = "kexec_file_load",
  	[383] = "statx",
  	[384] = "pkey_alloc",
  	[385] = "pkey_free",
  	[386] = "pkey_mprotect",
  	[387] = "rseq",
  	[388] = "io_pgetevents",
  };
  #define SYSCALLTBL_POWERPC_32_MAX_ID 388
  perfbuilder@d7a7af166a80:/git/perf$
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20190110094936.3132-1-ravi.bangoria@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>