Commit Graph

1397358 Commits

Author SHA1 Message Date
Tiwei Bie
8d74895527 asm-generic: percpu: Add assembly guard
Currently, asm/percpu.h is directly or indirectly included by
some assembly files on x86. Some of them (e.g., checksum_32.S)
are also used on um. But x86 and um provide different versions
of asm/percpu.h -- um uses asm-generic/percpu.h directly.

When SMP is enabled, asm-generic/percpu.h will introduce C code
that cannot be assembled. Since asm-generic/percpu.h currently
is not designed for use in assembly, and these assembly files
do not actually need asm/percpu.h on um, let's add the assembly
guard in asm-generic/percpu.h to fix this issue.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20251027001815.1666872-8-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:53 +01:00
Tiwei Bie
37f847b794 um: vdso: Remove getcpu support on x86
We are going to support SMP on UML/x86, so we can't hard code
the CPU and NUMA node in __vdso_getcpu() anymore. Let's just
remove it and let applications fall back to the syscall.

Suggested-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-7-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:53 +01:00
Tiwei Bie
1e4ee5135d um: Add initial SMP support
Add initial symmetric multi-processing (SMP) support to UML. With
this support enabled, users can tell UML to start multiple virtual
processors, each represented as a separate host thread.

In UML, kthreads and normal threads (when running in kernel mode)
can be scheduled and executed simultaneously on different virtual
processors. However, the userspace code of normal threads still
runs within their respective single-threaded stubs.

That is, SMP support is currently available both within the kernel
and across different processes, but still remains limited within
threads of the same process in userspace.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-6-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:15 +01:00
Tiwei Bie
9c82de55d4 um: Define timers on a per-CPU basis
Define timers on a per-CPU basis to enable each CPU to have its
own timer. This is a preparation for adding SMP support.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-5-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:15 +01:00
Tiwei Bie
2670917c2f um: Determine sleep based on need_resched()
With SMP and NO_HZ enabled, the CPU may still need to sleep even
if the timer is disarmed. Switch to deciding whether to sleep based
on pending resched. Additionally, because disabling IRQs does not
block SIGALRM, it is also necessary to check for any pending timer
alarms. This is a preparation for adding SMP support.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-4-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:15 +01:00
Tiwei Bie
9e5a9f1c9b um: Turn signals_* into thread-local variables
Turn signals_enabled, signals_pending and signals_active into
thread-local variables. This enables us to control and track
signals independently on each CPU thread. This is a preparation
for adding SMP support.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-3-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:15 +01:00
Tiwei Bie
6aaf00d14e um: Do not disable kmalloc in initial_thread_cb()
Currently, initial_thread_cb() temporarily disables kmalloc when
it invokes the callback, allowing the callback to bypass kmalloc.
This is unnecessary for the current users of initial_thread_cb(),
and we should avoid memory allocations that are not under the
control of the UML kernel. Therefore, let's stop temporarily
disabling kmalloc in initial_thread_cb().

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-2-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:41:14 +01:00
Tiwei Bie
a7f7dbae94 um: Remove file-based iomem emulation support
The file-based iomem emulation was introduced to support writing
paravirtualized drivers based on emulated iomem regions. However,
the only driver that makes use of it is an example driver called
mmapper, which was written over two decades ago.

We now have several modern device emulation mechanisms, such as
vhost-user-based virtio-uml. Remove the file-based iomem emulation
support to reduce the maintenance burden.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027054519.1996090-5-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:37:12 +01:00
Tiwei Bie
9c84022c1d um: Replace UML_ROUND_UP() with PAGE_ALIGN()
Although UML_ROUND_UP() is defined in a shared header file, it
depends on the PAGE_SIZE and PAGE_MASK macros, so it can only be
used in kernel code. Considering its name is not very clear and
its functionality is the same as PAGE_ALIGN(), replace its usages
with a direct call to PAGE_ALIGN() and remove it.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027054519.1996090-4-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:37:12 +01:00
Tiwei Bie
de20326748 um: Use PAGE_ALIGN() for address alignment
Use PAGE_ALIGN() instead of open-coded calculations.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027054519.1996090-3-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:37:12 +01:00
Tiwei Bie
691ff59148 um: Make host_task_size a local variable
Currently, host_task_size is a global variable, but it is only used
in linux_main() to compute stub_start and task_size. Make it a local
variable to limit its scope to where it is actually needed.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027054519.1996090-2-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 16:37:12 +01:00
Thomas Weißschuh
3c9b904f90 x86/um/vdso: Drop VDSO64-y from Makefile
This symbol is unnecessary, remove it.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20251013-uml-vdso-cleanup-v1-4-a079c7adcc69@weissschuh.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:12:06 +01:00
Thomas Weißschuh
12fe820fae x86/um/vdso: Panic when vDSO can not be allocated
The vDSO address is added to the userspace auxiliary vectors even if the
vDSO was not allocated. When accessing the page, userspace processes
will crash.

Enforce that the allocation works.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20251013-uml-vdso-cleanup-v1-3-a079c7adcc69@weissschuh.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:12:06 +01:00
Thomas Weißschuh
8c0fbd6ae4 x86/um/vdso: Use prototypes from generic vDSO headers
The generic vDSO library provides a convenient header for the vDSO
function prototypes, use it.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20251013-uml-vdso-cleanup-v1-2-a079c7adcc69@weissschuh.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:12:06 +01:00
Thomas Weißschuh
019cde8fc9 x86/um/vdso: Fix prototype of clock_gettime()
The clock_gettime() system call takes a pointer to
'struct __kernel_timespec', not 'struct __kernel_old_timespec'.
Right now this is not an issue as the vDSO never works with the
actual struct but only passes it through to the kernel.

Fix the prototype for consistency with the system call.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20251013-uml-vdso-cleanup-v1-1-a079c7adcc69@weissschuh.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:12:06 +01:00
Johannes Berg
6e3fc802ab um: move asm-offsets generation into a single file
There's nothing subarch dependent here, and it's odd
that includes need to be done in the subarch, and then
entries defined in the common file.

Simplify the whole thing from three files into one.

Link: https://patch.msgid.link/20251007071452.367989-4-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:07:44 +01:00
Johannes Berg
f11839c16c um/hostfs: define HOSTFS_ATTR_* via asm-offsets
The HOSTFS_ATTR_* values were meant to be standalone for
communication between hostfs's kernel and user code parts.
However, it's easy to forget that HOSTFS_ATTR_* should be
used even on the kernel side, and that wasn't consistently
done. As a result, the values need to match ATTR_* values,
which is not useful to maintain by hand. Instead, generate
them via asm-offsets like other constants that UML needs
in user-side code that aren't otherwise available in any
header files that can be included there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://patch.msgid.link/20251007071452.367989-3-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:07:43 +01:00
Johannes Berg
7b5d441696 um: init cpu_tasks[] earlier
This is currently done in uml_finishsetup(), but e.g. with
KCOV enabled we'll crash because some init code can call
into e.g. memparse(), which has coverage annotations, and
then the checks in check_kcov_mode() crash because current
is NULL.

Simply initialize the cpu_tasks[] array statically, which
fixes the crash. For the later SMP work, it seems to have
not really caused any problems yet, but initialize all of
the entries anyway.

Link: https://patch.msgid.link/20250924113214.c76cd74d0583.I974f691ebb1a2b47915bd2b04cc38e5263b9447f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-10-27 15:05:50 +01:00
Linus Torvalds
dcb6fa37fd Linux 6.18-rc3 v6.18-rc3 2025-10-26 15:59:49 -07:00
Linus Torvalds
4bb1f7e19c Merge tag 'char-misc-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
 "Here are some small char/misc/android driver fixes for 6.18-rc3 for
  reported issues. Included in here are:

   - rust binder fixes for reported issues

   - mei device id addition

   - mei driver fixes

   - comedi bugfix

   - most usb driver bugfixes

   - fastrpc memory leak fix

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  most: usb: hdm_probe: Fix calling put_device() before device initialization
  most: usb: Fix use-after-free in hdm_disconnect
  binder: remove "invalid inc weak" check
  mei: txe: fix initialization order
  comedi: fix divide-by-zero in comedi_buf_munge()
  mei: late_bind: Fix -Wincompatible-function-pointer-types-strict
  misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
  mei: me: add wildcat lake P DID
  misc: amd-sbi: Clarify that this is a BMC driver
  nvmem: rcar-efuse: add missing MODULE_DEVICE_TABLE
  binder: Fix missing kernel-doc entries in binder.c
  rust_binder: report freeze notification only when fully frozen
  rust_binder: don't delete FreezeListener if there are pending duplicates
  rust_binder: freeze_notif_done should resend if wrong state
  rust_binder: remove warning about orphan mappings
  rust_binder: clean `clippy::mem_replace_with_default` warning
2025-10-26 10:33:46 -07:00
Linus Torvalds
40282418e1 Merge tag 'staging-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
 "Here are some small staging driver fixes for the gpib subsystem to
  resolve some reported issues. Included in here are:

   - memory leak fixes

   - error code fixes

   - proper protocol fixes

  All of these have been in linux-next for almost 2 weeks now with no
  reported issues"

* tag 'staging-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: gpib: Fix device reference leak in fmh_gpib driver
  staging: gpib: Return -EINTR on device clear
  staging: gpib: Fix sending clear and trigger events
  staging: gpib: Fix no EOI on 1 and 2 byte writes
2025-10-26 10:29:45 -07:00
Linus Torvalds
aa6085a067 Merge tag 'tty-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
 "Here are some small tty and serial driver fixes for reported issues.
  Included in here are:

   - sh-sci serial driver fixes

   - 8250_dw and _mtk driver fixes

   - sc16is7xx driver bugfix

   - new 8250_exar device ids added

  All of these have been in linux-next this past week with no reported
  issues"

* tag 'tty-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_mtk: Enable baud clock and manage in runtime PM
  serial: 8250_dw: handle reset control deassert error
  dt-bindings: serial: sh-sci: Fix r8a78000 interrupts
  serial: sc16is7xx: remove useless enable of enhanced features
  serial: 8250_exar: add support for Advantech 2 port card with Device ID 0x0018
  tty: serial: sh-sci: fix RSCI FIFO overrun handling
2025-10-26 10:24:39 -07:00
Linus Torvalds
6190d0fa18 Merge tag 'usb-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
 "Here are some small USB driver fixes and new device ids for 6.18-rc3.
  Included in here are:

   - new option serial driver device ids added

   - dt bindings fixes for numerous platforms

   - xhci bugfixes for many reported regressions

   - usbio dependency bugfix

   - dwc3 driver fix

   - raw-gadget bugfix

  All of these have been in linux-next this week with no reported issues"

* tag 'usb-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: serial: option: add Telit FN920C04 ECM compositions
  USB: serial: option: add Quectel RG255C
  tcpm: switch check for role_sw device with fw_node
  usb/core/quirks: Add Huawei ME906S to wakeup quirk
  usb: raw-gadget: do not limit transfer length
  USB: serial: option: add UNISOC UIS7720
  xhci: dbc: enable back DbC in resume if it was enabled before suspend
  xhci: dbc: fix bogus 1024 byte prefix if ttyDBC read races with stall event
  usb: xhci-pci: Fix USB2-only root hub registration
  dt-bindings: usb: qcom,snps-dwc3: Fix bindings for X1E80100
  usb: misc: Add x86 dependency for Intel USBIO driver
  dt-bindings: usb: switch: split out ports definition
  usb: dwc3: Don't call clk_bulk_disable_unprepare() twice
  dt-bindings: usb: dwc3-imx8mp: dma-range is required only for imx8mp
2025-10-26 10:21:13 -07:00
Linus Torvalds
dbfc6422a3 Merge tag 'x86_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:

 - Remove dead code leftovers after a recent mitigations cleanup which
   fail a Clang build

 - Make sure a Retbleed mitigation message is printed only when
   necessary

 - Correct the last Zen1 microcode revision for which Entrysign sha256
   check is needed

 - Fix a NULL ptr deref when mounting the resctrl fs on a system which
   supports assignable counters but where L3 total and local bandwidth
   monitoring has been disabled at boot

* tag 'x86_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bugs: Remove dead code which might prevent from building
  x86/bugs: Qualify RETBLEED_INTEL_MSG
  x86/microcode: Fix Entrysign revision check for Zen1/Naples
  x86,fs/resctrl: Fix NULL pointer dereference with events force-disabled in mbm_event mode
2025-10-26 09:57:18 -07:00
Linus Torvalds
5fee0dafba Merge tag 'irq_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:

 - Restore the original buslock locking in a couple of places in the irq
   core subsystem after a rework

* tag 'irq_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/manage: Add buslock back in to enable_irq()
  genirq/manage: Add buslock back in to __disable_irq_nosync()
  genirq/chip: Add buslock back in to irq_set_handler()
2025-10-26 09:54:36 -07:00
Linus Torvalds
af8159515f Merge tag 'objtool_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:

 - Fix x32 build due to wrong format specifier on that sub-arch

 - Add one more Rust noreturn function to objtool's list

* tag 'objtool_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix failure when being compiled on x32 system
  objtool/rust: add one more `noreturn` Rust function
2025-10-26 09:44:36 -07:00
Linus Torvalds
1bc9743b64 Merge tag 'sched_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Borislav Petkov:

 - Make sure a CFS runqueue on a throttled hierarchy has its PELT clock
   throttled otherwise task movement and manipulation would lead to
   dangling cfs_rq references and an eventual crash

* tag 'sched_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Start a cfs_rq on throttled hierarchy with PELT clock throttled
2025-10-26 09:42:19 -07:00
Linus Torvalds
7ea5092f52 Merge tag 'timers_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Borislav Petkov:

 - Do not create more than eight (max supported) AUX clocks sysfs
   hierarchies

* tag 'timers_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Fix aux clocks sysfs initialization loop bound
2025-10-26 09:40:16 -07:00
Linus Torvalds
72761a7e31 Merge tag 'driver-core-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core fixes from Danilo Krummrich:

 - In Device::parent(), do not make any assumptions on the device
   context of the parent device

 - Check visibility before changing ownership of a sysfs attribute
   group

 - In topology_parse_cpu_capacity(), replace an incorrect usage of
   PTR_ERR_OR_ZERO() with IS_ERR_OR_NULL()

 - In devcoredump, fix a circular locking dependency between
   struct devcd_entry::mutex and kernfs

 - Do not warn about a pending fw_devlink sync state

* tag 'driver-core-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
  arch_topology: Fix incorrect error check in topology_parse_cpu_capacity()
  rust: device: fix device context of Device::parent()
  sysfs: check visibility before changing group attribute ownership
  devcoredump: Fix circular locking dependency with devcd->mutex.
  driver core: fw_devlink: Don't warn about sync_state() pending
2025-10-25 11:03:46 -07:00
Linus Torvalds
818444a61b Merge tag 'firewire-fixes-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixes from Takashi Sakamoto:
 "A small collection of FireWire fixes. This includes corrections to
  sparse and API documentation"

* tag 'firewire-fixes-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: init_ohci1394_dma: add missing function parameter documentation
  firewire: core: fix __must_hold() annotation
2025-10-25 10:58:32 -07:00
Linus Torvalds
9bb956508c Merge tag 'riscv-for-linus-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:

 - Close a race during boot between userspace vDSO usage and some
   late-initialized vDSO data

 - Improve performance on systems with non-CPU-cache-coherent
   DMA-capable peripherals by enabling write combining on
   pgprot_dmacoherent() allocations

 - Add human-readable detail for RISC-V IPI tracing

 - Provide more information to zsmalloc on 64-bit RISC-V to improve
   allocation

 - Silence useless boot messages about CPUs that have been disabled in
   DT

 - Resolve some compiler and smatch warnings and remove a redundant
   macro

* tag 'riscv-for-linus-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: hwprobe: avoid uninitialized variable use in hwprobe_arch_id()
  riscv: cpufeature: avoid uninitialized variable in has_thead_homogeneous_vlenb()
  riscv: hwprobe: Fix stale vDSO data for late-initialized keys at boot
  riscv: add a forward declaration for cpuinfo_op
  RISC-V: Don't print details of CPUs disabled in DT
  riscv: Remove the PER_CPU_OFFSET_SHIFT macro
  riscv: mm: Define MAX_POSSIBLE_PHYSMEM_BITS for zsmalloc
  riscv: Register IPI IRQs with unique names
  ACPI: RIMT: Fix unused function warnings when CONFIG_IOMMU_API is disabled
  RISC-V: Define pgprot_dmacoherent() for non-coherent devices
2025-10-25 09:35:26 -07:00
Linus Torvalds
27c0b5c4f6 Merge tag 'xfs-fixes-6.18-rc3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Carlos Maiolino:
 "The main highlight here is a fix for a bug brought in by the removal
  of attr2 mount option, where some installations might actually have
  'attr2' explicitly configured in fstab preventing system to boot by
  not being able to remount the rootfs as RW.

  Besides that there are a couple fix to the zonefs implementation,
  changing XFS_ONLINE_SCRUB_STATS to depend on DEBUG_FS (was select
  before), and some other minor changes"

* tag 'xfs-fixes-6.18-rc3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: fix locking in xchk_nlinks_collect_dir
  xfs: loudly complain about defunct mount options
  xfs: always warn about deprecated mount options
  xfs: don't set bt_nr_sectors to a negative number
  xfs: don't use __GFP_NOFAIL in xfs_init_fs_context
  xfs: cache open zone in inode->i_private
  xfs: avoid busy loops in GCD
  xfs: XFS_ONLINE_SCRUB_STATS should depend on DEBUG_FS
  xfs: do not tightly pack-write large files
  xfs: Improve CONFIG_XFS_RT Kconfig help
2025-10-25 09:31:13 -07:00
Linus Torvalds
566771afc7 Merge tag 'v6.18-rc2-smb-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
 "smbdirect (RDMA) fixes in order avoid potential submission queue
  overflows:

   - free transport teardown fix

   - credit related fixes (five server related, one client related)"

* tag 'v6.18-rc2-smb-server-fixes' of git://git.samba.org/ksmbd:
  smb: server: let free_transport() wait for SMBDIRECT_SOCKET_DISCONNECTED
  smb: client: make use of smbdirect_socket.send_io.lcredits.*
  smb: server: make use of smbdirect_socket.send_io.lcredits.*
  smb: server: simplify sibling_list handling in smb_direct_flush_send_list/send_done
  smb: server: smb_direct_disconnect_rdma_connection() already wakes all waiters on error
  smb: smbdirect: introduce smbdirect_socket.send_io.lcredits.*
  smb: server: allocate enough space for RW WRs and ib_drain_qp()
2025-10-24 18:50:15 -07:00
Andy Shevchenko
53abe3e1c1 sched: Remove never used code in mm_cid_get()
Clang is not happy with set but unused variable (this is visible
with `make W=1` build:

  kernel/sched/sched.h:3744:18: error: variable 'cpumask' set but not used [-Werror,-Wunused-but-set-variable]

It seems like the variable was never used along with the assignment
that does not have side effects as far as I can see.  Remove those
altogether.

Fixes: 223baf9d17 ("sched: Fix performance regression introduced by mm_cid")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-10-24 16:55:46 -07:00
Linus Torvalds
3d08a425d2 Merge tag 'drm-fixes-2025-10-24' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Simona Vetter:
 "Very quiet, all just small stuff and nothing scary pending to my
  knowledge:

   - drm_panic: bunch of size calculation fixes

   - pantor: fix kernel panic on partial gpu va unmap

   - rockchip: hdmi hotplug setup fix

   - amdgpu: dp mst, dc/display fixes

   - i915: fix panic structure leak

   - xe: madvise uapi fix, wq alloc error, vma flag handling fix"

* tag 'drm-fixes-2025-10-24' of https://gitlab.freedesktop.org/drm/kernel:
  drm/xe: Check return value of GGTT workqueue allocation
  drm/amd/display: use GFP_NOWAIT for allocation in interrupt handler
  drm/amd/display: increase max link count and fix link->enc NULL pointer access
  drm/amd/display: Fix NULL pointer dereference
  drm/panic: Fix 24bit pixel crossing page boundaries
  drm/panic: Fix divide by 0 if the screen width < font width
  drm/panic: Fix kmsg text drawing rectangle
  drm/panic: Fix qr_code, ensure vmargin is positive
  drm/panic: Fix overlap between qr code and logo
  drm/panic: Fix drawing the logo on a small narrow screen
  drm/xe/uapi: Hide the madvise autoreset behind a VM_BIND flag
  drm/xe: Retain vma flags when recreating and splitting vmas for madvise
  drm/i915/panic: fix panic structure allocation memory leak
  drm/panthor: Fix kernel panic on partial unmap of a GPU VA region
  drm/rockchip: dw_hdmi: use correct SCLIN mask for RK3228
2025-10-24 16:49:16 -07:00
Linus Torvalds
31009296f8 Merge tag 'pci-v6.18-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:

 - Add DWC custom pci_ops for the root bus instead of overwriting the
   DBI base address, which broke drivers that rely on the DBI address
   for iATU programming; fixes an FU740 probe regression (Krishna
   Chaitanya Chundru)

 - Revert qcom ECAM enablement, which is rendered unnecessary by the DWC
   custom pci_ops (Krishna Chaitanya Chundru)

 - Fix longstanding MIPS Malta resource registration issues to avoid
   exposing them when the next commit fixes the boot failure (Maciej W.
   Rozycki)

 - Use pcibios_align_resource() on MIPS Malta to fix boot failure caused
   by using the generic pci_enable_resources() (Ilpo Järvinen)

 - Enable only ASPM L0s and L1, not L1 PM Substates, for devicetree
   platforms because we lack information required to configure L1
   Substates; fixes regressions on powerpc and rockchip. A qcom
   regression (L1 Substates no longer enabled) remains and will be
   addressed next (Bjorn Helgaas)

* tag 'pci-v6.18-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  PCI/ASPM: Enable only L0s and L1 for devicetree platforms
  MIPS: Malta: Use pcibios_align_resource() to block io range
  MIPS: Malta: Fix PCI southbridge legacy resource reservations
  MIPS: Malta: Fix keyboard resource preventing i8042 driver from registering
  Revert "PCI: qcom: Prepare for the DWC ECAM enablement"
  PCI: dwc: Use custom pci_ops for root bus DBI vs ECAM config access
2025-10-24 16:43:08 -07:00
Nirbhay Sharma
73ba88fb04 firewire: init_ohci1394_dma: add missing function parameter documentation
Add missing kernel-doc parameter descriptions for five functions
in init_ohci1394_dma.c to fix documentation warnings when building
with W=1.

This patch addresses the following warnings:
- init_ohci1394_wait_for_busresets: missing @ohci description
- init_ohci1394_enable_physical_dma: missing @ohci description
- init_ohci1394_reset_and_init_dma: missing @ohci description
- init_ohci1394_controller: missing @num, @slot, @func descriptions
- setup_ohci1394_dma: missing @opt description

Tested with GCC 13.2.0 and W=1 flag. All documentation warnings
for these functions have been resolved.

Signed-off-by: Nirbhay Sharma <nirbhay.lkd@gmail.com>
Link: https://lore.kernel.org/r/20251024203219.101990-2-nirbhay.lkd@gmail.com
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2025-10-25 08:29:56 +09:00
Linus Torvalds
7083bb6060 Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fix from Eric Biggers:
 "Avoid some false-positive KMSAN warnings by restoring the dependency
  of the architecture-optimized Poly1305 code on !KMSAN"

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
  lib/crypto: poly1305: Restore dependency of arch code on !KMSAN
2025-10-24 15:51:24 -07:00
Linus Torvalds
f2b2465726 Merge tag '6.18-rc2-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:

 - add missing tracepoints

 - smbdirect (RDMA) fix

 - fix potential issue with credits underflow

 - rename fix

 - improvement to calc_signature and additional cleanup patch

* tag '6.18-rc2-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: #include cifsglob.h before trace.h to allow structs in tracepoints
  cifs: Call the calc_signature functions directly
  smb: client: get rid of d_drop() in cifs_do_rename()
  cifs: Fix TCP_Server_Info::credits to be signed
  cifs: Add a couple of missing smb3_rw_credits tracepoints
  smb: client: allocate enough space for MR WRs and ib_drain_qp()
2025-10-24 15:48:08 -07:00
Linus Torvalds
d2818517e3 Merge tag 'block-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:

 - Fix dma alignment for PI

 - Fix selinux bogosity with nbd, where sendmsg would get rejected

* tag 'block-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  block: require LBA dma_alignment when using PI
  nbd: override creds to kernel when calling sock_{send,recv}msg()
2025-10-24 12:48:19 -07:00
Linus Torvalds
812e7eb2b0 Merge tag 'io_uring-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:

 - Add MAINTAINERS entry for zcrx, mostly so that netdev gets
   automatically CC'ed by default on any changes there too.

 - Fix for the SQPOLL busy vs work time accounting.

   It was using getrusage(), which was both broken from a thread point
   of view (we only care about the SQPOLL thread itself), and vastly
   overkill as only the systime was used. On top of that, also be a bit
   smarter in when it's queried. It used excessive CPU before this
   change. Marked for stable as well.

 - Fix provided ring buffer auto commit for uring_cmd.

 - Fix a few style issues and sparse annotation for a lock.

* tag 'io_uring-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: fix buffer auto-commit for multishot uring_cmd
  io_uring: correct __must_hold annotation in io_install_fixed_file
  io_uring zcrx: add MAINTAINERS entry
  io_uring: Fix code indentation error
  io_uring/sqpoll: be smarter on when to update the stime usage
  io_uring/sqpoll: switch away from getrusage() for CPU accounting
  io_uring: fix incorrect unlikely() usage in io_waitid_prep()
2025-10-24 12:44:31 -07:00
Linus Torvalds
66cd8e9cb8 Merge tag 'slab-for-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:

 - Two fixes for race conditions in obj_exts allocation (Hao Ge)

 - Fix for slab accounting imbalance due to deferred slab decativation
   (Vlastimil Babka)

* tag 'slab-for-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  slab: Fix obj_ext mistakenly considered NULL due to race condition
  slab: fix slab accounting imbalance due to defer_deactivate_slab()
  slab: Avoid race on slab->obj_exts in alloc_slab_obj_exts
2025-10-24 12:40:51 -07:00
Linus Torvalds
2e590d67c2 Merge tag 'devicetree-fixes-for-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:

 - Fix handling of GICv5 ITS MSI properties on platforms with
   'msi-parent' as well as a of_node refcounting fix.

   This is also preparation for further refactoring in 6.19 to use
   common DT parsing of MSI properties.

* tag 'devicetree-fixes-for-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of/irq: Export of_msi_xlate() for module usage
  of/irq: Fix OF node refcount in of_msi_get_domain()
  of/irq: Add msi-parent check to of_msi_xlate()
2025-10-24 11:17:38 -07:00
Linus Torvalds
9b9b6e71ee Merge tag 'soc-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
 "The main change this time is an update to the MAINTAINERS file,
  listing Krzysztof Kozlowski, Alexandre Belloni, and Linus Walleij as
  additional maintainers for the SoC tree, in order to go back to a
  group maintainership. Drew Fustini joins as an additional reviewer for
  the SoC tree.

  Thanks to all of you for volunteering to help out.

  On the actual bugfixes, we have a few correctness changes for firmware
  drivers (qtee, arm-ffa, scmi) and two devicetree fixes for Raspberry
  Pi"

* tag 'soc-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  soc: officially expand maintainership team
  firmware: arm_scmi: Fix premature SCMI_XFER_FLAG_IS_RAW clearing in raw mode
  firmware: arm_scmi: Skip RAW initialization on failure
  include: trace: Fix inflight count helper on failed initialization
  firmware: arm_scmi: Account for failed debug initialization
  ARM: dts: broadcom: rpi: Switch to V3D firmware clock
  arm64: dts: broadcom: bcm2712: Define VGIC interrupt
  firmware: arm_ffa: Add support for IMPDEF value in the memory access descriptor
  tee: QCOMTEE should depend on ARCH_QCOM
  tee: qcom: return -EFAULT instead of -EINVAL if copy_from_user() fails
  tee: qcom: prevent potential off by one read
2025-10-24 11:15:17 -07:00
Linus Torvalds
7bd29bf1fd Merge tag 'hwmon-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:

 - cgbc-hwmon: Add missing NULL check after devm_kzalloc

 - gpd-fan: Fix error handling

 - pmbus/isl68137: Fix child node reference leak

 - pmbus/max34440: Update adpm12160 coefficients to match latest FW

 - sht3x: Fix error handling

* tag 'hwmon-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (sht3x) Fix error handling
  hwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc()
  hwmon: (pmbus/isl68137) Fix child node reference leak on early return
  hwmon: (gpd-fan) Fix error handling in gpd_fan_probe()
  hwmon: (gpd-fan) Fix return value when platform_get_resource() fails
  hwmon: (pmbus/max34440) Update adpm12160 coeff due to latest FW
2025-10-24 11:11:35 -07:00
Linus Torvalds
58834e2d3e Merge tag 'spi-fix-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
 "A moderately large collection of device specific changes here, mostly
  fixes but also including a few new quirks and device IDs. This is all
  fairly routine even for the affected devices"

* tag 'spi-fix-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: dt-bindings: spi-rockchip: Add RK3506 compatible
  spi: intel-pci: Add support for Intel Wildcat Lake SPI serial flash
  spi: intel-pci: Add support for Arrow Lake-H SPI serial flash
  spi: intel: Add support for 128M component density
  spi: airoha: fix reading/writing of flashes with more than one plane per lun
  spi: airoha: switch back to non-dma mode in the case of error
  spi: airoha: add support of dual/quad wires spi modes to exec_op() handler
  spi: airoha: return an error for continuous mode dirmap creation cases
  spi: amlogic: fix spifc build error
  spi: cadence-quadspi: Fix pm_runtime unbalance on dma EPROBE_DEFER
  spi: spi-nxp-fspi: limit the clock rate for different sample clock source selection
  spi: spi-nxp-fspi: add extra delay after dll locked
  spi: spi-nxp-fspi: re-config the clock rate when operation require new clock rate
  spi: dw-mmio: add error handling for reset_control_deassert()
  spi: rockchip-sfc: Fix DMA-API usage
  spi: dt-bindings: cadence: add soc-specific compatible strings for zynqmp and versal-net
2025-10-24 11:01:40 -07:00
Linus Torvalds
c1a1c0d32d Merge tag 'gpio-fixes-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:

 - fix regressions in regmap cache initialization in gpio-104-idio-16
   and gpio-pci-idio-16

 - configure first 16 GPIO lines of the IDIO-16 as fixed outputs

 - fix duplicated IRQ mapping that can lead to an RCU stall in gpio-ljca

 - fix printf formatters passed to dev_err() and make failure to set
   debounce period non fatal

* tag 'gpio-fixes-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: ljca: Fix duplicated IRQ mapping
  gpiolib: acpi: Use %pe when passing an error pointer to dev_err()
  gpiolib: acpi: Make set debounce errors non fatal
  gpio: idio-16: Define fixed direction of the GPIO lines
  gpio: regmap: add the .fixed_direction_output configuration parameter
  gpio: pci-idio-16: Define maximum valid register address offset
  gpio: 104-idio-16: Define maximum valid register address offset
2025-10-24 10:45:29 -07:00
Arnd Bergmann
b2a578f312 soc: officially expand maintainership team
Since Olof moved on from the soc tree maintenance, Arnd has mainly taken
care of the day-to-day activities around the SoC tree by himself, which
is generally not a good setup.

Krzysztof, Linus and Alexandre have volunteered to become co-maintainers
of the SoC tree, with the plan of taking turns to do merges and reviews
to spread the workload. In addition, Drew joins as another reviewer.

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Drew Fustini <fustini@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2025-10-24 18:58:39 +02:00
Andy Shevchenko
84dfce65a7 x86/bugs: Remove dead code which might prevent from building
Clang, in particular, is not happy about dead code:

arch/x86/kernel/cpu/bugs.c:1830:20: error: unused function 'match_option' [-Werror,-Wunused-function]
 1830 | static inline bool match_option(const char *arg, int arglen, const char *opt)
      |                    ^~~~~~~~~~~~
1 error generated.

Remove a leftover from the previous cleanup.

Fixes: 02ac6cc8c5 ("x86/bugs: Simplify SSB cmdline parsing")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://patch.msgid.link/20251024125959.1526277-1-andriy.shevchenko%40linux.intel.com
2025-10-24 09:42:00 -07:00
Lorenzo Pieralisi
7209ff3100 of/irq: Export of_msi_xlate() for module usage
of_msi_xlate() is required by drivers that can be configured
as modular, export the symbol.

Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Cc: Rob Herring <robh@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251021124103.198419-4-lpieralisi@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-10-24 07:44:09 -05:00