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When lower fs is a nested overlayfs, calling encode_fh() on a lower
directory dentry may trigger copy up and take sb_writers on the upper fs
of the lower nested overlayfs.
The lower nested overlayfs may have the same upper fs as this overlayfs,
so nested sb_writers lock is illegal.
Move all the callers that encode lower fh to before ovl_want_write().
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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overlayfs file open (ovl_maybe_lookup_lowerdata) and overlay file llseek
take the ovl_inode_lock, without holding upper sb_writers.
In case of nested lower overlay that uses same upper fs as this overlay,
lockdep will warn about (possibly false positive) circular lock
dependency when doing open/llseek of lower ovl file during copy up with
our upper sb_writers held, because the locking ordering seems reverse to
the locking order in ovl_copy_up_start():
- lower ovl_inode_lock
- upper sb_writers
Let the copy up "transaction" keeps an elevated mnt write count on upper
mnt, but leaves taking upper sb_writers to lower level helpers only when
they actually need it. This allows to avoid holding upper sb_writers
during lower file open/llseek and prevents the lockdep warning.
Minimizing the scope of upper sb_writers during copy up is also needed
for fixing another possible deadlocks by a following patch.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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Make the locking order of ovl_inode_lock() strictly between the two
vfs stacked layers, i.e.:
- ovl vfs locks: sb_writers, inode_lock, ...
- ovl_inode_lock
- upper vfs locks: sb_writers, inode_lock, ...
To that effect, move ovl_want_write() into the helpers ovl_nlink_start()
and ovl_copy_up_start which currently take the ovl_inode_lock() after
ovl_want_write().
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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ovl_get_write_access() gets write access to upper mnt without taking
freeze protection on upper sb and ovl_start_write() only takes freeze
protection on upper sb.
These helpers will be used to breakup the large ovl_want_write() scope
during copy up into finer grained freeze protection scopes.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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A simple wrapper for updating ovl inode size/mtime, to conform
with ovl_file_accessed().
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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ovl_copyattr() may be called concurrently from aio completion context
without any lock and that could lead to overlay inode attributes getting
permanently out of sync with real inode attributes.
Use ovl inode spinlock to protect ovl_copyattr().
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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We want to protect concurrent updates of ovl inode size and mtime
(i.e. ovl_copyattr()) from aio completion context.
Punt write aio completion to a workqueue so that we can protect
ovl_copyattr() with a spinlock.
Export sb_init_dio_done_wq(), so that overlayfs can use its own
dio workqueue to punt aio completions.
Suggested-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/8620dfd3-372d-4ae0-aa3f-2fe97dda1bca@kernel.dk/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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If ovl file is opened O_APPEND, the underlying realfile is also
opened O_APPEND, so it makes sense to propagate the IOCB_APPEND flags
on sync writes to realfile, just as we do with aio writes.
Effectively, because sync ovl writes are protected by inode lock,
this change only makes a difference if the realfile is written to (size
extending writes) from underneath overlayfs. The behavior in this case
is undefined, so it is ok if we change the behavior (to fail the ovl
IOCB_APPEND write).
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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Overlayfs implements its own function to translate iocb flags into rw
flags, so that they can be passed into another vfs call.
With commit ce71bfea207b4 ("fs: align IOCB_* flags with RWF_* flags")
Jens created a 1:1 matching between the iocb flags and rw flags,
simplifying the conversion.
Signed-off-by: Alessio Balsini <balsini@android.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Borislav Petkov:
- Make sure the "svm" feature flag is cleared from /proc/cpuinfo when
virtualization support is disabled in the BIOS on AMD and Hygon
platforms
- A minor cleanup
* tag 'x86_cpu_for_6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu/amd: Remove redundant 'break' statement
x86/cpu: Clear SVM feature if disabled by BIOS
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
- Add support for non-contiguous capacity bitmasks being added to
Intel's CAT implementation
- Other improvements to resctrl code: better configuration,
simplifications, debugging support, fixes
* tag 'x86_cache_for_6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/resctrl: Display RMID of resource group
x86/resctrl: Add support for the files of MON groups only
x86/resctrl: Display CLOSID for resource group
x86/resctrl: Introduce "-o debug" mount option
x86/resctrl: Move default group file creation to mount
x86/resctrl: Unwind properly from rdt_enable_ctx()
x86/resctrl: Rename rftype flags for consistency
x86/resctrl: Simplify rftype flag definitions
x86/resctrl: Add multiple tasks to the resctrl group at once
Documentation/x86: Document resctrl's new sparse_masks
x86/resctrl: Add sparse_masks file in info
x86/resctrl: Enable non-contiguous CBMs in Intel CAT
x86/resctrl: Rename arch_has_sparse_bitmaps
x86/resctrl: Fix remaining kernel-doc warnings
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 hw mitigation updates from Borislav Petkov:
- A bunch of improvements, cleanups and fixlets to the SRSO mitigation
machinery and other, general cleanups to the hw mitigations code, by
Josh Poimboeuf
- Improve the return thunk detection by objtool as it is absolutely
important that the default return thunk is not used after returns
have been patched. Future work to detect and report this better is
pending
- Other misc cleanups and fixes
* tag 'x86_bugs_for_6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/retpoline: Document some thunk handling aspects
x86/retpoline: Make sure there are no unconverted return thunks due to KCSAN
x86/callthunks: Delete unused "struct thunk_desc"
x86/vdso: Run objtool on vdso32-setup.o
objtool: Fix return thunk patching in retpolines
x86/srso: Remove unnecessary semicolon
x86/pti: Fix kernel warnings for pti= and nopti cmdline options
x86/calldepth: Rename __x86_return_skl() to call_depth_return_thunk()
x86/nospec: Refactor UNTRAIN_RET[_*]
x86/rethunk: Use SYM_CODE_START[_LOCAL]_NOALIGN macros
x86/srso: Disentangle rethunk-dependent options
x86/srso: Move retbleed IBPB check into existing 'has_microcode' code block
x86/bugs: Remove default case for fully switched enums
x86/srso: Remove 'pred_cmd' label
x86/srso: Unexport untraining functions
x86/srso: Improve i-cache locality for alias mitigation
x86/srso: Fix unret validation dependencies
x86/srso: Fix vulnerability reporting for missing microcode
x86/srso: Print mitigation for retbleed IBPB case
x86/srso: Print actual mitigation if requested mitigation isn't possible
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS updates from Borislav Petkov:
- Specify what error addresses reported on AMD are actually usable
memory error addresses for further decoding
* tag 'ras_core_for_6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Cleanup mce_usable_address()
x86/mce: Define amd_mce_usable_address()
x86/MCE/AMD: Split amd_mce_is_memory_error()
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- A new EDAC driver for Xilinx's Versal integrated memory controller
* tag 'edac_updates_for_v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/versal: Add a Xilinx Versal memory controller driver
dt-bindings: memory-controllers: Add support for Xilinx Versal EDAC for DDRMC
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2023-10-28
1) Remove unused function declarations of xfrm4_extract_input and
xfrm6_extract_input. From Yue Haibing.
2) Annotate struct xfrm_sec_ctx with __counted_by.
From Kees Cook.
3) Support GRO decapsulation for ESP in UDP encapsulation.
From Antony Antony et all.
4) Replace the xfrm session decode with flow dissector.
From Florian Westphal.
5) Fix a use after free in __xfrm6_udp_encap_rcv.
6) Fix the layer 4 flowi decoding.
From Florian Westphal.
* tag 'ipsec-next-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next:
xfrm: policy: fix layer 4 flowi decoding
xfrm Fix use after free in __xfrm6_udp_encap_rcv.
xfrm: policy: replace session decode with flow dissector
xfrm: move mark and oif flowi decode into common code
xfrm: pass struct net to xfrm_decode_session wrappers
xfrm: Support GRO for IPv6 ESP in UDP encapsulation
xfrm: Support GRO for IPv4 ESP in UDP encapsulation
xfrm: Use the XFRM_GRO to indicate a GRO call on input
xfrm: Annotate struct xfrm_sec_ctx with __counted_by
xfrm: Remove unused function declarations
====================
Link: https://lore.kernel.org/r/20231028084328.3119236-1-steffen.klassert@secunet.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The QMC (QUICC mutichannel controller) is a controller present in some
PowerQUICC SoC such as MPC885.
The QMC HDLC uses the QMC controller to transfer HDLC data.
Additionally, a framer can be connected to the QMC HDLC.
If present, this framer is the interface between the TDM bus used by the
QMC HDLC and the E1/T1 line.
The QMC HDLC can use this framer to get information about the E1/T1 line
and configure the E1/T1 line.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231011061437.64213-9-herve.codina@bootlin.com
Signed-off-by: Rob Herring <robh@kernel.org>
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false' in child nodes
Additional properties in child node should not be allowed.
Prevent them adding 'additionalProperties: false'
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231011061437.64213-8-herve.codina@bootlin.com
Signed-off-by: Rob Herring <robh@kernel.org>
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The given example mentions the 'fsl,mode' property whereas the
correct property name, the one described, is 'fsl,operational-mode'.
Fix the example to use the correct property name.
Fixes: a9b121327c93 ("dt-bindings: soc: fsl: cpm_qe: Add QMC controller")
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231011061437.64213-7-herve.codina@bootlin.com
Signed-off-by: Rob Herring <robh@kernel.org>
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* clk-cleanup:
clk: si521xx: Increase stack based print buffer size in probe
clk: Use device_get_match_data()
clk: cdce925: Extend match support for OF tables
clk: si570: Simplify probe
clk: si5351: Simplify probe
clk: rs9: Use i2c_get_match_data() instead of device_get_match_data()
clk: clk-si544: Simplify probe() and is_valid_frequency()
clk: si521xx: Use i2c_get_match_data() instead of device_get_match_data()
clk: npcm7xx: Fix incorrect kfree
clk: at91: remove unnecessary conditions
clk: ti: fix double free in of_ti_divider_clk_setup()
clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
clk: ralink: mtmips: quiet unused variable warning
clk: gate: fix comment typo and grammar
clk: asm9620: Remove 'hw' local variable that isn't checked
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'clk-frac-divider' into clk-next
- Make clk kunit tests work with lockdep
- Fix clk gate kunit test for big-endian
- Convert more than a handful of clk drivers to use regmap maple tree
- Consider the CLK_FRAC_DIVIDER_ZERO_BASED in fractional divider clk
implementation
* clk-renesas: (23 commits)
clk: renesas: r9a08g045: Add clock and reset support for SDHI1 and SDHI2
clk: renesas: rzg2l: Use %x format specifier to print CLK_ON_R()
clk: renesas: Add minimal boot support for RZ/G3S SoC
clk: renesas: rzg2l: Add divider clock for RZ/G3S
clk: renesas: rzg2l: Refactor SD mux driver
clk: renesas: rzg2l: Remove CPG_SDHI_DSEL from generic header
clk: renesas: rzg2l: Add struct clk_hw_data
clk: renesas: rzg2l: Add support for RZ/G3S PLL
clk: renesas: rzg2l: Remove critical area
clk: renesas: rzg2l: Fix computation formula
clk: renesas: rzg2l: Trust value returned by hardware
clk: renesas: rzg2l: Lock around writes to mux register
clk: renesas: rzg2l: Wait for status bit of SD mux before continuing
clk: renesas: rcar-gen3: Extend SDnH divider table
dt-bindings: clock: renesas,rzg2l-cpg: Document RZ/G3S SoC
clk: renesas: r8a7795: Constify r8a7795_*_clks
clk: renesas: r9a06g032: Name anonymous structs
clk: renesas: r9a06g032: Fix kerneldoc warning
clk: renesas: rzg2l: Use u32 for flag and mux_flags
clk: renesas: rzg2l: Use FIELD_GET() for PLL register fields
...
* clk-kunit:
clk: Fix clk gate kunit test on big-endian CPUs
clk: Parameterize clk_leaf_mux_set_rate_parent
clk: Drive clk_leaf_mux_set_rate_parent test from clk_ops
* clk-regmap:
clk: versaclock7: Convert to use maple tree register cache
clk: versaclock5: Convert to use maple tree register cache
clk: versaclock3: Convert to use maple tree register cache
clk: versaclock3: Remove redundant _is_writeable()
clk: si570: Convert to use maple tree register cache
clk: si544: Convert to use maple tree register cache
clk: si5351: Convert to use maple tree register cache
clk: si5341: Convert to use maple tree register cache
clk: si514: Convert to use maple tree register cache
clk: cdce925: Convert to use maple tree register cache
* clk-frac-divider:
clk: fractional-divider: tests: Add test suite for edge cases
clk: fractional-divider: Improve approximation when zero based and export
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and 'clk-qcom' into clk-next
- Add consumer info to clk debugfs
- Fix various clk drivers that have clk_hw_onecell_data not at the end
of an allocation
* clk-debugfs:
clk: Allow phase adjustment from debugfs
clk: Show active consumers of clocks in debugfs
* clk-spreadtrum:
clk: sprd: Composite driver support offset config
* clk-sifive:
clk: sifive: Allow building the driver as a module
clk: analogbits: Allow building the library as a module
* clk-counted:
clk: socfpga: agilex: Add bounds-checking coverage for struct stratix10_clock_data
clk: socfpga: Fix undefined behavior bug in struct stratix10_clock_data
clk: visconti: Add bounds-checking coverage for struct visconti_pll_provider
clk: visconti: Fix undefined behavior bug in struct visconti_pll_provider
* clk-qcom: (36 commits)
clk: qcom: apss-ipq6018: add the GPLL0 clock also as clock provider
clk: qcom: ipq5332: drop the CLK_SET_RATE_PARENT flag from GPLL clocks
clk: qcom: ipq9574: drop the CLK_SET_RATE_PARENT flag from GPLL clocks
clk: qcom: ipq5018: drop the CLK_SET_RATE_PARENT flag from GPLL clocks
clk: qcom: ipq6018: drop the CLK_SET_RATE_PARENT flag from PLL clocks
clk: qcom: ipq8074: drop the CLK_SET_RATE_PARENT flag from PLL clocks
clk: qcom: gcc-ipq6018: add QUP6 I2C clock
clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
clk: qcom: apss-ipq-pll: Fix 'l' value for ipq5332_pll_config
clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
clk: qcom: clk-alpha-pll: introduce stromer plus ops
clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
clk: qcom: videocc-sm8550: switch to clk_lucid_ole_pll_configure
clk: qcom: gpucc-sm8550: switch to clk_lucid_ole_pll_configure
clk: qcom: Replace of_device.h with explicit includes
clk: qcom: smd-rpm: Move CPUSS_GNoC clock to interconnect
clk: qcom: cbf-msm8996: Convert to platform remove callback returning void
clk: qcom: gcc-sm8150: Fix gcc_sdcc2_apps_clk_src
clk: qcom: Add GCC driver support for SM4450
dt-bindings: clock: qcom: Add GCC clocks for SM4450
...
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'clk-imx' into clk-next
- Add clock driver for TWL6032
* clk-doc:
clk: linux/clk-provider.h: fix kernel-doc warnings and typos
* clk-amlogic:
clk: meson: S4: select CONFIG_COMMON_CLK_MESON_CLKC_UTILS
clk: meson: S4: add support for Amlogic S4 SoC peripheral clock controller
clk: meson: S4: add support for Amlogic S4 SoC PLL clock driver
dt-bindings: clock: document Amlogic S4 SoC peripherals clock controller
dt-bindings: clock: document Amlogic S4 SoC PLL clock controller
* clk-mediatek:
clk: mediatek: fix double free in mtk_clk_register_pllfh()
clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6779: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6765: Add check for mtk_alloc_clk_data
* clk-twl:
clk: twl: add clock driver for TWL6032
* clk-imx:
clk: imx: imx8qm/qxp: add more resources to whitelist
clk: imx: scu: ignore clks not owned by Cortex-A partition
clk: imx8: remove MLB support
clk: imx: imx8qm-rsrc: drop VPU_UART/VPUCORE
clk: imx: imx8qxp: correct the enet clocks for i.MX8DXL
clk: imx: imx8qxp: Fix elcdif_pll clock
clk: imx: imx8dxl-rsrc: keep sorted in the ascending order
clk: imx: imx6sx: Allow a different LCDIF1 clock parent
clk: imx: imx8mq: correct error handling path
clk: imx8mp: Remove non-existent IMX8MP_CLK_AUDIOMIX_PDM_ROOT
clk: imx: imx8: Simplify clk_imx_acm_detach_pm_domains()
clk: imx: imx8: Add a message in case of devm_clk_hw_register_mux_parent_data_table() error
clk: imx: imx8: Fix an error handling path in imx8_acm_clk_probe()
clk: imx: imx8: Fix an error handling path if devm_clk_hw_register_mux_parent_data_table() fails
clk: imx: imx8: Fix an error handling path in clk_imx_acm_attach_pm_domains()
clk: imx: Select MXC_CLK for CLK_IMX8QXP
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Pull initial bcachefs updates from Kent Overstreet:
"Here's the bcachefs filesystem pull request.
One new patch since last week: the exportfs constants ended up
conflicting with other filesystems that are also getting added to the
global enum, so switched to new constants picked by Amir.
The only new non fs/bcachefs/ patch is the objtool patch that adds
bcachefs functions to the list of noreturns. The patch that exports
osq_lock() has been dropped for now, per Ingo"
* tag 'bcachefs-2023-10-30' of https://evilpiepirate.org/git/bcachefs: (2781 commits)
exportfs: Change bcachefs fid_type enum to avoid conflicts
bcachefs: Refactor memcpy into direct assignment
bcachefs: Fix drop_alloc_keys()
bcachefs: snapshot_create_lock
bcachefs: Fix snapshot skiplists during snapshot deletion
bcachefs: bch2_sb_field_get() refactoring
bcachefs: KEY_TYPE_error now counts towards i_sectors
bcachefs: Fix handling of unknown bkey types
bcachefs: Switch to unsafe_memcpy() in a few places
bcachefs: Use struct_size()
bcachefs: Correctly initialize new buckets on device resize
bcachefs: Fix another smatch complaint
bcachefs: Use strsep() in split_devs()
bcachefs: Add iops fields to bch_member
bcachefs: Rename bch_sb_field_members -> bch_sb_field_members_v1
bcachefs: New superblock section members_v2
bcachefs: Add new helper to retrieve bch_member from sb
bcachefs: bucket_lock() is now a sleepable lock
bcachefs: fix crc32c checksum merge byte order problem
bcachefs: Fix bch2_inode_delete_keys()
...
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Just as unevaluatedProperties or additionalProperties are required at
the top level of schemas, they should (and will) also be required for
child node schemas. That ensures only documented properties are
present for any node.
Adding additionalProperties constraint on 'trig-conns' nodes results in
warnings that 'cpu' and 'arm,cs-dev-assoc' are not allowed. These are
already defined for the parent node, but need to be duplicated for the
child node. Drop the free form description that the properties also apply
to the child nodes.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Link: https://lore.kernel.org/r/20230925220511.2026514-2-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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'cpu' has been added as a single phandle type to dtschema, so drop the
type here.
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230925220511.2026514-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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The soundwire-controller.yaml schema already defines the form for devices
in child nodes, so there's no need to do the same in the QCom controller
binding. Add a $ref to the soundwire-controller.yaml schema and drop the
child node schema.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231016155537.2973625-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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Patches in Joerg's iommu tree to convert the mock driver to use
domain_alloc_paging() that clash badly with the way the selftest changes
for nesting were structured.
Massage the selftest so that it looks closer the code after the
domain_alloc_paging() conversion to ease the merge. Change
__mock_domain_alloc_paging() into mock_domain_alloc_paging() in the same
way as the iommu tree. The merge resolution then trivially takes both and
deletes mock_domain_alloc().
Link: https://lore.kernel.org/r/0-v1-90a855762c96+19de-mock_merge_jgg@nvidia.com
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Make it explicit that the not yet documented child nodes have additional
properties and the child node schema is not complete.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230926144249.4053202-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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To get the latest fixes in the perf tools including perf stat output,
dlfilter and LLVM feature detection.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"New features:
- raid-stripe-tree
New tree for logical file extent mapping where the physical mapping
may not match on multiple devices. This is now used in zoned mode
to implement RAID0/RAID1* profiles, but can be used in non-zoned
mode as well. The support for RAID56 is in development and will
eventually fix the problems with the current implementation. This
is a backward incompatible feature and has to be enabled at mkfs
time.
- simple quota accounting (squota)
A simplified mode of qgroup that accounts all space on the initial
extent owners (a subvolume), the snapshots are then cheap to create
and delete. The deletion of snapshots in fully accounting qgroups
is a known CPU/IO performance bottleneck.
The squota is not suitable for the general use case but works well
for containers where the original subvolume exists for the whole
time. This is a backward incompatible feature as it needs extending
some structures, but can be enabled on an existing filesystem.
- temporary filesystem fsid (temp_fsid)
The fsid identifies a filesystem and is hard coded in the
structures, which disallows mounting the same fsid found on
different devices.
For a single device filesystem this is not strictly necessary, a
new temporary fsid can be generated on mount e.g. after a device is
cloned. This will be used by Steam Deck for root partition A/B
testing, or can be used for VM root images.
Other user visible changes:
- filesystems with partially finished metadata_uuid conversion cannot
be mounted anymore and the uuid fixup has to be done by btrfs-progs
(btrfstune).
Performance improvements:
- reduce reservations for checksum deletions (with enabled free space
tree by factor of 4), on a sample workload on file with many
extents the deletion time decreased by 12%
- make extent state merges more efficient during insertions, reduce
rb-tree iterations (run time of critical functions reduced by 5%)
Core changes:
- the integrity check functionality has been removed, this was a
debugging feature and removal does not affect other integrity
checks like checksums or tree-checker
- space reservation changes:
- more efficient delayed ref reservations, this avoids building up
too much work or overusing or exhausting the global block
reserve in some situations
- move delayed refs reservation to the transaction start time,
this prevents some ENOSPC corner cases related to exhaustion of
global reserve
- improvements in reducing excessive reservations for block group
items
- adjust overcommit logic in near full situations, account for one
more chunk to eventually allocate metadata chunk, this is mostly
relevant for small filesystems (<10GiB)
- single device filesystems are scanned but not registered (except
seed devices), this allows temp_fsid to work
- qgroup iterations do not need GFP_ATOMIC allocations anymore
- cleanups, refactoring, reduced data structure size, function
parameter simplifications, error handling fixes"
* tag 'for-6.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (156 commits)
btrfs: open code timespec64 in struct btrfs_inode
btrfs: remove redundant log root tree index assignment during log sync
btrfs: remove redundant initialization of variable dirty in btrfs_update_time()
btrfs: sysfs: show temp_fsid feature
btrfs: disable the device add feature for temp-fsid
btrfs: disable the seed feature for temp-fsid
btrfs: update comment for temp-fsid, fsid, and metadata_uuid
btrfs: remove pointless empty log context list check when syncing log
btrfs: update comment for struct btrfs_inode::lock
btrfs: remove pointless barrier from btrfs_sync_file()
btrfs: add and use helpers for reading and writing last_trans_committed
btrfs: add and use helpers for reading and writing fs_info->generation
btrfs: add and use helpers for reading and writing log_transid
btrfs: add and use helpers for reading and writing last_log_commit
btrfs: support cloned-device mount capability
btrfs: add helper function find_fsid_by_disk
btrfs: stop reserving excessive space for block group item insertions
btrfs: stop reserving excessive space for block group item updates
btrfs: reorder btrfs_inode to fill gaps
btrfs: open code btrfs_ordered_inode_tree in btrfs_inode
...
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* kvm-arm64/pmu_pmcr_n:
: User-defined PMC limit, courtesy Raghavendra Rao Ananta
:
: Certain VMMs may want to reserve some PMCs for host use while running a
: KVM guest. This was a bit difficult before, as KVM advertised all
: supported counters to the guest. Userspace can now limit the number of
: advertised PMCs by writing to PMCR_EL0.N, as KVM's sysreg and PMU
: emulation enforce the specified limit for handling guest accesses.
KVM: selftests: aarch64: vPMU test for validating user accesses
KVM: selftests: aarch64: vPMU register test for unimplemented counters
KVM: selftests: aarch64: vPMU register test for implemented counters
KVM: selftests: aarch64: Introduce vpmu_counter_access test
tools: Import arm_pmuv3.h
KVM: arm64: PMU: Allow userspace to limit PMCR_EL0.N for the guest
KVM: arm64: Sanitize PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} before first run
KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}
KVM: arm64: PMU: Set PMCR_EL0.N for vCPU based on the associated PMU
KVM: arm64: PMU: Add a helper to read a vCPU's PMCR_EL0
KVM: arm64: Select default PMU in KVM_ARM_VCPU_INIT handler
KVM: arm64: PMU: Introduce helpers to set the guest's PMU
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Pull fscrypt updates from Eric Biggers:
"This update adds support for configuring the crypto data unit size
(i.e. the granularity of file contents encryption) to be less than the
filesystem block size. This can allow users to use inline encryption
hardware in some cases when it wouldn't otherwise be possible.
In addition, there are two commits that are prerequisites for the
extent-based encryption support that the btrfs folks are working on"
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
fscrypt: track master key presence separately from secret
fscrypt: rename fscrypt_info => fscrypt_inode_info
fscrypt: support crypto data unit size less than filesystem block size
fscrypt: replace get_ino_and_lblk_bits with just has_32bit_inodes
fscrypt: compute max_lblk_bits from s_maxbytes and block size
fscrypt: make the bounce page pool opt-in instead of opt-out
fscrypt: make it clearer that key_prefix is deprecated
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* kvm-arm64/mops:
: KVM support for MOPS, courtesy of Kristina Martsenko
:
: MOPS adds new instructions for accelerating memcpy(), memset(), and
: memmove() operations in hardware. This series brings virtualization
: support for KVM guests, and allows VMs to run on asymmetrict systems
: that may have different MOPS implementations.
KVM: arm64: Expose MOPS instructions to guests
KVM: arm64: Add handler for MOPS exceptions
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/writable-id-regs:
: Writable ID registers, courtesy of Jing Zhang
:
: This series significantly expands the architectural feature set that
: userspace can manipulate via the ID registers. A new ioctl is defined
: that makes the mutable fields in the ID registers discoverable to
: userspace.
KVM: selftests: Avoid using forced target for generating arm64 headers
tools headers arm64: Fix references to top srcdir in Makefile
KVM: arm64: selftests: Test for setting ID register from usersapce
tools headers arm64: Update sysreg.h with kernel sources
KVM: selftests: Generate sysreg-defs.h and add to include path
perf build: Generate arm64's sysreg-defs.h and add to include path
tools: arm64: Add a Makefile for generating sysreg-defs.h
KVM: arm64: Document vCPU feature selection UAPIs
KVM: arm64: Allow userspace to change ID_AA64ZFR0_EL1
KVM: arm64: Allow userspace to change ID_AA64PFR0_EL1
KVM: arm64: Allow userspace to change ID_AA64MMFR{0-2}_EL1
KVM: arm64: Allow userspace to change ID_AA64ISAR{0-2}_EL1
KVM: arm64: Bump up the default KVM sanitised debug version to v8p8
KVM: arm64: Reject attempts to set invalid debug arch version
KVM: arm64: Advertise selected DebugVer in DBGDIDR.Version
KVM: arm64: Use guest ID register values for the sake of emulation
KVM: arm64: Document KVM_ARM_GET_REG_WRITABLE_MASKS
KVM: arm64: Allow userspace to get the writable masks for feature ID registers
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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The 'prepare' target that generates the arm64 sysreg headers had no
prerequisites, so it wound up forcing a rebuild of all KVM selftests
each invocation. Add a rule for the generated headers and just have
dependents use that for a prerequisite.
Reported-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Fixes: 9697d84cc3b6 ("KVM: selftests: Generate sysreg-defs.h and add to include path")
Tested-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Link: https://lore.kernel.org/r/20231027005439.3142015-3-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Aishwarya reports that KVM selftests for arm64 fail with the following
error:
| make[4]: Entering directory '/tmp/kci/linux/tools/testing/selftests/kvm'
| Makefile:270: warning: overriding recipe for target
| '/tmp/kci/linux/build/kselftest/kvm/get-reg-list'
| Makefile:265: warning: ignoring old recipe for target
| '/tmp/kci/linux/build/kselftest/kvm/get-reg-list'
| make -C ../../../../tools/arch/arm64/tools/
| make[5]: Entering directory '/tmp/kci/linux/tools/arch/arm64/tools'
| Makefile:10: ../tools/scripts/Makefile.include: No such file or directory
| make[5]: *** No rule to make target '../tools/scripts/Makefile.include'.
| Stop.
It would appear that this only affects builds from the top-level
Makefile (e.g. make kselftest-all), as $(srctree) is set to ".". Work
around the issue by shadowing the kselftest naming scheme for the source
tree variable.
Reported-by: Aishwarya TCV <aishwarya.tcv@arm.com>
Fixes: 0359c946b131 ("tools headers arm64: Update sysreg.h with kernel sources")
Link: https://lore.kernel.org/r/20231027005439.3142015-2-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/sgi-injection:
: vSGI injection improvements + fixes, courtesy Marc Zyngier
:
: Avoid linearly searching for vSGI targets using a compressed MPIDR to
: index a cache. While at it, fix some egregious bugs in KVM's mishandling
: of vcpuid (user-controlled value) and vcpu_idx.
KVM: arm64: Clarify the ordering requirements for vcpu/RD creation
KVM: arm64: vgic-v3: Optimize affinity-based SGI injection
KVM: arm64: Fast-track kvm_mpidr_to_vcpu() when mpidr_data is available
KVM: arm64: Build MPIDR to vcpu index cache at runtime
KVM: arm64: Simplify kvm_vcpu_get_mpidr_aff()
KVM: arm64: Use vcpu_idx for invalidation tracking
KVM: arm64: vgic: Use vcpu_idx for the debug information
KVM: arm64: vgic-v2: Use cpuid from userspace as vcpu_id
KVM: arm64: vgic-v3: Refactor GICv3 SGI generation
KVM: arm64: vgic-its: Treat the collection target address as a vcpu_id
KVM: arm64: vgic: Make kvm_vgic_inject_irq() take a vcpu pointer
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/stage2-vhe-load:
: Setup stage-2 MMU from vcpu_load() for VHE
:
: Unlike nVHE, there is no need to switch the stage-2 MMU around on guest
: entry/exit in VHE mode as the host is running at EL2. Despite this KVM
: reloads the stage-2 on every guest entry, which is needless.
:
: This series moves the setup of the stage-2 MMU context to vcpu_load()
: when running in VHE mode. This is likely to be a win across the board,
: but also allows us to remove an ISB on the guest entry path for systems
: with one of the speculative AT errata.
KVM: arm64: Move VTCR_EL2 into struct s2_mmu
KVM: arm64: Load the stage-2 MMU context in kvm_vcpu_load_vhe()
KVM: arm64: Rename helpers for VHE vCPU load/put
KVM: arm64: Reload stage-2 for VMID change on VHE
KVM: arm64: Restore the stage-2 context in VHE's __tlb_switch_to_host()
KVM: arm64: Don't zero VTTBR in __tlb_switch_to_host()
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/nv-trap-fixes:
: NV trap forwarding fixes, courtesy Miguel Luis and Marc Zyngier
:
: - Explicitly define the effects of HCR_EL2.NV on EL2 sysregs in the
: NV trap encoding
:
: - Make EL2 registers that access AArch32 guest state UNDEF or RAZ/WI
: where appropriate for NV guests
KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI
KVM: arm64: Do not let a L1 hypervisor access the *32_EL2 sysregs
KVM: arm64: Refine _EL2 system register list that require trap reinjection
arm64: Add missing _EL2 encodings
arm64: Add missing _EL12 encodings
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/smccc-filter-cleanups:
: Cleanup the management of KVM's SMCCC maple tree
:
: Avoid the cost of maintaining the SMCCC filter maple tree if userspace
: hasn't writen a rule to the filter. While at it, rip out the now
: unnecessary VM flag to indicate whether or not the SMCCC filter was
: configured.
KVM: arm64: Use mtree_empty() to determine if SMCCC filter configured
KVM: arm64: Only insert reserved ranges when SMCCC filter is used
KVM: arm64: Add a predicate for testing if SMCCC filter is configured
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/pmevtyper-filter:
: Fixes to KVM's handling of the PMUv3 exception level filtering bits
:
: - NSH (count at EL2) and M (count at EL3) should be stateful when the
: respective EL is advertised in the ID registers but have no effect on
: event counting.
:
: - NSU and NSK modify the event filtering of EL0 and EL1, respectively.
: Though the kernel may not use these bits, other KVM guests might.
: Implement these bits exactly as written in the pseudocode if EL3 is
: advertised.
KVM: arm64: Add PMU event filter bits required if EL3 is implemented
KVM: arm64: Make PMEVTYPER<n>_EL0.NSH RES0 if EL2 isn't advertised
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/feature-flag-refactor:
: vCPU feature flag cleanup
:
: Clean up KVM's handling of vCPU feature flags to get rid of the
: vCPU-scoped bitmaps and remove failure paths from kvm_reset_vcpu().
KVM: arm64: Get rid of vCPU-scoped feature bitmap
KVM: arm64: Remove unused return value from kvm_reset_vcpu()
KVM: arm64: Hoist NV+SVE check into KVM_ARM_VCPU_INIT ioctl handler
KVM: arm64: Prevent NV feature flag on systems w/o nested virt
KVM: arm64: Hoist PAuth checks into KVM_ARM_VCPU_INIT ioctl
KVM: arm64: Hoist SVE check into KVM_ARM_VCPU_INIT ioctl handler
KVM: arm64: Hoist PMUv3 check into KVM_ARM_VCPU_INIT ioctl handler
KVM: arm64: Add generic check for system-supported vCPU features
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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* kvm-arm64/misc:
: Miscellaneous updates
:
: - Put an upper bound on the number of I-cache invalidations by
: cacheline to avoid soft lockups
:
: - Get rid of bogus refererence count transfer for THP mappings
:
: - Do a local TLB invalidation on permission fault race
:
: - Fixes for page_fault_test KVM selftest
:
: - Add a tracepoint for detecting MMIO instructions unsupported by KVM
KVM: arm64: Add tracepoint for MMIO accesses where ISV==0
KVM: arm64: selftest: Perform ISB before reading PAR_EL1
KVM: arm64: selftest: Add the missing .guest_prepare()
KVM: arm64: Always invalidate TLB for stage-2 permission faults
KVM: arm64: Do not transfer page refcount for THP adjustment
KVM: arm64: Avoid soft lockups due to I-cache maintenance
arm64: tlbflush: Rename MAX_TLBI_OPS
KVM: arm64: Don't use kerneldoc comment for arm64_check_features()
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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It is a pretty well known fact that KVM does not support MMIO emulation
without valid instruction syndrome information (ESR_EL2.ISV == 0). The
current kvm_pr_unimpl() is pretty useless, as it contains zero context
to relate the event to a vCPU.
Replace it with a precise tracepoint that dumps the relevant context
so the user can make sense of what the guest is doing.
Acked-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231026205306.3045075-1-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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It looks like a mistake to issue ISB *after* reading PAR_EL1, we should
instead perform it between the AT instruction and the reads of PAR_EL1.
As according to DDI0487J.a IJTYVP,
"When an address translation instruction is executed, explicit
synchronization is required to guarantee the result is visible to
subsequent direct reads of PAR_EL1."
Otherwise all guest_at testcases fail on my box with
==== Test Assertion Failure ====
aarch64/page_fault_test.c:142: par & 1 == 0
pid=1355864 tid=1355864 errno=4 - Interrupted system call
1 0x0000000000402853: vcpu_run_loop at page_fault_test.c:681
2 0x0000000000402cdb: run_test at page_fault_test.c:730
3 0x0000000000403897: for_each_guest_mode at guest_modes.c:100
4 0x00000000004019f3: for_each_test_and_guest_mode at page_fault_test.c:1105
5 (inlined by) main at page_fault_test.c:1131
6 0x0000ffffb153c03b: ?? ??:0
7 0x0000ffffb153c113: ?? ??:0
8 0x0000000000401aaf: _start at ??:?
0x1 != 0x0 (par & 1 != 0)
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231007124043.626-2-yuzenghui@huawei.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Running page_fault_test on a Cortex A72 fails with
Test: ro_memslot_no_syndrome_guest_cas
Testing guest mode: PA-bits:40, VA-bits:48, 4K pages
Testing memory backing src type: anonymous
==== Test Assertion Failure ====
aarch64/page_fault_test.c:117: guest_check_lse()
pid=1944087 tid=1944087 errno=4 - Interrupted system call
1 0x00000000004028b3: vcpu_run_loop at page_fault_test.c:682
2 0x0000000000402d93: run_test at page_fault_test.c:731
3 0x0000000000403957: for_each_guest_mode at guest_modes.c:100
4 0x00000000004019f3: for_each_test_and_guest_mode at page_fault_test.c:1108
5 (inlined by) main at page_fault_test.c:1134
6 0x0000ffff868e503b: ?? ??:0
7 0x0000ffff868e5113: ?? ??:0
8 0x0000000000401aaf: _start at ??:?
guest_check_lse()
because we don't have a guest_prepare stage to check the presence of
FEAT_LSE and skip the related guest_cas testing, and we end-up failing in
GUEST_ASSERT(guest_check_lse()).
Add the missing .guest_prepare() where it's indeed required.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231007124043.626-1-yuzenghui@huawei.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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It is possible for multiple vCPUs to fault on the same IPA and attempt
to resolve the fault. One of the page table walks will actually update
the PTE and the rest will return -EAGAIN per our race detection scheme.
KVM elides the TLB invalidation on the racing threads as the return
value is nonzero.
Before commit a12ab1378a88 ("KVM: arm64: Use local TLBI on permission
relaxation") KVM always used broadcast TLB invalidations when handling
permission faults, which had the convenient property of making the
stage-2 updates visible to all CPUs in the system. However now we do a
local invalidation, and TLBI elision leads to the vCPU thread faulting
again on the stale entry. Remember that the architecture permits the TLB
to cache translations that precipitate a permission fault.
Invalidate the TLB entry responsible for the permission fault if the
stage-2 descriptor has been relaxed, regardless of which thread actually
did the job.
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230922223229.1608155-1-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Pull nfsd updates from Chuck Lever:
"This release completes the SunRPC thread scheduler work that was begun
in v6.6. The scheduler can now find an svc thread to wake in constant
time and without a list walk. Thanks again to Neil Brown for this
overhaul.
Lorenzo Bianconi contributed infrastructure for a netlink-based NFSD
control plane. The long-term plan is to provide the same functionality
as found in /proc/fs/nfsd, plus some interesting additions, and then
migrate the NFSD user space utilities to netlink.
A long series to overhaul NFSD's NFSv4 operation encoding was applied
in this release. The goals are to bring this family of encoding
functions in line with the matching NFSv4 decoding functions and with
the NFSv2 and NFSv3 XDR functions, preparing the way for better memory
safety and maintainability.
A further improvement to NFSD's write delegation support was
contributed by Dai Ngo. This adds a CB_GETATTR callback, enabling the
server to retrieve cached size and mtime data from clients holding
write delegations. If the server can retrieve this information, it
does not have to recall the delegation in some cases.
The usual panoply of bug fixes and minor improvements round out this
release. As always I am grateful to all contributors, reviewers, and
testers"
* tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (127 commits)
svcrdma: Fix tracepoint printk format
svcrdma: Drop connection after an RDMA Read error
NFSD: clean up alloc_init_deleg()
NFSD: Fix frame size warning in svc_export_parse()
NFSD: Rewrite synopsis of nfsd_percpu_counters_init()
nfsd: Clean up errors in nfs3proc.c
nfsd: Clean up errors in nfs4state.c
NFSD: Clean up errors in stats.c
NFSD: simplify error paths in nfsd_svc()
NFSD: Clean up nfsd4_encode_seek()
NFSD: Clean up nfsd4_encode_offset_status()
NFSD: Clean up nfsd4_encode_copy_notify()
NFSD: Clean up nfsd4_encode_copy()
NFSD: Clean up nfsd4_encode_test_stateid()
NFSD: Clean up nfsd4_encode_exchange_id()
NFSD: Clean up nfsd4_do_encode_secinfo()
NFSD: Clean up nfsd4_encode_access()
NFSD: Clean up nfsd4_encode_readdir()
NFSD: Clean up nfsd4_encode_entry4()
NFSD: Add an nfsd4_encode_nfs_cookie4() helper
...
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Every DT property needs a type defined, but "i2c-alias" is missing any
type definition. It's a "uint32", so add a type reference.
Fixes: 313e8b32c616 ("media: dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231020170225.3632933-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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Convert the bindings for the keypad subdevices of Qualcomm PM8921 and
PM8058 PMICs from text to YAML format.
While doing the conversion also drop the linux,keypad-no-autorepeat
The property was never used by DT files. Both input and DT binding
maintainers consider that bindings should switch to assertive
(linux,autorepeat) instead of negating (no-autorepeat) property.
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230928110309.1212221-2-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
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