Commit Graph

692546 Commits

Author SHA1 Message Date
Christoph Hellwig
eaa093d2c0 ext4: remove timebomb in ext4_decode_extra_time()
Changing behavior based on the version code is a timebomb waiting to
happen, and not easily bisectable.  Drop it and leave any removal
to explicit developer action. (And I don't think file system
should _ever_ remove backwards compatibility that has no explicit
flag, but I'll leave that to the ext4 folks).

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Eric Biggers <ebiggers@google.com>
2017-08-24 13:59:24 -04:00
Markus Elfring
d695a1bea3 ext4: use sizeof(*ptr)
Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
2017-08-24 13:50:24 -04:00
Darrick J. Wong
1bd8d6cd3e ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
In the ext4 implementations of SEEK_HOLE and SEEK_DATA, make sure we
return -ENXIO for negative offsets instead of banging around inside
the extent code and returning -EFSCORRUPTED.

Reported-by: Mateusz S <muttdini@gmail.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org # 4.6
2017-08-24 13:22:06 -04:00
Wang Shilong
901ed070df ext4: reduce lock contention in __ext4_new_inode
While running number of creating file threads concurrently,
we found heavy lock contention on group spinlock:

FUNC                           TOTAL_TIME(us)       COUNT        AVG(us)
ext4_create                    1707443399           1440000      1185.72
_raw_spin_lock                 1317641501           180899929    7.28
jbd2__journal_start            287821030            1453950      197.96
jbd2_journal_get_write_access  33441470             73077185     0.46
ext4_add_nondir                29435963             1440000      20.44
ext4_add_entry                 26015166             1440049      18.07
ext4_dx_add_entry              25729337             1432814      17.96
ext4_mark_inode_dirty          12302433             5774407      2.13

most of cpu time blames to _raw_spin_lock, here is some testing
numbers with/without patch.

Test environment:
Server : SuperMicro Sever (2 x E5-2690 v3@2.60GHz, 128GB 2133MHz
         DDR4 Memory, 8GbFC)
Storage : 2 x RAID1 (DDN SFA7700X, 4 x Toshiba PX02SMU020 200GB
          Read Intensive SSD)

format command:
        mkfs.ext4 -J size=4096

test command:
        mpirun -np 48 mdtest -n 30000 -d /ext4/mdtest.out -F -C \
                -r -i 1 -v -p 10 -u #first run to load inode

        mpirun -np 48 mdtest -n 30000 -d /ext4/mdtest.out -F -C \
                -r -i 3 -v -p 10 -u

Kernel version: 4.13.0-rc3

Test  1,440,000 files with 48 directories by 48 processes:

Without patch:

File Creation   File removal
79,033          289,569 ops/per second
81,463          285,359
79,875          288,475

With patch:
File Creation   File removal
810669		301694
812805		302711
813965		297670

Creation performance is improved more than 10X with large
journal size. The main problem here is we test bitmap
and do some check and journal operations which could be
slept, then we test and set with lock hold, this could
be racy, and make 'inode' steal by other process.

However, after first try, we could confirm handle has
been started and inode bitmap journaled too, then
we could find and set bit with lock hold directly, this
will mostly gurateee success with second try.

Tested-by: Shuichi Ihara <sihara@ddn.com>
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
2017-08-24 12:56:35 -04:00
Wang Shilong
2fe435d8b0 ext4: cleanup goto next group
avoid duplicated codes, also we need goto
next group in case we found reserved inode.

Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
2017-08-24 11:58:18 -04:00
Jan Kara
4f9d956d19 ext4: do not unnecessarily allocate buffer in recently_deleted()
In recently_deleted() function we want to check whether inode is still
cached in buffer cache. Use sb_find_get_block() for that instead of
sb_getblk() to avoid unnecessary allocation of bdev page and buffer
heads.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-24 11:52:21 -04:00
Tahsin Erdogan
32aaf19420 ext4: add missing xattr hash update
When updating an extended attribute, if the padded value sizes are the
same, a shortcut is taken to avoid the bulk of the work. This was fine
until the xattr hash update was moved inside ext4_xattr_set_entry().
With that change, the hash update got missed in the shortcut case.

Thanks to ZhangYi (yizhang089@gmail.com) for root causing the problem.

Fixes: daf8328172 ("ext4: eliminate xattr entry e_hash recalculation for removes")

Reported-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-14 08:30:06 -04:00
Theodore Ts'o
b80b32b6d5 ext4: fix clang build regression
Arnd Bergmann <arnd@arndb.de>

As Stefan pointed out, I misremembered what clang can do specifically,
and it turns out that the variable-length array at the end of the
structure did not work (a flexible array would have worked here
but not solved the problem):

fs/ext4/mballoc.c:2303:17: error: fields must have a constant size:
'variable length array in structure' extension will never be supported
                ext4_grpblk_t counters[blocksize_bits + 2];

This reverts part of my previous patch, using a fixed-size array
again, but keeping the check for the array overflow.

Fixes: 2df2c3402f ("ext4: fix warning about stack corruption")
Reported-by: Stefan Agner <stefan@agner.ch>
Tested-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-14 08:29:18 -04:00
Linus Torvalds
aae4e7a8bc Linux 4.13-rc4 2017-08-06 18:44:49 -07:00
Linus Torvalds
acdae9ee6a platform-drivers-x86 for v4.13-4
Fix loop preventing some platforms from waking up via the power
 button in s2idle.
 
 intel-vbtn:
  - match power button on press rather than release
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Merge tag 'platform-drivers-x86-v4.13-4' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver fix from Darren Hart:
 "Fix loop preventing some platforms from waking up via the power button
  in s2idle:

   - intel-vbtn: match power button on press rather than release"

* tag 'platform-drivers-x86-v4.13-4' of git://git.infradead.org/linux-platform-drivers-x86:
  platform/x86: intel-vbtn: match power button on press rather than release
2017-08-06 16:11:34 -07:00
Linus Torvalds
ed66da1104 A large number of ext4 bug fixes and cleanups for v4.13
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "A large number of ext4 bug fixes and cleanups for v4.13"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix copy paste error in ext4_swap_extents()
  ext4: fix overflow caused by missing cast in ext4_resize_fs()
  ext4, project: expand inode extra size if possible
  ext4: cleanup ext4_expand_extra_isize_ea()
  ext4: restructure ext4_expand_extra_isize
  ext4: fix forgetten xattr lock protection in ext4_expand_extra_isize
  ext4: make xattr inode reads faster
  ext4: inplace xattr block update fails to deduplicate blocks
  ext4: remove unused mode parameter
  ext4: fix warning about stack corruption
  ext4: fix dir_nlink behaviour
  ext4: silence array overflow warning
  ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
  ext4: release discard bio after sending discard commands
  ext4: convert swap_inode_data() over to use swap() on most of the fields
  ext4: error should be cleared if ea_inode isn't added to the cache
  ext4: Don't clear SGID when inheriting ACLs
  ext4: preserve i_mode if __ext4_set_acl() fails
  ext4: remove unused metadata accounting variables
  ext4: correct comment references to ext4_ext_direct_IO()
2017-08-06 12:31:17 -07:00
Linus Torvalds
6ea1bc9b1a Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "This fixes two build issues for ralink platforms, both due to missing
  #includes which used to be included indirectly via other headers"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: mt7620: Add missing header
  MIPS: ralink: Fix build error due to missing header
2017-08-06 11:52:01 -07:00
Dmitry V. Levin
fbb77611e9 Fix compat_sys_sigpending breakage
The latest change of compat_sys_sigpending in commit 8f13621abc
("sigpending(): move compat to native") has broken it in two ways.

First, it tries to write 4 bytes more than userspace expects:
sizeof(old_sigset_t) == sizeof(long) == 8 instead of
sizeof(compat_old_sigset_t) == sizeof(u32) == 4.

Second, on big endian architectures these bytes are being written in the
wrong order.

This bug was found by strace test suite.

Reported-by: Anatoly Pugachev <matorola@gmail.com>
Inspired-by: Eugene Syromyatnikov <evgsyr@gmail.com>
Fixes: 8f13621abc ("sigpending(): move compat to native")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-06 11:48:27 -07:00
Maninder Singh
4e56201321 ext4: fix copy paste error in ext4_swap_extents()
This bug was found by a static code checker tool for copy paste
problems.

Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-06 01:33:07 -04:00
Jerry Lee
aec51758ce ext4: fix overflow caused by missing cast in ext4_resize_fs()
On a 32-bit platform, the value of n_blcoks_count may be wrong during
the file system is resized to size larger than 2^32 blocks.  This may
caused the superblock being corrupted with zero blocks count.

Fixes: 1c6bd7173d
Signed-off-by: Jerry Lee <jerrylee@qnap.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org # 3.7+
2017-08-06 01:18:31 -04:00
Miao Xie
c03b45b853 ext4, project: expand inode extra size if possible
When upgrading from old format, try to set project id
to old file first time, it will return EOVERFLOW, but if
that file is dirtied(touch etc), changing project id will
be allowed, this might be confusing for users, we could
try to expand @i_extra_isize here too.

Reported-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-06 01:00:49 -04:00
Miao Xie
b640b2c51b ext4: cleanup ext4_expand_extra_isize_ea()
Clean up some goto statement, make ext4_expand_extra_isize_ea() clearer.

Signed-off-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
2017-08-06 00:55:48 -04:00
Miao Xie
cf0a5e818f ext4: restructure ext4_expand_extra_isize
Current ext4_expand_extra_isize just tries to expand extra isize, if
someone is holding xattr lock or some check fails, it will give up.
So rename its name to ext4_try_to_expand_extra_isize.

Besides that, we clean up unnecessary check and move some relative checks
into it.

Signed-off-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
2017-08-06 00:40:01 -04:00
Miao Xie
3b10fdc6d8 ext4: fix forgetten xattr lock protection in ext4_expand_extra_isize
We should avoid the contention between the i_extra_isize update and
the inline data insertion, so move the xattr trylock in front of
i_extra_isize update.

Signed-off-by: Miao Xie <miaoxie@huawei.com>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
2017-08-06 00:27:38 -04:00
Tahsin Erdogan
9699d4f91d ext4: make xattr inode reads faster
ext4_xattr_inode_read() currently reads each block sequentially while
waiting for io operation to complete before moving on to the next
block. This prevents request merging in block layer.

Add a ext4_bread_batch() function that starts reads for all blocks
then optionally waits for them to complete. A similar logic is used
in ext4_find_entry(), so update that code to use the new function.

Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-06 00:07:01 -04:00
Tahsin Erdogan
ec00022030 ext4: inplace xattr block update fails to deduplicate blocks
When an xattr block has a single reference, block is updated inplace
and it is reinserted to the cache. Later, a cache lookup is performed
to see whether an existing block has the same contents. This cache
lookup will most of the time return the just inserted entry so
deduplication is not achieved.

Running the following test script will produce two xattr blocks which
can be observed in "File ACL: " line of debugfs output:

  mke2fs -b 1024 -I 128 -F -O extent /dev/sdb 1G
  mount /dev/sdb /mnt/sdb

  touch /mnt/sdb/{x,y}

  setfattr -n user.1 -v aaa /mnt/sdb/x
  setfattr -n user.2 -v bbb /mnt/sdb/x

  setfattr -n user.1 -v aaa /mnt/sdb/y
  setfattr -n user.2 -v bbb /mnt/sdb/y

  debugfs -R 'stat x' /dev/sdb | cat
  debugfs -R 'stat y' /dev/sdb | cat

This patch defers the reinsertion to the cache so that we can locate
other blocks with the same contents.

Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
2017-08-05 22:41:42 -04:00
Tahsin Erdogan
77a2e84d51 ext4: remove unused mode parameter
ext4_alloc_file_blocks() does not use its mode parameter. Remove it.

Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-05 22:15:45 -04:00
Arnd Bergmann
2df2c3402f ext4: fix warning about stack corruption
After commit 62d1034f53e3 ("fortify: use WARN instead of BUG for now"),
we get a warning about possible stack overflow from a memcpy that
was not strictly bounded to the size of the local variable:

    inlined from 'ext4_mb_seq_groups_show' at fs/ext4/mballoc.c:2322:2:
include/linux/string.h:309:9: error: '__builtin_memcpy': writing between 161 and 1116 bytes into a region of size 160 overflows the destination [-Werror=stringop-overflow=]

We actually had a bug here that would have been found by the warning,
but it was already fixed last year in commit 30a9d7afe7 ("ext4: fix
stack memory corruption with 64k block size").

This replaces the fixed-length structure on the stack with a variable-length
structure, using the correct upper bound that tells the compiler that
everything is really fine here. I also change the loop count to check
for the same upper bound for consistency, but the existing code is
already correct here.

Note that while clang won't allow certain kinds of variable-length arrays
in structures, this particular instance is fine, as the array is at the
end of the structure, and the size is strictly bounded.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-05 21:57:46 -04:00
Andreas Dilger
c741489206 ext4: fix dir_nlink behaviour
The dir_nlink feature has been enabled by default for new ext4
filesystems since e2fsprogs-1.41 in 2008, and was automatically
enabled by the kernel for older ext4 filesystems since the
dir_nlink feature was added with ext4 in kernel 2.6.28+ when
the subdirectory count exceeded EXT4_LINK_MAX-1.

Automatically adding the file system features such as dir_nlink is
generally frowned upon, since it could cause the file system to not be
mountable on older kernel, thus preventing the administrator from
rolling back to an older kernel if necessary.

In this case, the administrator might also want to disable the feature
because glibc's fts_read() function does not correctly optimize
directory traversal for directories that use st_nlinks field of 1 to
indicate that the number of links in the directory are not tracked by
the file system, and could fail to traverse the full directory
hierarchy.  Fortunately, in the past ten years very few users have
complained about incomplete file system traversal by glibc's
fts_read().

This commit also changes ext4_inc_count() to allow i_nlinks to reach
the full EXT4_LINK_MAX links on the parent directory (including "."
and "..") before changing i_links_count to be 1.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196405
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-05 19:47:34 -04:00
Dan Carpenter
381cebfe72 ext4: silence array overflow warning
I get a static checker warning:

    fs/ext4/ext4.h:3091 ext4_set_de_type()
    error: buffer overflow 'ext4_type_by_mode' 15 <= 15

It seems unlikely that we would hit this read overflow in real life, but
it's also simple enough to make the array 16 bytes instead of 15.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2017-08-05 19:00:31 -04:00
Jan Kara
fcf5ea1099 ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
ext4_find_unwritten_pgoff() does not properly handle a situation when
starting index is in the middle of a page and blocksize < pagesize. The
following command shows the bug on filesystem with 1k blocksize:

  xfs_io -f -c "falloc 0 4k" \
            -c "pwrite 1k 1k" \
            -c "pwrite 3k 1k" \
            -c "seek -a -r 0" foo

In this example, neither lseek(fd, 1024, SEEK_HOLE) nor lseek(fd, 2048,
SEEK_DATA) will return the correct result.

Fix the problem by neglecting buffers in a page before starting offset.

Reported-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
CC: stable@vger.kernel.org # 3.8+
2017-08-05 17:43:24 -04:00
Mario Limonciello
946da69954 platform/x86: intel-vbtn: match power button on press rather than release
This fixes a problem where the system gets stuck in a loop
unable to wakeup via power button in s2idle.

The problem happens because:
 - press power button:
   - system emits 0xc0 (power press), event ignored
   - system emits 0xc1 (power release), event processed,
     emited as KEY_POWER
   - set wakeup_mode to true
   - system goes to s2idle
 - press power button
   - system emits 0xc0 (power press), wakeup_mode is true,
     system wakes
   - system emits 0xc1 (power release), event processed,
     emited as KEY_POWER
   - system goes to s2idle again

To avoid this situation, process the presses (which matches what
intel-hid does too).

Verified on an Dell XPS 9365

Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2017-08-05 14:37:19 -07:00
Linus Torvalds
0fdd951c9b media fixes for v4.13-rc2
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Merge tag 'media/v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 "This series is larger than I would like to submit for -rc4. My
  original intent were to sent it to either -rc2 or -rc3. Unfortunately,
  due to my vacations, I got a lot of pending stuff after my return, and
  had to do some biz trips, with prevented me to send this earlier.

  Several fixes:

   - some fixes at atomisp staging driver

   - several gcc 7 warning fixes

   - cleanup media SVG files, in order to fix PDF build on some distros

   - fix random Kconfig build of venus driver

   - some fixes for the venus driver

   - some changes from semaphone to mutex in ngene's driver

   - some locking fixes at dib0700 driver

   - several fixes on ngene's driver and frontends to make it properly
     support some new boards added on Kernel 4.13

   - some fixes to CEC drivers

   - omap_vout: vrfb: convert to dmaengine

   - docs-rst: document EBUSY for VIDIOC_S_FMT

  Please notice that the big diffstat changes here are at the SVG files.

  Visually, the images look the same, but the file size is now a lot
  smaller than before, and they don't use some XML tags that would cause
  them to be badly parsed by some ImageMagick versions, or to require a
  lot of memory by TeTex, with would break PDF output on some
  distributions"

* tag 'media/v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (68 commits)
  media: atomisp2: array underflow in imx_enum_frame_size()
  media: atomisp2: array underflow in ap1302_enum_frame_size()
  media: atomisp2: Array underflow in atomisp_enum_input()
  media: platform: davinci: drop VPFE_CMD_S_CCDC_RAW_PARAMS
  media: platform: davinci: return -EINVAL for VPFE_CMD_S_CCDC_RAW_PARAMS ioctl
  media: venus: don't abuse dma_alloc for non-DMA allocations
  media: venus: hfi: fix error handling in hfi_sys_init_done()
  media: venus: fix compile-test build on non-qcom ARM platform
  media: venus: mark PM functions as __maybe_unused
  media: cec-notifier: small improvements
  media: pulse8-cec: persistent_config should be off by default
  media: cec: cec_transmit_attempt_done: ignore CEC_TX_STATUS_MAX_RETRIES
  media: staging: atomisp: array underflow in ioctl
  media: lirc: LIRC_GET_REC_RESOLUTION should return microseconds
  media: svg: avoid too long lines
  media: svg files: simplify files
  media: selection.svg: simplify the SVG file
  media: vimc: set id_table for platform drivers
  media: staging: atomisp: disable warnings with cc-disable-warning
  media: davinci: variable 'common' set but not used
  ...
2017-08-05 14:09:26 -07:00
Daeho Jeong
e45105772d ext4: release discard bio after sending discard commands
We've changed the discard command handling into parallel manner.
But, in this change, I forgot decreasing the usage count of the bio
which was used to send discard request. I'm sorry about that.

Fixes: a015434480 ("ext4: send parallel discards on commit completions")
Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
2017-08-05 13:11:57 -04:00
Linus Torvalds
aab7761c4f GPIO fixes in the first take after v4.13-rc1:
- LP87565: set the proper output level for direction_output.
 
 - stm32: fix the kernel build by selecting the hierarchical
   irqdomain symbol properly - this happens to be done in the
   pin control framework but whatever, it had dependencies to
   GPIO so we need to apply it here.
 
 - Select the hierarchical IRQ domain also for Xgene.
 
 - Fix wakeups to work on MXC.
 
 - Fix up the device tree binding on Exar that went astray,
   also add the right bindings.
 
 - Fix the unwanted events for edges from the library.
 
 - Fix the unbalanced chanined IRQ on the Tegra.
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Merge tag 'gpio-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:

 - LP87565: set the proper output level for direction_output.

 - stm32: fix the kernel build by selecting the hierarchical irqdomain
   symbol properly - this happens to be done in the pin control
   framework but whatever, it had dependencies to GPIO so we need to
   apply it here.

 - Select the hierarchical IRQ domain also for Xgene.

 - Fix wakeups to work on MXC.

 - Fix up the device tree binding on Exar that went astray, also add the
   right bindings.

 - Fix the unwanted events for edges from the library.

 - Fix the unbalanced chanined IRQ on the Tegra.

* tag 'gpio-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: tegra: fix unbalanced chained_irq_enter/exit
  gpiolib: skip unwanted events, don't convert them to opposite edge
  gpio: exar: Use correct property prefix and document bindings
  gpio: gpio-mxc: Fix: higher 16 GPIOs usable as wake source
  gpio: xgene-sb: select IRQ_DOMAIN_HIERARCHY
  pinctrl: stm32: select IRQ_DOMAIN_HIERARCHY instead of depends on
  gpio: lp87565: Set proper output level and direction for direction_output
  MAINTAINERS: Add entry for Whiskey Cove PMIC GPIO driver
2017-08-05 06:55:13 -07:00
Linus Torvalds
ef9ca02baa A handful of critical fixes for changes introduce this merge window. The TI
sci_clk_get() API was pretty broken and nobody noticed. There were some
 CPUfreq crashes on C.H.I.P devices because we failed to propagate rates
 up the clk tree. Also, the Intel Atom PMC clk driver needs to mark a clk
 critical if the firmware has it enabled already so that audio doesn't get
 killed on Baytrail. Gemini devices have a dead serial console because
 the reset control usage in the serial driver assume one method of reset
 that gemini doesn't support (this will be fixed in the next version in
 the reset framework so this is the small fix for -rc series). Finally
 we have two rate calculation fixes, one for Exynos and one for Meson SoCs,
 that fix rate inconsistencies.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A handful of critical fixes for changes introduce this merge window.

   - The TI sci_clk_get() API was pretty broken and nobody noticed.

   - There were some CPUfreq crashes on C.H.I.P devices because we
     failed to propagate rates up the clk tree.

   - Also, the Intel Atom PMC clk driver needs to mark a clk critical if
     the firmware has it enabled already so that audio doesn't get
     killed on Baytrail.

   - Gemini devices have a dead serial console because the reset control
     usage in the serial driver assume one method of reset that gemini
     doesn't support (this will be fixed in the next version in the
     reset framework so this is the small fix for -rc series).

   - Finally we have two rate calculation fixes, one for Exynos and one
     for Meson SoCs, that fix rate inconsistencies"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: keystone: sci-clk: Fix sci_clk_get
  clk: meson: mpll: fix mpll0 fractional part ignored
  clk: samsung: exynos5420: The EPLL rate table corrections
  clk: sunxi-ng: sun5i: Add clk_set_rate_parent to the CPU clock
  clk: x86: Do not gate clocks enabled by the firmware
  clk: gemini: Fix reset regression
2017-08-04 16:45:29 -07:00
Linus Torvalds
6999507416 KVM fixes for v4.13-rc4
ARM:
  - Yet another race with VM destruction plugged
  - A set of small vgic fixes
 
 x86:
  - Preserve pending INIT
  - RCU fixes in paravirtual async pf, VM teardown, and VMXOFF emulation
  - nVMX interrupt injection and dirty tracking fixes
  - initialize to make UBSAN happy
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:

   - Yet another race with VM destruction plugged

   - A set of small vgic fixes

  x86:

   - Preserve pending INIT

   - RCU fixes in paravirtual async pf, VM teardown, and VMXOFF
     emulation

   - nVMX interrupt injection and dirty tracking fixes

   - initialize to make UBSAN happy"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: arm/arm64: vgic: Use READ_ONCE fo cmpxchg
  KVM: nVMX: Fix interrupt window request with "Acknowledge interrupt on exit"
  KVM: nVMX: mark vmcs12 pages dirty on L2 exit
  kvm: nVMX: don't flush VMCS12 during VMXOFF or VCPU teardown
  KVM: nVMX: do not pin the VMCS12
  KVM: avoid using rcu_dereference_protected
  KVM: X86: init irq->level in kvm_pv_kick_cpu_op
  KVM: X86: Fix loss of pending INIT due to race
  KVM: async_pf: make rcu irq exit if not triggered from idle task
  KVM: nVMX: fixes to nested virt interrupt injection
  KVM: nVMX: do not fill vm_exit_intr_error_code in prepare_vmcs12
  KVM: arm/arm64: Handle hva aging while destroying the vm
  KVM: arm/arm64: PMU: Fix overflow interrupt injection
  KVM: arm/arm64: Fix bug in advertising KVM_CAP_MSI_DEVID capability
2017-08-04 15:18:27 -07:00
Linus Torvalds
0d5b994407 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Thomas Gleixner:
 "The recent irq core changes unearthed API abuse in the HPET code,
  which manifested itself in a suspend/resume regression.

  The fix replaces the cruft with the proper function calls and cures
  the regression"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/hpet: Cure interface abuse in the resume path
2017-08-04 15:16:09 -07:00
Linus Torvalds
d1faa3e78a Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
 "A single fix for a multiplication overflow in the timer code on 32bit
  systems"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Fix overflow in get_next_timer_interrupt
2017-08-04 15:14:09 -07:00
Linus Torvalds
65f4740e72 ARM: SoC fixes for 4.13
This comes a bit later than I planned, and as a consequence is a larger
 than it should be.
 
 Most of the changes are devicetree fixes, across lots of platforms:
 Renesas, Samsung Exynos, Marvell EBU, TI OMAP, Rockchips, Amlogic Meson,
 Sigma Desings Tango, Allwinner SUNxi and TI Davinci.
 
 Also across many platforms, I applied an older series of simple randconfig
 build fixes. This includes making the CONFIG_MTD_XIP option compile again,
 which had been broken for many years and probably has not been missed, but
 it felt wrong to just remove it completely.
 
 The only other changes are:
 
  - We enable HWSPINLOCK in defconfig to get some Qualcomm boards
    to work out of the box.
 
  - A few regression fixes for Texas Instruments OMAP2+.
 
  - A boot regression fix for the Renesas regulator quirk.
 
  - A suspend/resume fix for Uniphier SoCs, fixing the resume of the
    system bus.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This comes a bit later than I planned, and as a consequence is a
  larger than it should be.

  Most of the changes are devicetree fixes, across lots of platforms:
  Renesas, Samsung Exynos, Marvell EBU, TI OMAP, Rockchips, Amlogic
  Meson, Sigma Desings Tango, Allwinner SUNxi and TI Davinci.

  Also across many platforms, I applied an older series of simple
  randconfig build fixes. This includes making the CONFIG_MTD_XIP option
  compile again, which had been broken for many years and probably has
  not been missed, but it felt wrong to just remove it completely.

  The only other changes are:

   - We enable HWSPINLOCK in defconfig to get some Qualcomm boards to
     work out of the box.

   - A few regression fixes for Texas Instruments OMAP2+.

   - A boot regression fix for the Renesas regulator quirk.

   - A suspend/resume fix for Uniphier SoCs, fixing the resume of the
     system bus"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (43 commits)
  ARM: dts: tango4: Request RGMII RX and TX clock delays
  bus: uniphier-system-bus: set up registers when resuming
  ARM64: dts: marvell: armada-37xx: Fix the number of GPIO on south bridge
  ARM: shmobile: rcar-gen2: Fix deadlock in regulator quirk
  arm64: defconfig: enable missing HWSPINLOCK
  ARM: pxa: select both FB and FB_W100 for eseries
  ARM: ixp4xx: fix ioport_unmap definition
  ARM: ep93xx: use ARM_PATCH_PHYS_VIRT correctly
  ARM: mmp: mark usb_dma_mask as __maybe_unused
  ARM: omap2: mark unused functions as __maybe_unused
  ARM: omap1: avoid unused variable warning
  ARM: sirf: mark sirfsoc_init_late as __maybe_unused
  ARM: ixp4xx: use normal prototype for {read,write}s{b,w,l}
  ARM: omap1/ams-delta: warn about failed regulator enable
  ARM: rpc: rename RAM_SIZE macro
  ARM: w90x900: normalize clk API
  ARM: ep93xx: normalize clk API
  ARM: dts: sun8i: a83t: Switch to CCU device tree binding macros
  arm64: allwinner: sun50i-a64: Correct emac register size
  ARM: dts: sunxi: h3/h5: Correct emac register size
  ...
2017-08-04 15:12:15 -07:00
Linus Torvalds
b3c6858fb1 arm64 fixes:
- Report correct timer frequency to userspace when trapping CNTFRQ_EL0
 
 - Fix race with hardware page table updates when updating access flags
 
 - Silence clang overflow warning in VA_START and PAGE_OFFSET calculations
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Here are some more arm64 fixes for 4.13. The main one is the PTE race
  with the hardware walker, but there are a couple of other things too.

   - Report correct timer frequency to userspace when trapping
     CNTFRQ_EL0

   - Fix race with hardware page table updates when updating access
     flags

   - Silence clang overflow warning in VA_START and PAGE_OFFSET
     calculations"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: avoid overflow in VA_START and PAGE_OFFSET
  arm64: Fix potential race with hardware DBM in ptep_set_access_flags()
  arm64: Use arch_timer_get_rate when trapping CNTFRQ_EL0
2017-08-04 12:11:48 -07:00
Linus Torvalds
0a23ea65ce Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fixes from David Miller:

 - block interrupts properly across the entire MMU context change (both
   the hw MMU context change and the TSB table change) so that we don't
   get a perf event interrupt in the middle. From Rob Gardner.

 - be sure to register hugepages early enough, from Nitin Gupta.

 - UltraSPARC-III user copy exception handling would return garbage for
   the copied length in some circumstances.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix exception handling in UltraSPARC-III memcpy.
  sbus: Convert to using %pOF instead of full_name
  sparc: defconfig: Cleanup from old Kconfig options
  sparc64: Register hugepages during arch init
  sparc64: Prevent perf from running during super critical sections
2017-08-04 10:17:45 -07:00
Linus Torvalds
c63716ab4d A bunch of fixes and follow-ups for -rc1 Luminous patches: issues with
->reencode_message() and last minute RADOS semantic changes in v12.1.2.
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Merge tag 'ceph-for-4.13-rc4' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "A bunch of fixes and follow-ups for -rc1 Luminous patches: issues with
  ->reencode_message() and last minute RADOS semantic changes in
  v12.1.2"

* tag 'ceph-for-4.13-rc4' of git://github.com/ceph/ceph-client:
  libceph: make RECOVERY_DELETES feature create a new interval
  libceph: upmap semantic changes
  crush: assume weight_set != null imples weight_set_size > 0
  libceph: fallback for when there isn't a pool-specific choose_arg
  libceph: don't call ->reencode_message() more than once per message
  libceph: make encode_request_*() work with r_mempool requests
2017-08-04 10:15:11 -07:00
Linus Torvalds
a64c40e79f sound fixes for 4.13-rc4
Now we hit the usual ASoC-fix-flood in the middle of release.
 Most of changes are trivial and device-specific, while one significant
 change is the fix for unbalanced of_graph_*() refcounts.  This
 involved with the change in the graph API itself that had been a bit
 messy.
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Merge tag 'sound-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Now we hit the usual ASoC-fix-flood in the middle of release.

  Most of the changes are trivial and device-specific, while one
  significant change is the fix for unbalanced of_graph_*() refcounts.
  This involved a change in the graph API itself that had been a bit
  messy"

* tag 'sound-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix speaker output from VAIO VPCL14M1R
  device property: Fix usecount for of_graph_get_port_parent()
  ASoC: rt5665: fix wrong register for bclk ratio control
  ASoC: Intel: Use MCLK instead of BLCK as the sysclock for RT5514 codec on kabylake platform
  ASoC: Intel: Enabling ASRC for RT5663 codec on kabylake platform
  ASoC: codecs: msm8916-analog: fix DIG_CLK_CTL_RXD3_CLK_EN define
  ASoC: Intel: Skylake: Fix missing sentinels in sst_acpi_mach
  ASoC: sh: hac: add missing "int ret"
  ASoC: samsung: odroid: Fix EPLL frequency values
  ASoC: sgtl5000: Use snd_soc_kcontrol_codec()
  ASoC: rt5665: fix GPIO6 pin function define
  ASoC: ux500: Restore platform DAI assignments
  ASoC: fix pcm-creation regression
  ASoC: do not close shared backend dailink
  ASoC: pxa: SND_PXA2XX_SOC should depend on HAS_DMA
  ASoC: Intel: Skylake: Fix default dma_buffer_size
  ASoC: rt5663: Update the HW default values based on the shipping version
  ASoC: imx-ssi: add check on platform_get_irq return value
2017-08-04 10:11:13 -07:00
Linus Torvalds
83b89ea4ad IOMMU Fixes for Linux v4.13-rc3
Including:
 
 	- Fix a scheduling-while-atomic bug in the AMD IOMMU driver. It
 	  was found after the checker was enabled earlier.
 
 	- A fix for the virtual APIC code in the AMD IOMMU driver which
 	  delivers device interrupts directly into KVM guests for
 	  assigned devices.
 
 	- Fixes for the recently merged lock-less page-table code for
 	  ARM. The redundant TLB syncs got reverted and locks added
 	  again around the TLB sync code.
 
 	- Fix for error handling in arm_smmu_add_device()
 
 	- Address sanitization fix for arm io-pgtable code
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Merge tag 'iommu-fixes-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:

 - fix a scheduling-while-atomic bug in the AMD IOMMU driver. It was
   found after the checker was enabled earlier.

 - a fix for the virtual APIC code in the AMD IOMMU driver which
   delivers device interrupts directly into KVM guests for assigned
   devices.

 - fixes for the recently merged lock-less page-table code for ARM. The
   redundant TLB syncs got reverted and locks added again around the TLB
   sync code.

 - fix for error handling in arm_smmu_add_device()

 - address sanitization fix for arm io-pgtable code

* tag 'iommu-fixes-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix schedule-while-atomic BUG in initialization code
  iommu/amd: Enable ga_log_intr when enabling guest_mode
  iommu/io-pgtable: Sanitise map/unmap addresses
  iommu/arm-smmu: Fix the error path in arm_smmu_add_device
  Revert "iommu/io-pgtable: Avoid redundant TLB syncs"
  iommu/mtk: Avoid redundant TLB syncs locally
  iommu/arm-smmu: Reintroduce locking around TLB sync operations
2017-08-04 10:05:29 -07:00
Linus Torvalds
8145f373ae MMC core:
- Fix NULL pointer dereference for block I/O during hotplug
 MMC host:
  - sdhci-of-at91: Fix card detect for non-removable cards
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Merge tag 'mmc-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "A couple of mmc fixes intended for v4.13-rc4.

  MMC core:
   - Fix NULL pointer dereference for block I/O during hotplug

  MMC host:
   - sdhci-of-at91: Fix card detect for non-removable cards"

* tag 'mmc-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: block: bypass the queue even if usage is present for hotplug
  mmc: sdhci-of-at91: force card detect value for non removable devices
2017-08-04 10:02:56 -07:00
Linus Torvalds
47d47585d0 just some lonely amd fixes
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Merge tag 'drm-fixes-for-v4.13-rc4' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Either my email ate everything or everyone is on holidays, either way
  all I can find is some lonely AMD fixes"

[ Europe might be on vacation, and the Pacific NW is too hot for work. ]

* tag 'drm-fixes-for-v4.13-rc4' of git://people.freedesktop.org/~airlied/linux:
  drm/amdgpu: Use list_del_init in amdgpu_mn_unregister
  drm/amdgpu: Fix undue fallthroughs in golden registers initialization
  drm/amdgpu: fix header on gfx9 clear state
2017-08-04 09:59:24 -07:00
Linus Torvalds
841fe95303 powerpc fixes for 4.13 #5
Fixes for recently merged code:
  - a fix for the _PAGE_DEVMAP support, which was breaking KVM on Power9 radix
  - avoid a (harmless) lockdep warning in the early SMP code
  - return failure for some uses of dma_set_mask() rather than falling back to 32-bits
  - fix stack setup in watchdog soft_nmi_common() to use emergency stack
  - fix of_irq_to_resource() error check in of_fsl_spi_probe()
 
 Two fixes going to stable:
  - fix saving of Transactional Memory SPRs in core dump
  - fix __check_irq_replay missing decrementer interrupt
 
 And two misc:
  - fix 64-bit boot wrapper build with non-biarch compiler
  - work around a POWER9 PMU hang after state-loss idle
 
 Thanks to:
   Alistair Popple, Aneesh Kumar K.V, Cyril Bur, Gustavo Romero, Jose Ricardo
   Ziviani, Laurent Vivier, Nicholas Piggin, Oliver O'Halloran, Sergei Shtylyov,
   Suraj Jitindar Singh, Thomas Gleixner.
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Merge tag 'powerpc-4.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes for recently merged code:
   - a fix for the _PAGE_DEVMAP support, which was breaking KVM on
     Power9 radix
   - avoid a (harmless) lockdep warning in the early SMP code
   - return failure for some uses of dma_set_mask() rather than falling
     back to 32-bits
   - fix stack setup in watchdog soft_nmi_common() to use emergency
     stack
   - fix of_irq_to_resource() error check in of_fsl_spi_probe()

  Two fixes going to stable:
   - fix saving of Transactional Memory SPRs in core dump
   - fix __check_irq_replay missing decrementer interrupt

  And two misc:
   - fix 64-bit boot wrapper build with non-biarch compiler
   - work around a POWER9 PMU hang after state-loss idle

  Thanks to: Alistair Popple, Aneesh Kumar K.V, Cyril Bur, Gustavo
  Romero, Jose Ricardo Ziviani, Laurent Vivier, Nicholas Piggin, Oliver
  O'Halloran, Sergei Shtylyov, Suraj Jitindar Singh, Thomas Gleixner"

* tag 'powerpc-4.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64: Fix __check_irq_replay missing decrementer interrupt
  powerpc/perf: POWER9 PMU stops after idle workaround
  powerpc/83xx/mpc832x_rdb: fix of_irq_to_resource() error check
  powerpc/64s: Fix stack setup in watchdog soft_nmi_common()
  powerpc/powernv/pci: Return failure for some uses of dma_set_mask()
  powerpc/boot: Fix 64-bit boot wrapper build with non-biarch compiler
  powerpc/smp: Call smp_ops->setup_cpu() directly on the boot CPU
  powerpc/tm: Fix saving of TM SPRs in core dump
  powerpc/mm: Fix pmd/pte_devmap() on non-leaf entries
2017-08-04 09:56:54 -07:00
David S. Miller
0ede1c4013 sparc64: Fix exception handling in UltraSPARC-III memcpy.
Mikael Pettersson reported that some test programs in the strace-4.18
testsuite cause an OOPS.

After some debugging it turns out that garbage values are returned
when an exception occurs, causing the fixup memset() to be run with
bogus arguments.

The problem is that two of the exception handler stubs write the
successfully copied length into the wrong register.

Fixes: ee841d0aff ("sparc64: Convert U3copy_{from,to}_user to accurate exception reporting.")
Reported-by: Mikael Pettersson <mikpelinux@gmail.com>
Tested-by: Mikael Pettersson <mikpelinux@gmail.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-04 09:47:52 -07:00
Nick Desaulniers
82cd588052 arm64: avoid overflow in VA_START and PAGE_OFFSET
The bitmask used to define these values produces overflow, as seen by
this compiler warning:

arch/arm64/kernel/head.S:47:8: warning:
      integer overflow in preprocessor expression
  #elif (PAGE_OFFSET & 0x1fffff) != 0
         ^~~~~~~~~~~
arch/arm64/include/asm/memory.h:52:46: note:
      expanded from macro 'PAGE_OFFSET'
  #define PAGE_OFFSET             (UL(0xffffffffffffffff) << (VA_BITS -
1))
                                      ~~~~~~~~~~~~~~~~~~  ^

It would be preferrable to use GENMASK_ULL() instead, but it's not set
up to be used from assembly (the UL() macro token pastes UL suffixes
when not included in assembly sources).

Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Suggested-by: Yury Norov <ynorov@caviumnetworks.com>
Suggested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-04 15:06:35 +01:00
Catalin Marinas
6d332747fa arm64: Fix potential race with hardware DBM in ptep_set_access_flags()
In a system with DBM (dirty bit management) capable agents there is a
possible race between a CPU executing ptep_set_access_flags() (maybe
non-DBM capable) and a hardware update of the dirty state (clearing of
PTE_RDONLY). The scenario:

a) the pte is writable (PTE_WRITE set), clean (PTE_RDONLY set) and old
   (PTE_AF clear)
b) ptep_set_access_flags() is called as a result of a read access and it
   needs to set the pte to writable, clean and young (PTE_AF set)
c) a DBM-capable agent, as a result of a different write access, is
   marking the entry as young (setting PTE_AF) and dirty (clearing
   PTE_RDONLY)

The current ptep_set_access_flags() implementation would set the
PTE_RDONLY bit in the resulting value overriding the DBM update and
losing the dirty state.

This patch fixes such race by setting PTE_RDONLY to the most permissive
(lowest value) of the current entry and the new one.

Fixes: 66dbd6e61a ("arm64: Implement ptep_set_access_flags() for hardware AF/DBM")
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-04 13:26:11 +01:00
Arnd Bergmann
41c454fa0e Drop unused VPIF endpoints from device-tree.
They should be used only when an actual
 remote-endpoint is connected.
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Merge tag 'davinci-fixes-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes

Pull "DaVinci fixes for v4.13" from Sekhar Nori:

Drop unused VPIF endpoints from device-tree.
They should be used only when an actual
remote-endpoint is connected.

* tag 'davinci-fixes-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: dts: da850-lcdk: drop unused VPIF endpoints
  ARM: dts: da850-evm: drop unused VPIF endpoints
2017-08-04 13:22:33 +02:00
Arnd Bergmann
ae119859a1 Allwinner fixes for 4.13
Two fixes to correct the EMAC blocks memory region size to match the
 datasheet. One that converts raw A83T clock indices to macros from the
 clk dt-binding header, completing the A83T sunxi-ng clk driver.
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Merge tag 'sunxi-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes

Pull "Allwinner fixes for 4.13" from Chen-Yu Tsai:

Two fixes to correct the EMAC blocks memory region size to match the
datasheet. One that converts raw A83T clock indices to macros from the
clk dt-binding header, completing the A83T sunxi-ng clk driver.

* tag 'sunxi-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  ARM: dts: sun8i: a83t: Switch to CCU device tree binding macros
  arm64: allwinner: sun50i-a64: Correct emac register size
  ARM: dts: sunxi: h3/h5: Correct emac register size
2017-08-04 13:04:42 +02:00
Arnd Bergmann
3d8db0a889 Qualcomm ARM64 based defconfig Fixes for v4.13-rc2
* Enable missing HWSPINLOCK
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Merge tag 'qcom-arm64-defconfig-fixes-for-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into fixes

Pull "Qualcomm ARM64 based defconfig Fixes for v4.13-rc2" from Andy Gross:

* Enable missing HWSPINLOCK

* tag 'qcom-arm64-defconfig-fixes-for-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  arm64: defconfig: enable missing HWSPINLOCK
2017-08-04 13:03:24 +02:00
Marc Gonzalez
985333b0ee ARM: dts: tango4: Request RGMII RX and TX clock delays
RX and TX clock delays are required. Request them explicitly.

Fixes: cad008b8a7 ("ARM: dts: tango4: Initial device trees")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-08-04 12:59:30 +02:00