MMC_SDHCI_ESDHC_IMX requires ARCH_MXC despite also being used on
ARCH_S32, which results in unmet dependencies when compiling strictly
for ARCH_S32. Resolve this by adding ARCH_S32 as an alternative to
ARCH_MXC in the driver's dependencies.
Fixes: 5c4f00627c ("mmc: sdhci-esdhc-imx: add NXP S32G2 support")
Cc: stable@bvger.kernel.org
Signed-off-by: Jared Kangas <jkangas@redhat.com>
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
On Xilinx/AMD platforms, the CD stable bit take slightly longer than
one second(about an additional 100ms) to assert after a host
controller reset. Although no functional failure observed with the
existing one second delay but to ensure reliable initialization, increase
the CD stable timeout to 2 seconds.
Fixes: e251709aad ("mmc: sdhci-of-arasan: Ensure CD logic stabilization before power-up")
Cc: stable@vger.kernel.org
Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Pull MMC updates from Ulf Hansson:
"MMC core:
- Allow more host caps to be modified through debugfs
- Skip to set the default 200mA SD current limit
MMC host:
- Convert a few more DT bindings to the DT schema
- dw_mmc: Add Shawn Lin as co-maintainer for the dw_mmc drivers
- dw_mmc-rockchip:
- Add memory clock auto-gating support
- Add support for the RK3506 variant
- meson-mx-sdio:
- Ignore disabled "mmc-slot" child-nodes
- Refactoring and general code improvements
- renesas_sdhi:
- Enable bigger data ports where available
- Manage reset in probe and during system-wide suspend/resume
- sdhci-brcmstb:
- Add support for the BCM72116 and BCM74371 variants
- Save/restore registers during system-wide suspend/resume
- sdhci-msm:
- Add support for the sm8750 and the Kaanapali variants
- Avoid early clock doubling during HS400 transition
- sdhci-of-dwcmshc:
- Add command queue support for Rockchip SOCs
- Add support for the Eswin EIC7700 variant"
* tag 'mmc-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (40 commits)
mmc: sdhci-of-dwcmshc: reduce CIT for better performance
mmc: sdhci-of-dwcmshc: Disable internal clock auto gate for Rockchip SOCs
mmc: sdhci-msm: Avoid early clock doubling during HS400 transition
MAINTAINERS: Add Shawn Lin as co-maintainer for dw_mmc drivers
mmc: sdhci-of-dwcmshc: Fix command queue support for RK3576
mmc: renesas_sdhi: Add suspend/resume hooks
mmc: renesas_sdhi: Switch to SYSTEM_SLEEP_PM_OPS()/RUNTIME_PM_OPS() and pm_ptr()
mmc: renesas_sdhi: Deassert the reset signal on probe
dt-bindings: mmc: am654: Simplify dma-coherent property
mmc: meson-mx-sdio: Ignore disabled "mmc-slot" child-nodes
mmc: meson-mx-sdio: Fix indentation in meson_mx_mmc_irq_thread()
mmc: meson-mx-sdio: Use dev_err_probe() where appropriate
mmc: meson-mx-sdio: Use devm_mmc_alloc_host() helper
mmc: meson-mx-sdio: Refactor internal clock initialization
mmc: meson-mx-sdio: Use devm_clk_get_enabled()
mmc: meson-mx-sdio: Switch to regmap for register access
mmc: core: add WQ_PERCPU to alloc_workqueue users
mmc: dw_mmc-rockchip: Add memory clock auto-gating support
mmc: omap: add WQ_PERCPU to alloc_workqueue users
mmc: mtk-sd: replace use of system_wq with system_percpu_wq
...
Pull printk updates from Petr Mladek:
- Allow creaing nbcon console drivers with an unsafe write_atomic()
callback that can only be called by the final nbcon_atomic_flush_unsafe().
Otherwise, the driver would rely on the kthread.
It is going to be used as the-best-effort approach for an
experimental nbcon netconsole driver, see
https://lore.kernel.org/r/20251121-nbcon-v1-2-503d17b2b4af@debian.org
Note that a safe .write_atomic() callback is supposed to work in NMI
context. But some networking drivers are not safe even in IRQ
context:
https://lore.kernel.org/r/oc46gdpmmlly5o44obvmoatfqo5bhpgv7pabpvb6sjuqioymcg@gjsma3ghoz35
In an ideal world, all networking drivers would be fixed first and
the atomic flush would be blocked only in NMI context. But it brings
the question how reliable networking drivers are when the system is
in a bad state. They might block flushing more reliable serial
consoles which are more suitable for serious debugging anyway.
- Allow to use the last 4 bytes of the printk ring buffer.
- Prevent queuing IRQ work and block printk kthreads when consoles are
suspended. Otherwise, they create non-necessary churn or even block
the suspend.
- Release console_lock() between each record in the kthread used for
legacy consoles on RT. It might significantly speed up the boot.
- Release nbcon context between each record in the atomic flush. It
prevents stalls of the related printk kthread after it has lost the
ownership in the middle of a record
- Add support for NBCON consoles into KDB
- Add %ptsP modifier for printing struct timespec64 and use it where
possible
- Misc code clean up
* tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (48 commits)
printk: Use console_is_usable on console_unblank
arch: um: kmsg_dump: Use console_is_usable
drivers: serial: kgdboc: Drop checks for CON_ENABLED and CON_BOOT
lib/vsprintf: Unify FORMAT_STATE_NUM handlers
printk: Avoid irq_work for printk_deferred() on suspend
printk: Avoid scheduling irq_work on suspend
printk: Allow printk_trigger_flush() to flush all types
tracing: Switch to use %ptSp
scsi: snic: Switch to use %ptSp
scsi: fnic: Switch to use %ptSp
s390/dasd: Switch to use %ptSp
ptp: ocp: Switch to use %ptSp
pps: Switch to use %ptSp
PCI: epf-test: Switch to use %ptSp
net: dsa: sja1105: Switch to use %ptSp
mmc: mmc_test: Switch to use %ptSp
media: av7110: Switch to use %ptSp
ipmi: Switch to use %ptSp
igb: Switch to use %ptSp
e1000e: Switch to use %ptSp
...
CQHCI_SSC1.CIT indicates to the CQE the polling period to use for
periodic SEND_QUEUE_STATUS (CMD13) polling. Some eMMCs have only one
hardware queue, and CMD13 can only query one slot at a time for data
transmission, which cannot be processed in parallel. Modifying the
CMD13 query interval can increase the query frequency and improve
random write performance.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Enabling CMDQ support can lead to random occurrences of the error log when
there are RPMB access and data flush executed:
"mmc2: Timeout waiting for hardware interrupt."
Enabling CMDQ and then issuing a DCMD as the final command before disabling
it causes the eMMC controller to auto-gate its internal clock. Chip simulation
shows this results in a state machine mismatch after CMDQ mode exit, triggering
data-timeout errors for all subsequent read and write operations.
Therefore, the auto-clock-gate function must be disabled whenever CMDQ is
enabled.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: fda1e0af7c ("mmc: sdhci-of-dwcmshc: Add command queue support for rockchip SOCs")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Merge the mmc fixes for v6.18-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.19.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit 27e8fe0da3 ("mmc: sdhci-of-dwcmshc: Prevent stale command
interrupt handling") clears pending interrupts when resetting
host->pending_reset to ensure no pending stale interrupts after
sdhci_threaded_irq restores interrupts. But this fix is only added for
th1520 platforms, in fact per my test, this issue exists on all
dwcmshc users, such as cv1800b, sg2002, and synaptics platforms.
So promote the above reset handling from th1520 to ip level. And keep
reset handling on rk, sg2042 and bf3 as is, until it's confirmed that
the same issue exists on these platforms too.
Fixes: 017199c284 ("mmc: sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
According to the hardware programming guide, the clock frequency must
remain below 52MHz during the transition to HS400 mode.
However,in the current implementation, the timing is set to HS400 (a
DDR mode) before adjusting the clock. This causes the clock to double
prematurely to 104MHz during the transition phase, violating the
specification and potentially resulting in CRC errors or CMD timeouts.
This change ensures that clock doubling is avoided during intermediate
transitions and is applied only when the card requires a 200MHz clock
for HS400 operation.
Signed-off-by: Sarthak Garg <sarthak.garg@oss.qualcomm.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When I added command queue engine (CQE) support for the Rockchip eMMC
controller, I missed that RK3576 has a separate platform data struct.
While things are working fine on RK3588 (I tested the ROCK 5B) and
the suspend issue is fixed on the RK3576 (I tested the Sige5), this
results in stability issues. By also adding the necessary hooks for
the RK3576 platform the following problems can be avoided:
[ 15.606895] mmc0: running CQE recovery
[ 15.616189] mmc0: running CQE recovery
[...]
[ 25.911484] mmc0: running CQE recovery
[ 25.926305] mmc0: running CQE recovery
[ 25.927468] mmc0: running CQE recovery
[...]
[ 26.255719] mmc0: running CQE recovery
[ 26.257162] ------------[ cut here ]------------
[ 26.257581] mmc0: cqhci: spurious TCN for tag 31
[ 26.258034] WARNING: CPU: 0 PID: 0 at drivers/mmc/host/cqhci-core.c:796 cqhci_irq+0x440/0x68c
[ 26.263786] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.18.0-rc6-gd984ebbf0d15 #1 PREEMPT
[ 26.264561] Hardware name: ArmSoM Sige5 (DT)
[...]
[ 26.272748] Call trace:
[ 26.272964] cqhci_irq+0x440/0x68c (P)
[ 26.273296] dwcmshc_cqe_irq_handler+0x54/0x88
[ 26.273689] sdhci_irq+0xbc/0x1200
[ 26.273991] __handle_irq_event_percpu+0x54/0x1d0
[...]
Note that the above problems do not necessarily happen with every boot.
Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Closes: https://lore.kernel.org/linux-rockchip/01949bc9-4873-498b-ac7d-f008393ccc4c@intel.com/
Fixes: fda1e0af7c ("mmc: sdhci-of-dwcmshc: Add command queue support for rockchip SOCs")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add suspend/resume hooks which assert/deassert the reset signals, along
with forcing runtime suspend/resume. This allows using the driver in
scenarios where the resume is done with the help of bootloader and the
bootloader disables the SDHI clocks, resets, IRQs before passing execution
to Linux.
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
SET_SYSTEM_SLEEP_PM_OPS() and SET_RUNTIME_PM_OPS() require __maybe_unused
or #ifdefs protection against unused function warnings. The usage of
pm_ptr() and SYSTEM_SLEEP_PM_OPS()/RUNTIME_PM_OPS() allows the compiler to
see the functions, thus suppressing the warning. Drop the #ifdefs.
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The meson-mx-sdio (and mmc core) only support one MMC/SD/SDIO slot
(device) per host. Thus having multiple mmc-slot nodes (one for the up
to three supported slots with one device each on the meson-mx-sdio
hardware) can be problematic.
Allow specifying all slots (with their respective device) connected to
the meson-mx-sdio hardware in device-tree, while making sure that only
the enabled one(s) are actually considered by the driver.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Use modern common clock framework helpers for simplifying the clock
controller management:
- switch to struct clk_hw for internal clocks and only get the
"cfg_div_clk" (which has to be managed at runtime) as struct clk
using devm_clk_hw_get_clk() which is then the only clock used by
struct meson_mx_mmc_host.
- use CLK_HW_INIT_FW_NAME and CLK_HW_INIT_HW helper macros for simpler
init data initialization
- keep the clock controller memory allocation separate to prevent a
potential use-after-free because struct meson_mx_mmc_host_clkc is
free'd before controller_dev
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Switch the driver over to use regmap to access the registers. This makes
it consistent with the other Amlogic MMC drivers. No functional changes
intended.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.
This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
This change adds a new WQ_PERCPU flag to explicitly request
alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.
Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Per design recommendations, the memory clock can be gated when there
is no in-flight transfer, which helps save power. This feature is
introduced alongside internal phase support, and this patch enables it.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Merge the mmc fixes for v6.18-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.19.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.
This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
This change adds a new WQ_PERCPU flag to explicitly request
alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.
Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
This patch continues the effort to refactor worqueue APIs, which has begun
with the change introducing new workqueues and a new alloc_workqueue flag:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
Replace system_wq with system_percpu_wq, keeping the same old behavior.
The old wq (system_wq) will be kept for a few release cycles.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
ciu clock is 2 times of io clock, but the sample clk used is
derived from io clock provided to the card. So we should use
io clock to calculate the phase.
Fixes: 59903441f5 ("mmc: dw_mmc-rockchip: Add internal phase support")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This adds CQE support for the Rockchip RK3588 and RK3576 platform. To
be functional, the eMMC device-tree node must have a 'supports-cqe;'
flag property.
As the RK3576 device-tree has been upstreamed with the 'supports-cqe;'
property set by default, the kernel already tried to use CQE, which
results in system hang during suspend. This fixes the issue.
Co-developed-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add support for the mmc controller in the Eswin EIC7700 with the new
compatible "eswin,eic7700-dwcmshc". Implement custom sdhci_ops for
set_clock, reset, set_uhs_signaling, platform_execute_tuning.
Signed-off-by: Huan He <hehuan1@eswincomputing.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Let's avoid updating the SD current limit when the maximum power is 200mA
(0.72W) or less, as this is already the default value for the SD card. In
this way we avoid sending an unnecessary command during initialization.
Signed-off-by: Avri Altman <avri.altman@sandisk.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Merge the mmc fixes for v6.18-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.19.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Merge the mmc fixes for v6.18-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.19.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
An error code was assigned to a variable and checked accordingly.
This value was passed to a dev_err_probe() call in an if branch.
This function is documented in the way that the same value is returned.
Thus delete a redundant variable reassignment.
The source code was transformed by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
As stated in Documentation/dev-tools/checkpatch.rst, octal file
permissions are preferred over symbolic constants because they are
easier to read and understand. Replace symbolic permissions with
their octal equivalents.
Signed-off-by: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
R-Car Gen2 SoCs have a 32 bit dataport, V3M even 64 bit. Make use of
the bigger size in the rare case DMA is failing.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
mmc_sd_num_wr_blocks() is in the block error path.
It needs to use GFP_NOIO. There is no need to complicate
anything here.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Enabling compile testing should not enable every individual driver (we
have "allyesconfig" for that).
Fixes: 7cd8db0fb0 ("mmc: add COMPILE_TEST to multiple drivers")
Cc: Mikko Rapeli <mikko.rapeli@linaro.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Pull MM updates from Andrew Morton:
- "mm, swap: improve cluster scan strategy" from Kairui Song improves
performance and reduces the failure rate of swap cluster allocation
- "support large align and nid in Rust allocators" from Vitaly Wool
permits Rust allocators to set NUMA node and large alignment when
perforning slub and vmalloc reallocs
- "mm/damon/vaddr: support stat-purpose DAMOS" from Yueyang Pan extend
DAMOS_STAT's handling of the DAMON operations sets for virtual
address spaces for ops-level DAMOS filters
- "execute PROCMAP_QUERY ioctl under per-vma lock" from Suren
Baghdasaryan reduces mmap_lock contention during reads of
/proc/pid/maps
- "mm/mincore: minor clean up for swap cache checking" from Kairui Song
performs some cleanup in the swap code
- "mm: vm_normal_page*() improvements" from David Hildenbrand provides
code cleanup in the pagemap code
- "add persistent huge zero folio support" from Pankaj Raghav provides
a block layer speedup by optionalls making the
huge_zero_pagepersistent, instead of releasing it when its refcount
falls to zero
- "kho: fixes and cleanups" from Mike Rapoport adds a few touchups to
the recently added Kexec Handover feature
- "mm: make mm->flags a bitmap and 64-bit on all arches" from Lorenzo
Stoakes turns mm_struct.flags into a bitmap. To end the constant
struggle with space shortage on 32-bit conflicting with 64-bit's
needs
- "mm/swapfile.c and swap.h cleanup" from Chris Li cleans up some swap
code
- "selftests/mm: Fix false positives and skip unsupported tests" from
Donet Tom fixes a few things in our selftests code
- "prctl: extend PR_SET_THP_DISABLE to only provide THPs when advised"
from David Hildenbrand "allows individual processes to opt-out of
THP=always into THP=madvise, without affecting other workloads on the
system".
It's a long story - the [1/N] changelog spells out the considerations
- "Add and use memdesc_flags_t" from Matthew Wilcox gets us started on
the memdesc project. Please see
https://kernelnewbies.org/MatthewWilcox/Memdescs and
https://blogs.oracle.com/linux/post/introducing-memdesc
- "Tiny optimization for large read operations" from Chi Zhiling
improves the efficiency of the pagecache read path
- "Better split_huge_page_test result check" from Zi Yan improves our
folio splitting selftest code
- "test that rmap behaves as expected" from Wei Yang adds some rmap
selftests
- "remove write_cache_pages()" from Christoph Hellwig removes that
function and converts its two remaining callers
- "selftests/mm: uffd-stress fixes" from Dev Jain fixes some UFFD
selftests issues
- "introduce kernel file mapped folios" from Boris Burkov introduces
the concept of "kernel file pages". Using these permits btrfs to
account its metadata pages to the root cgroup, rather than to the
cgroups of random inappropriate tasks
- "mm/pageblock: improve readability of some pageblock handling" from
Wei Yang provides some readability improvements to the page allocator
code
- "mm/damon: support ARM32 with LPAE" from SeongJae Park teaches DAMON
to understand arm32 highmem
- "tools: testing: Use existing atomic.h for vma/maple tests" from
Brendan Jackman performs some code cleanups and deduplication under
tools/testing/
- "maple_tree: Fix testing for 32bit compiles" from Liam Howlett fixes
a couple of 32-bit issues in tools/testing/radix-tree.c
- "kasan: unify kasan_enabled() and remove arch-specific
implementations" from Sabyrzhan Tasbolatov moves KASAN arch-specific
initialization code into a common arch-neutral implementation
- "mm: remove zpool" from Johannes Weiner removes zspool - an
indirection layer which now only redirects to a single thing
(zsmalloc)
- "mm: task_stack: Stack handling cleanups" from Pasha Tatashin makes a
couple of cleanups in the fork code
- "mm: remove nth_page()" from David Hildenbrand makes rather a lot of
adjustments at various nth_page() callsites, eventually permitting
the removal of that undesirable helper function
- "introduce kasan.write_only option in hw-tags" from Yeoreum Yun
creates a KASAN read-only mode for ARM, using that architecture's
memory tagging feature. It is felt that a read-only mode KASAN is
suitable for use in production systems rather than debug-only
- "mm: hugetlb: cleanup hugetlb folio allocation" from Kefeng Wang does
some tidying in the hugetlb folio allocation code
- "mm: establish const-correctness for pointer parameters" from Max
Kellermann makes quite a number of the MM API functions more accurate
about the constness of their arguments. This was getting in the way
of subsystems (in this case CEPH) when they attempt to improving
their own const/non-const accuracy
- "Cleanup free_pages() misuse" from Vishal Moola fixes a number of
code sites which were confused over when to use free_pages() vs
__free_pages()
- "Add Rust abstraction for Maple Trees" from Alice Ryhl makes the
mapletree code accessible to Rust. Required by nouveau and by its
forthcoming successor: the new Rust Nova driver
- "selftests/mm: split_huge_page_test: split_pte_mapped_thp
improvements" from David Hildenbrand adds a fix and some cleanups to
the thp selftesting code
- "mm, swap: introduce swap table as swap cache (phase I)" from Chris
Li and Kairui Song is the first step along the path to implementing
"swap tables" - a new approach to swap allocation and state tracking
which is expected to yield speed and space improvements. This
patchset itself yields a 5-20% performance benefit in some situations
- "Some ptdesc cleanups" from Matthew Wilcox utilizes the new memdesc
layer to clean up the ptdesc code a little
- "Fix va_high_addr_switch.sh test failure" from Chunyu Hu fixes some
issues in our 5-level pagetable selftesting code
- "Minor fixes for memory allocation profiling" from Suren Baghdasaryan
addresses a couple of minor issues in relatively new memory
allocation profiling feature
- "Small cleanups" from Matthew Wilcox has a few cleanups in
preparation for more memdesc work
- "mm/damon: add addr_unit for DAMON_LRU_SORT and DAMON_RECLAIM" from
Quanmin Yan makes some changes to DAMON in furtherance of supporting
arm highmem
- "selftests/mm: Add -Wunreachable-code and fix warnings" from Muhammad
Anjum adds that compiler check to selftests code and fixes the
fallout, by removing dead code
- "Improvements to Victim Process Thawing and OOM Reaper Traversal
Order" from zhongjinji makes a number of improvements in the OOM
killer: mainly thawing a more appropriate group of victim threads so
they can release resources
- "mm/damon: misc fixups and improvements for 6.18" from SeongJae Park
is a bunch of small and unrelated fixups for DAMON
- "mm/damon: define and use DAMON initialization check function" from
SeongJae Park implement reliability and maintainability improvements
to a recently-added bug fix
- "mm/damon/stat: expose auto-tuned intervals and non-idle ages" from
SeongJae Park provides additional transparency to userspace clients
of the DAMON_STAT information
- "Expand scope of khugepaged anonymous collapse" from Dev Jain removes
some constraints on khubepaged's collapsing of anon VMAs. It also
increases the success rate of MADV_COLLAPSE against an anon vma
- "mm: do not assume file == vma->vm_file in compat_vma_mmap_prepare()"
from Lorenzo Stoakes moves us further towards removal of
file_operations.mmap(). This patchset concentrates upon clearing up
the treatment of stacked filesystems
- "mm: Improve mlock tracking for large folios" from Kiryl Shutsemau
provides some fixes and improvements to mlock's tracking of large
folios. /proc/meminfo's "Mlocked" field became more accurate
- "mm/ksm: Fix incorrect accounting of KSM counters during fork" from
Donet Tom fixes several user-visible KSM stats inaccuracies across
forks and adds selftest code to verify these counters
- "mm_slot: fix the usage of mm_slot_entry" from Wei Yang addresses
some potential but presently benign issues in KSM's mm_slot handling
* tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (372 commits)
mm: swap: check for stable address space before operating on the VMA
mm: convert folio_page() back to a macro
mm/khugepaged: use start_addr/addr for improved readability
hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list
alloc_tag: fix boot failure due to NULL pointer dereference
mm: silence data-race in update_hiwater_rss
mm/memory-failure: don't select MEMORY_ISOLATION
mm/khugepaged: remove definition of struct khugepaged_mm_slot
mm/ksm: get mm_slot by mm_slot_entry() when slot is !NULL
hugetlb: increase number of reserving hugepages via cmdline
selftests/mm: add fork inheritance test for ksm_merging_pages counter
mm/ksm: fix incorrect KSM counter handling in mm_struct during fork
drivers/base/node: fix double free in register_one_node()
mm: remove PMD alignment constraint in execmem_vmalloc()
mm/memory_hotplug: fix typo 'esecially' -> 'especially'
mm/rmap: improve mlock tracking for large folios
mm/filemap: map entire large folio faultaround
mm/fault: try to map the entire file folio in finish_fault()
mm/rmap: mlock large folios in try_to_unmap_one()
mm/rmap: fix a mlock race condition in folio_referenced_one()
...
Pull block updates from Jens Axboe:
- NVMe pull request via Keith:
- FC target fixes (Daniel)
- Authentication fixes and updates (Martin, Chris)
- Admin controller handling (Kamaljit)
- Target lockdep assertions (Max)
- Keep-alive updates for discovery (Alastair)
- Suspend quirk (Georg)
- MD pull request via Yu:
- Add support for a lockless bitmap.
A key feature for the new bitmap are that the IO fastpath is
lockless. If a user issues lots of write IO to the same bitmap
bit in a short time, only the first write has additional overhead
to update bitmap bit, no additional overhead for the following
writes.
By supporting only resync or recover written data, means in the
case creating new array or replacing with a new disk, there is no
need to do a full disk resync/recovery.
- Switch ->getgeo() and ->bios_param() to using struct gendisk rather
than struct block_device.
- Rust block changes via Andreas. This series adds configuration via
configfs and remote completion to the rnull driver. The series also
includes a set of changes to the rust block device driver API: a few
cleanup patches, and a few features supporting the rnull changes.
The series removes the raw buffer formatting logic from
`kernel::block` and improves the logic available in `kernel::string`
to support the same use as the removed logic.
- floppy arch cleanups
- Reduce the number of dereferencing needed for ublk commands
- Restrict supported sockets for nbd. Mostly done to eliminate a class
of issues perpetually reported by syzbot, by using nonsensical socket
setups.
- A few s390 dasd block fixes
- Fix a few issues around atomic writes
- Improve DMA interation for integrity requests
- Improve how iovecs are treated with regards to O_DIRECT aligment
constraints.
We used to require each segment to adhere to the constraints, now
only the request as a whole needs to.
- Clean up and improve p2p support, enabling use of p2p for metadata
payloads
- Improve locking of request lookup, using SRCU where appropriate
- Use page references properly for brd, avoiding very long RCU sections
- Fix ordering of recursively submitted IOs
- Clean up and improve updating nr_requests for a live device
- Various fixes and cleanups
* tag 'for-6.18/block-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (164 commits)
s390/dasd: enforce dma_alignment to ensure proper buffer validation
s390/dasd: Return BLK_STS_INVAL for EINVAL from do_dasd_request
ublk: remove redundant zone op check in ublk_setup_iod()
nvme: Use non zero KATO for persistent discovery connections
nvmet: add safety check for subsys lock
nvme-core: use nvme_is_io_ctrl() for I/O controller check
nvme-core: do ioccsz/iorcsz validation only for I/O controllers
nvme-core: add method to check for an I/O controller
blk-cgroup: fix possible deadlock while configuring policy
blk-mq: fix null-ptr-deref in blk_mq_free_tags() from error path
blk-mq: Fix more tag iteration function documentation
selftests: ublk: fix behavior when fio is not installed
ublk: don't access ublk_queue in ublk_unmap_io()
ublk: pass ublk_io to __ublk_complete_rq()
ublk: don't access ublk_queue in ublk_need_complete_req()
ublk: don't access ublk_queue in ublk_check_commit_and_fetch()
ublk: don't pass ublk_queue to ublk_fetch()
ublk: don't access ublk_queue in ublk_config_io_buf()
ublk: don't access ublk_queue in ublk_check_fetch_buf()
ublk: pass q_id and tag to __ublk_check_and_get_req()
...
