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git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath
Jeff Johnson says:
==================
ath.git patches for v7.2 (PR #1)
For ath9k:
- improve the GPIO interface.
For ath12k:
- replace dynamic memory allocation in WMI rx path
- avoid buffer overread when configuring IRQs
- code housekeeping
==================
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath
Jeff Johnson says:
==================
ath.git update for v7.1-rc2
Fix an ath10k build dependency issue along with a few ath12k bugs.
==================
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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RSI driver use both self-exit(kthread_complete_and_exit) and external-stop
(kthread_stop) when killing a kthread. Generally, kthread_stop() is called
first, and in this case, no particular issues occur.
However, in rare instances where kthread_complete_and_exit() is called
first and then kthread_stop() is called, a UAF occurs because the kthread
object, which has already exited and been freed, is accessed again.
Therefore, to prevent this with minimal modification, you must remove
kthread_stop() and change the code to wait until the self-exit operation
is completed.
Cc: <stable@vger.kernel.org>
Reported-by: syzbot+5de83f57cd8531f55596@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/69e5d03b.a00a0220.1bd0ca.0064.GAE@google.com/
Fixes: 4c62764d0fc2 ("rsi: improve kernel thread handling to fix kernel panic")
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Link: https://patch.msgid.link/20260422173846.37640-1-aha310510@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Most IXP4xx platforms are Device Tree-based, and GPIO consumers
use phandle-based descriptors rather than legacy integer GPIO numbers.
Audit of the IXP4xx platform shows:
- No gpio_request(), gpio_get_value(), or gpio_set_value() users
in arch/arm/mach-ixp4xx/
- No platform data using fixed GPIO numbers
This switches the gpiochip to dynamic base allocation, aligning
with modern gpiolib expectations where GPIO numbers are not globally
fixed and may be assigned dynamically.
Set gpiochip.base = -1 to allow gpiolib to assign the GPIO base
dynamically, avoiding global GPIO number space conflicts.
Signed-off-by: Mohamed Ayman <mohamedaymanworkspace@gmail.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260427214311.331996-1-mohamedaymanworkspace@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into gpio/for-next
ASoC: wsa881x: Move custom workaround to gpiolib-of
Move a workaround for misdescribed GPIOs from the wsa881x to use a
generic implementation in gpiolib-of.
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The HT/VHT/HE/EHT/UHR operation can change, and might thus be
updated on each beacon update. Move them to the beacon struct
and parse them out of the beacon also on updates, not just on
starting the AP.
This also fixes checks in two ways:
- Regulatory checks in nl80211_validate_ap_phy_operation() are
now done also on updates, disallowing enabling HE/EHT/UHR on
channels that don't allow that after start. This checks only
operation now, but clients can't use it without operation.
- NL80211_ATTR_UHR_OPERATION is now required whenever UHR is
present in the beacon, and rejected otherwise.
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260415144514.f70758a46904.I0d21120b41eed661eefc61d5417dadaae7145845@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In the final version of 802.11be-2024, Transition Delay and Padding
Delay subfield are for both EMLSR and EMLMR. Depending if the mode is
EMLSR or EMLMR, the interpretation of the encoded value might change.
Define all the constants and helpers to interpret delay subfields both
in EMLSR and EMLMR mode.
Signed-off-by: Pablo Martin-Gomez <pmartin-gomez@freebox.fr>
Link: https://patch.msgid.link/20260410170429.343617-4-pmartin-gomez@freebox.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In Table 9-417m of 802.11be-2024, Transition Timeout is defined up
to value 10 for a Transition Timeout of 64TUs. The value 11 is reserved
and does not correspond to a Transition Timeout of 128TUs.
Signed-off-by: Pablo Martin-Gomez <pmartin-gomez@freebox.fr>
Link: https://patch.msgid.link/20260410170429.343617-2-pmartin-gomez@freebox.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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coreboot_table_populate() iterates over firmware-provided table entries
with no validation that the entries stay within the mapped memory
region. A corrupt table with a large `entry->size` advances `ptr_entry`
past the mapped region, causing an out-of-bounds read on the next
iteration.
Add a check before dereferencing `ptr_entry` to ensure the entry header
is readable, and a second check after reading `entry->size` to ensure
the full entry stays within the mapped region.
Pass `len` from coreboot_table_probe() into coreboot_table_populate() to
make the mapped region size available for validation.
Signed-off-by: Titouan Ameline de Cadeville <titouan.ameline@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Link: https://lore.kernel.org/r/20260426214739.117131-1-titouan.ameline@gmail.com
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
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Some physical adapters on Power systems do not support segmentation
offload when the MSS is less than 224 bytes. Attempting to send such
packets causes the adapter to freeze, stopping all traffic until
manually reset.
Implement ndo_features_check to disable GSO for packets with small MSS
values. The network stack will perform software segmentation instead.
The 224-byte minimum matches ibmvnic
commit <f10b09ef687f> ("ibmvnic: Enforce stronger sanity checks
on GSO packets")
which uses the same physical adapters in SEA configurations.
The issue occurs specifically when the hardware attempts to perform
segmentation (gso_segs > 1) with a small MSS. Single-segment GSO packets
(gso_segs == 1) do not trigger the problematic LSO code path and are
transmitted normally without segmentation.
Add an ndo_features_check callback to disable GSO when MSS < 224 bytes.
Also call vlan_features_check() to ensure proper handling of VLAN packets,
particularly QinQ (802.1ad) configurations where the hardware parser may
not support certain offload features.
Validated using iptables to force small MSS values. Without the fix,
the adapter freezes. With the fix, packets are segmented in software
and transmission succeeds. Comprehensive regression testing completedd
(MSS tests, performance, stability).
Fixes: 8641dd85799f ("ibmveth: Add support for TSO")
Cc: stable@vger.kernel.org
Reviewed-by: Brian King <bjking1@linux.ibm.com>
Tested-by: Shaik Abdulla <shaik.abdulla1@ibm.com>
Tested-by: Naveed Ahmed <naveedaus@in.ibm.com>
Signed-off-by: Mingming Cao <mmc@linux.ibm.com>
Link: https://patch.msgid.link/20260424162917.65725-1-mmc@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"XSA-485 and XSA-487 security patches"
* tag 'xsa48x-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/privcmd: fix double free via VMA splitting
Buffer overflow in drivers/xen/sys-hypervisor.c
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The main channel Received Signal Strength Indicator (RSSI) measurement
is used to determine whether an RF field is present or not. RSSI != 0
is interpreted as an RF Field is present. This does not take RF noise
and measurement inaccuracy into account, and results in false positives
in the field.
Define a noise level and make sure the RF field is only interpreted as
present when the RSSI is above the noise level.
Fixes: 851ee3cbf850 ("NFC: trf7970a: Don't turn on RF if there is already an RF field")
Signed-off-by: Paul Geurts <paul.geurts@prodrive-technologies.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Link: https://patch.msgid.link/20260422100930.581237-1-paul.geurts@prodrive-technologies.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Move init_completion(&spisg->completion) to before devm_request_irq()
to avoid a potential race condition where an interrupt could fire
before the completion structure is initialized.
Fixes: cef9991e04ae ("spi: Add Amlogic SPISG driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Link: https://patch.msgid.link/20260428-amlogic-spisg-v1-1-8eecc3b446d6@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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When rtl8150_start_xmit() fails to submit the tx URB, the URB is never
handed to the USB core and write_bulk_callback() will not run. The
driver returns NETDEV_TX_OK, which tells the networking stack that the
skb has been consumed, but nothing actually frees the skb on this
error path:
dev->tx_skb = skb;
...
if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
...
/* no kfree_skb here */
}
return NETDEV_TX_OK;
This leaks the skb on every submit failure and also leaves dev->tx_skb
pointing at memory that the driver itself may later free, which is
fragile.
Free the skb with dev_kfree_skb_any() in the error path and clear
dev->tx_skb so no stale pointer is left behind.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Morduan Zang <zhangdandan@uniontech.com>
Link: https://patch.msgid.link/E7D3E1C013C5A859+20260424015517.9574-1-zhangdandan@uniontech.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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syzbot reported a KASAN slab-use-after-free read in rtl8150_start_xmit()
when accessing skb->len for tx statistics after usb_submit_urb() has
been called:
BUG: KASAN: slab-use-after-free in rtl8150_start_xmit+0x71f/0x760
drivers/net/usb/rtl8150.c:712
Read of size 4 at addr ffff88810eb7a930 by task kworker/0:4/5226
The URB completion handler write_bulk_callback() frees the skb via
dev_kfree_skb_irq(dev->tx_skb). The URB may complete on another CPU
in softirq context before usb_submit_urb() returns in the submitter,
so by the time the submitter reads skb->len the skb has already been
queued to the per-CPU completion_queue and freed by net_tx_action():
CPU A (xmit) CPU B (USB completion softirq)
------------ ------------------------------
dev->tx_skb = skb;
usb_submit_urb() --+
|-------> write_bulk_callback()
| dev_kfree_skb_irq(dev->tx_skb)
| net_tx_action()
| napi_skb_cache_put() <-- free
netdev->stats.tx_bytes |
+= skb->len; <-- UAF read
Fix it by caching skb->len before submitting the URB and using the
cached value when updating the tx_bytes counter.
The pre-existing tx_bytes semantics are preserved: the counter tracks
the original frame length (skb->len), not the ETH_ZLEN/USB-alignment
padded "count" value that is handed to the device. Changing that
would be a user-visible accounting change and is out of scope for
this UAF fix.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot+3f46c095ac0ca048cb71@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/69e69ee7.050a0220.24bfd3.002b.GAE@google.com/
Closes: https://syzkaller.appspot.com/bug?extid=3f46c095ac0ca048cb71
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Zhan Jun <zhanjun@uniontech.com>
Link: https://patch.msgid.link/809895186B866C10+20260423004913.136655-1-zhangdandan@uniontech.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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RCU readers that identified a net device as a VRF port using
netif_is_l3_slave() assume that a subsequent call to
netdev_master_upper_dev_get_rcu() will return a VRF device. They then
continue to dereference its l3mdev operations.
This assumption is not always correct and can result in a NPD [1]. There
is no RCU synchronization when removing a port from a VRF, so it is
possible for an RCU reader to see a new master device (e.g., a bridge)
that does not have l3mdev operations.
Fix by adding RCU synchronization after clearing the IFF_L3MDEV_SLAVE
flag. Skip this synchronization when a net device is removed from a VRF
as part of its deletion and when the VRF device itself is deleted. In
the latter case an RCU grace period will pass by the time RTNL is
released.
[1]
BUG: kernel NULL pointer dereference, address: 0000000000000000
[...]
RIP: 0010:l3mdev_fib_table_rcu (net/l3mdev/l3mdev.c:181)
[...]
Call Trace:
<TASK>
l3mdev_fib_table_by_index (net/l3mdev/l3mdev.c:201 net/l3mdev/l3mdev.c:189)
__inet_bind (net/ipv4/af_inet.c:499 (discriminator 3))
inet_bind_sk (net/ipv4/af_inet.c:469)
__sys_bind (./include/linux/file.h:62 (discriminator 1) ./include/linux/file.h:83 (discriminator 1) net/socket.c:1951 (discriminator 1))
__x64_sys_bind (net/socket.c:1969 (discriminator 1) net/socket.c:1967 (discriminator 1) net/socket.c:1967 (discriminator 1))
do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
Fixes: fdeea7be88b1 ("net: vrf: Set slave's private flag before linking")
Reported-by: Haoze Xie <royenheart@gmail.com>
Reported-by: Yifan Wu <yifanwucs@gmail.com>
Reported-by: Juefei Pu <tomapufckgml@gmail.com>
Reported-by: Yuan Tan <yuantan098@gmail.com>
Closes: https://lore.kernel.org/netdev/20260419145332.3988923-1-n05ec@lzu.edu.cn/
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260423063607.1208202-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The transmit loop in airoha_dev_xmit() reads fragment address and length
during its final iteration, when the loop index equals
skb_shinfo(skb)->nr_frags, at which point the fragment data is
uninitialized. While these values are never consumed, the read itself is
unsafe and may trigger a page fault. Fix this by avoiding the fragment
read on the last iteration.
Additionally, move the skb pointer from the first to the last used packet
descriptor, so that airoha_qdma_tx_napi_poll() defers freeing the skb
until the final descriptor is processed.
Fixes: 23020f0493270 ("net: airoha: Introduce ethernet support for EN7581 SoC")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260424-airoha-xmit-fix-read-frag-v1-1-fdc0a83c79e8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Do not wake every netdev TX queue across all ports sharing the QDMA
running netif_tx_wake_all_queues routine in airoha_qdma_wake_netdev_txqs()
but only the ones that are mapped the specific QDMA stopped hw TX queue.
This patch can potentially avoid waking already stopped netdev TX queues
that are mapped to a different QDMA hw TX queue.
Introduce airoha_qdma_get_txq utility routine.
Fixes: b94769eb2f30 ("net: airoha: Fix possible TX queue stall in airoha_qdma_tx_napi_poll()")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260421-airoha-wake_netdev_txqs-optmization-v1-1-e0be95115d53@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Currently, airoha_eth driver updates the CPU index register prior of
verifying whether the number of free descriptors has fallen below the
threshold.
Move net_device TX queue length check before updating the TX CPU index
in order to update TX CPU index even if there are more packets to be
transmitted but the net_device TX queue is going to be stopped
accounting the inflight packets.
Fixes: 1d304174106c ("net: airoha: Implement BQL support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260421-airoha-xmit-stop-condition-v1-1-e670d6a48467@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Fix a possible BQL imbalance in airoha_dev_xmit(), where inflight
packets are accounted only for the AIROHA_NUM_TX_RING netdev TX
queues. The queue index is computed as:
qid = skb_get_queue_mapping(skb) % ARRAY_SIZE(qdma->q_tx)
txq = netdev_get_tx_queue(dev, qid);
However, airoha_qdma_tx_napi_poll() accounts completions across all
netdev TX queues (num_tx_queues), leading to inconsistent BQL
accounting.
Also reset all netdev TX queues in the ndo_stop callback.
Fixes: 1d304174106c ("net: airoha: Implement BQL support")
Fixes: c9f947769b77 ("net: airoha: Reset BQL stopping the netdevice")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260421-airoha-fix-bql-v1-1-f135afe4275b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Syzbot reports a KMSAN uninit-value originating from
nsim_dev_trap_skb_build, with the allocation also
being performed in the same function.
Fix this by calling skb_put_zero instead of skb_put to
guarantee zero initialization of the whole IP header.
Closes: https://syzkaller.appspot.com/bug?extid=23d7fcd204e3837866ff
Fixes: da58f90f11f5 ("netdevsim: Add devlink-trap support")
Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260426201434.742030-1-zlatistiv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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ax_spi_fill_tx_fifo() can be called from ax_spi_irq() which is a hard
irq handler. Replace usleep_range(10, 10) with udelay(10) in atomic
context.
Fixes: e75a6b00ad79 ("spi: axiado: Add driver for Axiado SPI DB controller")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Link: https://patch.msgid.link/20260428-axiado-v1-1-cd767500af72@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mikulas Patocka:
- fix metadata corruption in dm-thin
* tag 'for-7.1/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm-thin: fix metadata refcount underflow
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Add support for PMAU0102 PMIC voltage regulators which are present on
Nord boards.
Signed-off-by: Kamal Wadhwa <kamal.wadhwa@oss.qualcomm.com>
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://patch.msgid.link/20260427011159.230698-3-shengchao.guo@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The WSA881x codec driver has a local workaround for old device
trees that have the "powerdown" GPIO flagged as active high,
despite it is active low.
This quirk can be replaced by a single quirk entry in
gpiolib-of.c
Drop all polarity inversion code and drop the surplus
gpiod_direction_output() call in probe() since we now set up
the line correctly when getting the GPIO.
Also drop the inclusion of the unused <linux/gpio.h>.
Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260427-asoc-wsa881x-v2-1-9ef965f94624@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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If a bus has hotplug slots that implement the slot's reset_slot callback,
it is not safe to do the non-slot specific bus reset, so don't fallback to
it. If a slot reset does fail, the subsequent bus reset will attempt a 2nd
link reset on top of previous and fail to handle the hotplug events.
Fixes: 8238cb69c01fe ("PCI: Make reset_subordinate hotplug safe")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260421150644.3543733-1-kbusch@meta.com
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git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox
Pull mailbox updates from Jassi Brar:
- core: fix NULL message handling and add API to query TX queue slots
- test: resolve concurrency bugs, dangling IRQs, and memory leaks
- dt-bindings: qcom: add Eliza IPCC
- mtk: fix address calculation and pointer handling bugs
- cix: resolve SCMI suspend timeouts
- misc memory allocation optimizations and cleanups
* tag 'mailbox-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox:
mailbox: mailbox-test: make data_ready a per-instance variable
mailbox: mailbox-test: initialize struct earlier
mailbox: mailbox-test: don't free the reused channel
mailbox: mailbox-test: handle channel errors consistently
mailbox: update kdoc for struct mbox_controller
mailbox: add sanity check for channel array
mailbox: mailbox-test: free channels on probe error
mailbox: prefix new constants with MBOX_
dt-bindings: mailbox: qcom-ipcc: Document the Eliza Inter-Processor Communication Controller
mailbox: cix: Add IRQF_NO_SUSPEND to mailbox interrupt
mailbox: Fix NULL message support in mbox_send_message()
mailbox: remove superfluous internal header
mailbox: correct kdoc title for mbox_bind_client
mailbox: test: really ignore optional memory resources
mailbox: exynos: drop superfluous mbox setting per channel
mailbox: mtk-cmdq: Fix CURR and END addr for task insert case
mailbox: mtk-vcp-mailbox: Fix the return value in mtk_vcp_mbox_xlate()
mailbox: hi6220: kzalloc + kcalloc to kzalloc
mailbox: rockchip: kzalloc + kcalloc to kzalloc
mailbox: add API to query available TX queue slots
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xe_gt_suspend_prepare() doesn't perform any MMIO operation that requires
forcewake in it's code path. Drop it.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>$
Link: https://patch.msgid.link/20260427092928.1181893-4-raag.jadav@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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xe_guc_pc_stop() doesn't perform any MMIO operation that requires
forcewake in it's code path. Move it before pc_set_cur_freq() which
writes to RPNSWREQ and actually requires it.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20260427092928.1181893-3-raag.jadav@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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xe_guc_pc_stop() doesn't return any meaningful value. Refactor it into
void function.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20260427092928.1181893-2-raag.jadav@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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The cdrom core never calls set_disk_ro() for a registered device, so
BLKROGET on a CD-ROM device always returns 0 (writable), even when the
drive has no write capabilities and writes will inevitably fail. This
causes problems for userspace that relies on BLKROGET to determine
whether a block device is read-only. For example, systemd's loop device
setup uses BLKROGET to decide whether to create a loop device with
LO_FLAGS_READ_ONLY. Without the read-only flag, writes pass through the
loop device to the CD-ROM and fail with I/O errors. systemd-fsck
similarly checks BLKROGET to decide whether to run fsck in no-repair
mode (-n).
The write-capability bits in cdi->mask come from two different sources:
CDC_DVD_RAM and CDC_CD_RW are populated by the driver from the MODE
SENSE capabilities page (page 0x2A) before register_cdrom() is called,
while CDC_MRW_W and CDC_RAM require the MMC GET CONFIGURATION command
and were only probed by cdrom_open_write() at device open time. This
meant that any attempt to compute the writable state from the full
mask at probe time was incorrect, because the GET CONFIGURATION bits
were still unset (and cdi->mask is initialized such that capabilities
are assumed present).
Fix this by factoring the GET CONFIGURATION probing out of
cdrom_open_write() into a new exported helper,
cdrom_probe_write_features(), and having sr call it from sr_probe()
right after get_capabilities() has populated the MODE SENSE bits.
register_cdrom() then calls set_disk_ro() based on the full
write-capability mask (CDC_DVD_RAM | CDC_MRW_W | CDC_RAM | CDC_CD_RW)
so the block layer reflects the drive's actual write support. The
feature queries used (CDF_MRW and CDF_RWRT via GET CONFIGURATION with
RT=00) report drive-level capabilities that are persistent across
media, so a single probe before register_cdrom() is sufficient and the
redundant probe at open time is dropped.
With set_disk_ro() now accurate, the long-vestigial cd->writeable flag
in sr can go: get_capabilities() used to set cd->writeable based on
the same four mask bits, but because CDC_MRW_W and CDC_RAM default to
"capability present" in cdi->mask and aren't touched by MODE SENSE,
the condition that gated cd->writeable was always true, making it
unconditionally 1. Replace the corresponding gate in sr_init_command()
with get_disk_ro(cd->disk), which turns a previously no-op check into
a real one and also catches kernel-internal bio writers that bypass
blkdev_write_iter()'s bdev_read_only() check.
The sd driver (SCSI disks) does not have this problem because it
checks the MODE SENSE Write Protect bit and calls set_disk_ro()
accordingly. The sr driver cannot use the same approach because the
MMC specification does not define the WP bit in the MODE SENSE
device-specific parameter byte for CD-ROM devices.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Daan De Meyer <daan@amutable.com>
Reviewed-by: Phillip Potter <phil@philpotter.co.uk>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://patch.msgid.link/20260427210139.1400-2-phil@philpotter.co.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull NVMe fixes from Keith:
"- Target data transfer size confiruation (Aurelien)
- Enable P2P for RDMA (Shivaji Kant)
- TCP target updates (Maurizio, Alistair, Chaitanya, Shivam Kumar)
- TCP host updates (Alistair, Chaitanya)
- Authentication updates (Alistair, Daniel, Chris Leech)
- Multipath fixes (John Garry)
- New quirks (Alan Cui, Tao Jiang)
- Apple driver fix (Fedor Pchelkin)
- PCI admin doorbell update fix (Keith)"
* tag 'nvme-7.1-2026-04-24' of git://git.infradead.org/nvme: (22 commits)
nvme-auth: Hash DH shared secret to create session key
nvme-pci: fix missed admin queue sq doorbell write
nvme-auth: Include SC_C in RVAL controller hash
nvme-tcp: teardown circular locking fixes
nvmet-tcp: Don't clear tls_key when freeing sq
Revert "nvmet-tcp: Don't free SQ on authentication success"
nvme: skip trace completion for host path errors
nvme-pci: add quirk for Memblaze Pblaze5 (0x1c5f:0x0555)
nvme-multipath: put module reference when delayed removal work is canceled
nvme: expose TLS mode
nvme-apple: drop invalid put of admin queue reference count
nvme-core: fix parameter name in comment
nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free
nvme-multipath: drop head pointer check in nvme_mpath_clear_current_path()
nvme: add quirk NVME_QUIRK_IGNORE_DEV_SUBNQN for 144d:a808 (Samsung PM981/983/970 EVO Plus )
nvmet-tcp: fix race between ICReq handling and queue teardown
nvmet-tcp: remove redundant calls to nvmet_tcp_fatal_error()
nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
nvme: enable PCI P2PDMA support for RDMA transport
nvmet: introduce new mdts configuration entry
...
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On all platforms supported by the Xe driver, BCS engines are part of the
GT forcewake domain, not the RENDER domain. Fix the engine list
definition to match the spec. This mistake didn't really cause any
real problems because the forcewake domain here was only used in a
couple assertions that aren't really necessary and included in the
information dumped during error capture.
Bspec: 66696, 66534, 67609, 71185, 74417, 75242, 78286
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-10-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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xe_hw_engine_mmio_write32() is only used in a single place and is easily
replaced by a regular xe_mmio_write32() call. Register read/write
interfaces are already complicated enough with MCR vs non-MCR handling,
so we should avoid adding extra wrappers that just make it more
confusing what to use.
xe_hw_engine_mmio_write32() did have a forcewake assertion that we're
dropping here, but that assertion wasn't entirely correct anyway. It was
checking hwe->domain which is currently set to XE_FW_RENDER for the BCS
engine, even though BCS engines reside in the GT domain.
v2:
- Drop prototype in header file as well. (Shuicheng)
Cc: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-9-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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The STOP_RING bit in MI_MODE is already clear by default out of hardware
reset and will only be '1' if the driver intentionally sets it after
that.
The logic of clearing this bit appears to originate from very
early (pre-GuC, pre-execlist) code in i915 where we needed to stop the
ring before performing a host-initiated engine reset; after the reset
the STOP_RING bit needed to be cleared to allow execution to resume.
None of that is relevant to Xe (or even modern i915) since STOP_RING
isn't necessary for execlist-based engine resets (and even if it were,
Xe doesn't initiate any engine resets; the GuC handles that now).
Bspec: 60356, 60184
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-8-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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The write GFX_MODE to disable engine "legacy mode" and to enable MSI-X
support was unnecessarily open-coded in xe_hw_engine_enable_ring();
it's preferable to do such programming in the engine_entries[] RTP table
since gets reflected/verified in debugfs, and will also automatically
ensure that the register is properly saved/restored around engine
resets. This also helps consolidate common logic that was duplicated
between the main driver initialization path and the dead-code execlist
initialization path.
This also allows us to drop GFX_MODE from the list of extra registers to
be added to the GuC ADS' save-restore list since all registers on the
RTP table are added automatically.
v2:
- Actually use the xe_rtp_match_has_msix match function added.
(Shuicheng)
Cc: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-7-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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None of these functions modify the Xe device parameter, and marking it
as const will avoid warnings when the callsite wants to pass a const
pointer.
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-6-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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The register located at $base+0x29c is referred to as GFX_MODE in the
bspec. Although many other registers have RING_* prefixes for
historical reasons, this register does not, so using a name that does
not match the bspec just makes it harder to recognize/find.
Also, GFX_MODE is a masked register (updating bits [15:0] requires that
the corresponding bit(s) in [31:16] are also set), so add the
XE_REG_OPTION_MASKED flag to the register definition; this will become
important when we start programming this register via RTP tables in a
future patch.
Finally swap the order of the register's two bit definitions to match
our regular coding style of descending order for register bits/fields.
Bspec: 45928
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-5-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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The write to RING_HWSTAM to disable hardware status page writes on
interrupt was unnecessarily open-coded in xe_hw_engine_enable_ring();
it's preferable to do such programming in the engine_entries[] RTP table
since gets reflected/verified in debugfs, and will also automatically
ensure that the register is properly saved/restored around engine
resets.
In this case the HWSTAM register wasn't explicitly added to the GuC ADS'
save-restore list, so there was the potential for the value to be lost
on engine resets. This doesn't seem to have happened in practice, so
likely the GuC firmware is automatically saving/restoring this register
on our behalf, but we shouldn't rely on this implicit behavior going
forward.
One other slight change with this patch is that HWSTAM will now be
programmed on the vestigial execlist (non-GuC) initialization path.
Since the register's default value is 0x0 and the documentation
indicates that it's only legal to leave a single bit unmasked at a time,
this likely would have been an illegal situation if the execlist code
were actually usable.
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-4-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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Xe1 platforms used the BLIT_CCTL register to specify the MOCS value that
would be used for BCS engine instructions that did not have a way of
specifying a MOCS index directly. From Xe2 onward, all BCS instructions
now have explicit instruction fields for specifying a MOCS index and the
BLIT_CCTL register is now a dummy register with no valid fields.
Although continuing to write to it today has no effect, the register
could repurposed in future platforms, so restrict the BLIT_CCTL RTP
entry to only apply to Xe1 platforms.
Bspec: 60280
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-3-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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All RTP table entries are required to have at least one rule. In cases
where an entry should apply unconditionally across all platforms we've
been using a graphics version range of 12.00 - forever since this covers
all platforms supported by the driver. However if the primary GT is
disabled via configfs (not actually possible today, but probably
possible in the future) or if we have a future platform that lacks a
primary GT and only supports media/display, this rule would cause
important programming to fail to apply on the media GT.
Add a simple match function that just always returns true
unconditionally. This solves the worries above while also being more
immediately human-readable.
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-2-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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Most register programming for engine setup happens via RTP tables in
hw_engine_setup_default_state(). Move the programming of RCU_MODE[0]
which enables the platform's CCS engine(s) there. This both makes the
code more consistent (other RCU_MODE register programming is already
happening in this RTP table) and improves debuggability (since RTP
contents and checks of their correct programming are exposed via
debugfs). It also helps consolidate the regular driver initialization
paths with the vestigial and currently unused execlist (i.e., non-GuC)
initialization.
With the original programming, the RCU_MODE register (which is a single
global register, not a per-engine register) was getting re-programmed
with the same value during the initialization of each CCS engine. When
moved to the RTP table, we use the xe_rtp_match_first_render_or_compute
match function so that it will just be programmed once, while doing the
initialization for the first RCS/CCS engine, which avoids the redundant
and unnecessary repetition.
We can also safely drop the explicit addition of RCU_MODE from the GuC
ADS save-restore list now since all registers programmed via RTP tables
are automatically added to the GuC's list.
v2:
- Only enable CCS engines on Xe_HP and later. Even though Xe_LP
platforms technically have a CCS engine, it's never been enabled on
i915 or Xe due to other issues on these old platforms.
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260424-engine-setup-v2-1-59cc620a25f1@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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The HP OMEN 16 Gaming Laptop (board name 8A44) has a mux-less hybrid
GPU configuration with AMD Rembrandt (Radeon 680M) and NVIDIA GA104
(RTX 3070 Ti). The internal eDP panel is wired to the AMD iGPU.
When Nouveau loads without GSP firmware, the ACPI video backlight
device (acpi_video0) gets registered alongside the native AMD
backlight (amdgpu_bl2). In this state, writes to amdgpu_bl2 update
the software brightness value but fail to change the physical panel
brightness.
Force native backlight to prevent acpi_video0 from registering.
Confirmed that booting with acpi_backlight=native resolves the
issue.
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Shivam Kalra <shivamkalra98@zohomail.in>
Link: https://patch.msgid.link/20260426-omen-16-backlight-fix-v1-1-62364f268ea6@zohomail.in
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Fix grammar in the comment preceding the pm_runtime_set_active() call in
acpi_tad_probe().
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/8678306.T7Z3S40VBb@rafael.j.wysocki
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Since rtc_tm_to_ktime() may overflow for large RTC time values and
full second granularity is sufficient in timer value computations
in acpi_tad_rtc_set_alarm() and acpi_tad_rtc_read_alarm(), use
rtc_tm_to_time64() instead of that function, which also allows the
computations to be simplified.
Moreover, U32_MAX is a special "timer disabled" value, so make
acpi_tad_rtc_set_alarm() reject it when attempting to program the
alarm timers.
Fixes: 7572dcabe38d ("ACPI: TAD: Add alarm support to the RTC class device interface")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://patch.msgid.link/3414608.aeNJFYEL58@rafael.j.wysocki
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The code in acpi_tad_remove() needs to run after the unregistration of
the devres-managed RTC class device so that it doesn't race with the
class callbacks of the latter.
To make that happen, pass it to devm_add_action_or_reset() before
registering the RTC class device.
Fixes: 7572dcabe38d ("ACPI: TAD: Add alarm support to the RTC class device interface")
Fixes: 8a1e7f4b1764 ("ACPI: TAD: Add RTC class device interface")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/14001754.uLZWGnKmhe@rafael.j.wysocki
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Recent commit 93afe8ba9b01 ("ACPI: TAD: Use dev_groups in struct
device_driver") switched over the ACPI TAD driver to using device
attribute groups instead of creating and removing the device sysfs
attributes directly, but it might go one step farther and use the
__ATTRIBUTE_GROUPS() macro which would reduce the code size slightly.
Do it now.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[ rjw: Fixed typo in the changelog ]
Link: https://patch.msgid.link/1961102.tdWV9SEqCh@rafael.j.wysocki
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When concurrently bringing up and down two SMT threads of a physical
core, many warning call traces occur as below:
The issue timeline is as follows:
1. When the system starts,
cpufreq: CPU: 220, policy->related_cpus: 220-221, policy->cpus: 220-221
2. Offline CPU 220 and CPU 221.
3. Online CPU 220
- CPU 221 is now offline, as acpi_get_psd_map() use
for_each_online_cpu(), so the cpu_data->shared_cpu_map,
policy->cpus, and related_cpus has only CPU 220.
cpufreq: CPU: 220, policy->related_cpus: 220, policy->cpus: 220
4. Offline CPU 220
5. Online CPU 221, the below call trace occurs:
- Since CPU 220 and CPU 221 share one policy, and
policy->related_cpus = 220 after step 3, so CPU 221
is not in policy->related_cpus but
per_cpu(cpufreq_cpu_data, cpu221) is not NULL.
After reverting commit 56eb0c0ed345 ("ACPI: CPPC: Fix remaining
for_each_possible_cpu() to use online CPUs"), the issue disappeared.
The _PSD (P-State Dependency) defines the hardware-level dependency of
frequency control across CPU cores. Since this relationship is a physical
attribute of the hardware topology, it remains constant regardless of the
online or offline status of the CPUs.
Using for_each_online_cpu() in acpi_get_psd_map() is problematic. If a
CPU is offline, it will be excluded from the shared_cpu_map.
Consequently, if that CPU is brought online later, the kernel will fail
to recognize it as part of any shared frequency domain.
Switch back to for_each_possible_cpu() to ensure that all cores defined
in the ACPI tables are correctly mapped into their respective performance
domains from the start. This aligns with the logic of policy->related_cpus,
which must encompass all potentially available cores in the domain to
prevent logic gaps during CPU hotplug operations.
To resolve the original issue regarding the "nosmt" or "nosmt=force"
boot parameter, as send_pcc_cmd() function already does if (!desc)
continue, so reverting that loop back to for_each_possible_cpu() is ok,
only need to change the match_cpc_ptr NULL case in acpi_get_psd_map() to
continue as Sean suggested.
How to reproduce, on arm64 machine with SMT support which use acpi cppc
cpufreq driver:
bash test.sh 220 & bash test.sh 221 &
The test.sh is as below:
while true
do
echo 0 > /sys/devices/system/cpu/cpu${1}/online
sleep 0.5
cat /sys/devices/system/cpu/cpu${1}/cpufreq/related_cpus
echo 1 > /sys/devices/system/cpu/cpu${1}/online
cat /sys/devices/system/cpu/cpu${1}/cpufreq/related_cpus
done
CPU: 221 PID: 1119 Comm: cpuhp/221 Kdump: loaded Not tainted 6.6.0debug+ #5
Hardware name: To be filled by O.E.M. S920X20/BC83AMDA01-7270Z, BIOS 20.39 09/04/2024
pstate: a1400009 (NzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : cpufreq_online+0x8ac/0xa90
lr : cpuhp_cpufreq_online+0x18/0x30
sp : ffff80008739bce0
x29: ffff80008739bce0 x28: 0000000000000000 x27: ffff28400ca32200
x26: 0000000000000000 x25: 0000000000000003 x24: ffffd483503ff000
x23: ffffd483504051a0 x22: ffffd48350024a00 x21: 00000000000000dd
x20: 000000000000001d x19: ffff28400ca32000 x18: 0000000000000000
x17: 0000000000000020 x16: ffffd4834e6a3fc8 x15: 0000000000000020
x14: 0000000000000008 x13: 0000000000000001 x12: 00000000ffffffff
x11: 0000000000000040 x10: ffffd48350430728 x9 : ffffd4834f087c78
x8 : 0000000000000001 x7 : ffff2840092bdf00 x6 : ffffd483504264f0
x5 : ffffd48350405000 x4 : ffff283f7f95cc60 x3 : 0000000000000000
x2 : ffff53bc2f94b000 x1 : 00000000000000dd x0 : 0000000000000000
Call trace:
cpufreq_online+0x8ac/0xa90
cpuhp_cpufreq_online+0x18/0x30
cpuhp_invoke_callback+0x128/0x580
cpuhp_thread_fun+0x110/0x1b0
smpboot_thread_fn+0x140/0x190
kthread+0xec/0x100
ret_from_fork+0x10/0x20
---[ end trace 0000000000000000 ]---
Cc: All applicable <stable@vger.kernel.org>
Fixes: 56eb0c0ed345 ("ACPI: CPPC: Fix remaining for_each_possible_cpu() to use online CPUs")
Co-developed-by: Sean Kelley <skelley@nvidia.com>
Signed-off-by: Sean Kelley <skelley@nvidia.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
[ rjw: Changelog edits ]
Link: https://patch.msgid.link/20260417040112.3727756-1-ruanjinjie@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Error types in EINJV2 use different bit positions for each flavor of
injection from legacy EINJ.
Two issues:
1) The address sanity checks in einj_error_inject() were skipped for
EINJV2 injections. Noted by sashiko[1]
2) __einj_error_trigger() failed to drop the entry of the target
physical address from the list of resources that need to be
requested.
Add a helper function that checks if an injection is to memory and use it
to solve each of these issues.
Note that the old test in __einj_error_trigger() checked that param2 was
not zero. This isn't needed because the sanity checks in einj_error_inject()
reject memory injections with param2 == 0.
Fixes: b47610296d17 ("ACPI: APEI: EINJ: Enable EINJv2 error injections")
Reported-by: sashiko <sashiko@sashiko.dev>
Reported-by: Herman Li <herman.li@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Tested-by: "Lai, Yi1" <yi1.lai@intel.com>
Link: https://sashiko.dev/#/patchset/20260415163620.12957-1-tony.luck%40intel.com # [1]
Reviewed-by: Jiaqi Yan <jiaqiyan@google.com>
Reviewed-by: Zaid Alali <zaidal@os.amperecomputing.com>
Link: https://patch.msgid.link/20260421150216.11666-3-tony.luck@intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Although the bspec currently indicates that steered reads/writes to L3
register ranges are never terminated for physically present instances
(regardless of fusing) on Xe2, it turns out this is information is
incorrect. The hardware architects have also confirmed that the current
documentation is wrong (or that possibly the wording was intended to be
interpreted in a different way), but have not yet provided an official
spec update.
All of our driver's writes to registers in these ranges are done as
multicast, so steering is not actually important to proper driver
operation; the only impact of this documentation mistake is that on some
fused-down SKUs where the first L3 bank is absent we're not able to
properly read back the values that were written to those registers to
confirm that the writes were applied correctly (e.g., when using the
register-save-restore-check debugfs interface).
Since we don't have an official spec update yet, let's assume that
Xe2/Xe3 use the same fuse => steering logic as Xe3p. I.e., remove
L3BANK and NODE register ranges from the "INSTANCE0" steering group and
add handle them with dedicated handling according to the L3 fuses. From
testing on various fused-down platforms this does appear to give proper
steering and fix the failures reported by IGT's
igt@xe_debugfs@check-gt-reg-sr test.
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7706
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://patch.msgid.link/20260421-xe2_l3bank_steering-v1-1-613158a27383@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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