This fixes three issues on move extents ioctl without auto defrag:

a) In ocfs2_find_victim_alloc_group(), we have to convert bits to block
   first in case of global bitmap.

b) In ocfs2_probe_alloc_group(), when finding enough bits in block
   group bitmap, we have to back off move_len to start pos as well,
   otherwise it may corrupt filesystem.

c) In ocfs2_ioctl_move_extents(), set me_threshold both for non-auto
   and auto defrag paths.  Otherwise it will set move_max_hop to 0 and
   finally cause unexpectedly ENOSPC error.

Currently there are no tools triggering the above issues since
defragfs.ocfs2 enables auto defrag by default.  Tested with manually
changing defragfs.ocfs2 to run non auto defrag path.

Link: https://lkml.kernel.org/r/20230220050526.22020-1-heming.zhao@suse.comSigned-off-by: Heming Zhao <heming.zhao@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

code path:

ocfs2_ioctl_move_extents
 ocfs2_move_extents
  ocfs2_defrag_extent
   __ocfs2_move_extent
    + ocfs2_journal_access_di
    + ocfs2_split_extent  //sub-paths call jbd2_journal_restart
    + ocfs2_journal_dirty //crash by jbs2 ASSERT

crash stacks:

PID: 11297  TASK: ffff974a676dcd00  CPU: 67  COMMAND: "defragfs.ocfs2"
 #0 [ffffb25d8dad3900] machine_kexec at ffffffff8386fe01
 #1 [ffffb25d8dad3958] __crash_kexec at ffffffff8395959d
 #2 [ffffb25d8dad3a20] crash_kexec at ffffffff8395a45d
 #3 [ffffb25d8dad3a38] oops_end at ffffffff83836d3f
 #4 [ffffb25d8dad3a58] do_trap at ffffffff83833205
 #5 [ffffb25d8dad3aa0] do_invalid_op at ffffffff83833aa6
 #6 [ffffb25d8dad3ac0] invalid_op at ffffffff84200d18
    [exception RIP: jbd2_journal_dirty_metadata+0x2ba]
    RIP: ffffffffc09ca54a  RSP: ffffb25d8dad3b70  RFLAGS: 00010207
    RAX: 0000000000000000  RBX: ffff9706eedc5248  RCX: 0000000000000000
    RDX: 0000000000000001  RSI: ffff97337029ea28  RDI: ffff9706eedc5250
    RBP: ffff9703c3520200   R8: 000000000f46b0b2   R9: 0000000000000000
    R10: 0000000000000001  R11: 00000001000000fe  R12: ffff97337029ea28
    R13: 0000000000000000  R14: ffff9703de59bf60  R15: ffff9706eedc5250
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #7 [ffffb25d8dad3ba8] ocfs2_journal_dirty at ffffffffc137fb95 [ocfs2]
 #8 [ffffb25d8dad3be8] __ocfs2_move_extent at ffffffffc139a950 [ocfs2]
 #9 [ffffb25d8dad3c80] ocfs2_defrag_extent at ffffffffc139b2d2 [ocfs2]

Analysis

This bug has the same root cause of 'commit 7f27ec97 ("ocfs2: call
ocfs2_journal_access_di() before ocfs2_journal_dirty() in
ocfs2_write_end_nolock()")'.  For this bug, jbd2_journal_restart() is
called by ocfs2_split_extent() during defragmenting.

How to fix

For ocfs2_split_extent() can handle journal operations totally by itself. 
Caller doesn't need to call journal access/dirty pair, and caller only
needs to call journal start/stop pair.  The fix method is to remove
journal access/dirty from __ocfs2_move_extent().

The discussion for this patch:
https://oss.oracle.com/pipermail/ocfs2-devel/2023-February/000647.html

Link: https://lkml.kernel.org/r/20230217003717.32469-1-heming.zhao@suse.comSigned-off-by: Heming Zhao <heming.zhao@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Georgi's old email is still picked up by the likes of get_maintainer.pl
and it keeps bouncing every time one submits an interconnect patch.  Map
it to his current @kernel.org one.

Link: https://lkml.kernel.org/r/20230217203516.826424-1-konrad.dybcio@linaro.orgSigned-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Georgi Djakov <djakov@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Kirill Tkhai <tkhai@ya.ru>
Cc: Qais Yousef <qyousef@layalina.io>
Cc: Vasily Averin <vasily.averin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

After a memory error happens on a clean folio, a process unexpectedly
receives SIGBUS when it accesses the error page.  This SIGBUS killing is
pointless and simply degrades the level of RAS of the system, because the
clean folio can be dropped without any data lost on memory error handling
as we do for a clean pagecache.

When memory_failure() is called on a clean folio, try_to_unmap() is called
twice (one from split_huge_page() and one from hwpoison_user_mappings()). 
The root cause of the issue is that pte conversion to hwpoisoned entry is
now done in the first call of try_to_unmap() because PageHWPoison is
already set at this point, while it's actually expected to be done in the
second call.  This behavior disturbs the error handling operation like
removing pagecache, which results in the malfunction described above.

So convert TTU_IGNORE_HWPOISON into TTU_HWPOISON and set TTU_HWPOISON only
when we really intend to convert pte to hwpoison entry.  This can prevent
other callers of try_to_unmap() from accidentally converting to hwpoison
entries.

Link: https://lkml.kernel.org/r/20230221085905.1465385-1-naoya.horiguchi@linux.dev
Fixes: a42634a6 ("readahead: Use a folio in read_pages()")
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

DFLTCC deflate with Z_NO_FLUSH might generate a corrupted stream when the
output buffer is not large enough to fit all the deflate output at once. 
The problem takes place on closing the deflate block since flush_pending()
might leave some output bits not written.  Similar problem for software
deflate with Z_BLOCK flush option (not supported by kernel zlib deflate)
has been fixed a while ago in userspace zlib but the fix never got to the
kernel.

Now flush_pending() flushes the bit buffer before copying out the byte
buffer, in order to really flush as much as possible.

Currently there are no users of DFLTCC deflate with Z_NO_FLUSH option in
the kernel so the problem remained hidden for a while.

This commit is based on the old zlib commit:
https://github.com/madler/zlib/commit/0b828b4

Link: https://lkml.kernel.org/r/20230221131617.3369978-2-zaslonko@linux.ibm.comSigned-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

damon_get_folio() would always increase folio _refcount and
folio_isolate_lru() would increase folio _refcount if the folio's lru flag
is set.

If an unevictable folio isolated successfully, there will be two more
_refcount.  The one from folio_isolate_lru() will be decreased in
folio_puback_lru(), but the other one from damon_get_folio() will be left
behind.  This causes a pin page.

Whatever the case, the _refcount from damon_get_folio() should be
decreased.

Link: https://lkml.kernel.org/r/20230222064223.6735-1-andrew.yang@mediatek.com
Fixes: 57223ac2 ("mm/damon/paddr: support the pageout scheme")
Signed-off-by: andrew.yang <andrew.yang@mediatek.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>	[5.16.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

In case 4, we are shrinking 'prev' (PPPP in the comment) and expanding
'mid' (NNNN).  So we need to make sure 'mid' clones the anon_vma from
'prev', if it doesn't have any.  After commit 0503ea8f ("mm/mmap:
remove __vma_adjust()") we can fail to do that due to wrong parameters for
dup_anon_vma().  The call is a no-op because res == next, adjust == mid
and mid == next.  Fix it.

Link: https://lkml.kernel.org/r/ad91d62b-37eb-4b73-707a-3c45c9e16256@suse.cz
Fixes: 0503ea8f ("mm/mmap: remove __vma_adjust()")
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Pull clk updates from Stephen Boyd:
 "We have one small patch to the clk core this time around. It fixes a
  corner case with the CLK_OPS_PARENT_ENABLE flag combined with
  clk_core_is_enabled() where it hangs the system. We'll simply assume
  the clk is disabled if the parent is disabled and the flag is set.
  Trying to turn on the parent to check the enable state of the clk runs
  into system hangs at boot. We let this bake in -next for a couple
  weeks to make sure there aren't any more issues because the last
  attempt to fix this ran into hangs and had to be reverted.

  Note: There were some more patches to the core framework around
  sync_state and disabling unused clks, but I asked for that to be
  reverted from the qcom PR because it isn't ready and we're still
  discussing the best solution on the list.

  Outside of the core clk framework, we have the usual collection of clk
  driver updates and support for new SoCs (which seems to never stop).
  The dirstat is dominated by Qualcomm because they added support for
  quite a few SoCs this time around and also migrated quite a few of
  their drivers to clk_parent_data. The other big diff is in the
  Mediatek clk drivers that saw a significant rework this cycle to
  similarly modernize the code, and we'll see that work continue in the
  next cycle as well. Nothing really jumps out as scary here, except
  that the significant churn in parent data descriptions can have typos
  that go unnoticed. More details below.

  Core:
   - Honor CLK_OPS_PARENT_ENABLE in clk_core_is_enabled()

  New Drivers:
   - Add a new clk-gpr-mux clock type and use it on i.MX6Q to add ENET
     ref clocks
   - Support for Mediatek MT7891 SoC clks
   - Support for many Qualcomm clk controllers:
      - QDU1000/QRU1000 global clock controller
      - SA8775P global clock controller
      - SM8550 TCSR and display clock controller
      - SM6350 clock controller
      - MSM8996 CBF and APCS clock controllers

  Updates:
   - Various cleanups and improvements to Mediatek clk drivers to reduce
     code size and modernize the drivers
   - Support for Versa 5P49V60 clks
   - Disable R-Car H3 ES1.*, as it was only available to an internal
     development group and needed a lot of quirks and workarounds
   - Add PWM, Compare-Match Timer (TIM), USB, SDHI, and eMMC clocks and
     resets on Renesas RZ/V2M
   - Add display clocks on Renesas R-Car V4H
   - Add Camera Receiving Unit (CRU) clocks and resets on Renesas RZ/G2L
   - Free the imx_uart_clocks even if imx_register_uart_clocks returns
     early
   - Get the stdout clocks count from device tree on i.MX
   - Drop the clock count argument from imx_register_uart_clocks()
   - Keep the uart clocks on i.MX93 for when earlycon is used
   - Fix SPDX comment in i.MX6SLL clocks bindings header
   - Drop some unnecessary spaces from i.MX8ULP clocks bindings header
   - Add imx_obtain_fixed_of_clock() for allowing to add a clock that is
     not configured via devicetree
   - Fix the ENET1 gate configuration for i.MX6UL according to the
     reference manual
   - Add ENET refclock mux support for i.MX6UL
   - Add support for USB host/device configuration on Renesas RZ/N1
   - Add PLL2 programming support, and CAN-FD clocks on Renesas R-Car
     V4H
   - Add D1 CAN bus gates and resets for Allwinner
   - Mark D1 CPUX clock as critical on Allwinner
   - Reuse D1 driver for Allwinner R528/T113
   - Cleanup sunxi-ng Kconfig
   - Fix sunxi-ng kernel-doc issues
   - Model Allwinner H3/H5 DRAM clock as fixed clock
   - Use .determine_rate() instead of .round_rate() for the dualdiv,
     mpll, sclk-div and cpu-dyn-div amlogic clock drivers
   - DDR clocks were marked as critical in the proper clock driver for
     each AT91 SoC such that drivers/memory/atmel-sdramc.c to be deleted
     in the next releases as it only does clock enablement
   - Patch to avoid compiling dt-compat.o for all AT91 SoCs as only some
     of them may use it
   - Support synchronous power_off requests in the qcom GDSC driver for
     proper GPU power collapse
   - Drop test clocks from various Qualcomm clk drivers
   - Update parent references to use clk_parent_data/clk_hw in various
     Qualcomm clk drivers
   - Fixes for the Qualcomm MSM8996 CPU clock controller
   - Transition Qualcomm MSM8974 GCC off the externally defined
     sleep_clk
   - Add GDSCs in the global clock controller for Qualcomm QCS404
   - The SDCC core clocks on Qualcomm SM6115 are moved to floor_ops
   - Programming of clk_dis_wait for GPU CX GDSC on Qualcomm SC7180 and
     SDM845 are moved to use the recently introduced properties in the
     GDSC struct
   - Qualcomm's RPMh clock driver gains SM8550 and SA8775P clocks, and
     the IPA clock is added on a variety of platforms
   - De-duplicate identical clks in Qualcomm SMD RPM clk driver
   - Add a few missing clocks across msm8998, msm8992, msm8916, qcs404
     to Qualcomm SDM RPM clk driver
   - Various Qualcomm clk drivers use devm_pm_runtime_enable() to
     simplify"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (228 commits)
  clk: qcom: apcs-msm8986: Include bitfield.h for FIELD_PREP
  clk: qcom: Revert sync_state based clk_disable_unused
  clk: imx: pll14xx: fix recalc_rate for negative kdiv
  clk: rs9: Drop unused pin_xin field
  MAINTAINERS: clk: imx: Add Peng Fan as reviewer
  clk: sprd: Add dependency for SPRD_UMS512_CLK
  clk: ralink: fix 'mt7621_gate_is_enabled()' function
  clk: mediatek: clk-mtk: Remove unneeded semicolon
  dt-bindings: clock: remove stih416 bindings
  dt-bindings: clock: add loongson-2 clock
  dt-bindings: clock: add loongson-2 clock include file
  clk: imx: fix compile testing imxrt1050
  clk: Honor CLK_OPS_PARENT_ENABLE in clk_core_is_enabled()
  clk: imx: set imx_clk_gpr_mux_ops storage-class-specifier to static
  clk: renesas: rcar-gen3: Disable R-Car H3 ES1.*
  dt-bindings: clock: Merge qcom,gpucc-sm8350 into qcom,gpucc.yaml
  clk: qcom: gpucc-sdm845: fix clk_dis_wait being programmed for CX GDSC
  clk: qcom: gpucc-sc7180: fix clk_dis_wait being programmed for CX GDSC
  dt-bindings: clock: qcom,sa8775p-gcc: add the power-domains property
  clk: qcom: cpu-8996: add missing cputype include
  ...

Pull mailbox updates from Jassi Brar:

 - qcom: misc changes to bindings for sa8775p, QDU1000/QRU1000, IPQ5332,
   SDX55, msm8976, glink-rpm-edge

 - sti: convert to DT schema

 - zynq: switch to flexible array to simplify code

* tag 'mailbox-v6.3' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  dt-bindings: mailbox: qcom-ipcc: Add compatible for QDU1000/QRU1000
  mailbox: qcom-apcs-ipc: add IPQ5332 APSS clock support
  dt-bindings: mailbox: qcom: add compatible for the IPQ5332 SoC
  dt-bindings: remoteproc: qcom,glink-rpm-edge: convert to DT schema
  mailbox: qcom-apcs-ipc: enable APCS clock device for MSM8996
  dt-bindings: mailbox: qcom: add #clock-cells to msm8996 example
  dt-bindings: mailbox: qcom: add missing platforms to conditional clauses
  dt-bindings: mailbox: qcom: correct the list of platforms using clocks
  dt-bindings: mailbox: qcom: enable syscon compatible for msm8976
  dt-bindings: mailbox: qcom: add SDX55 compatible
  dt-bindings: mailbox: qcom-ipcc: document the sa8775p platform
  dt-bindings: mailbox: sti-mailbox: convert to DT schema
  mailbox: zynq: Switch to flexible array to simplify code

Pull MTD updates from Miquel Raynal:
 "MTD changes:

   - parsers: ofpart: add workaround for #size-cells 0

   - dt-bindings: partitions: Fix partition node name pattern

   - dataflash: remove duplicate SPI ID table

  Raw NAND core changes:

   - Check the data only read pattern only once

   - Prepare the late addition of supported operation checks

   - Support for sequential cache reads

   - Fix nand_chip kdoc

  Raw NAND driver changes:

   - Fsl_elbc: Propagate HW ECC settings to HW

   - Marvell: Add missing layouts

   - Pasemi: Don't use static data to track per-device state

   - Sunxi:
      - Fix the size of the last OOB region
      - Remove an unnecessary check
      - Remove an unnecessary check
      - Clean up chips after failed init
      - Precompute the ECC_CTL register value
      - Embed sunxi_nand_hw_ecc by value
      - Update OOB layout to match hardware

   - tmio_nand: Remove driver

   - vf610_nfc: Use regular comments for functions

  SPI-NAND driver changes:

   - Add support for AllianceMemory AS5F34G04SND

   - Macronix: use scratch buffer for DMA operation

  NAND ECC changes:

   - Mediatek:
      - Add ECC support fot MT7986 IC
      - Add compatible for MT7986
      - dt-bindings: Split ECC engine with rawnand controller

  SPI NOR changes:

   - Misc core fixes

  SPI NOR driver changes:

   - Spansion: Minor fixes"

* tag 'mtd/for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (33 commits)
  mtd: parsers: ofpart: add workaround for #size-cells 0
  mtd: rawnand: sunxi: Precompute the ECC_CTL register value
  mtd: rawnand: sunxi: Embed sunxi_nand_hw_ecc by value
  mtd: rawnand: sunxi: Update OOB layout to match hardware
  mtd: spi-nor: Sort headers alphabetically
  mtd: spi-nor: Fix shift-out-of-bounds in spi_nor_set_erase_type
  mtd: nand: ecc-mtk: Add ECC support fot MT7986 IC
  dt-bindings: mtd: mediatek,nand-ecc-engine: Add compatible for MT7986
  dt-bindings: mtd: Split ECC engine with rawnand controller
  mtd: rawnand: fsl_elbc: Propagate HW ECC settings to HW
  mtd: spinand: Add support for AllianceMemory AS5F34G04SND
  dt-bindings: mtd: partitions: Fix partition node name pattern
  mtd: spi-nor: Create macros to define chip IDs and geometries
  mtd: spi-nor: spansion: Make CFRx reg fields generic
  mtd: spi-nor: spansion: Consider reserved bits in CFR5 register
  mtd: spi-nor: core: fix implicit declaration warning
  mtd: spinand: macronix: use scratch buffer for DMA operation
  mtd: rawnand: Fix nand_chip kdoc
  mtd: rawnand: vf610_nfc: use regular comments for functions
  mtd: rawnand: Support for sequential cache reads
  ...

Pull input updates from Dmitry Torokhov:

 - a set of tweaks to iqs269a touch controller driver

 - a fix for ads7846 driver to properly handle 7845 chip

 - cap11xx driver will support cap1203, cap1293 and cap1298 models

 - xpad driver will support 8BitDo Pro 2 Wired Controller

 - input drivers have been switched to DEFINE_SIMPLE_DEV_PM_OPS() and
   pm_sleep_ptr()

 - other miscellaneous fixes and tweaks

* tag 'input-for-v6.3-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (113 commits)
  dt-bindings: input: iqs626a: Redefine trackpad property types
  Input: iqs626a - drop unused device node references
  dt-bindings: input: touchscreen: st,stmfts: convert to dtschema
  Input: cyttsp5 - fix bitmask for touch buttons
  Input: exc3000 - properly stop timer on shutdown
  Input: synaptics-rmi4 - fix SPI device ID
  Input: cap11xx - add support for cap1203, cap1293 and cap1298
  dt-bindings: input: microchip,cap11xx: add cap1203, cap1293 and cap1298
  Input: pmic8xxx-keypad - fix a Kconfig spelling mistake & hyphenation
  Input: edt-ft5x06 - fix typo in a comment
  Input: tegra-kbc - use devm_platform_get_and_ioremap_resource()
  Input: st-keyscan - use devm_platform_get_and_ioremap_resource()
  Input: spear-keyboard - use devm_platform_get_and_ioremap_resource()
  Input: olpc_apsp - use devm_platform_get_and_ioremap_resource()
  Input: arc_ps2 - use devm_platform_get_and_ioremap_resource()
  Input: apbps2 - use devm_platform_get_and_ioremap_resource()
  Input: altera_ps2 - use devm_platform_get_and_ioremap_resource()
  Input: ads7846 - don't check penirq immediately for 7845
  Input: ads7846 - always set last command to PWRDOWN
  Input: ads7846 - don't report pressure for ads7845
  ...

Pull kprobes cleanup updates from Masami Hiramatsu:
 "These are probe events cleanups, no new features but improve
  readability:

   - Rename print_probe_args() to trace_probe_print_args() and
     un-inline it

   - Introduce a set of default data fetch functions for dynamic
     probe events

   - Extract common code of data fetch process of dynamic probe events"

* tag 'probes-v6.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  kernel/trace: extract common part in process_fetch_insn
  kernel/trace: Provide default impelentations defined in trace_probe_tmpl.h
  kernel/trace: Introduce trace_probe_print_args and use it in *probes

Pull kernel concurrency sanitizer (KCSAN) updates from Paul McKenney:
 "This fixes gcc-11 errors for x86_64 KCSAN-enabled kernel builds by
  selecting the CONSTRUCTORS Kconfig option"

* tag 'kcsan.2023.02.24a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  kcsan: select CONFIG_CONSTRUCTORS

Merge tag 'flex-array-transformations-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull flexible-array updates from Gustavo Silva:
 "Transform zero-length arrays, in unions, into flexible arrays"

* tag 'flex-array-transformations-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  bcache: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper
  mm/memremap: Replace zero-length array with DECLARE_FLEX_ARRAY() helper
  exportfs: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

Pull alpha updates from Al Viro:
 "Mostly small janitorial fixes but there's also more important ones: a
  patch to fix loading large modules from Edward Humes, and some fixes
  from Al Viro"

[ The fixes from Al mostly came in separately through Al's trees too and
  are now duplicated..   - Linus ]

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
  alpha: in_irq() cleanup
  alpha: lazy FPU switching
  alpha/boot/misc: trim unused declarations
  alpha/boot/tools/objstrip: fix the check for ELF header
  alpha/boot: fix the breakage from -isystem series...
  alpha: fix FEN fault handling
  alpha: Avoid comma separated statements
  alpha: fixed a typo in core_cia.c
  alpha: remove unused __SLOW_DOWN_IO and SLOW_DOWN_IO definitions
  alpha: update config files
  alpha: fix R_ALPHA_LITERAL reloc for large modules
  alpha: Add some spaces to ensure format specification
  alpha: replace NR_SYSCALLS by NR_syscalls
  alpha: Remove redundant local asm header redirections
  alpha: Implement "current_stack_pointer"
  alpha: remove redundant err variable
  alpha: osf_sys: reduce kernel log spamming on invalid osf_mount call typenr

Pull VFIO updates from Alex Williamson:

 - Remove redundant resource check in vfio-platform (Angus Chen)

 - Use GFP_KERNEL_ACCOUNT for persistent userspace allocations, allowing
   removal of arbitrary kernel limits in favor of cgroup control (Yishai
   Hadas)

 - mdev tidy-ups, including removing the module-only build restriction
   for sample drivers, Kconfig changes to select mdev support,
   documentation movement to keep sample driver usage instructions with
   sample drivers rather than with API docs, remove references to
   out-of-tree drivers in docs (Christoph Hellwig)

 - Fix collateral breakages from mdev Kconfig changes (Arnd Bergmann)

 - Make mlx5 migration support match device support, improve source and
   target flows to improve pre-copy support and reduce downtime (Yishai
   Hadas)

 - Convert additional mdev sysfs case to use sysfs_emit() (Bo Liu)

 - Resolve copy-paste error in mdev mbochs sample driver Kconfig (Ye
   Xingchen)

 - Avoid propagating missing reset error in vfio-platform if reset
   requirement is relaxed by module option (Tomasz Duszynski)

 - Range size fixes in mlx5 variant driver for missed last byte and
   stricter range calculation (Yishai Hadas)

 - Fixes to suspended vaddr support and locked_vm accounting, excluding
   mdev configurations from the former due to potential to indefinitely
   block kernel threads, fix underflow and restore locked_vm on new mm
   (Steve Sistare)

 - Update outdated vfio documentation due to new IOMMUFD interfaces in
   recent kernels (Yi Liu)

 - Resolve deadlock between group_lock and kvm_lock, finally (Matthew
   Rosato)

 - Fix NULL pointer in group initialization error path with IOMMUFD (Yan
   Zhao)

* tag 'vfio-v6.3-rc1' of https://github.com/awilliam/linux-vfio: (32 commits)
  vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd
  docs: vfio: Update vfio.rst per latest interfaces
  vfio: Update the kdoc for vfio_device_ops
  vfio/mlx5: Fix range size calculation upon tracker creation
  vfio: no need to pass kvm pointer during device open
  vfio: fix deadlock between group lock and kvm lock
  vfio: revert "iommu driver notify callback"
  vfio/type1: revert "implement notify callback"
  vfio/type1: revert "block on invalid vaddr"
  vfio/type1: restore locked_vm
  vfio/type1: track locked_vm per dma
  vfio/type1: prevent underflow of locked_vm via exec()
  vfio/type1: exclude mdevs from VFIO_UPDATE_VADDR
  vfio: platform: ignore missing reset if disabled at module init
  vfio/mlx5: Improve the target side flow to reduce downtime
  vfio/mlx5: Improve the source side flow upon pre_copy
  vfio/mlx5: Check whether VF is migratable
  samples: fix the prompt about SAMPLE_VFIO_MDEV_MBOCHS
  vfio/mdev: Use sysfs_emit() to instead of sprintf()
  vfio-mdev: add back CONFIG_VFIO dependency
  ...

Pull virtio updates from Michael Tsirkin:

 - device feature provisioning in ifcvf, mlx5

 - new SolidNET driver

 - support for zoned block device in virtio blk

 - numa support in virtio pmem

 - VIRTIO_F_RING_RESET support in vhost-net

 - more debugfs entries in mlx5

 - resume support in vdpa

 - completion batching in virtio blk

 - cleanup of dma api use in vdpa

 - now simulating more features in vdpa-sim

 - documentation, features, fixes all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (64 commits)
  vdpa/mlx5: support device features provisioning
  vdpa/mlx5: make MTU/STATUS presence conditional on feature bits
  vdpa: validate device feature provisioning against supported class
  vdpa: validate provisioned device features against specified attribute
  vdpa: conditionally read STATUS in config space
  vdpa: fix improper error message when adding vdpa dev
  vdpa/mlx5: Initialize CVQ iotlb spinlock
  vdpa/mlx5: Don't clear mr struct on destroy MR
  vdpa/mlx5: Directly assign memory key
  tools/virtio: enable to build with retpoline
  vringh: fix a typo in comments for vringh_kiov
  vhost-vdpa: print warning when vhost_vdpa_alloc_domain fails
  scsi: virtio_scsi: fix handling of kmalloc failure
  vdpa: Fix a couple of spelling mistakes in some messages
  vhost-net: support VIRTIO_F_RING_RESET
  vhost-scsi: convert sysfs snprintf and sprintf to sysfs_emit
  vdpa: mlx5: support per virtqueue dma device
  vdpa: set dma mask for vDPA device
  virtio-vdpa: support per vq dma device
  vdpa: introduce get_vq_dma_device()
  ...

Pull kvm updates from Paolo Bonzini:
 "ARM:

   - Provide a virtual cache topology to the guest to avoid
     inconsistencies with migration on heterogenous systems. Non secure
     software has no practical need to traverse the caches by set/way in
     the first place

   - Add support for taking stage-2 access faults in parallel. This was
     an accidental omission in the original parallel faults
     implementation, but should provide a marginal improvement to
     machines w/o FEAT_HAFDBS (such as hardware from the fruit company)

   - A preamble to adding support for nested virtualization to KVM,
     including vEL2 register state, rudimentary nested exception
     handling and masking unsupported features for nested guests

   - Fixes to the PSCI relay that avoid an unexpected host SVE trap when
     resuming a CPU when running pKVM

   - VGIC maintenance interrupt support for the AIC

   - Improvements to the arch timer emulation, primarily aimed at
     reducing the trap overhead of running nested

   - Add CONFIG_USERFAULTFD to the KVM selftests config fragment in the
     interest of CI systems

   - Avoid VM-wide stop-the-world operations when a vCPU accesses its
     own redistributor

   - Serialize when toggling CPACR_EL1.SMEN to avoid unexpected
     exceptions in the host

   - Aesthetic and comment/kerneldoc fixes

   - Drop the vestiges of the old Columbia mailing list and add [Oliver]
     as co-maintainer

  RISC-V:

   - Fix wrong usage of PGDIR_SIZE instead of PUD_SIZE

   - Correctly place the guest in S-mode after redirecting a trap to the
     guest

   - Redirect illegal instruction traps to guest

   - SBI PMU support for guest

  s390:

   - Sort out confusion between virtual and physical addresses, which
     currently are the same on s390

   - A new ioctl that performs cmpxchg on guest memory

   - A few fixes

  x86:

   - Change tdp_mmu to a read-only parameter

   - Separate TDP and shadow MMU page fault paths

   - Enable Hyper-V invariant TSC control

   - Fix a variety of APICv and AVIC bugs, some of them real-world, some
     of them affecting architecurally legal but unlikely to happen in
     practice

   - Mark APIC timer as expired if its in one-shot mode and the count
     underflows while the vCPU task was being migrated

   - Advertise support for Intel's new fast REP string features

   - Fix a double-shootdown issue in the emergency reboot code

   - Ensure GIF=1 and disable SVM during an emergency reboot, i.e. give
     SVM similar treatment to VMX

   - Update Xen's TSC info CPUID sub-leaves as appropriate

   - Add support for Hyper-V's extended hypercalls, where "support" at
     this point is just forwarding the hypercalls to userspace

   - Clean up the kvm->lock vs. kvm->srcu sequences when updating the
     PMU and MSR filters

   - One-off fixes and cleanups

   - Fix and cleanup the range-based TLB flushing code, used when KVM is
     running on Hyper-V

   - Add support for filtering PMU events using a mask. If userspace
     wants to restrict heavily what events the guest can use, it can now
     do so without needing an absurd number of filter entries

   - Clean up KVM's handling of "PMU MSRs to save", especially when vPMU
     support is disabled

   - Add PEBS support for Intel Sapphire Rapids

   - Fix a mostly benign overflow bug in SEV's
     send|receive_update_data()

   - Move several SVM-specific flags into vcpu_svm

  x86 Intel:

   - Handle NMI VM-Exits before leaving the noinstr region

   - A few trivial cleanups in the VM-Enter flows

   - Stop enabling VMFUNC for L1 purely to document that KVM doesn't
     support EPTP switching (or any other VM function) for L1

   - Fix a crash when using eVMCS's enlighted MSR bitmaps

  Generic:

   - Clean up the hardware enable and initialization flow, which was
     scattered around multiple arch-specific hooks. Instead, just let
     the arch code call into generic code. Both x86 and ARM should
     benefit from not having to fight common KVM code's notion of how to
     do initialization

   - Account allocations in generic kvm_arch_alloc_vm()

   - Fix a memory leak if coalesced MMIO unregistration fails

  selftests:

   - On x86, cache the CPU vendor (AMD vs. Intel) and use the info to
     emit the correct hypercall instruction instead of relying on KVM to
     patch in VMMCALL

   - Use TAP interface for kvm_binary_stats_test and tsc_msrs_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (325 commits)
  KVM: SVM: hyper-v: placate modpost section mismatch error
  KVM: x86/mmu: Make tdp_mmu_allowed static
  KVM: arm64: nv: Use reg_to_encoding() to get sysreg ID
  KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2 changes
  KVM: arm64: nv: Filter out unsupported features from ID regs
  KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2
  KVM: arm64: nv: Allow a sysreg to be hidden from userspace only
  KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor
  KVM: arm64: nv: Add accessors for SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2
  KVM: arm64: nv: Handle SMCs taken from virtual EL2
  KVM: arm64: nv: Handle trapped ERET from virtual EL2
  KVM: arm64: nv: Inject HVC exceptions to the virtual EL2
  KVM: arm64: nv: Support virtual EL2 exceptions
  KVM: arm64: nv: Handle HCR_EL2.NV system register traps
  KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state
  KVM: arm64: nv: Add EL2 system registers to vcpu context
  KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x
  KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set
  KVM: arm64: nv: Introduce nested virtualization VCPU feature
  KVM: arm64: Use the S2 MMU context to iterate over S2 table
  ...

Pull RISC-V updates from Palmer Dabbelt:
 "There's a bunch of fixes/cleanups throughout the tree as usual, but we
  also have a handful of new features:

   - Various improvements to the extension detection and alternative
     patching infrastructure

   - Zbb-optimized string routines

   - Support for cpu-capacity in the RISC-V DT bindings

   - Zicbom no longer depends on toolchain support

   - Some performance and code size improvements to ftrace

   - Support for ARCH_WANT_LD_ORPHAN_WARN

   - Oops now contain the faulting instruction"

* tag 'riscv-for-linus-6.3-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (67 commits)
  RISC-V: add a spin_shadow_stack declaration
  riscv: mm: hugetlb: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
  riscv: Add header include guards to insn.h
  riscv: alternative: proceed one more instruction for auipc/jalr pair
  riscv: Avoid enabling interrupts in die()
  riscv, mm: Perform BPF exhandler fixup on page fault
  RISC-V: take text_mutex during alternative patching
  riscv: hwcap: Don't alphabetize ISA extension IDs
  RISC-V: fix ordering of Zbb extension
  riscv: jump_label: Fixup unaligned arch_static_branch function
  RISC-V: Only provide the single-letter extensions in HWCAP
  riscv: mm: fix regression due to update_mmu_cache change
  scripts/decodecode: Add support for RISC-V
  riscv: Add instruction dump to RISC-V splats
  riscv: select ARCH_WANT_LD_ORPHAN_WARN for !XIP_KERNEL
  riscv: vmlinux.lds.S: explicitly catch .init.bss sections from EFI stub
  riscv: vmlinux.lds.S: explicitly catch .riscv.attributes sections
  riscv: vmlinux.lds.S: explicitly catch .rela.dyn symbols
  riscv: lds: define RUNTIME_DISCARD_EXIT
  RISC-V: move some stray __RISCV_INSN_FUNCS definitions from kprobes
  ...

Pull powerpc updates from Michael Ellerman:

 - Support for configuring secure boot with user-defined keys on PowerVM
   LPARs

 - Simplify the replay of soft-masked IRQs by making it non-recursive

 - Add support for KCSAN on 64-bit Book3S

 - Improvements to the API & code which interacts with RTAS (pseries
   firmware)

 - Change 32-bit powermac to assign PCI bus numbers per domain by
   default

 - Some improvements to the 32-bit BPF JIT

 - Various other small features and fixes

Thanks to Anders Roxell, Andrew Donnellan, Andrew Jeffery, Benjamin
Gray, Christophe Leroy, Frederic Barrat, Ganesh Goudar, Geoff Levand,
Greg Kroah-Hartman, Jan-Benedict Glaw, Josh Poimboeuf, Kajol Jain,
Laurent Dufour, Mahesh Salgaonkar, Mathieu Desnoyers, Mimi Zohar, Murphy
Zhou, Nathan Chancellor, Nathan Lynch, Nayna Jain, Nicholas Piggin, Pali
Rohár, Petr Mladek, Rohan McLure, Russell Currey, Sachin Sant, Sathvika
Vasireddy, Sourabh Jain, Stefan Berger, Stephen Rothwell, and Sudhakar
Kuppusamy.

* tag 'powerpc-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (114 commits)
  powerpc/pseries: Avoid hcall in plpks_is_available() on non-pseries
  powerpc: dts: turris1x.dts: Set lower priority for CPLD syscon-reboot
  powerpc/e500: Add missing prototype for 'relocate_init'
  powerpc/64: Fix unannotated intra-function call warning
  powerpc/epapr: Don't use wrteei on non booke
  powerpc: Pass correct CPU reference to assembler
  powerpc/mm: Rearrange if-else block to avoid clang warning
  powerpc/nohash: Fix build with llvm-as
  powerpc/nohash: Fix build error with binutils >= 2.38
  powerpc/pseries: Fix endianness issue when parsing PLPKS secvar flags
  macintosh: windfarm: Use unsigned type for 1-bit bitfields
  powerpc/kexec_file: print error string on usable memory property update failure
  powerpc/machdep: warn when machine_is() used too early
  powerpc/64: Replace -mcpu=e500mc64 by -mcpu=e5500
  powerpc/eeh: Set channel state after notifying the drivers
  selftests/powerpc: Fix incorrect kernel headers search path
  powerpc/rtas: arch-wide function token lookup conversions
  powerpc/rtas: introduce rtas_function_token() API
  powerpc/pseries/lpar: convert to papr_sysparm API
  powerpc/pseries/hv-24x7: convert to papr_sysparm API
  ...

Pull MIPS updates from Thomas Bogendoerfer:
 "Just cleanups and fixes"

* tag 'mips_6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: vpe-mt: drop physical_memsize
  mips: fix syscall_get_nr
  MIPS: SMP-CPS: fix build error when HOTPLUG_CPU not set
  MIPS: DTS: jz4780: add #clock-cells to rtc_dev
  MIPS: dts: Boston: Fix dtc 'pci_device_reg' warning
  mips: dts: ralink: mt7621: add port@5 as CPU port
  mips: dts: align LED node names with dtschema
  MIPS: ralink: Use devm_platform_get_and_ioremap_resource()
  MIPS: pci-mt7620: Use devm_platform_get_and_ioremap_resource()
  MIPS: pci: lantiq: Use devm_platform_get_and_ioremap_resource()
  MIPS: lantiq: xway: Use devm_platform_get_and_ioremap_resource()
  MIPS: BCM47XX: Add support for Linksys E2500 V3
  mips: ralink: make SOC_MT7621 select PINCTRL_MT7621 and fix help section
  MIPS: DTS: CI20: fix otg power gpio
  MIPS: dts: lantiq: Remove bogus interrupt-parent; line
  MIPS: Fix a compilation issue
  MIPS: remove CONFIG_MIPS_LD_CAN_LINK_VDSO
  mips: Realtek RTL: select NO_EXCEPT_FILL
  MIPS: OCTEON: octeon-usb: Consolidate error messages

Pull Compute Express Link (CXL) updates from Dan Williams:
 "To date Linux has been dependent on platform-firmware to map CXL RAM
  regions and handle events / errors from devices. With this update we
  can now parse / update the CXL memory layout, and report events /
  errors from devices. This is a precursor for the CXL subsystem to
  handle the end-to-end "RAS" flow for CXL memory. i.e. the flow that
  for DDR-attached-DRAM is handled by the EDAC driver where it maps
  system physical address events to a field-replaceable-unit (FRU /
  endpoint device). In general, CXL has the potential to standardize
  what has historically been a pile of memory-controller-specific error
  handling logic.

  Another change of note is the default policy for handling RAM-backed
  device-dax instances. Previously the default access mode was "device",
  mmap(2) a device special file to access memory. The new default is
  "kmem" where the address range is assigned to the core-mm via
  add_memory_driver_managed(). This saves typical users from wondering
  why their platform memory is not visible via free(1) and stuck behind
  a device-file. At the same time it allows expert users to deploy
  policy to, for example, get dedicated access to high performance
  memory, or hide low performance memory from general purpose kernel
  allocations. This affects not only CXL, but also systems with
  high-bandwidth-memory that platform-firmware tags with the
  EFI_MEMORY_SP (special purpose) designation.

  Summary:

   - CXL RAM region enumeration: instantiate 'struct cxl_region' objects
     for platform firmware created memory regions

   - CXL RAM region provisioning: complement the existing PMEM region
     creation support with RAM region support

   - "Soft Reservation" policy change: Online (memory hot-add)
     soft-reserved memory (EFI_MEMORY_SP) by default, but still allow
     for setting aside such memory for dedicated access via device-dax.

   - CXL Events and Interrupts: Takeover CXL event handling from
     platform-firmware (ACPI calls this CXL Memory Error Reporting) and
     export CXL Events via Linux Trace Events.

   - Convey CXL _OSC results to drivers: Similar to PCI, let the CXL
     subsystem interrogate the result of CXL _OSC negotiation.

   - Emulate CXL DVSEC Range Registers as "decoders": Allow for
     first-generation devices that pre-date the definition of the CXL
     HDM Decoder Capability to translate the CXL DVSEC Range Registers
     into 'struct cxl_decoder' objects.

   - Set timestamp: Per spec, set the device timestamp in case of
     hotplug, or if platform-firwmare failed to set it.

   - General fixups: linux-next build issues, non-urgent fixes for
     pre-production hardware, unit test fixes, spelling and debug
     message improvements"

* tag 'cxl-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (66 commits)
  dax/kmem: Fix leak of memory-hotplug resources
  cxl/mem: Add kdoc param for event log driver state
  cxl/trace: Add serial number to trace points
  cxl/trace: Add host output to trace points
  cxl/trace: Standardize device information output
  cxl/pci: Remove locked check for dvsec_range_allowed()
  cxl/hdm: Add emulation when HDM decoders are not committed
  cxl/hdm: Create emulated cxl_hdm for devices that do not have HDM decoders
  cxl/hdm: Emulate HDM decoder from DVSEC range registers
  cxl/pci: Refactor cxl_hdm_decode_init()
  cxl/port: Export cxl_dvsec_rr_decode() to cxl_port
  cxl/pci: Break out range register decoding from cxl_hdm_decode_init()
  cxl: add RAS status unmasking for CXL
  cxl: remove unnecessary calling of pci_enable_pcie_error_reporting()
  dax/hmem: build hmem device support as module if possible
  dax: cxl: add CXL_REGION dependency
  cxl: avoid returning uninitialized error code
  cxl/pmem: Fix nvdimm registration races
  cxl/mem: Fix UAPI command comment
  cxl/uapi: Tag commands from cxl_query_cmd()
  ...

Pull Intel Trust Domain Extensions (TDX) updates from Dave Hansen:
 "Other than a minor fixup, the content here is to ensure that TDX
  guests never see virtualization exceptions (#VE's) that might be
  induced by the untrusted VMM.

  This is a highly desirable property. Without it, #VE exception
  handling would fall somewhere between NMIs, machine checks and total
  insanity. With it, #VE handling remains pretty mundane.

  Summary:

   - Fixup comment typo

   - Prevent unexpected #VE's from:
      - Hosts removing perfectly good guest mappings (SEPT_VE_DISABLE)
      - Excessive #VE notifications (NOTIFY_ENABLES) which are delivered
        via a #VE"

* tag 'x86_tdx_for_6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tdx: Do not corrupt frame-pointer in __tdx_hypercall()
  x86/tdx: Disable NOTIFY_ENABLES
  x86/tdx: Relax SEPT_VE_DISABLE check for debug TD
  x86/tdx: Use ReportFatalError to report missing SEPT_VE_DISABLE
  x86/tdx: Expand __tdx_hypercall() to handle more arguments
  x86/tdx: Refactor __tdx_hypercall() to allow pass down more arguments
  x86/tdx: Add more registers to struct tdx_hypercall_args
  x86/tdx: Fix typo in comment in __tdx_hypercall()

Replace the obsolete and ambiguos macro in_irq() with new
macro in_hardirq().
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

	On each context switch we save the FPU registers on stack
of old process and restore FPU registers from the stack of new one.
That allows us to avoid doing that each time we enter/leave the
kernel mode; however, that can get suboptimal in some cases.

	For one thing, we don't need to bother saving anything
for kernel threads.  For another, if between entering and leaving
the kernel a thread gives CPU up more than once, it will do
useless work, saving the same values every time, only to discard
the saved copy as soon as it returns from switch_to().

	Alternative solution:

* move the array we save into from switch_stack to thread_info
* have a (thread-synchronous) flag set when we save them
* have another flag set when they should be restored on return to userland.
* do *NOT* save/restore them in do_switch_stack()/undo_switch_stack().
* restore on the exit to user mode if the restore flag had
been set.  Clear both flags.
* on context switch, entry to fork/clone/vfork, before entry into do_signal()
and on entry into straced syscall save the registers and set the 'saved' flag
unless it had been already set.
* on context switch set the 'restore' flag as well.
* have copy_thread() set both flags for child, so the registers would be
restored once the child returns to userland.
* use the saved data in setup_sigcontext(); have restore_sigcontext() set both flags
and copy from sigframe to save area.
* teach ptrace to look for FPU registers in thread_info instead of
switch_stack.
* teach isolated accesses to FPU registers (rdfpcr, wrfpcr, etc.)
to check the 'saved' flag (under preempt_disable()) and work with the save area
if it's been set; if 'saved' flag is found upon write access, set 'restore' flag
as well.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>

gzip_mark() and gzip_release() are gone; there used to be two
forward declarations of each and the patch removing those suckers
had left one of each behind...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>

Just memcmp() with ELFMAG - that's the normal way to do it in userland
code, which that thing is.  Besides, that has the benefit of actually
building - str_has_prefix() is *NOT* present in <string.h>.

Fixes: 5f14596e "alpha: Replace strncmp with str_has_prefix"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>

Type 3 instruction fault (FPU insn with FPU disabled) is handled
by quietly enabling FPU and returning.  Which is fine, except that
we need to do that both for fault in userland and in the kernel;
the latter *can* legitimately happen - all it takes is this:

.global _start
_start:
	call_pal 0xae
	lda $0, 0
	ldq $0, 0($0)

- call_pal CLRFEN to clear "FPU enabled" flag and arrange for
a signal delivery (SIGSEGV in this case).

Fixed by moving the handling of type 3 into the common part of
do_entIF(), before we check for kernel vs. user mode.

Incidentally, check for kernel mode is unidiomatic; the normal
way to do that is !user_mode(regs).  The difference is that
the open-coded variant treats any of bits 63..3 of regs->ps being
set as "it's user mode" while the normal approach is to check just
the bit 3.  PS is a 4-bit register and regs->ps always will have
bits 63..4 clear, so the open-code variant here is actually equivalent
to !user_mode(regs).  Harder to follow, though...

Reproducer above will crash any box where CLRFEN is not ignored by
PAL (== any actual hardware, AFAICS; PAL used in qemu doesn't
bother implementing that crap).

Cc: stable@vger.kernel.org # all way back...
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>

Use semicolons and braces.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

Signed-off-by: Matt Turner <mattst88@gmail.com>

Pull misc vfs updates from Al Viro:
 "Assorted stuff that didn't fit anywhere else"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  nsfs: repair kernel-doc for ns_match()
  nsfs: add compat ioctl handler
  fs/cramfs: Convert kmap() to kmap_local_data()

Pull ipc namespace update from Al Viro:
 "Rik's patches reducing the amount of synchronize_rcu() triggered by
  ipc namespace destruction.

  I've some pending stuff reducing that on the normal umount side, but
  it's nowhere near ready and Rik's stuff shouldn't be held back due to
  conflicts - I'll just redo the parts of my series that stray into
  ipc/*"

* 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ipc,namespace: batch free ipc_namespace structures
  ipc,namespace: make ipc namespace allocation wait for pending free

Pull alpha updates from Al Viro:
 "FEN (floating-point enable) fault fix deals with a really old oopsable
  braino, the rest is alpha/boot compile fixes and minor cleaning up"

* 'work.alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  alpha/boot/misc: trim unused declarations
  alpha/boot/tools/objstrip: fix the check for ELF header
  alpha/boot: fix the breakage from -isystem series...
  alpha: fix FEN fault handling

Pull sysv updates from Al Viro:
 "Fabio's 'switch to kmap_local_page()' patchset (originally after the
  ext2 counterpart, with a lot of cleaning up done to it; as the matter
  of fact, ext2 side is in need of similar cleanups - calling
  conventions there are bloody awful).

  Plus the equivalents of minix stuff..."

* 'work.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  sysv: fix handling of delete_entry and set_link failures
  fs/sysv: Replace kmap() with kmap_local_page()
  fs/sysv: Use dir_put_page() in sysv_rename()
  fs/sysv: Change the signature of dir_get_page()
  fs/sysv: Use the offset_in_page() helper
  sysv: don't flush page immediately for DIRSYNC directories

Pull minix updates from Al Viro:
 "Assorted fixes - mostly Christoph's"

* 'work.minix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  minix_rename(): minix_delete_entry() might fail
  minix: don't flush page immediately for DIRSYNC directories
  minix: fix error handling in minix_set_link
  minix: fix error handling in minix_delete_entry
  minix: move releasing pages into unlink and rename
  minix: make minix_new_inode() return error as ERR_PTR(-E...)

Pull soundwire updates from Vinod Koul:
 "This is a small update which features a bit of core changes and driver
  updates in Intel and cadence driver.

  Core:

   - sdw_transfer_defer() API change to drop an argument

   - Reset page address rework

   - Export sdw_nwrite_no_pm and sdw_nread_no_pm APIs

  Drivers:

   - Cadence and related intel driver updates for FIFO handling and low
     level msg transfers"

* tag 'soundwire-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: cadence: further simplify low-level xfer_msg_defer() callback
  soundwire: cadence: use directly bus sdw_defer structure
  soundwire: bus: remove sdw_defer argument in sdw_transfer_defer()
  soundwire: stream: use consistent pattern for freeing buffers
  soundwire: bus: Remove unused reset_page_addr() callback
  soundwire: bus: Don't zero page registers after every transaction
  soundwire: bus_type: Avoid lockdep assert in sdw_drv_probe()
  soundwire: stream: Move remaining register accesses over to no_pm
  soundwire: debugfs: Switch to sdw_read_no_pm
  soundwire: Provide build stubs for common functions
  soundwire: bus: export sdw_nwrite_no_pm and sdw_nread_no_pm functions
  soundwire: cadence: remove unused sdw_cdns_master_ops declaration
  soundwire: enable optional clock registers for SoundWire 1.2 devices
  ASoC/soundwire: remove is_sdca boolean property
  soundwire: cadence: Drain the RX FIFO after an IO timeout
  soundwire: cadence: Remove wasted space in response_buf
  soundwire: cadence: Don't overflow the command FIFOs
  soundwire: intel: remove DAI startup/shutdown

Pull phy updates from Vinod Koul:
 "This features a bunch of new device support, a couple of new drivers,
  yaml conversion and updates of a few drivers.

  Core support:

   - New devm_of_phy_optional_get() API with users and conversion

  New hardware support:

   - Mediatek MT7986 phy support

   - Qualcomm SM8550 UFS, PCIe, combo phy support, SM6115 / SM4250 USB3
     phy support, SM6350 combo phy support, SM6125 UFS PHY support amd
     SM8350 & SM8450 combo phy support

   - Qualcomm SNPS eUSB2 eUSB2 repeater drivers

   - Allwinner F1C100s USB PHY support

   - Tegra xusb support for Tegra234

  Updates:

   - Yaml conversion for Qualcomm pcie2 phy and usb-hsic-phy

   - G4 mode support in Qualcomm UFS phy and support for various SoCs

   - Yaml conversion for Meson usb2 phy

   - TI Type C support for usb phy for j721

   - Yaml conversion for Tegra xusb binding"

* tag 'phy-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (106 commits)
  phy: qcom: phy-qcom-snps-eusb2: Add support for eUSB2 repeater
  phy: qcom: Add QCOM SNPS eUSB2 repeater driver
  dt-bindings: phy: qcom,snps-eusb2-phy: Add phys property for the repeater
  dt-bindings: phy: Add qcom,snps-eusb2-repeater schema file
  dt-bindings: phy: amlogic,g12a-usb3-pcie-phy: add missing optional phy-supply property
  phy: rockchip-typec: Fix unsigned comparison with less than zero
  phy: rockchip-typec: fix tcphy_get_mode error case
  phy: qcom: snps-eusb2: Add missing headers
  phy: qcom-qmp-combo: Add support for SM8550
  phy: qcom-qmp: Add v6 DP register offsets
  phy: qcom-qmp: pcs-usb: Add v6 register offsets
  dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp: Document SM8550 compatible
  phy: qcom: Add QCOM SNPS eUSB2 driver
  dt-bindings: phy: Add qcom,snps-eusb2-phy schema file
  phy: qcom-qmp-pcie: Add support for SM8550 g3x2 and g4x2 PCIEs
  phy: qcom-qmp: qserdes-lane-shared: Add v6 register offsets
  phy: qcom-qmp: qserdes-txrx: Add v6.20 register offsets
  phy: qcom-qmp: pcs-pcie: Add v6.20 register offsets
  phy: qcom-qmp: pcs-pcie: Add v6 register offsets
  phy: qcom-qmp: pcs: Add v6.20 register offsets
  ...

Pull dmaengine updates from Vinod Koul:
 "A new driver, couple of device support and binding conversion along
  with bunch of driver updates are the main features of this.

  New hardware support:

   - TI AM62Ax controller support

   - Xilinx xdma driver

   - Qualcomm SM6125, SM8550, QDU1000/QRU1000 GPI controller

  Updates:

   - Runtime pm support for at_xdmac driver

   - IMX sdma binding conversion to yaml and HDMI audio support

   - IMX mxs binding conversion to yaml"

* tag 'dmaengine-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (35 commits)
  dmaengine: idma64: Update bytes_transferred field
  dmaengine: imx-sdma: Set DMA channel to be private
  dmaengine: dw: Move check for paused channel to dwc_get_residue()
  dmaengine: ptdma: check for null desc before calling pt_cmd_callback
  dmaengine: dw-axi-dmac: Do not dereference NULL structure
  dmaengine: idxd: Fix default allowed read buffers value in group
  dmaengine: sf-pdma: pdma_desc memory leak fix
  dmaengine: Simplify dmaenginem_async_device_register() function
  dmaengine: use sysfs_emit() to instead of scnprintf()
  dmaengine: Make an order in struct dma_device definition
  dt-bindings: dma: cleanup examples - indentation, lowercase hex
  dt-bindings: dma: drop unneeded quotes
  dmaengine: xilinx: xdma: Add user logic interrupt support
  dmaengine: xilinx: xdma: Add xilinx xdma driver
  dmaengine: drivers: Use devm_platform_ioremap_resource()
  dmaengine: at_xdmac: remove empty line
  dmaengine: at_xdmac: add runtime pm support
  dmaengine: at_xdmac: align properly function members
  dmaengine: ppc4xx: Convert to use sysfs_emit()/sysfs_emit_at() APIs
  dmaengine: sun6i: Set the maximum segment size
  ...

Pull i2c updates from Wolfram Sang:

 - new drivers for HPE GXP and Loongson 2K/LS7A

 - bigger refactorings for i801 and xiic

 - gpio driver gained ACPI and SDA-write only support

 - the core converted some OF helpers to fwnode helpers

 - usual bunch of driver updates

* tag 'i2c-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (52 commits)
  MAINTAINERS: Add HPE GXP I2C Support
  i2c: Add GXP SoC I2C Controller
  dt-bindings: i2c: Add hpe,gxp-i2c
  i2c: xiic: Remove some dead code
  i2c: xiic: Add SCL frequency configuration support
  i2c: xiic: Update compatible with new IP version
  dt-bindings: i2c: xiic: Add 'xlnx,axi-iic-2.1' to compatible
  i2c: i801: Call i801_check_post() from i801_access()
  i2c: i801: Call i801_check_pre() from i801_access()
  i2c: i801: Centralize configuring block commands in i801_block_transaction
  i2c: i801: Centralize configuring non-block commands in i801_simple_transaction
  i2c: i801: Handle SMBAUXCTL_E32B in i801_block_transaction_by_block only
  i2c: i801: Add i801_simple_transaction(), complementing i801_block_transaction()
  Documentation: i2c: correct spelling
  dt-bindings: i2c: i2c-st: convert to DT schema
  i2c: i801: add helper i801_set_hstadd()
  i2c: i801: make FEATURE_BLOCK_PROC dependent on FEATURE_BLOCK_BUFFER
  i2c: i801: make FEATURE_HOST_NOTIFY dependent on FEATURE_IRQ
  i2c: i801: improve interrupt handler
  i2c: st: use pm_sleep_ptr to avoid ifdef CONFIG_PM_SLEEP
  ...