This reverts commit 465b9ee0ee.
Such notifications fit better into core or nfnetlink_hook code,
following the NFNL_MSG_HOOK_GET message format.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Its a kernel implementation detail, at least at this time:
We can later decide to revert this patch if there is a compelling
reason, but then we should also remove the ifdef that prevents exposure
of ip_conntrack_status enum IPS_NAT_CLASH value in the uapi header.
Clash entries are not included in dumps (true for both old /proc
and ctnetlink) either. So for now exclude the clash bit when dumping.
Fixes: 7e5c6aa67e ("netfilter: nf_tables: add packets conntrack state to debug trace info")
Link: https://lore.kernel.org/netfilter-devel/aGwf3dCggwBlRKKC@strlen.de/
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The selftest doesn't cover this error path:
scratch = *raw_cpu_ptr(m->scratch);
if (unlikely(!scratch)) { // here
cover this too.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Previous patch added a new clash resolution test case.
Also use this during conntrack resize stress test in addition
to icmp ping flood.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add a dedicated test to exercise conntrack clash resolution path.
Test program emits 128 identical udp packets in parallel, then reads
back replies from socat echo server.
Also check (via conntrack -S) that the clash path was hit at least once.
Due to the racy nature of the test its possible that despite the
threaded program all packets were processed in-order or on same cpu,
emit a SKIP warning in this case.
Two tests are added:
- one to test the simpler, non-nat case
- one to exercise clash resolution where packets
might have different nat transformations attached to them.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Extend the resize test:
- continuously dump table both via /proc and ctnetlink interfaces while
table is resized in a loop.
- if socat is available, send udp packets in additon to ping requests.
- increase/decrease the icmp and udp timeouts while resizes are happening.
This makes sure we also exercise the 'ct has expired' check that happens
on conntrack lookup.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Fix several minor typo errors in comments:
- Remove duplicated word "a" in "a a VID / GroupID".
- Correct "Opcopdes" to "Opcodes" in CXL spec reference.
- Fix spelling of "implemnted" to "implemented".
Improves code readability and documentation consistency.
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://lore.kernel.org/r/20250624194350.109790-4-alok.a.tiwari@oracle.com
Signed-off-by: Will Deacon <will@kernel.org>
The IRQ name format string used in devm_kasprintf() mistakenly included
a newline character "\n".
This could lead to confusing log output or misformatted names in sysfs
or debug messages.
This fix removes the newline to ensure proper IRQ naming.
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://lore.kernel.org/r/20250624194350.109790-3-alok.a.tiwari@oracle.com
Signed-off-by: Will Deacon <will@kernel.org>
The previous code mistakenly swapped the count and size parameters.
This fix corrects the argument order in devm_kcalloc() to follow the
conventional count, size form, avoiding potential confusion or bugs.
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://lore.kernel.org/r/20250624194350.109790-2-alok.a.tiwari@oracle.com
Signed-off-by: Will Deacon <will@kernel.org>
It's possible for a poll_table to be null. This can happen if an
end-user just wants to know if a resource has events right now without
registering a waiter for when events become available. Furthermore,
these null pointers should be handled transparently by the API, so we
should not change `from_ptr` to return an `Option`. Thus, change
`PollTable` to wrap a raw pointer rather than use a reference so that
you can pass null.
Comments mentioning `struct poll_table` are changed to just `poll_table`
since `poll_table` is a typedef. (It's a typedef because it's supposed
to be opaque.)
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
The Lenovo Yoga Book 9i GenX has the wrong values in the cirrus,dev-index
_DSD property. Add a fixup for this model to ignore the property and
hardcode the index from the I2C bus address.
The error in the cirrus,dev-index property would prevent the second amp
instance from probing. The component binding would never see all the
required instances and so there would not be a binding between
patch_realtek.c and the cs35l56 driver.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reported-by: Brian Howard <blhoward2@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220228
Link: https://patch.msgid.link/20250714110154.204740-1-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The bootloader configures a reserved memory region for framebuffer,
which is protected by the IOMMU. The kernel-side driver is oblivious as
of which memory region is set up by the bootloader. In such case, the
IOMMU tries to reference the reserved region - which is not reserved in
the kernel anymore - and it results in an unrecoverable page fault. More
information about it is provided in [1].
Add support for reserved regions using iommu_dma_get_resv_regions().
For OF supported boards, this requires defining the region in the
iommu-addresses property of the IOMMU owner's node.
Link: https://lore.kernel.org/r/544ad69cba52a9b87447e3ac1c7fa8c3@disroot.org [1]
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://lore.kernel.org/r/20250712-exynos-sysmmu-resv-regions-v1-1-e79681fcab1a@disroot.org
Signed-off-by: Will Deacon <will@kernel.org>
Add the HiSilicon uncore frequency scaling driver for Kunpeng SoCs based on
the devfreq framework. The uncore domain contains shared computing
resources, including system interconnects and L3 cache. The uncore
frequency significantly impacts the system-wide performance as well as
power consumption. This driver adds support for runtime management of
uncore frequency from kernel and userspace. The main function includes
setting and getting frequencies, changing frequency scaling policies, and
querying the list of CPUs whose performance is significantly related to
this uncore frequency domain, etc. The driver communicates with a platform
controller through an ACPI PCC mailbox to take the actual actions of
frequency scaling.
Co-developed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20250623143401.4095045-3-zhanjie9@hisilicon.com/
Extend the devfreq_dev_profile to allow drivers optionally create
device-specific sysfs ABIs together with other common devfreq ABIs under
the devfreq device path.
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20250623143401.4095045-2-zhanjie9@hisilicon.com/
On SM8250 / QRB5165-RB5 using PRR bits resets the device, most likely
because of the hyp limitations. Disable PRR support on that platform.
Fixes: 7f2ef1bfc7 ("iommu/arm-smmu: Add support for PRR bit setup")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Reviewed-by: Rob Clark <robin.clark@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250705-iommu-fix-prr-v2-1-406fecc37cf8@oss.qualcomm.com
Signed-off-by: Will Deacon <will@kernel.org>
The error path for err_free_master_domain leaks the vmaster. Move all
the kfrees for vmaster into the goto error section.
Fixes: cfea71aea9 ("iommu/arm-smmu-v3: Put iopf enablement in the domain attach path")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/20250711204020.1677884-1-nicolinc@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Commit 33729a5fc0 ("iommu/io-pgtable-arm: Remove split on unmap
behavior") removed the last user of the macro iopte_prot. Remove the
macro definition of iopte_prot as well as three other related
definitions.
Fixes: 33729a5fc0 ("iommu/io-pgtable-arm: Remove split on unmap behavior")
Signed-off-by: Daniel Mentz <danielmentz@google.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20250708211705.1567787-1-danielmentz@google.com
Signed-off-by: Will Deacon <will@kernel.org>
Merge the pmdomain fixes for v6.16-rc[n] into the next branch, to allow
them to get tested together with the new changes that are targeted for
v6.17.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently cpu hotplug with the PREEMPT_RT option set in the kernel is
not supported because the underlying generic power domain functions
used in the cpu hotplug callbacks are incompatible from a lock point
of view. This situation prevents the suspend to idle to reach the
deepest idle state for the "cluster" as identified in the
undermentioned commit.
Use the compatible ones when PREEMPT_RT is enabled and remove the
boolean disabling the hotplug callbacks with this option.
With this change the platform can reach the deepest idle state
allowing at suspend time to consume less power.
Tested-on Lenovo T14s with the following script:
echo 0 > /sys/devices/system/cpu/cpu3/online
BEFORE=$(cat /sys/kernel/debug/pm_genpd/power-domain-cpu-cluster0/idle_states | grep S0 | awk '{ print $3 }') ;
rtcwake -s 1 -m mem;
AFTER=$(cat /sys/kernel/debug/pm_genpd/power-domain-cpu-cluster0/idle_states | grep S0 | awk '{ print $3 }');
if [ $BEFORE -lt $AFTER ]; then
echo "Test successful"
else
echo "Test failed"
fi
echo 1 > /sys/devices/system/cpu/cpu3/online
Fixes: 1c4b2932bd ("cpuidle: psci: Enable the hierarchical topology for s2idle on PREEMPT_RT")
Cc: Raghavendra Kakarla <quic_rkakarla@quicinc.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250709154728.733920-1-daniel.lezcano@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Use devm allocators for enabling the bus clock and
clk_rate_exclusive_get(). This simplifies error handling and the remove
callback.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Tested-by: Corentin LABBE <clabbe.montjoie@gmail.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20250513203908.205060-2-u.kleine-koenig@baylibre.com/
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Commit 96ffcdf239 ("PM / devfreq: Remove redundant governor_name from
struct devfreq") removes governor_name and uses governor->name to replace
it. But devfreq->governor may be NULL and directly using
devfreq->governor->name may cause null pointer exception. Move the check of
governor to before using governor->name.
Fixes: 96ffcdf239 ("PM / devfreq: Remove redundant governor_name from struct devfreq")
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://lore.kernel.org/lkml/20250421030020.3108405-5-zhenglifeng1@huawei.com/
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
The calling of devfreq_get_freq_range() in devfreq_add_device() is
redundant because min_freq and max_freq are never used. Remove it.
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://lore.kernel.org/lkml/20250421030020.3108405-4-zhenglifeng1@huawei.com/
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Limit max_freq in devfreq_get_freq_range() with scaling_min_freq to avoid
showing an unreachable freq when reading it.
Use macro clamp to simplify code.
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://lore.kernel.org/lkml/20250421030020.3108405-3-zhenglifeng1@huawei.com/
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
qcom uses the ARM_32_LPAE_S1 format which uses the ARM long descriptor
page table. Eventually arm_32_lpae_alloc_pgtable_s1() will adjust
the pgsize_bitmap with:
cfg->pgsize_bitmap &= (SZ_4K | SZ_2M | SZ_1G);
So the current declaration is nonsensical. Fix it to be just SZ_4K which
is what it has actually been using so far. Most likely the qcom driver
copy and pasted the pgsize_bitmap from something using the ARM_V7S format.
Fixes: db64591de4 ("iommu/qcom: Remove iommu_ops pgsize_bitmap")
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Closes: https://lore.kernel.org/all/CA+G9fYvif6kDDFar5ZK4Dff3XThSrhaZaJundjQYujaJW978yg@mail.gmail.com/
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/0-v1-65a7964d2545+195-qcom_pgsize_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Support mute LED on keyboard for Lenovo Yoga series products with
Realtek ALC287 chipset.
Tested on Lenovo Slim Pro 7 14APH8.
[ slight comment cleanup by tiwai ]
Signed-off-by: Jackie Dong <xy-jackie@139.com>
Link: https://patch.msgid.link/20250714094655.4657-1-xy-jackie@139.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Merge series from Luca Weiss <luca.weiss@fairphone.com>:
Document and add support for the regulators on PM7550 and PMR735B, which
can be paired with the Milos SoC.
Merge series from Peng Fan <peng.fan@nxp.com>:
This patchset is a pick up of patch 1,2 from [1]. And I also collect
Linus's R-b for patch 2. After this patchset, there is only one user of
of_gpio.h left in sound driver(pxa2xx-ac97).
of_gpio.h is deprecated, update the driver to use GPIO descriptors.
Patch 1 is to drop legacy platform data which in-tree no users are using it
Patch 2 is to convert to GPIO descriptors
Checking the DTS that use the device, all are using GPIOD_ACTIVE_LOW
polarity for reset-gpios, so all should work as expected with this patch.
[1] https://lore.kernel.org/all/20250408-asoc-gpio-v1-0-c0db9d3fd6e9@nxp.com/
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
Tidy up a bunch of makefile and Kconfig things, and pull the HID and IRQ
into the main SDCA module.
Changes since v1:
- Don't expose SND_SOC_SDCA to the user
- Simplify the makefile bits for HID and IRQ
Thanks,
Charles
Charles Keepax (2):
ASoC: SDCA: Kconfig/Makefile fixups
ASoC: SDCA: Pull HID and IRQ into the primary SDCA module
sound/soc/sdca/Kconfig | 13 +++++++++----
sound/soc/sdca/Makefile | 12 ++++--------
sound/soc/sdca/sdca_functions.c | 1 -
sound/soc/sdca/sdca_hid.c | 2 +-
sound/soc/sdca/sdca_interrupts.c | 8 ++++----
5 files changed, 18 insertions(+), 18 deletions(-)
--
2.39.5
Merge series from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:
ASoC has 2 functions to set bias level.
(A) snd_soc_dapm_force_bias_level()
(B) snd_soc_dapm_set_bias_level()
(A) sets dapm->bias_level, but (B) is not.
I think we should set it on both (A) and (B).
I think it is miss or bug, but Samsung is the only vendor that feels a
problem about this.
I think this patch (= [1/5]) is correct approach, but some non-samsung
vendor might get affect from this patch-set, so I added [RFC] on this
patch-set.
Furthermore, (B) cares both Card and Component, (A) cares Component only.
I guess it is the reason why it is called as "force" bias_level function.
(A) is used from each drivers, (B) is used from soc-dapm only.
I'm not 100% sure though, except special cases, each driver should use (B),
I guess ?
The logic in cache_tag_flush_all() to iterate over cache tags and issue
TLB invalidations is largely duplicated in cache_tag_flush_range(), with
the only difference being the range parameters.
Extend cache_tag_flush_range() to handle a full address space flush when
called with start = 0 and end = ULONG_MAX. This allows
cache_tag_flush_all() to simply delegate to cache_tag_flush_range()
Signed-off-by: Ethan Milon <ethan.milon@eviden.com>
Link: https://lore.kernel.org/r/20250708214821.30967-2-ethan.milon@eviden.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-12-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
The function cache_tag_flush_all() was originally implemented with
incorrect device TLB invalidation logic that does not handle PASID, in
commit c4d27ffaa8 ("iommu/vt-d: Add cache tag invalidation helpers")
This causes regressions where full address space TLB invalidations occur
with a PASID attached, such as during transparent hugepage unmapping in
SVA configurations or when calling iommu_flush_iotlb_all(). In these
cases, the device receives a TLB invalidation that lacks PASID.
This incorrect logic was later extracted into
cache_tag_flush_devtlb_all(), in commit 3297d047cd ("iommu/vt-d:
Refactor IOTLB and Dev-IOTLB flush for batching")
The fix replaces the call to cache_tag_flush_devtlb_all() with
cache_tag_flush_devtlb_psi(), which properly handles PASID.
Fixes: 4f609dbff5 ("iommu/vt-d: Use cache helpers in arch_invalidate_secondary_tlbs")
Fixes: 4e589a5368 ("iommu/vt-d: Use cache_tag_flush_all() in flush_iotlb_all")
Signed-off-by: Ethan Milon <ethan.milon@eviden.com>
Link: https://lore.kernel.org/r/20250708214821.30967-1-ethan.milon@eviden.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-11-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Make First/Second stage specific functions that follow the same pattern in
intel_iommu_domain_alloc_first/second_stage() for computing
EOPNOTSUPP. This makes the code easier to understand as if we couldn't
create a domain with the parameters for this IOMMU instance then we
certainly are not compatible with it.
Check superpage support directly against the per-stage cap bits and the
pgsize_bitmap.
Add a note that the force_snooping is read without locking. The locking
needs to cover the compatible check and the add of the device to the list.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/7-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-10-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
First Stage and Second Stage have very different ways to deny
no-snoop. The first stage uses the PGSNP bit which is global per-PASID so
enabling requires loading new PASID entries for all the attached devices.
Second stage uses a bit per PTE, so enabling just requires telling future
maps to set the bit.
Since we now have two domain ops we can have two functions that can
directly code their required actions instead of a bunch of logic dancing
around use_first_level.
Combine domain_set_force_snooping() into the new functions since they are
the only caller.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/6-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-9-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Use the domain ops pointer to tell what kind of domain it is instead of
the internal use_first_level indication. This also protects against
wrongly using a SVA/nested/IDENTITY/BLOCKED domain type in places they
should not be.
The only remaining uses of use_first_level outside the paging domain are in
paging_domain_compatible() and intel_iommu_enforce_cache_coherency().
Thus, remove the useless sets of use_first_level in
intel_svm_domain_alloc() and intel_iommu_domain_alloc_nested(). None of
the unique ops for these domain types ever reference it on their call
chains.
Add a WARN_ON() check in domain_context_mapping_one() as it only works
with second stage.
This is preparation for iommupt which will have different ops for each of
the stages.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/5-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-8-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Create stage specific functions that check the stage specific conditions
if each stage can be supported.
Have intel_iommu_domain_alloc_paging_flags() call both stages in sequence
until one does not return EOPNOTSUPP and prefer to use the first stage if
available and suitable for the requested flags.
Move second stage only operations like nested_parent and dirty_tracking
into the second stage function for clarity.
Move initialization of the iommu_domain members into paging_domain_alloc().
Drop initialization of domain->owner as the callers all do it.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/4-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-7-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
The NID is used to control which NUMA node memory for the page table is
allocated it from. It should be a permanent property of the page table
when it was allocated and not change during attach/detach of devices.
Reviewed-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/3-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Fixes: 7c204426b8 ("iommu/vt-d: Add domain_alloc_paging support")
Link: https://lore.kernel.org/r/20250714045028.958850-6-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Pass the phys_addr_t down through the call chain from the top instead of
passing a pgd_t * KVA. This moves the __pa() into
domain_setup_first_level() which is the first function to obtain the pgd
from the IOMMU page table in this call chain.
The SVA flow is also adjusted to get the pa of the mm->pgd.
iommput will move the __pa() into iommupt code, it never shares the KVA of
the page table with the driver.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-4-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
The iotlb_sync_map iommu ops allows drivers to perform necessary cache
flushes when new mappings are established. For the Intel iommu driver,
this callback specifically serves two purposes:
- To flush caches when a second-stage page table is attached to a device
whose iommu is operating in caching mode (CAP_REG.CM==1).
- To explicitly flush internal write buffers to ensure updates to memory-
resident remapping structures are visible to hardware (CAP_REG.RWBF==1).
However, in scenarios where neither caching mode nor the RWBF flag is
active, the cache_tag_flush_range_np() helper, which is called in the
iotlb_sync_map path, effectively becomes a no-op.
Despite being a no-op, cache_tag_flush_range_np() involves iterating
through all cache tags of the iommu's attached to the domain, protected
by a spinlock. This unnecessary execution path introduces overhead,
leading to a measurable I/O performance regression. On systems with NVMes
under the same bridge, performance was observed to drop from approximately
~6150 MiB/s down to ~4985 MiB/s.
Introduce a flag in the dmar_domain structure. This flag will only be set
when iotlb_sync_map is required (i.e., when CM or RWBF is set). The
cache_tag_flush_range_np() is called only for domains where this flag is
set. This flag, once set, is immutable, given that there won't be mixed
configurations in real-world scenarios where some IOMMUs in a system
operate in caching mode while others do not. Theoretically, the
immutability of this flag does not impact functionality.
Reported-by: Ioanna Alifieraki <ioanna-maria.alifieraki@canonical.com>
Closes: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2115738
Link: https://lore.kernel.org/r/20250701171154.52435-1-ioanna-maria.alifieraki@canonical.com
Fixes: 129dab6e12 ("iommu/vt-d: Use cache_tag_flush_range_np() in iotlb_sync_map")
Cc: stable@vger.kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20250703031545.3378602-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20250714045028.958850-3-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
iommu init hook is wrapped in CONFI_X86 and is a remnant of dmar.c when
it was a common code in "drivers/pci/dmar.c". This was added in commit
(9d5ce73a64 x86: intel-iommu: Convert detect_intel_iommu to use
iommu_init hook)
Now this is built only for x86. This config wrap could be removed.
Signed-off-by: Vineeth Pillai (Google) <vineeth@bitbyteword.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20250616131740.3499289-1-vineeth@bitbyteword.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20250714045028.958850-2-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Clear the ECC error and counter registers during initialization/probe to avoid
reporting stale errors that may have occurred before EDAC registration.
For that, unify the Zynq and ZynqMP ECC state reading paths and simplify the
code.
[ bp: Massage commit message.
Fix an -Wsometimes-uninitialized warning as reported by
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202507141048.obUv3ZUm-lkp@intel.com ]
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250713050753.7042-1-shubhrajyoti.datta@amd.com
It's has been reported that some Samsung platforms fails to boot with
genpd's new sync_state support.
Typically the problem exists for platforms where bootloaders are turning on
the splash-screen and handing it over to be managed by the kernel. However,
at this point, it's not clear how to correctly solve the problem.
Although, to make the platforms boot again, let's add a temporary hack in
the samsung power-domain provider driver, which enforces a sync_state that
allows the power-domains to be reset before consumer devices starts to be
attached.
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/all/212a1a56-08a5-48a5-9e98-23de632168d0@samsung.com
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20250711114719.189441-1-ulf.hansson@linaro.org
David Howells <dhowells@redhat.com> says:
Here are a couple of patches that fix the use of fscaching with ceph:
(1) Fix the read collector to mark the write request that it creates to copy
data to the cache with NETFS_RREQ_OFFLOAD_COLLECTION so that it will run
the write collector on a workqueue as it's meant to run in the background
and the app isn't going to wait for it.
(2) Fix the read collector to wake up the copy-to-cache write request after
it sets NETFS_RREQ_ALL_QUEUED if the write request doesn't have any
subrequests left on it. ALL_QUEUED indicates that there won't be any
more subreqs coming and the collector should clean up - except that an
event is needed to trigger that, but it only gets events from subreq
termination and so the last event can beat us to setting ALL_QUEUED.
* patches from https://lore.kernel.org/20250711151005.2956810-1-dhowells@redhat.com:
netfs: Fix race between cache write completion and ALL_QUEUED being set
netfs: Fix copy-to-cache so that it performs collection with ceph+fscache
Link: https://lore.kernel.org/20250711151005.2956810-1-dhowells@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
When netfslib is issuing subrequests, the subrequests start processing
immediately and may complete before we reach the end of the issuing
function. At the end of the issuing function we set NETFS_RREQ_ALL_QUEUED
to indicate to the collector that we aren't going to issue any more subreqs
and that it can do the final notifications and cleanup.
Now, this isn't a problem if the request is synchronous
(NETFS_RREQ_OFFLOAD_COLLECTION is unset) as the result collection will be
done in-thread and we're guaranteed an opportunity to run the collector.
However, if the request is asynchronous, collection is primarily triggered
by the termination of subrequests queuing it on a workqueue. Now, a race
can occur here if the app thread sets ALL_QUEUED after the last subrequest
terminates.
This can happen most easily with the copy2cache code (as used by Ceph)
where, in the collection routine of a read request, an asynchronous write
request is spawned to copy data to the cache. Folios are added to the
write request as they're unlocked, but there may be a delay before
ALL_QUEUED is set as the write subrequests may complete before we get
there.
If all the write subreqs have finished by the ALL_QUEUED point, no further
events happen and the collection never happens, leaving the request
hanging.
Fix this by queuing the collector after setting ALL_QUEUED. This is a bit
heavy-handed and it may be sufficient to do it only if there are no extant
subreqs.
Also add a tracepoint to cross-reference both requests in a copy-to-request
operation and add a trace to the netfs_rreq tracepoint to indicate the
setting of ALL_QUEUED.
Fixes: e2d46f2ec3 ("netfs: Change the read result collector to only use one work item")
Reported-by: Max Kellermann <max.kellermann@ionos.com>
Link: https://lore.kernel.org/r/CAKPOu+8z_ijTLHdiCYGU_Uk7yYD=shxyGLwfe-L7AV3DhebS3w@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/20250711151005.2956810-3-dhowells@redhat.com
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Viacheslav Dubeyko <slava@dubeyko.com>
cc: Alex Markuze <amarkuze@redhat.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: netfs@lists.linux.dev
cc: ceph-devel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
The netfs copy-to-cache that is used by Ceph with local caching sets up a
new request to write data just read to the cache. The request is started
and then left to look after itself whilst the app continues. The request
gets notified by the backing fs upon completion of the async DIO write, but
then tries to wake up the app because NETFS_RREQ_OFFLOAD_COLLECTION isn't
set - but the app isn't waiting there, and so the request just hangs.
Fix this by setting NETFS_RREQ_OFFLOAD_COLLECTION which causes the
notification from the backing filesystem to put the collection onto a work
queue instead.
Fixes: e2d46f2ec3 ("netfs: Change the read result collector to only use one work item")
Reported-by: Max Kellermann <max.kellermann@ionos.com>
Link: https://lore.kernel.org/r/CAKPOu+8z_ijTLHdiCYGU_Uk7yYD=shxyGLwfe-L7AV3DhebS3w@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/20250711151005.2956810-2-dhowells@redhat.com
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Viacheslav Dubeyko <slava@dubeyko.com>
cc: Alex Markuze <amarkuze@redhat.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: netfs@lists.linux.dev
cc: ceph-devel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
Support for overlapping domains added in commit e3589f6c81 ("sched:
Allow for overlapping sched_domain spans") also allowed forcefully
setting SD_OVERLAP for !NUMA domains via FORCE_SD_OVERLAP sched_feat().
Since NUMA domains had to be presumed overlapping to ensure correct
behavior, "sched_domain_topology_level::flags" was introduced. NUMA
domains added the SDTL_OVERLAP flag would ensure SD_OVERLAP was always
added during build_sched_domains() for these domains, even when
FORCE_SD_OVERLAP was off.
Condition for adding the SD_OVERLAP flag at the aforementioned commit
was as follows:
if (tl->flags & SDTL_OVERLAP || sched_feat(FORCE_SD_OVERLAP))
sd->flags |= SD_OVERLAP;
The FORCE_SD_OVERLAP debug feature was removed in commit af85596c74
("sched/topology: Remove FORCE_SD_OVERLAP") which left the NUMA domains
as the exclusive users of SDTL_OVERLAP, SD_OVERLAP, and SD_NUMA flags.
Get rid of SDTL_OVERLAP and SD_OVERLAP as they have become redundant
and instead rely on SD_NUMA to detect the only overlapping domain
currently supported. Since SDTL_OVERLAP was the only user of
"tl->flags", get rid of "sched_domain_topology_level::flags" too.
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/ba4dbdf8-bc37-493d-b2e0-2efb00ea3e19@amd.com
