To simplify with maintenance let's move the Arm SCMI power-domain driver
to the new pmdomain directory.
Link: https://lore.kernel.org/all/20230921113328.3208651-1-sudeep.holla@arm.com
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
To enable support for performance scaling (DVFS) for generic devices with
the SCMI performance protocol, let's add an SCMI performance domain. This
is being modelled as a genpd provider, with support for performance scaling
through genpd's ->set_performance_state() callback.
Note that, this adds the initial support that allows consumer drivers for
attached devices, to vote for a new performance state via calling the
dev_pm_genpd_set_performance_state(). However, this should be avoided as
it's in most cases preferred to use the OPP library to vote for a new OPP
instead. The support using the OPP library isn't part of this change, but
needs to be implemented from subsequent changes.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230919121605.7304-1-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
In some cases the OPP tables aren't specified in device tree, but rather
encoded in the FW. To allow a genpd provider to specify them dynamically
instead, let's add a new genpd flag, GENPD_FLAG_OPP_TABLE_FW.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-13-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
The performance domain-id can be described in DT using the power-domains
property or the clock property. The latter is already supported, so let's
add support for the power-domains too.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-12-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
The power-domains bindings has in many years been used to describe so
called performance-domains too. Rather than using a separate binding it has
been convenient to re-use the power-domain bindings, as in some cases it's
in fact a combination of the both that would be the best description.
Therefore, let's make it more clear that the power-domains bindings can be
used to describe a performance-domain too.
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230825112633.236607-11-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
The protocol@13 node is describing the performance scaling option for the
ARM SCMI interface, as a clock provider. This is unnecessary limiting, as
performance scaling is in many cases not limited to switching a clock's
frequency.
Therefore, let's extend the binding so the interface can be modelled as a
generic performance domain too. The common way to describe this, is to use
the power-domain DT bindings, so let's use that.
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230825112633.236607-10-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
When an CPU's performance domain is managed through the SCMI firmware,
let's enable us describe this as a consumer of a power-domain provider,
which is the de-facto standard to use for performance domains. In this
case, let's specify a corresponding power-domain-name, to point out the
corresponding index for it.
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230825112633.236607-9-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
The domain-id for the cpu_dev has already been parsed at the point when
scmi_get_sharing_cpus() is getting called. Let's pass it as an in-parameter
to avoid the unnecessary OF parsing.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-7-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
There are no longer any users of the ->device_domain_id() ops in the
scmi_perf_proto_ops, therefore let's remove it.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-6-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Most scmi_perf_proto_ops are already using an "u32 domain" as an
in-parameter to indicate what performance domain we shall operate upon.
However, some of the ops are using a "struct device *dev", which means that
an additional OF parsing is needed each time the perf ops gets called, to
find the corresponding domain-id.
To avoid the above, but also to make the code more consistent, let's
replace the in-parameter "struct device *dev" with an "u32 domain". Note
that, this requires us to make some corresponding changes to the scmi
cpufreq driver, so let's do that too.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-5-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
The OF parsing of the clock domain specifier seems to better belong in the
scmi cpufreq driver, rather than being implemented behind the generic
->device_domain_id() perf protocol ops.
To prepare to remove the ->device_domain_id() ops, let's implement the OF
parsing in the scmi cpufreq driver instead.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-4-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Similar to other protocol ops, it's useful for an scmi module driver to get
some generic information of a performance domain. Therefore, let's add a
new callback to provide this information. The information is currently
limited to the name of the performance domain and whether the set-level
operation is supported, although this can easily be extended if we find the
need for it.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-3-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Similar to other protocol ops, it's useful for an scmi module driver to get
the number of supported performance domains, hence let's make this
available by adding a new perf protocol callback. Note that, a user is
being added from subsequent changes.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-2-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Expose a couple of new SCMI clock operations to get and set OEM specific
clock configurations when talking to an SCMI v3.2 compliant.
Issuing such requests against an SCMI platform server not supporting v3.2
extension for OEM specific clock configurations will fail.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20230826125308.462328-7-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Add support for .is_enabled atomic clk_ops using the related SCMI clock
operation in atomic mode, if available.
Note that the .is_enabled callback will be supported by this SCMI clock
driver only if the configured underlying SCMI transport does support atomic
operations.
CC: Michael Turquette <mturquette@baylibre.com>
CC: Stephen Boyd <sboyd@kernel.org>
CC: linux-clk@vger.kernel.org
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20230826125308.462328-6-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Support clock .state_get operation against SCMI platform servers that do
not support v3.2 CONFIG_GET dedicated command: while talking with these
platforms the command CLOCK_ATTRIBUTES can be used to gather the current
clock states.
Note that, in case of shared resources, the retrieved clock state 'flavour'
(virtual vs physical) depends on the backend SCMI platform server specific
kind of implementation.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20230826125308.462328-5-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Add support for v3.2 clock CONFIG_GET command and related new clock
protocol operation state_get() to retrieve the status of a clock.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20230826125308.462328-4-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
SCMI v3.2 introduces a new clock CONFIG_SET message format that can
optionally carry also OEM specific configuration values beside the usual
clock enable/disable requests.
Refactor internal helpers and add support to use such new format when
talking to a v3.2 compliant SCMI platform.
Support existing enable/disable operations across different clock protocol
versions: this patch still does not add protocol operations to support the
new OEM specific optional configuration capabilities.
No functional change for the SCMI drivers users of the related enable and
disable clock operations.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20230826125308.462328-3-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
SCMI clock enable/disable operations come in 2 different flavours which
simply just differ in how the underlying SCMI transactions is carried on:
atomic or not.
Currently we expose such SCMI operations through 2 distinctly named
wrappers, that, in turn, are wrapped into another couple of similarly and
distinctly named callbacks inside SCMI clock driver user.
Reduce the churn of duplicated wrappers by adding a param to SCMI clock
enable/disable operations to ask for atomic operation while removing the
_atomic version of such operations.
No functional change.
CC: Michael Turquette <mturquette@baylibre.com>
CC: Stephen Boyd <sboyd@kernel.org>
CC: linux-clk@vger.kernel.org
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20230826125308.462328-2-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
- Fix an UV boot crash,
- Skip spurious ENDBR generation on _THIS_IP_,
- Fix ENDBR use in putuser() asm methods,
- Fix corner case boot crashes on 5-level paging,
- and fix a false positive WARNING on LTO kernels.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- Fix an UV boot crash
- Skip spurious ENDBR generation on _THIS_IP_
- Fix ENDBR use in putuser() asm methods
- Fix corner case boot crashes on 5-level paging
- and fix a false positive WARNING on LTO kernels"
* tag 'x86-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/purgatory: Remove LTO flags
x86/boot/compressed: Reserve more memory for page tables
x86/ibt: Avoid duplicate ENDBR in __put_user_nocheck*()
x86/ibt: Suppress spurious ENDBR
x86/platform/uv: Use alternate source for socket to node data
balancing bug, and a topology setup bug on (Intel) hybrid processors.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Fix a performance regression on large SMT systems, an Intel SMT4
balancing bug, and a topology setup bug on (Intel) hybrid processors"
* tag 'sched-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sched: Restore the SD_ASYM_PACKING flag in the DIE domain
sched/fair: Fix SMT4 group_smt_balance handling
sched/fair: Optimize should_we_balance() for large SMT systems
The choose_32_64() macros were added to deal with an odd inconsistency
between the 32-bit and 64-bit layout of 'struct stat' way back when in
commit a52dd971f9 ("vfs: de-crapify "cp_new_stat()" function").
Then a decade later Mikulas noticed that said inconsistency had been a
mistake in the early x86-64 port, and shouldn't have existed in the
first place. So commit 932aba1e16 ("stat: fix inconsistency between
struct stat and struct compat_stat") removed the uses of the helpers.
But the helpers remained around, unused.
Get rid of them.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag '6.6-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Three small SMB3 client fixes, one to improve a null check and two
minor cleanups"
* tag '6.6-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb3: fix some minor typos and repeated words
smb3: correct places where ENOTSUPP is used instead of preferred EOPNOTSUPP
smb3: move server check earlier when setting channel sequence number
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Merge tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Regression and bug fixes for ext4"
* tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix rec_len verify error
ext4: do not let fstrim block system suspend
ext4: move setting of trimmed bit into ext4_try_to_trim_range()
jbd2: Fix memory leak in journal_init_common()
jbd2: Remove page size assumptions
buffer: Make bh_offset() work for compound pages
-flto* implies -ffunction-sections. With LTO enabled, ld.lld generates
multiple .text sections for purgatory.ro:
$ readelf -S purgatory.ro | grep " .text"
[ 1] .text PROGBITS 0000000000000000 00000040
[ 7] .text.purgatory PROGBITS 0000000000000000 000020e0
[ 9] .text.warn PROGBITS 0000000000000000 000021c0
[13] .text.sha256_upda PROGBITS 0000000000000000 000022f0
[15] .text.sha224_upda PROGBITS 0000000000000000 00002be0
[17] .text.sha256_fina PROGBITS 0000000000000000 00002bf0
[19] .text.sha224_fina PROGBITS 0000000000000000 00002cc0
This causes WARNING from kexec_purgatory_setup_sechdrs():
WARNING: CPU: 26 PID: 110894 at kernel/kexec_file.c:919
kexec_load_purgatory+0x37f/0x390
Fix this by disabling LTO for purgatory.
[ AFAICT, x86 is the only arch that supports LTO and purgatory. ]
We could also fix this with an explicit linker script to rejoin .text.*
sections back into .text. However, given the benefit of LTOing purgatory
is small, simply disable the production of more .text.* sections for now.
Fixes: b33fff07e3 ("x86, build: allow LTO to be selected")
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20230914170138.995606-1-song@kernel.org
The decompressor has a hard limit on the number of page tables it can
allocate. This limit is defined at compile-time and will cause boot
failure if it is reached.
The kernel is very strict and calculates the limit precisely for the
worst-case scenario based on the current configuration. However, it is
easy to forget to adjust the limit when a new use-case arises. The
worst-case scenario is rarely encountered during sanity checks.
In the case of enabling 5-level paging, a use-case was overlooked. The
limit needs to be increased by one to accommodate the additional level.
This oversight went unnoticed until Aaron attempted to run the kernel
via kexec with 5-level paging and unaccepted memory enabled.
Update wost-case calculations to include 5-level paging.
To address this issue, let's allocate some extra space for page tables.
128K should be sufficient for any use-case. The logic can be simplified
by using a single value for all kernel configurations.
[ Also add a warning, should this memory run low - by Dave Hansen. ]
Fixes: 34bbb0009f ("x86/boot/compressed: Enable 5-level paging during decompression stage")
Reported-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230915070221.10266-1-kirill.shutemov@linux.intel.com
- Fix kernel-devel RPM and linux-headers Deb package
- Fix too long argument list error in 'make modules_install'
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Merge tag 'kbuild-fixes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix kernel-devel RPM and linux-headers Deb package
- Fix too long argument list error in 'make modules_install'
* tag 'kbuild-fixes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: avoid long argument lists in make modules_install
kbuild: fix kernel-devel RPM package and linux-headers Deb package
Commit 408579cd62 ("mm: Update do_vmi_align_munmap() return
semantics") seems to have updated one of the callers of do_vmi_munmap()
incorrectly: it used to check for the error case (which didn't
change: negative means error).
That commit changed the check to the success case (which did change:
before that commit, 0 was success, and 1 was "success and lock
downgraded". After the change, it's always 0 for success, and the lock
will have been released if requested).
This didn't change any actual VM behavior _except_ for memory accounting
when 'VM_ACCOUNT' was set on the vma. Which made the wrong return value
test fairly subtle, since everything continues to work.
Or rather - it continues to work but the "Committed memory" accounting
goes all wonky (Committed_AS value in /proc/meminfo), and depending on
settings that then causes problems much much later as the VM relies on
bogus statistics for its heuristics.
Revert that one line of the change back to the original logic.
Fixes: 408579cd62 ("mm: Update do_vmi_align_munmap() return semantics")
Reported-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Reported-bisected-and-tested-by: Michael Labiuk <michael.labiuk@virtuozzo.com>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Link: https://lore.kernel.org/all/1694366957@msgid.manchmal.in-ulm.de/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 small(ish) fixes all in drivers. The major fixes are in pm8001
(fixes MSI-X issue going back to its origin), the qla2xxx endianness
fix, which fixes a bug on big endian and the lpfc ones which can cause
an oops on module removal without them.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"16 small(ish) fixes all in drivers.
The major fixes are in pm8001 (fixes MSI-X issue going back to its
origin), the qla2xxx endianness fix, which fixes a bug on big endian
and the lpfc ones which can cause an oops on module removal without
them"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: Prevent use-after-free during rmmod with mapped NVMe rports
scsi: lpfc: Early return after marking final NLP_DROPPED flag in dev_loss_tmo
scsi: lpfc: Fix the NULL vs IS_ERR() bug for debugfs_create_file()
scsi: target: core: Fix target_cmd_counter leak
scsi: pm8001: Setup IRQs on resume
scsi: pm80xx: Avoid leaking tags when processing OPC_INB_SET_CONTROLLER_CONFIG command
scsi: pm80xx: Use phy-specific SAS address when sending PHY_START command
scsi: ufs: core: Poll HCS.UCRDY before issuing a UIC command
scsi: ufs: core: Move __ufshcd_send_uic_cmd() outside host_lock
scsi: qedf: Add synchronization between I/O completions and abort
scsi: target: Replace strlcpy() with strscpy()
scsi: qla2xxx: Fix NULL vs IS_ERR() bug for debugfs_create_dir()
scsi: qla2xxx: Use raw_smp_processor_id() instead of smp_processor_id()
scsi: qla2xxx: Correct endianness for rqstlen and rsplen
scsi: ppa: Fix accidentally reversed conditions for 16-bit and 32-bit EPP
scsi: megaraid_sas: Fix deadlock on firmware crashdump
- Fix link power management transitions to disallow unsupported
states (Niklas).
- A small string handling fix for the sata_mv driver (Christophe).
- Clear port pending interrupts before reset, as per AHCI
specifications (Szuying). Followup fixes for this one are to not
clear ATA_PFLAG_EH_PENDING in ata_eh_reset() to allow EH to
continue on with other actions recorded with error interrupts
triggered before EH completes. A~Nd an additional fix to avoid
thawing a port twice in EH (Niklas).
- Small code style fixes in the pata_parport driver to silence the
build bot as it keeps complaining about bad indentation (me).
- A fix for the recent CDL code to avoid fetching sense data for
successful commands when not necessary for correct operation
(Niklas).
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Merge tag 'ata-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata fixes from Damien Le Moal:
- Fix link power management transitions to disallow unsupported states
(Niklas)
- A small string handling fix for the sata_mv driver (Christophe)
- Clear port pending interrupts before reset, as per AHCI
specifications (Szuying).
Followup fixes for this one are to not clear ATA_PFLAG_EH_PENDING in
ata_eh_reset() to allow EH to continue on with other actions recorded
with error interrupts triggered before EH completes. And an
additional fix to avoid thawing a port twice in EH (Niklas)
- Small code style fixes in the pata_parport driver to silence the
build bot as it keeps complaining about bad indentation (me)
- A fix for the recent CDL code to avoid fetching sense data for
successful commands when not necessary for correct operation (Niklas)
* tag 'ata-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: libata-core: fetch sense data for successful commands iff CDL enabled
ata: libata-eh: do not thaw the port twice in ata_eh_reset()
ata: libata-eh: do not clear ATA_PFLAG_EH_PENDING in ata_eh_reset()
ata: pata_parport: Fix code style issues
ata: libahci: clear pending interrupt status
ata: sata_mv: Fix incorrect string length computation in mv_dump_mem()
ata: libata: disallow dev-initiated LPM transitions to unsupported states
Here is a single USB fix for a much-reported regression for 6.6-rc1.
It resolves a crash in the typec debugfs code for many systems. It's
been in linux-next with no reported issues, and many people have
reported it resolving their problem with 6.6-rc1.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH:
"Here is a single USB fix for a much-reported regression for 6.6-rc1.
It resolves a crash in the typec debugfs code for many systems. It's
been in linux-next with no reported issues, and many people have
reported it resolving their problem with 6.6-rc1"
* tag 'usb-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: Fix NULL pointer dereference
Here is a single driver core fix for a much-reported-by-sysbot issue
that showed up in 6.6-rc1. It's been submitted by many people, all in
the same way, so it obviously fixes things for them all.
Also in here is a single documentation update adding riscv to the
embargoed hardware document in case there are any future issues with
that processor family.
Both of these have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here is a single driver core fix for a much-reported-by-sysbot issue
that showed up in 6.6-rc1. It's been submitted by many people, all in
the same way, so it obviously fixes things for them all.
Also in here is a single documentation update adding riscv to the
embargoed hardware document in case there are any future issues with
that processor family.
Both of these have been in linux-next with no reported problems"
* tag 'driver-core-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation: embargoed-hardware-issues.rst: Add myself for RISC-V
driver core: return an error when dev_set_name() hasn't happened
Here is a single patch for 6.6-rc2 that reverts a 6.5 change for the
comedi subsystem that has ended up being incorrect and caused drivers
that were working for people to be unable to be able to be selected to
build at all. To fix this, the Kconfig change needs to be reverted and
a future set of fixes for the ioport dependancies will show up in
6.7-rc1 (there's no rush for them.)
This has been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fix from Greg KH:
"Here is a single patch for 6.6-rc2 that reverts a 6.5 change for the
comedi subsystem that has ended up being incorrect and caused drivers
that were working for people to be unable to be able to be selected to
build at all.
To fix this, the Kconfig change needs to be reverted and a future set
of fixes for the ioport dependancies will show up in 6.7-rc1 (there's
no rush for them.)
This has been in linux-next with no reported issues"
* tag 'char-misc-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Revert "comedi: add HAS_IOPORT dependencies"
are converted now. Thanks Uwe, this marks the end of a long conversion
process. Other than that, we have a few Kconfig updates and driver
bugfixes.
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Merge tag 'i2c-for-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"The main thing is the removal of 'probe_new' because all i2c client
drivers are converted now. Thanks Uwe, this marks the end of a long
conversion process.
Other than that, we have a few Kconfig updates and driver bugfixes"
* tag 'i2c-for-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: cadence: Fix the kernel-doc warnings
i2c: aspeed: Reset the i2c controller when timeout occurs
i2c: I2C_MLXCPLD on ARM64 should depend on ACPI
i2c: Make I2C_ATR invisible
i2c: Drop legacy callback .probe_new()
w1: ds2482: Switch back to use struct i2c_driver's .probe()
Currently, we fetch sense data for a _successful_ command if either:
1) Command was NCQ and ATA_DFLAG_CDL_ENABLED flag set (flag
ATA_DFLAG_CDL_ENABLED will only be set if the Successful NCQ command
sense data supported bit is set); or
2) Command was non-NCQ and regular sense data reporting is enabled.
This means that case 2) will trigger for a non-NCQ command which has
ATA_SENSE bit set, regardless if CDL is enabled or not.
This decision was by design. If the device reports that it has sense data
available, it makes sense to fetch that sense data, since the sk/asc/ascq
could be important information regardless if CDL is enabled or not.
However, the fetching of sense data for a successful command is done via
ATA EH. Considering how intricate the ATA EH is, we really do not want to
invoke ATA EH unless absolutely needed.
Before commit 18bd7718b5 ("scsi: ata: libata: Handle completion of CDL
commands using policy 0xD") we never fetched sense data for successful
commands.
In order to not invoke the ATA EH unless absolutely necessary, even if the
device claims support for sense data reporting, only fetch sense data for
successful (NCQ and non-NCQ commands) commands that are using CDL.
[Damien] Modified the check to test the qc flag ATA_QCFLAG_HAS_CDL
instead of the device support for CDL, which is implied for commands
using CDL.
Fixes: 3ac873c76d ("ata: libata-core: fix when to fetch sense data for successful commands")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
commit 1e641060c4 ("libata: clear eh_info on reset completion") added
a workaround that broke the retry mechanism in ATA EH.
Tejun himself suggested to remove this workaround when it was identified
to cause additional problems:
https://lore.kernel.org/linux-ide/20110426135027.GI878@htj.dyndns.org/
He even said:
"Hmm... it seems I wasn't thinking straight when I added that work around."
https://lore.kernel.org/linux-ide/20110426155229.GM878@htj.dyndns.org/
While removing the workaround solved the issue, however, the workaround was
kept to avoid "spurious hotplug events during reset", and instead another
workaround was added on top of the existing workaround in commit
8c56cacc72 ("libata: fix unexpectedly frozen port after ata_eh_reset()").
Because these IRQs happened when the port was frozen, we know that they
were actually a side effect of PxIS and IS.IPS(x) not being cleared before
the COMRESET. This is now done in commit 94152042eaa9 ("ata: libahci: clear
pending interrupt status"), so these workarounds can now be removed.
Since commit 1e641060c4 ("libata: clear eh_info on reset completion") has
now been reverted, the ATA EH retry mechanism is functional again, so there
is once again no need to thaw the port more than once in ata_eh_reset().
This reverts "the workaround on top of the workaround" introduced in commit
8c56cacc72 ("libata: fix unexpectedly frozen port after ata_eh_reset()").
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
ata_scsi_port_error_handler() starts off by clearing ATA_PFLAG_EH_PENDING,
before calling ap->ops->error_handler() (without holding the ap->lock).
If an error IRQ is received while ap->ops->error_handler() is running,
the irq handler will set ATA_PFLAG_EH_PENDING.
Once ap->ops->error_handler() returns, ata_scsi_port_error_handler()
checks if ATA_PFLAG_EH_PENDING is set, and if it is, another iteration
of ATA EH is performed.
The problem is that ATA_PFLAG_EH_PENDING is not only cleared by
ata_scsi_port_error_handler(), it is also cleared by ata_eh_reset().
ata_eh_reset() is called by ap->ops->error_handler(). This additional
clearing done by ata_eh_reset() breaks the whole retry logic in
ata_scsi_port_error_handler(). Thus, if an error IRQ is received while
ap->ops->error_handler() is running, the port will currently remain
frozen and will never get re-enabled.
The additional clearing in ata_eh_reset() was introduced in commit
1e641060c4 ("libata: clear eh_info on reset completion").
Looking at the original error report:
https://marc.info/?l=linux-ide&m=124765325828495&w=2
We can see the following happening:
[ 1.074659] ata3: XXX port freeze
[ 1.074700] ata3: XXX hardresetting link, stopping engine
[ 1.074746] ata3: XXX flipping SControl
[ 1.411471] ata3: XXX irq_stat=400040 CONN|PHY
[ 1.411475] ata3: XXX port freeze
[ 1.420049] ata3: XXX starting engine
[ 1.420096] ata3: XXX rc=0, class=1
[ 1.420142] ata3: XXX clearing IRQs for thawing
[ 1.420188] ata3: XXX port thawed
[ 1.420234] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
We are not supposed to be able to receive an error IRQ while the port is
frozen (PxIE is set to 0, i.e. all IRQs for the port are disabled).
AHCI 1.3.1 section 10.7.1.1 First Tier (IS Register) states:
"Each bit location can be thought of as reporting a '1' if the virtual
"interrupt line" for that port is indicating it wishes to generate an
interrupt. That is, if a port has one or more interrupt status bit set,
and the enables for those status bits are set, then this bit shall be set."
Additionally, AHCI state P:ComInit clearly shows that the state machine
will only jump to P:ComInitSetIS (which sets IS.IPS(x) to '1'), if PxIE.PCE
is set to '1'. In our case, PxIE is set to 0, so IS.IPS(x) won't get set.
So IS.IPS(x) only gets set if PxIS and PxIE is set.
AHCI 1.3.1 section 10.7.1.1 First Tier (IS Register) also states:
"The bits in this register are read/write clear. It is set by the level of
the virtual interrupt line being a set, and cleared by a write of '1' from
the software."
So if IS.IPS(x) is set, you need to explicitly clear it by writing a 1 to
IS.IPS(x) for that port.
Since PxIE is cleared, the only way to get an interrupt while the port is
frozen, is if IS.IPS(x) is set, and the only way IS.IPS(x) can be set when
the port is frozen, is if it was set before the port was frozen.
However, since commit 737dd811a3 ("ata: libahci: clear pending interrupt
status"), we clear both PxIS and IS.IPS(x) after freezing the port, but
before the COMRESET, so the problem that commit 1e641060c4 ("libata:
clear eh_info on reset completion") fixed can no longer happen.
Thus, revert commit 1e641060c4 ("libata: clear eh_info on reset
completion"), so that the retry logic in ata_scsi_port_error_handler()
works once again. (The retry logic is still needed, since we can still
get an error IRQ _after_ the port has been thawed, but before
ata_scsi_port_error_handler() takes the ap->lock in order to check
if ATA_PFLAG_EH_PENDING is set.)
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
This kselftest fixes update for Linux 6.6-rc2 consists of important
fixes to user_events test and ftrace test.
user_events test has been enabled for default run in Linux 6.6-rc1. The
following fixes are for bugs found since then:
- adds checks for dependencies and skips the test. user_events test
requires root access, and tracefs and user_events enabled. It leaves
tracefs mounted and a fix is in progress for that missing piece.
- creates user_events test-specific Kconfig fragments.
ftrace test fixes:
- unmounts tracefs for recovering environment. Fix identified during the
above mentioned user_events dependencies fix.
- adds softlink to latest log directory improving usage.
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Merge tag 'linux-kselftest-fixes-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull more kselftest fixes from Shuah Khan
"Fixes to user_events test and ftrace test.
The user_events test was enabled by default in Linux 6.6-rc1. The
following fixes are for bugs found since then:
- add checks for dependencies and skip the test if they aren't met.
The user_events test requires root access, and tracefs and
user_events enabled. It leaves tracefs mounted and a fix is in
progress for that missing piece.
- create user_events test-specific Kconfig fragments
ftrace test fixes:
- unmount tracefs for recovering environment. Fix identified during
the above mentioned user_events dependencies fix.
- adds softlink to latest log directory improving usage"
* tag 'linux-kselftest-fixes-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: tracing: Fix to unmount tracefs for recovering environment
selftests: user_events: create test-specific Kconfig fragments
ftrace/selftests: Add softlink to latest log directory
selftests/user_events: Fix failures when user_events is not installed
- Use correct order when encoding NFSv4 RENAME change_info
- Fix a potential oops during NFSD shutdown
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Merge tag 'nfsd-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
- Use correct order when encoding NFSv4 RENAME change_info
- Fix a potential oops during NFSD shutdown
* tag 'nfsd-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
NFSD: fix possible oops when nfsd/pool_stats is closed.
nfsd: fix change_info in NFSv4 RENAME replies
Fix the handling of block devices in the test_resume mode of
hibernation (Chen Yu).
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Merge tag 'pm-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Fix the handling of block devices in the test_resume mode of
hibernation (Chen Yu)"
* tag 'pm-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Fix the exclusive get block device in test_resume mode
PM: hibernate: Rename function parameter from snapshot_test to exclusive
- Unbreak disabled trip point check in handle_thermal_trip() that may
cause it to skip enabled trip points (Rafael Wysocki).
- Add missing of_node_put() to of_find_trip_id() and
thermal_of_for_each_cooling_maps() that each break out of a
for_each_child_of_node() loop without dropping the reference to
the child object (Julia Lawall).
- Constify the recently added trip argument of the .get_trend() thermal
zone callback (Rafael Wysocki).
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Merge tag 'thermal-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These fix a thermal core breakage introduced by one of the recent
changes, amend those changes by adding 'const' to a new callback
argument and fix two memory leaks.
Specifics:
- Unbreak disabled trip point check in handle_thermal_trip() that may
cause it to skip enabled trip points (Rafael Wysocki)
- Add missing of_node_put() to of_find_trip_id() and
thermal_of_for_each_cooling_maps() that each break out of a
for_each_child_of_node() loop without dropping the reference to the
child object (Julia Lawall)
- Constify the recently added trip argument of the .get_trend()
thermal zone callback (Rafael Wysocki)"
* tag 'thermal-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: core: Fix disabled trip point check in handle_thermal_trip()
thermal: Constify the trip argument of the .get_trend() zone callback
thermal/of: add missing of_node_put()
table's list of devices that is managed using dm_{get,put}_device.
- Revert DM core's half-baked RCU optimization if IO submitter has set
REQ_NOWAIT. Can be revisited, and properly justified, after
comprehensively auditing all of DM to also pass GFP_NOWAIT for any
allocations if REQ_NOWAIT used.
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Merge tag 'for-6.6/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix DM core retrieve_deps() UAF race due to missing locking of a DM
table's list of devices that is managed using dm_{get,put}_device.
- Revert DM core's half-baked RCU optimization if IO submitter has set
REQ_NOWAIT. Can be revisited, and properly justified, after
comprehensively auditing all of DM to also pass GFP_NOWAIT for any
allocations if REQ_NOWAIT used.
* tag 'for-6.6/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: don't attempt to queue IO under RCU protection
dm: fix a race condition in retrieve_deps
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Merge tag 'block-6.6-2023-09-15' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull via Keith:
- nvme-tcp iov len fix (Varun)
- nvme-hwmon const qualifier for safety (Krzysztof)
- nvme-fc null pointer checks (Nigel)
- nvme-pci no numa node fix (Pratyush)
- nvme timeout fix for non-compliant controllers (Keith)
- MD pull via Song fixing regressions with both 6.5 and 6.6
- Fix a use-after-free regression in resizing blk-mq tags (Chengming)
* tag 'block-6.6-2023-09-15' of git://git.kernel.dk/linux:
nvme: avoid bogus CRTO values
md: Put the right device in md_seq_next
nvme-pci: do not set the NUMA node of device if it has none
blk-mq: fix tags UAF when shrinking q->nr_hw_queues
md/raid1: fix error: ISO C90 forbids mixed declarations
md: fix warning for holder mismatch from export_rdev()
md: don't dereference mddev after export_rdev()
nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid()
nvme: host: hwmon: constify pointers to hwmon_channel_info
nvmet-tcp: pass iov_len instead of sg->length to bvec_set_page()
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Merge tag 'io_uring-6.6-2023-09-15' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"Just a single fix, fixing a regression with poll first, recvmsg, and
using a provided buffer"
* tag 'io_uring-6.6-2023-09-15' of git://git.kernel.dk/linux:
io_uring/net: fix iter retargeting for selected buf
A change applied to v6.5 kernel brings an issue that usual GFP allocation
is done in atomic context under acquired spin-lock. Let us revert it.
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Merge tag 'firewire-fixes-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fix from Takashi Sakamoto:
"A change applied to v6.5 kernel brings an issue that usual GFP
allocation is done in atomic context under acquired spin-lock. Let us
revert it"
* tag 'firewire-fixes-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
Revert "firewire: core: obsolete usage of GFP_ATOMIC at building node tree"
connector:
- doc fix
exec:
- workaround lockdep issue
tests:
- fix a UAF
vkms:
- revert hrtimer fix
fbdev:
- g364fb: fix build failure with mips
i915:
- Only check eDP HPD when AUX CH is shared.
amdgpu:
- GC 9.4.3 fixes
- Fix white screen issues with S/G display on system with >= 64G of ram
- Replay fixes
- SMU 13.0.6 fixes
- AUX backlight fix
- NBIO 4.3 SR-IOV fixes for HDP
- RAS fixes
- DP MST resume fix
- Fix segfault on systems with no vbios
- DPIA fixes
amdkfd:
- CWSR grace period fix
- Unaligned doorbell fix
- CRIU fix for GFX11
- Add missing TLB flush on gfx10 and newer
radeon:
- make fence wait in suballocator uninterrruptable
gm12u320:
- Fix the timeout usage for usb_bulk_msg()
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Merge tag 'drm-fixes-2023-09-15' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular rc2 fixes pull, mostly made up of amdgpu stuff, one i915, and
a bunch of others, one vkms locking violation is reverted.
connector:
- doc fix
exec:
- workaround lockdep issue
tests:
- fix a UAF
vkms:
- revert hrtimer fix
fbdev:
- g364fb: fix build failure with mips
i915:
- Only check eDP HPD when AUX CH is shared.
amdgpu:
- GC 9.4.3 fixes
- Fix white screen issues with S/G display on system with >= 64G of ram
- Replay fixes
- SMU 13.0.6 fixes
- AUX backlight fix
- NBIO 4.3 SR-IOV fixes for HDP
- RAS fixes
- DP MST resume fix
- Fix segfault on systems with no vbios
- DPIA fixes
amdkfd:
- CWSR grace period fix
- Unaligned doorbell fix
- CRIU fix for GFX11
- Add missing TLB flush on gfx10 and newer
radeon:
- make fence wait in suballocator uninterrruptable
gm12u320:
- Fix the timeout usage for usb_bulk_msg()"
* tag 'drm-fixes-2023-09-15' of git://anongit.freedesktop.org/drm/drm: (29 commits)
drm/tests: helpers: Avoid a driver uaf
Revert "drm/vkms: Fix race-condition between the hrtimer and the atomic commit"
drm/amdkfd: Insert missing TLB flush on GFX10 and later
drm/i915: Only check eDP HPD when AUX CH is shared
drm/amd/display: Fix 2nd DPIA encoder Assignment
drm/amd/display: Add DPIA Link Encoder Assignment Fix
drm/amd/display: fix replay_mode kernel-doc warning
drm/amdgpu: Handle null atom context in VBIOS info ioctl
drm/amdkfd: Checkpoint and restore queues on GFX11
drm/amd/display: Adjust the MST resume flow
drm/amdgpu: fallback to old RAS error message for aqua_vanjaram
drm/amdgpu/nbio4.3: set proper rmmio_remap.reg_offset for SR-IOV
drm/amdgpu/soc21: don't remap HDP registers for SR-IOV
drm/amd/display: Don't check registers, if using AUX BL control
drm/amdgpu: fix retry loop test
drm/amd/display: Add dirty rect support for Replay
Revert "drm/amd: Disable S/G for APUs when 64GB or more host memory"
drm/amd/display: fix the white screen issue when >= 64GB DRAM
drm/amdkfd: Update CU masking for GFX 9.4.3
drm/amdkfd: Update cache info reporting for GFX v9.4.3
...
