When we end up returning extraneous objects during refill to a slab
where we just did a get_freelist_nofreeze(), it is likely no other CPU
has freed objects to it meanwhile. We can then reattach the remainder of
the freelist without having to walk the (potentially cache cold)
freelist for finding its tail to connect slab->freelist to it.
Add a __slab_try_return_freelist() function that does that. As suggested
by Hao Li, it doesn't need to also return the slab to the partial list,
because there's code in __refill_objects_node() that already does that
for any slabs where we don't detach the freelist in the first place. So
we just put the slab back to the pc.slabs list. It's no longer likely
that the list will be empty now, so remove the unlikely() annotation.
However, also change that code to add to the tail of the partial list
instead of head to match what __slab_free() did and avoid a regression,
that was reported for the earlier version by the kernel test robot [1].
This change will also affect slabs which were grabbed from the partial
list and not refilled from even partially, but those should be much more
rare than a partial refill.
[1] https://lore.kernel.org/all/202605112204.9382cecf-lkp@intel.com/
Reviewed-by: Hao Li <hao.li@linux.dev>
Tested-by: Hao Li <hao.li@linux.dev>
Reviewed-by: Harry Yoo (Oracle) <harry@kernel.org>
Link: https://patch.msgid.link/20260522-b4-refill-optimistic-return-v3-1-2ba78ec1c6ed@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
It was missed that idt_do_interrupt_irqoff() gets compiled on x84_64;
this is a problem for CFI builds because it includes an unadorned
indirect call. It is however completely dead code.
Rework things to not emit this function at all.
Fixes: 0701c9e17b ("x86/kvm/vmx: Move IRQ/NMI dispatch from KVM into x86 core")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reported-by: Calvin Owens <calvin@wbinvd.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260526090631.GA4149641@noisy.programming.kicks-ass.net
Backmerging to get GEM LRU fixes from commit 379e8f1c ("drm/gem: Make
the GEM LRU lock part of drm_device") and other updates from v7.1-rc5.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
When KVM derives the translation granule for emulated stage-1 and
stage-2 walks, it decodes TCR/VTCR.TGx and treats the granule as-is.
This is wrong when the guest programs a granule size that is not
advertised in the guest's ID_AA64MMFR0_EL1.TGRAN* fields.
Architecturally, such a value must be treated as an implemented granule
size. Choose an available one while prioritizing PAGE_SIZE.
Signed-off-by: Wei-Lin Chang <weilin.chang@arm.com>
Link: https://patch.msgid.link/20260414000334.3947257-5-weilin.chang@arm.com
[maz: minor tidying up]
Signed-off-by: Marc Zyngier <maz@kernel.org>
This patch replaces an instance of match + panic with const expect,
which is now usable in const contexts after the MSRV was updated to
1.85.0 (it was available since Rust 1.83.0).
Suggested-by: Gary Guo <gary@garyguo.net>
Link: https://github.com/Rust-for-Linux/linux/issues/1229
Signed-off-by: Daniel del Castillo <delcastillodelarosadaniel@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260408200949.99059-1-delcastillodelarosadaniel@gmail.com
[ Adjusted Git author's name with the Signed-off-by value. Reworded
slightly and removed duplicated word. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
TLBI handling derives the invalidation range from guest VTCR_EL2.TG0 in
get_guest_mapping_ttl() and compute_tlb_inval_range(). Switch these to
use a helper that returns the decoded VTCR_EL2.TG0 granule size instead
of decoding it inline.
This keeps the granule size derivation in one place and prepares for
following changes that adjust the effective granule size.
Signed-off-by: Wei-Lin Chang <weilin.chang@arm.com>
Link: https://patch.msgid.link/20260414000334.3947257-4-weilin.chang@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
The current code decodes TCR.TG0/TG1 and VTCR.TG0 inline at several
places. Extract this logic into helpers so the granule size can be
derived in one place. This enables us to alter the effective granule
size in the same place, which we will do in a later patch.
Signed-off-by: Wei-Lin Chang <weilin.chang@arm.com>
Link: https://patch.msgid.link/20260414000334.3947257-3-weilin.chang@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This rename aligns the stage-2 walker better with the stage-1 walker.
Also set up other non-VTCR walk info in the function.
Signed-off-by: Wei-Lin Chang <weilin.chang@arm.com>
Link: https://patch.msgid.link/20260414000334.3947257-2-weilin.chang@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Add the missing 'struct' keyword in the kernel-doc comment for
realtek_gpio_ctrl, and document the @cpumask_base and @cpu_irq_maskable
members that were added later but never described. Also fix the
mismatch between documented @imr_line_pos and the actual member name
line_imr_pos.
Fixes W=1 warning:
Warning: drivers/gpio/gpio-realtek-otto.c:66 cannot understand function prototype: 'struct realtek_gpio_ctrl'
Assisted-by: Opencode:BigPickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260528041031.728557-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
The most accepted style for the array terminator is to use a single
space between the curly braces and no trailing comma.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/985c86e80f35a944a4712f0c2ac8dd795868cdfb.1779893336.git.u.kleine-koenig@baylibre.com
[Bartosz: Fixed Uwe's S-B]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Named initializers are better readable and more robust to changes of the
struct definition. This robustness is relevant for a planned change to
struct platform_device_id replacing .driver_data by an anonymous unit.
While touching these arrays unify spacing and usage of commas.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/b8f7581e9311d5579447304ac4f2d557b29e4f9d.1779893336.git.u.kleine-koenig@baylibre.com
[Bartosz: Rebased on top of current linux-next where one of the drivers
no longer exists.]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
The driver explicitly set the .driver_data member of struct
platform_device_id to zero without relying on that value. Drop this
unused assignments.
While touching this array unify spacing and use named initializers for
.name.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/06dfc8d1df46467269ee6113f161edac234e51cf.1779893336.git.u.kleine-koenig@baylibre.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Fix two problems with the RUT1xx device tree:
- The memory is 32MB not 128MB
- The console is 19200 BPS
- Activate the PCI
- Disable the unused USB ports
Signed-off-by: Linus Walleij <linusw@kernel.org>
This adds a device tree for the Raidsonic IB-4210-B NAS, a slightly
under-powered version of IB-4220-B with half the memory and
the cheaper version of the SoC.
Signed-off-by: Linus Walleij <linusw@kernel.org>
This adds a device tree for the Verbatim S08V1901-D1 NAS
which also has the product names "Gigabit Network Hard Drive"
"Gigabit NAS" and maybe other names.
Signed-off-by: Linus Walleij <linusw@kernel.org>
This adds the Raidsonic IB-4210-B and the Verbatim
S08V1901-D1 that were missing from the bindings.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Verbatim Corporation has manufactured a few electronics items
over the years.
Link: https://en.wikipedia.org/wiki/Verbatim_(company)
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Linux now has a trigger specifically for all disk activity
and this is what the LED is used for so tag it like such.
Signed-off-by: Linus Walleij <linusw@kernel.org>
For ath12k:
- Add thermal throttling and cooling device support
- Add support for handling incumbent signal interference in 6 GHz
- Add support for channel 177 in the 5 GHz band
In addition, a large number of cleanup and minor bug fixing across
all supported drivers.
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Merge tag 'ath-next-20260526' of git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath
Jeff Johnson says:
==================
ath.git patches for v7.2 (PR #2)
For ath12k:
- Add thermal throttling and cooling device support
- Add support for handling incumbent signal interference in 6 GHz
- Add support for channel 177 in the 5 GHz band
In addition, a large number of cleanup and minor bug fixing across
all supported drivers.
==================
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This contains mainly:
UHR support (DPS, DUO, multi-link PM), NAN enhancements
(multicast, schedule config v2, multiple stations), EMLSR fixes, new
Killer/LNL device IDs, firmware API cleanups, and a few bugfixes
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Merge tag 'iwlwifi-next-2026-05-26' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
Miri Korenblit says:
====================
iwlwifi - next: 2026-05-26
This contains mainly:
UHR support (DPS, DUO, multi-link PM), NAN enhancements
(multicast, schedule config v2, multiple stations), EMLSR fixes, new
Killer/LNL device IDs, firmware API cleanups, and a few bugfixes
====================
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, there are 2 kernel cmdline ways to setup numa cma area:
"cma_pernuma=" and "numa_cma=", and there are 2 cma arrays as well,
while they have no difference technically. Robin suggested to cleanup
the code and only use one array [1], as "the apparent intent that
users only want one _or_ the other".
Simplify the code by only using one array to save the numa cma area.
And in rare case that a user really setup the 2 cmdline parameters
at the same time, let the per-node specific size setting 'numa_cma='
take priority over the global numa cma setting.
Link[1]: https://lore.kernel.org/lkml/43c5301c-fe6a-41e4-9482-ccfc7b62f2a7@arm.com/
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20260525015111.6267-1-feng.tang@linux.alibaba.com
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Merge v7.1-rc5 into drm-next
Boris Brezillion needs the gem lru fixes 379e8f1ca5 ("drm/gem: Make
the GEM LRU lock part of drm_device") backmerged for drm-misc-next.
That also means we need to sort out the rename conflict in panthor with
the fixup patch from Boris from drm-tip.
Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
When we try to assign a chanctx to a link, if
ieee80211_find_or_create_chanctx() failed, we try to evacuate a NAN
channel and call it again.
This logic is broken:
In case there are not enough chanctxs we will fail earlier,
when we check ieee80211_check_combinations().
To fix this, do the following in case ieee80211_check_combinations()
failed:
- check if there is a NAN channel that can be evacuated
- make ieee80211_check_combinations() not consider the chanctx of that NAN
channel, so we pretend that it was already evacuated
- If now ieee80211_check_combinations() is successful, we know that it
helped, and we can remove that NAN channel for real.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260527224745.5f7b10505145.I1712bc64f9eec9c99f05994208ad124624a29f1c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Sometimes, ieee80211_check_combinations fails, but it is hard to know
why exactly. We will have to return an array of reasons, one per
combination.
In cases where we want to check if it failed because there are not
enough chanctxs (and maybe remove one if needed), we can just not fill
in that chanctx(s) in iface_combination_params::num_different_channels
in ieee80211_fill_ifcomb_params, so that chanctx(s) won't be taken into
account.
To allow that, add an option to pass a callback to
ieee80211_fill_ifcomb_params. This callback will be called for each
chanctx we consider to count in num_different_channels and will return
whether or not this chanctx should be skipped and not counted.
This mechanism will be used later.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260527224745.0042232f996e.I5d323125e34f3b253510e85ceb7a770d59f689fb@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It's useful to be able to see the link addresses when the
interface links change, so add some prints to hwsim for the
vif link change callback.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260527224151.b22a048abc7c.Ief2132c5c4bb67fa56e90eb8e7d59dfd9f2b9378@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit 79240f3f6d ("wifi: nl80211: re-check wiphy netns in
nl80211_prepare_wdev_dump() continuation") fixed one dumpit path that
looked the wiphy up by index on a later call without confirming it was
still in the caller's netns. Two more dumpit paths have the same gap.
nl80211_testmode_dump() and nl80211_prepare_vendor_dump() both keep the
wiphy index in cb->args[] and look it up again on later calls, through
cfg80211_rdev_by_wiphy_idx() and wiphy_idx_to_wiphy(). The first call
binds to the caller's netns. A later call does not check it again. In
between, the wiphy can move to another netns via
NL80211_CMD_SET_WIPHY_NETNS.
Add the same net_eq() check to both. On a mismatch, return -ENODEV and
the dump ends.
No mainline driver registers .testmode_dump or
wiphy_vendor_command.dumpit, so these paths are not reachable today.
Drivers outside the tree can register either.
Signed-off-by: Maoyi Xie <maoyixie.tju@gmail.com>
Link: https://patch.msgid.link/20260527133358.2853238-1-maoyixie.tju@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The current S1G channel list in mac80211_hwsim does not represent
what S1G drivers would advertise that being 1MHz primaries. Also,
include the NO_PRIMARY flag on the edgeband 1MHz primaries to emulate
US operation such that it can also be tested.
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20260527033828.183821-3-lachlan.hodges@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
mac80211_hwsim_sta_rc_update() is unable to handle S1G widths so
when a new STA is added under a S1G vif the WARN is hit preventing
hwsim use for S1G. For now, skip calling rc_update() for S1G
interfaces. This is required such that the soon-to-be S1G hwsim tests
can successfully run.
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20260527033828.183821-2-lachlan.hodges@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We know that "start_raw" is true so remove this check and pull the code
in an tab.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Link: https://patch.msgid.link/ahPypOdz-KXh5KAJ@stanley.mountain
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add KUnit coverage for ieee80211_parse_neg_ttlm() to lock the sparse
link_map_presence layout against future regressions.
The sparse_presence_no_oob_read case crafts a negotiated TTLM element
with link_map_presence = BIT(0) | BIT(7) and bm_size = 2 in a buffer
sized exactly to the validated element length. Without the parser
fix this would read 14 bytes past the buffer when processing TID 7;
under KASAN that is a slab-out-of-bounds report.
The dense_presence_baseline case crafts a fully populated
link_map_presence = 0xff element to confirm that the cursor-advance
fix does not regress the path that was already correct.
Export ieee80211_parse_neg_ttlm via VISIBLE_IF_MAC80211_KUNIT so the
test can call it directly.
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Link: https://patch.msgid.link/20260515151719.1317659-3-michael.bommarito@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Lenovo Yoga Pro 7 15ASH11 with AMD RYZEN AI MAX+ 388 (Strix Halo, ACP
7.0) uses Realtek ALC287 series codec. The ALC269_FIXUP_LENOVO_XPAD_ACPI
in alc269_fixup_vendor_tbl[] can load lenovo_wmi_hotkey_utilities module
by default in this laptop, but the driver doesn't control mic mute LED.
If users run below command and the mic mute LED can work normally.
$sudo echo 'Capture Switch' >/sys/class/sound/ctl-led/mic/card1/attach
After added the SND_PCI_QUIRK quirk special for Lenovo Yoga Pro 7
15ASH11, the mic mute LED works well.
Fixes: 83dca2530f ("ALSA: hda/realtek: ALC269 fixup for Lenovo Yoga Pro 7 15ASH111 audio")
Signed-off-by: Jackie Dong <xy-jackie@139.com>
Link: https://patch.msgid.link/20260527130353.5658-1-xy-jackie@139.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
snd_ctl_new1() can return NULL when memory allocation fails. In
layout.c, the function does not check the return value before
dereferencing ctl->id.name or passing to aoa_snd_ctl_add(), which can
lead to a NULL pointer dereference.
Add NULL checks after snd_ctl_new1() calls and return early if any
fails.
Assisted-by: Opencode:DeepSeek-V4-Flash
Cc: stable@vger.kernel.org
Fixes: f3d9478b2c ("[ALSA] snd-aoa: add snd-aoa")
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Link: https://patch.msgid.link/tencent_35F3A25FEEBF190A2E15ED787754C57E3708@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
All the other struct dev_pm_ops hooks are named i915_pm_*(), but the
.runtime_suspend and .runtime_resume hooks are called
intel_runtime_suspend() and intel_runtime_resume(), respectively.
Rename intel_runtime_suspend() to i915_pm_runtime_suspend() and
intel_runtime_resume() to i915_pm_runtime_resume() to unify.
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/fc5b796a3fd764a64b257edfdbe08e54b690efbc.1779876087.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
The intel_display_power_suspend() and intel_display_power_resume()
functions are supposed to be called from the struct dev_pm_pops
.runtime_suspend and .runtime_resume hook paths. Name them accordingly
to intel_display_power_runtime_suspend() and
intel_display_power_runtime_resume().
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.coM>
Link: https://patch.msgid.link/4a8ae520e3151d6cf5d9e9e3a452f620cf781ee5.1779876087.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
snd_ctl_new1() can return NULL when memory allocation fails.
snd_cmipci_spdif_controls() does not check the return value before
dereferencing kctl->id.device, which can lead to a NULL pointer
dereference.
Add NULL checks after snd_ctl_new1() calls and return -ENOMEM if any
fails.
Assisted-by: Opencode:DeepSeek-V4-Flash
Cc: stable@vger.kernel.org
Fixes: f2f312ad88 ("ALSA: cmipci: Fix kctl->id initialization")
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Link: https://patch.msgid.link/tencent_964433DCD132125D5EDA79EE068A2D6EFA09@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
snd_ctl_new1() can return NULL when memory allocation fails.
snd_ymfpci_create_spdif_controls() does not check the return value
before dereferencing kctl->id.device, which can lead to a NULL pointer
dereference.
Add NULL checks after snd_ctl_new1() calls and return -ENOMEM if any
fails.
Assisted-by: Opencode:DeepSeek-V4-Flash
Cc: stable@vger.kernel.org
Fixes: c9b83ae4a1 ("ALSA: ymfpci: Fix kctl->id initialization")
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Link: https://patch.msgid.link/tencent_4745C5DC2333325C0EDAB1EFC88A136E6809@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
snd_ctl_new1() can return NULL when memory allocation fails. The
ice1712 driver calls snd_ctl_new1() without checking the return value
before dereferencing the pointer in multiple places (ice1712.c,
ice1724.c, aureon.c), which can lead to NULL pointer dereferences.
Add NULL checks after snd_ctl_new1() calls and return -ENOMEM if any
fails.
Assisted-by: Opencode:DeepSeek-V4-Flash
Cc: stable@vger.kernel.org
Fixes: b9a4efd61b ("ALSA: ice1712,ice1724: fix the kcontrol->id initialization")
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Link: https://patch.msgid.link/tencent_42E5E2AB1B6A5101F7EE8C2117F1F687BB07@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
snd_ctl_new1() can return NULL when memory allocation fails.
snd_gf1_pcm_volume_control() does not check the return value before
dereferencing kctl->id.index, which can lead to a NULL pointer
dereference.
Add a NULL check after snd_ctl_new1() and return -ENOMEM if it fails.
Assisted-by: Opencode:DeepSeek-V4-Flash
Cc: stable@vger.kernel.org
Fixes: c5ae57b1bb ("ALSA: gus: Fix kctl->id initialization")
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Link: https://patch.msgid.link/tencent_F644A3DCAD32945D62DB2FEEBE8A996F6809@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
When a device's default substream attaches to an identity domain, the SMMU
driver currently sets the device's STE between two modes:
Mode 1: Cfg=Translate, S1DSS=Bypass, EATS=1
Mode 2: Cfg=bypass (EATS is ignored by HW)
When there is an active PASID (non-default substream), mode 1 is used. And
when there is no PASID support or no active PASID, mode 2 is used.
The driver will also downgrade an STE from mode 1 to mode 2, when the last
active substream becomes inactive.
However, there are PCIe devices that demand ATS to be always on. For these
devices, their STEs have to use the mode 1 as HW ignores EATS with mode 2.
Change the driver accordingly:
- always use the mode 1
- never downgrade to mode 2
- allocate and retain a CD table (see note below)
Note that these devices might not support PASID, i.e. doing non-PASID ATS.
In such a case, the ssid_bits is set to 0. However, s1cdmax must be set to
a !0 value in order to keep the S1DSS field effective. Thus, when a master
requires ats_always_on, set its s1cdmax to at least 1, meaning that the CD
table will have a dummy entry (SSID=1) that will never be used.
Now for these devices, arm_smmu_cdtab_allocated() will always return true,
v.s. false prior to this change. When its default substream is attached to
an IDENTITY domain, its first CD is NULL in the table, which is a totally
valid case. Thus, add "!master->ats_always_on" to the condition.
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Nirmoy Das <nirmoyd@nvidia.com>
Acked-by: Nirmoy Das <nirmoyd@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Some NVIDIA GPU/NIC devices, though they don't implement CXL config space,
have many CXL-like properties. Call this kind "pre-CXL".
Similar to CXL.cache capability, these pre-CXL devices also require the ATS
function even when their RIDs are IOMMU bypassed, i.e. keep ATS "always on"
v.s. "on demand" when a non-zero PASID line gets enabled in SVA use cases.
Introduce pci_dev_specific_ats_required() quirk function to scan a list of
IDs for these devices. Then, include it in pci_ats_required().
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Nirmoy Das <nirmoyd@nvidia.com>
Tested-by: Nirmoy Das <nirmoyd@nvidia.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
snd_ctl_new1() can return NULL when memory allocation fails.
snd_es1938_mixer() does not check the return value before dereferencing
the pointer, which can lead to a NULL pointer dereference.
Add a NULL check after snd_ctl_new1() and return -ENOMEM if it fails.
Assisted-by: Opencode:DeepSeek-V4-Flash
Cc: stable@vger.kernel.org
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Link: https://patch.msgid.link/tencent_E0DC65165FDF2C8982BAFB6794B854B53B0A@qq.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Controlled by IOMMU drivers, ATS can be enabled "on demand", when a given
PASID on a device is attached to an I/O page table. This is working, even
when a device has no translation on its RID (i.e., RID is IOMMU bypassed).
However, certain PCIe devices require non-PASID ATS on their RID even when
the RID is IOMMU bypassed. Call this "ATS always on" in IOMMU term.
For example, CXL spec r4.0 notes in sec 3.2.5.13 Memory Type on CXL.cache:
"To source requests on CXL.cache, devices need to get the Host Physical
Address (HPA) from the Host by means of an ATS request on CXL.io."
In other words, the CXL.cache capability requires ATS; otherwise, it can't
access host physical memory.
Introduce a new pci_ats_required() helper for the IOMMU driver to scan a
PCI device and shift ATS policies between "on demand" and "always on".
Add the support for CXL.cache devices first. Pre-CXL devices will be added
in quirks.c file.
Note that pci_ats_required() validates against pci_ats_supported(), so we
ensure that untrusted devices (e.g. external ports) will not be always on.
This maintains the existing ATS security policy regarding potential side-
channel attacks via ATS.
Cc: linux-cxl@vger.kernel.org
Suggested-by: Vikram Sethi <vsethi@nvidia.com>
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Nirmoy Das <nirmoyd@nvidia.com>
Acked-by: Nirmoy Das <nirmoyd@nvidia.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Smatch complains about the NULL check on "iommu" because list_entry()
can't be NULL. Clean up this code by using list_for_each_entry().
Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
When -Wformat-security is enabled, it catches a call to
iommu_device_sysfs_add() that passes a string variable in
place of a format:
drivers/iommu/vsi-iommu.c: In function 'vsi_iommu_probe':
drivers/iommu/vsi-iommu.c:717:9: error: format not a string literal and no format arguments [-Werror=format-security]
717 | err = iommu_device_sysfs_add(&iommu->iommu, dev, NULL, dev_name(dev));
| ^~~
Pass this indirectly using "%s" as the format instead.
Fixes: 917ace84b7 ("iommu: Add verisilicon IOMMU driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
In init_iommu_one(), when processing IOMMU EFR attributes, the code checks
whether GASUP is enabled. If GASUP is not enabled, the code falls back to
legacy guest IR mode and then breaks out of the switch statement.
This break incorrectly skips the subsequent initialization steps that
follow the GASUP check. These initializations are independent of GASUP
support and must always be performed.
Fix this by replacing the early break with a conditional else block,
ensuring that the XTSUP check is only skipped when GASUP is not available.
Fixes: a44092e326 ("iommu/amd: Use IVHD EFR for early initialization of IOMMU features")
Reported-by: Sudheer Dantuluri <dantuluris@google.com>
Tested-by: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
- Fix the Vec::reserve() doc test to properly account for the existing
vector length in the capacity assertion
- Fix an incorrect operator in the Vec::extend_with() SAFETY comment;
add a doc test demonstrating basic usage and the zero-length case
- Cleanup all imports in the alloc module and its doctests to use the
"kernel vertical" import style
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Merge tag 'alloc-7.2-rc1' of https://github.com/Rust-for-Linux/linux into rust-next
Pull alloc updates from Danilo Krummrich:
- Fix the 'Vec::reserve()' doctest to properly account for the existing
vector length in the capacity assertion.
- Fix an incorrect operator in the 'Vec::extend_with()' SAFETY comment;
add a doc test demonstrating basic usage and the zero-length case.
- Cleanup all imports in the alloc module and its doctests to use the
"kernel vertical" import style.
* tag 'alloc-7.2-rc1' of https://github.com/Rust-for-Linux/linux:
rust: alloc: cleanup doctest imports to "kernel vertical" style
rust: alloc: cleanup imports and use "kernel vertical" style
rust: alloc: fix `Vec::extend_with` SAFETY comment
rust: alloc: add doc test for `Vec::extend_with`
rust: alloc: fix assert in `Vec::reserve` doc test
