Merge misc fixes from Andrew Morton:
 "6 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  sh: add copy_user_page() alias for __copy_user()
  lib/Kconfig: ZLIB_DEFLATE must select BITREVERSE
  mm, dax: fix DAX deadlocks
  memcg: convert threshold to bytes
  builddeb: remove debian/files before build
  mm, fs: obey gfp_mapping for add_to_page_cache()

copy_user_page() is needed by DAX.  Without this we get a compile error
for DAX on SH:

  fs/dax.c:280:2: error: implicit declaration of function `copy_user_page' [-Werror=implicit-function-declaration]
    copy_user_page(vto, (void __force *)vfrom, vaddr, to);
      ^

This was done with a random config that happened to include DAX support.

This patch has only been compile tested.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

lib/built-in.o: In function `__bitrev32':
deftree.c:(.text+0x1e799): undefined reference to `byte_rev_table'
deftree.c:(.text+0x1e7a0): undefined reference to `byte_rev_table'
deftree.c:(.text+0x1e7b4): undefined reference to `byte_rev_table'
deftree.c:(.text+0x1e7c1): undefined reference to `byte_rev_table'

Anything which uses bitrevX() has to select BITREVERSE, to grab
lib/bitrev.o.
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The following two locking commits in the DAX code:

commit 84317297 ("dax: fix race between simultaneous faults")
commit 46c043ed ("mm: take i_mmap_lock in unmap_mapping_range() for DAX")

introduced a number of deadlocks and other issues which need to be fixed
for the v4.3 kernel.  The list of issues in DAX after these commits
(some newly introduced by the commits, some preexisting) can be found
here:

  https://lkml.org/lkml/2015/9/25/602 (Subject: "Re: [PATCH] dax: fix deadlock in __dax_fault").

This undoes most of the changes introduced by those two commits,
essentially returning us to the DAX locking scheme that was used in
v4.2.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Dan Williams <dan.j.williams@intel.com>
Tested-by: Dave Chinner <dchinner@redhat.com>
Cc: Jan Kara <jack@suse.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

page_counter_memparse() returns pages for the threshold, while
mem_cgroup_usage() returns bytes for memory usage.  Convert the
threshold to bytes.

Fixes: 3e32cb2e ("memcg: rename cgroup_event to mem_cgroup_event").
Signed-off-by: Shaohua Li <shli@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Commit 3716001b ("deb-pkg: add source package") added the ability to
create a debian changelog file.  This exposed that previously the
builddeb script hasn't cleared debian/files between builds.

As debian/files keeps accumulating entries, the changes file will end up
growing indefinelty.  With outdated entries in debian/files, builddeb
script will exit with failure.  This regression impacts those who use
"make deb-pkg" target to build kernel into a .deb package and never use
"make mrproper" or other means to clean kernel tree from generated
directories.

To fix the regression, remove debian/files before starting build and in
the generated clean rule.

Fixes: 3716001b ("deb-pkg: add source package")
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Reported-by: Doug Smythies <dsmythies@telus.net>
Tested-by: Doug Smythies <dsmythies@telus.net>
Tested-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Michal Marek <mmarek@suse.cz>
Cc: maximilian attems <maks@stro.at>
Cc: Chris J Arges <chris.j.arges@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Commit 6afdb859 ("mm: do not ignore mapping_gfp_mask in page cache
allocation paths") has caught some users of hardcoded GFP_KERNEL used in
the page cache allocation paths.  This, however, wasn't complete and
there were others which went unnoticed.

Dave Chinner has reported the following deadlock for xfs on loop device:
: With the recent merge of the loop device changes, I'm now seeing
: XFS deadlock on my single CPU, 1GB RAM VM running xfs/073.
:
: The deadlocked is as follows:
:
: kloopd1: loop_queue_read_work
:       xfs_file_iter_read
:       lock XFS inode XFS_IOLOCK_SHARED (on image file)
:       page cache read (GFP_KERNEL)
:       radix tree alloc
:       memory reclaim
:       reclaim XFS inodes
:       log force to unpin inodes
:       <wait for log IO completion>
:
: xfs-cil/loop1: <does log force IO work>
:       xlog_cil_push
:       xlog_write
:       <loop issuing log writes>
:               xlog_state_get_iclog_space()
:               <blocks due to all log buffers under write io>
:               <waits for IO completion>
:
: kloopd1: loop_queue_write_work
:       xfs_file_write_iter
:       lock XFS inode XFS_IOLOCK_EXCL (on image file)
:       <wait for inode to be unlocked>
:
: i.e. the kloopd, with it's split read and write work queues, has
: introduced a dependency through memory reclaim. i.e. that writes
: need to be able to progress for reads make progress.
:
: The problem, fundamentally, is that mpage_readpages() does a
: GFP_KERNEL allocation, rather than paying attention to the inode's
: mapping gfp mask, which is set to GFP_NOFS.
:
: The didn't used to happen, because the loop device used to issue
: reads through the splice path and that does:
:
:       error = add_to_page_cache_lru(page, mapping, index,
:                       GFP_KERNEL & mapping_gfp_mask(mapping));

This has changed by commit aa4d8616 ("block: loop: switch to VFS
ITER_BVEC").

This patch changes mpage_readpage{s} to follow gfp mask set for the
mapping.  There are, however, other places which are doing basically the
same.

lustre:ll_dir_filler is doing GFP_KERNEL from the function which
apparently uses GFP_NOFS for other allocations so let's make this
consistent.

cifs:readpages_get_pages is called from cifs_readpages and
__cifs_readpages_from_fscache called from the same path obeys mapping
gfp.

ramfs_nommu_expand_for_mapping is hardcoding GFP_KERNEL as well
regardless it uses mapping_gfp_mask for the page allocation.

ext4_mpage_readpages is the called from the page cache allocation path
same as read_pages and read_cache_pages

As I've noticed in my previous post I cannot say I would be happy about
sprinkling mapping_gfp_mask all over the place and it sounds like we
should drop gfp_mask argument altogether and use it internally in
__add_to_page_cache_locked that would require all the filesystems to use
mapping gfp consistently which I am not sure is the case here.  From a
quick glance it seems that some file system use it all the time while
others are selective.
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Dave Chinner <david@fromorbit.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Ming Lei <ming.lei@canonical.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull arm64 fixes from Will Deacon:
 "Here are a few more arm64 fixes for 4.3.  Again, nothing too
  significant, but worth having nonetheless.  The MINSIGSTKSZ update is
  a bit grotty, but the value we currently have is wrong (too small), so
  anybody using that will have issues already.  It has Arnd's ack for
  the asm-generic change.

  Summary:

   - Fix module CFLAGS setting in workaround for erratum #843419
   - Update MINSIGSTKSZ and SIGSTKSZ to match glibc
   - Wire up some new compat syscalls"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: compat: wire up new syscalls
  arm64: Fix MINSIGSTKSZ and SIGSTKSZ
  arm64: errata: use KBUILD_CFLAGS_MODULE for erratum #843419

Pull pinctrl fixes from Linus Walleij:
 "Here are some overdue (what can I say, I was on a short vacation)
  driver fixes for the pin control subsystem:

   - Allwinner sun5i A10s had a faulty mapping

   - Freescale i.MX25 had some bad arithmetics

   - Uniphier PH1-sLD8 missed some input enable settings"

* tag 'pinctrl-v4.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: uniphier: fix input enable settings for PH1-sLD8
  pinctrl: imx25: ensure that a pin with id i is at position i in the info array
  pinctrl: sun5i: Fix a10s pwm1 pinctrl mapping

Pull rdma updates from Doug Ledford:
 "We have four batched up patches for the current rc kernel.

  Two of them are small fixes that are obvious.

  One of them is larger than I would like for a late stage rc pull, but
  we found an issue in the namespace lookup code related to RoCE and
  this works around the issue for now (we allow a lookup with a
  namespace to succeed on RoCE since RoCE namespaces aren't implemented
  yet).  This will go away in 4.4 when we put in support for namespaces
  in RoCE devices.

  The last one is large in terms of lines, but is all legal and no
  functional changes.  Cisco needed to update their files to be more
  specific about their license.  They had intended the files to be dual
  licensed as GPL/BSD all along, and specified that in their module
  license tag, but their file headers were not up to par.  They
  contacted all of the contributors to get agreement and then submitted
  a patch to update the license headers in the files.

  Summary:

   - Work around connection namespace lookup bug related to RoCE

   - Change usnic license to Dual GPL/BSD (was intended to be that way
     all along, but wasn't clear, permission from contributors was
     chased down)

   - Fix an issue between NFSoRDMA and mlx5 that could cause an oops

   - Fix leak of sendonly multicast groups"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/ipoib: For sendonly join free the multicast group on leave
  IB/cma: Accept connection without a valid netdev on RoCE
  xprtrdma: Don't require LOCAL_DMA_LKEY support for fastreg
  usnic: add missing clauses to BSD license

Pull ext4 Kconfig description fixup from Jan Kara:
 "A small fixup in description of EXT4_USE_FOR_EXT2 config option"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext4: Update EXT4_USE_FOR_EXT2 description

The vmstat code uses "schedule_delayed_work_on()" to do the initial
startup of the delayed work on the right CPU, but then once it was
started it would use the non-cpu-specific "schedule_delayed_work()" to
re-schedule it on that CPU.

That just happened to schedule it on the same CPU historically (well, in
almost all situations), but the code _requires_ this work to be per-cpu,
and should say so explicitly rather than depend on the non-cpu-specific
scheduling to schedule on the current CPU.

The timer code is being changed to not be as single-minded in always
running things on the calling CPU.

See also commit 874bbfe6 ("workqueue: make sure delayed work run in
local cpu") that for now maintains the local CPU guarantees just in case
there are other broken users that depended on the accidental behavior.

Cc: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull workqueue fixlet from Tejun Heo:
 "Single patch to make delayed work always be queued on the local CPU"

This is not actually something we should guarantee, but it's something
we by accident have historically done, and at least one call site has
grown to depend on it.

I'm going to fix that known broken callsite, but in the meantime this
makes the accidental behavior be explicit, just in case there are other
cases that might depend on it.

* 'for-4.3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: make sure delayed work run in local cpu

Pull KVM fixes from Paolo Bonzini:
 "Bug fixes for system management mode emulation.

  The first two patches fix SMM emulation on Nehalem processors.  The
  others fix some cases that became apparent as work progressed on the
  firmware side"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: fix RSM into 64-bit protected mode
  KVM: x86: fix previous commit for 32-bit
  KVM: x86: fix SMI to halted VCPU
  KVM: x86: clean up kvm_arch_vcpu_runnable
  KVM: x86: map/unmap private slots in __x86_set_memory_region
  KVM: x86: build kvm_userspace_memory_region in x86_set_memory_region

Pull MFD fixes from Lee Jones:
 "Bug Fixes:

   - Return correct error code i.e. not zero

   - Fix build error when !CONFIG_PM_SLEEP"

* tag 'mfd-fixes-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mfd: max77843: Fix max77843_chg_init() return on error
  mfd: intel-lpss: Fix build error when !CONFIG_PM_SLEEP

In order to get into 64-bit protected mode, you need to enable
paging while EFER.LMA=1.  For this to work, CS.L must be 0.
Currently, we load the segments before CR0 and CR4, which means
that if RSM returns into 64-bit protected mode CS.L is already 1
and everything breaks.

Luckily, CS.L=0 is always the case when executing RSM, because it
is forbidden to execute RSM from 64-bit protected mode.  Hence it
is enough to load CR0 and CR4 first, and only then the segments.

Fixes: 660a5d51
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Unfortunately I only noticed this after pushing.

Fixes: f0d648bd
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Commit 208473c1 ("ARM: wire up new syscalls") hooked up the new
userfaultfd and membarrier syscalls for ARM, so do the same for our
compat syscall table in arm64.
Signed-off-by: Will Deacon <will.deacon@arm.com>

When we leave the multicast group on expiration of a neighbor we
do not free the mcast structure. This results in a memory leak
that causes ib_dealloc_pd to fail and print a WARN_ON message
and backtrace.

Fixes: bd99b2e0 (IB/ipoib: Expire sendonly multicast joins)
Signed-off-by: Christoph Lameter <cl@linux.com>
Tested-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

Pull nfsd fixes from Bruce Fields:
 "Two nfsd fixes, one for an RDMA crash, one for a pnfs/block protocol
  bug"

* tag 'nfsd-4.3-2' of git://linux-nfs.org/~bfields/linux:
  svcrdma: Fix NFS server crash triggered by 1MB NFS WRITE
  nfsd/blocklayout: accept any minlength

Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Fix AVX detection to prevent use of non-existent AESNI.

   - Some SPARC ciphers did not set their IV size which may lead to
     memory corruption"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: ahash - ensure statesize is non-zero
  crypto: camellia_aesni_avx - Fix CPU feature checks
  crypto: sparc - initialize blkcipher.ivsize

Pull IOMMU fixes from Joerg Roedel:
 "A few fixes piled up:

   - Fix for a suspend/resume issue where PCI probing code overwrote
     dev->irq for the MSI irq of the AMD IOMMU.

   - Fix for a kernel crash when a 32 bit PCI device was assigned to a
     KVM guest.

   - Fix for a possible memory leak in the VT-d driver

   - A couple of fixes for the ARM-SMMU driver"

* tag 'iommu-fixes-v4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix NULL pointer deref on device detach
  iommu/amd: Prevent binding other PCI drivers to IOMMU PCI devices
  iommu/vt-d: Fix memory leak in dmar_insert_one_dev_info()
  iommu/arm-smmu: Use correct address mask for CMD_TLBI_S2_IPA
  iommu/arm-smmu: Ensure IAS is set correctly for AArch32-capable SMMUs
  iommu/io-pgtable-arm: Don't use dma_to_phys()

Pull drm fixes from Dave Airlie:
 "I got a bit behind last week, so here is a delayed fixes pull:

   - a bunch of radeon/amd gpu fixes
   - some nouveau regression fixes (ppc bios reading and runtime pm fix)
   - one drm core oops fix
   - two qxl locking fixes
   - one qxl regression fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/nouveau/bios: fix OF loading
  drm/nouveau/fbcon: take runpm reference when userspace has an open fd
  drm/nouveau/nouveau: Disable AGP for SiS 761
  drm/nouveau/display: allow up to 16k width/height for fermi+
  drm/nouveau/bios: translate devinit pri/sec i2c bus to internal identifiers
  drm: Fix locking for sysfs dpms file
  drm/amdgpu: fix memory leak in amdgpu_vm_update_page_directory
  drm/amdgpu: fix 32-bit compiler warning
  drm/qxl: avoid dependency lock
  drm/qxl: avoid buffer reservation in qxl_crtc_page_flip
  drm/qxl: fix framebuffer dirty rectangle tracking.
  drm/amdgpu: flag iceland as experimental
  drm/amdgpu: check before checking pci bridge registers
  drm/amdgpu: fix num_crtc on CZ
  drm/amdgpu: restore the fbdev mode in lastclose
  drm/radeon: restore the fbdev mode in lastclose
  drm/radeon: add quirk for ASUS R7 370
  drm/amdgpu: add pm sysfs files late
  drm/radeon: add pm sysfs files late

An SMI to a halted VCPU must wake it up, hence a VCPU with a pending
SMI must be considered runnable.

Fixes: 64d60670
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Split the huge conditional in two functions.

Fixes: 64d60670
Cc: stable@vger.kernel.org
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Otherwise, two copies (one of them never populated and thus bogus)
are allocated for the regular and SMM address spaces.  This breaks
SMM with EPT but without unrestricted guest support, because the
SMM copy of the identity page map is all zeros.

By moving the allocation to the caller we also remove the last
vestiges of kernel-allocated memory regions (not accessible anymore
in userspace since commit b74a07be, "KVM: Remove kernel-allocated
memory regions", 2010-06-21); that is a nice bonus.
Reported-by: Alexandre DERUMIER <aderumier@odiso.com>
Cc: stable@vger.kernel.org
Fixes: 9da0e4d5Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

The next patch will make x86_set_memory_region fill the
userspace_addr.  Since the struct is not used untouched
anymore, it makes sense to build it in x86_set_memory_region
directly; it also simplifies the callers.
Reported-by: Alexandre DERUMIER <aderumier@odiso.com>
Cc: stable@vger.kernel.org
Fixes: 9da0e4d5Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Unlike shash algorithms, ahash drivers must implement export
and import as their descriptors may contain hardware state and
cannot be exported as is.  Unfortunately some ahash drivers did
not provide them and end up causing crashes with algif_hash.

This patch adds a check to prevent these drivers from registering
ahash algorithms until they are fixed.

Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

MINSIGSTKSZ and SIGSTKSZ for ARM64 are not correctly set in latest kernel.
This patch fixes this issue.

This issue is reported in LTP (testcase: sigaltstack02.c).
Testcase failed when sigaltstack() called with stack size "MINSIGSTKSZ - 1"
Since in Glibc-2.22, MINSIGSTKSZ is set to 5120 but in kernel
it is set to 2048 so testcase gets failed.

Testcase Output:
sigaltstack02 1  TPASS  :  stgaltstack() fails, Invalid Flag value,errno:22
sigaltstack02 2  TFAIL  :  sigaltstack() returned 0, expected -1,errno:12

Reported Issue in Glibc Bugzilla:
Bugfix in Glibc-2.22: [Bug 16850]
https://sourceware.org/bugzilla/show_bug.cgi?id=16850Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Manjeet Pawar <manjeet.p@samsung.com>
Signed-off-by: Rohit Thapliyal <r.thapliyal@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

Commit df057cc7 ("arm64: errata: add module build workaround for
erratum #843419") sets CFLAGS_MODULE to ensure that the large memory
model is used by the compiler when building kernel modules.

However, CFLAGS_MODULE is an environment variable and intended to be
overridden on the command line, which appears to be the case with the
Ubuntu kernel packaging system, so use KBUILD_CFLAGS_MODULE instead.

Cc: <stable@vger.kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: df057cc7 ("arm64: errata: add module build workaround for erratum #843419")
Reported-by: Dann Frazier <dann.frazier@canonical.com>
Tested-by: Dann Frazier <dann.frazier@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

Now that the NFS server advertises a maximum payload size of 1MB
for RPC/RDMA again, it crashes in svc_process_common() when NFS
client sends a 1MB NFS WRITE on an NFS/RDMA mount.

The server has set up a 259 element array of struct page pointers
in rq_pages[] for each incoming request. The last element of the
array is NULL.

When an incoming request has been completely received,
rdma_read_complete() attempts to set the starting page of the
incoming page vector:

  rqstp->rq_arg.pages = &rqstp->rq_pages[head->hdr_count];

and the page to use for the reply:

  rqstp->rq_respages = &rqstp->rq_arg.pages[page_no];

But the value of page_no has already accounted for head->hdr_count.
Thus rq_respages now points past the end of the incoming pages.

For NFS WRITE operations smaller than the maximum, this is harmless.
But when the NFS WRITE operation is as large as the server's max
payload size, rq_respages now points at the last entry in rq_pages,
which is NULL.

Fixes: cc9a903d ('svcrdma: Change maximum server payload . . .')
BugLink: https://bugzilla.linux-nfs.org/show_bug.cgi?id=270Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Shirley Ma <shirley.ma@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Nothing too crazy here, a couple of regression fixes + runpm/fbcon
race fix.

* 'linux-4.3' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau/bios: fix OF loading
  drm/nouveau/fbcon: take runpm reference when userspace has an open fd
  drm/nouveau/nouveau: Disable AGP for SiS 761
  drm/nouveau/display: allow up to 16k width/height for fermi+
  drm/nouveau/bios: translate devinit pri/sec i2c bus to internal identifiers

Currently OF bios load fails for a few reasons:
 - checksum failure
 - bios size too small
 - no PCIR header
 - bios length not a multiple of 4

In this change, we resolve all of the above by ignoring any checksum
failures (since OF VBIOS tends not to have a checksum), and faking the
PCIR data when loading from OF.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

We need to do this in order to prevent accesses to the device while it's
powered down.  Userspace may have an mmap of the fb, and there's no good
way (that I know of) to prevent it from touching the device otherwise.

This fixes some nasty races between runpm and plymouth on some systems,
which result in the GPU getting very upset and hanging the boot.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org

SiS 761 chipset does not support AGP cards but has AGP capability (for
the onboard video). At least PC Chips A31G board using this chipset has
an AGP-like AGPro slot that's wired to the PCI bus. Enabling AGP will
fail (GPU lockup and software fbcon, X11 hangs).

Add support for matching just the host bridge in nvkm_device_agp_quirks
and add entry for SiS 761 with mode 0 (AGP disabled).
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

fdo#92013.

Regression from "i2c: transition pad/ports away from being based on nvkm_object"
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Pull scheduler fix from Thomas Gleixner:
 "Fix a long standing state race in finish_task_switch()"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Fix TASK_DEAD race in finish_task_switch()

Pull perf fix from Thomas Glexiner:
 "Fix build breakage on powerpc in perf tools"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Fix build break on powerpc due to sample_reg_masks