The memory bandwidth software controller uses 2^20 units rather than
10^6. See mbm_bw_count() which computes bandwidth using the "SZ_1M"
Linux define for 0x00100000.

Update the documentation to use MiB when describing this feature.
It's too late to fix the mount option "mba_MBps" as that is now an
established user interface.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240322182016.196544-1-tony.luck@intel.com

The APIC address is registered twice. First during the early detection and
afterwards when actually scanning the table for APIC IDs. The APIC and
topology core warn about the second attempt.

Restrict it to the early detection call.

Fixes: 81287ad6 ("x86/apic: Sanitize APIC address setup")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240322185305.297774848@linutronix.de

If there is no local APIC enumerated and registered then the topology
bitmaps are empty. Therefore, topology_init_possible_cpus() will die with
a division by zero exception.

Prevent this by registering a fake APIC id to populate the topology
bitmap. This also allows to use all topology query interfaces
unconditionally. It does not affect the actual APIC code because either
the local APIC address was not registered or no local APIC could be
detected.

Fixes: f1f758a8 ("x86/topology: Add a mechanism to track topology via APIC IDs")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240322185305.242709302@linutronix.de

The local APICs have not yet been enumerated so the logical ID evaluation
from the topology bitmaps does not work and would return an error code.

Skip the evaluation during the early boot CPUID evaluation and only apply
it on the final run.

Fixes: 380414be ("x86/cpu/topology: Use topology logical mapping mechanism")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240322185305.186943142@linutronix.de

The boot sequence evaluates CPUID information twice:

  1) During early boot

  2) When finalizing the early setup right before
     mitigations are selected and alternatives are patched.

In both cases the evaluation is stored in boot_cpu_data, but on UP the
copying of boot_cpu_data to the per CPU info of the boot CPU happens
between #1 and #2. So any update which happens in #2 is never propagated to
the per CPU info instance.

Consolidate the whole logic and copy boot_cpu_data right before applying
alternatives as that's the point where boot_cpu_data is in it's final
state and not supposed to change anymore.

This also removes the voodoo mb() from smp_prepare_cpus_common() which
had absolutely no purpose.

Fixes: 71eb4893 ("x86/percpu: Cure per CPU madness on UP")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240322185305.127642785@linutronix.de

Read from an unsafe address with copy_from_kernel_nofault() in
arch_adjust_kprobe_addr() because this function is used before checking
the address is in text or not. Syzcaller bot found a bug and reported
the case if user specifies inaccessible data area,
arch_adjust_kprobe_addr() will cause a kernel panic.

[ mingo: Clarified the comment. ]

Fixes: cc66bb91 ("x86/ibt,kprobes: Cure sym+0 equals fentry woes")
Reported-by: Qiang Zhang <zzqq0103.hey@gmail.com>
Tested-by: Jinghao Jia <jinghao7@illinois.edu>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/171042945004.154897.2221804961882915806.stgit@devnote2

Since:

  7ee18d67 ("x86/power: Make restore_processor_context() sane")

kmemleak reports this issue:

  unreferenced object 0xf68241e0 (size 32):
    comm "swapper/0", pid 1, jiffies 4294668610 (age 68.432s)
    hex dump (first 32 bytes):
      00 cc cc cc 29 10 01 c0 00 00 00 00 00 00 00 00  ....)...........
      00 42 82 f6 cc cc cc cc cc cc cc cc cc cc cc cc  .B..............
    backtrace:
      [<461c1d50>] __kmem_cache_alloc_node+0x106/0x260
      [<ea65e13b>] __kmalloc+0x54/0x160
      [<c3858cd2>] msr_build_context.constprop.0+0x35/0x100
      [<46635aff>] pm_check_save_msr+0x63/0x80
      [<6b6bb938>] do_one_initcall+0x41/0x1f0
      [<3f3add60>] kernel_init_freeable+0x199/0x1e8
      [<3b538fde>] kernel_init+0x1a/0x110
      [<938ae2b2>] ret_from_fork+0x1c/0x28

Which is a false positive.

Reproducer:

  - Run rsync of whole kernel tree (multiple times if needed).
  - start a kmemleak scan
  - Note this is just an example: a lot of our internal tests hit these.

The root cause is similar to the fix in:

  b0b592cf x86/pm: Fix false positive kmemleak report in msr_build_context()

ie. the alignment within the packed struct saved_context
which has everything unaligned as there is only "u16 gs;" at start of
struct where in the past there were four u16 there thus aligning
everything afterwards.  The issue is with the fact that Kmemleak only
searches for pointers that are aligned (see how pointers are scanned in
kmemleak.c) so when the struct members are not aligned it doesn't see
them.

Testing:

We run a lot of tests with our CI, and after applying this fix we do not
see any kmemleak issues any more whilst without it we see hundreds of
the above report. From a single, simple test run consisting of 416 individual test
cases on kernel 5.10 x86 with kmemleak enabled we got 20 failures due to this,
which is quite a lot. With this fix applied we get zero kmemleak related failures.

Fixes: 7ee18d67 ("x86/power: Make restore_processor_context() sane")
Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: stable@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20240314142656.17699-1-anton@tuxera.com

crashkernel reservation failed on a Thinkpad t440s laptop recently.
Actually the memblock reservation succeeded, but later insert_resource()
failed.

Test steps:
  kexec load -> /* make sure add crashkernel param eg. crashkernel=160M */
    kexec reboot ->
        dmesg|grep "crashkernel reserved";
            crashkernel memory range like below reserved successfully:
              0x00000000d0000000 - 0x00000000da000000
        But no such "Crash kernel" region in /proc/iomem

The background story:

Currently the E820 code reserves setup_data regions for both the current
kernel and the kexec kernel, and it inserts them into the resources list.

Before the kexec kernel reboots nobody passes the old setup_data, and
kexec only passes fresh SETUP_EFI/SETUP_IMA/SETUP_RNG_SEED if needed.
Thus the old setup data memory is not used at all.

Due to old kernel updates the kexec e820 table as well so kexec kernel
sees them as E820_TYPE_RESERVED_KERN regions, and later the old setup_data
regions are inserted into resources list in the kexec kernel by
e820__reserve_resources().

Note, due to no setup_data is passed in for those old regions they are not
early reserved (by function early_reserve_memory), and the crashkernel
memblock reservation will just treat them as usable memory and it could
reserve the crashkernel region which overlaps with the old setup_data
regions. And just like the bug I noticed here, kdump insert_resource
failed because e820__reserve_resources has added the overlapped chunks
in /proc/iomem already.

Finally, looking at the code, the old setup_data regions are not used
at all as no setup_data is passed in by the kexec boot loader. Although
something like SETUP_PCI etc could be needed, kexec should pass
the info as new setup_data so that kexec kernel can take care of them.
This should be taken care of in other separate patches if needed.

Thus drop the useless buggy code here.
Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Bohac <jbohac@suse.cz>
Cc: Eric DeVolder <eric.devolder@oracle.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Link: https://lore.kernel.org/r/Zf0T3HCG-790K-pZ@darkstar.users.ipa.redhat.com

Kconfig emits a warning for the following command:

  $ make ARCH=x86_64 tinyconfig
  ...
  .config:1380:warning: override: UNWINDER_GUESS changes choice state

When X86_64=y, the unwinder is exclusively selected from the following
three options:

 - UNWINDER_ORC
 - UNWINDER_FRAME_POINTER
 - UNWINDER_GUESS

However, arch/x86/configs/tiny.config only specifies the values of the
last two. UNWINDER_ORC must be explicitly disabled.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240320154313.612342-1-masahiroy@kernel.org

Pull irq fix from Ingo Molnar:
 "A RISC-V irqchip driver fix"

* tag 'irq-urgent-2024-03-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/riscv-intc: Fix use of AIA interrupts 32-63 on riscv32

Pull sound fixes from Takashi Iwai:
 "Two regression fixes that had been introduced in this merge window,
  additional HD-audio quirks, and a further enhancement for the new
  kunit"

* tag 'sound-fix-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: core: add kunitconfig
  ALSA: hda/realtek: add in quirk for Acer Swift Go 16 - SFG16-71
  Revert "ALSA: usb-audio: Name feature ctl using output if input is PCM"
  ALSA: timer: Fix missing irq-disable at closing
  ALSA: hda/realtek: Add quirk for Lenovo Yoga 9 14IMH9

Pull i3c updates from Alexandre Belloni:
 "Not much this cycle with only three patches.

  Core:
   - i3c_bus_type is now const

  Drivers:
   - dw: disabling IBI is only allowed when hot join and SIR are disabled"

* tag 'i3c/for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  i3c: Make i3c_bus_type const
  i3c: dw: Disable IBI IRQ depends on hot-join and SIR enabling
  dt-bindings: i3c: drop "master" node name suffix

Pull EFI fix from Ard Biesheuvel:
 "This fixes an oversight on my part in the recent EFI stub rework for
  x86, which is needed to get Linux/x86 distro builds signed again for
  secure boot by Microsoft. For this reason, most of this work is being
  backported to v6.1, which is therefore also affected by this
  regression.

   - Explicitly wipe BSS in the native EFI entrypoint, so that globals
     shared with the legacy decompressor are zero-initialized correctly"

* tag 'efi-fixes-for-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  x86/efistub: Clear decompressor BSS in native EFI entrypoint

Pull timer fix from Ingo Molnar:
 "Fix timer migration bug that can result in long bootup delays and
  other oddities"

* tag 'timers-urgent-2024-03-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timer/migration: Remove buggy early return on deactivation

Pull x86 perf event fixes from Ingo Molnar:

 - Work around AMD erratum to filter out bogus LBR stack entries

 - Fix incorrect PMU reset that can result in warnings (or worse)
   during suspend/hibernation

* tag 'perf-urgent-2024-03-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd/core: Avoid register reset when CPU is dead
  perf/x86/amd/lbr: Discard erroneous branch entries

Pull watchdog updates from Wim Van Sebroeck:

 - Remove usage of the deprecated ida_simple_xx() API

 - Add kernel-doc for wdt_set_timeout()

 - Add support for R-Car V4M, StarFive's JH8100 and sam9x7-wdt

 - Fixes and small improvements

* tag 'linux-watchdog-6.9-rc1' of git://www.linux-watchdog.org/linux-watchdog:
  watchdog: intel-mid_wdt: Get platform data via dev_get_platdata()
  watchdog: intel-mid_wdt: Don't use "proxy" headers
  watchdog: intel-mid_wdt: Remove unused intel-mid.h
  dt-bindings: watchdog: sama5d4-wdt: add compatible for sam9x7-wdt
  dt-bindings: watchdog: sprd,sp9860-wdt: convert to YAML
  dt-bindings: watchdog: starfive,jh7100-wdt: Add compatible for JH8100
  watchdog: stm32_iwdg: initialize default timeout
  dt-bindings: watchdog: arm,sp805: document the reset signal
  watchdog: sp805_wdt: deassert the reset if available
  watchdog/hpwdt: Support Suspend and Resume
  dt-bindings: watchdog: renesas-wdt: Add support for R-Car V4M
  watchdog: starfive: check watchdog status before enabling in system resume
  watchdog: starfive: Check pm_runtime_enabled() before decrementing usage counter
  watchdog: qcom: fine tune the max timeout value calculation
  watchdog: Add kernel-doc for wdt_set_timeout()
  watchdog: core: Remove usage of the deprecated ida_simple_xx() API

Pull PCMCIA updates from Dominik Brodowski:
 "Mark some structs 'const' now that the driver core supports it
  (Ricardo B Marliere)"

* tag 'pcmcia-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux:
  pcmcia: cs: make pcmcia_socket_class constant
  pcmcia: ds: make pcmcia_bus_type const

Pull input updates from Dmitry Torokhov:

 - a new driver for Goodix Berlin I2C and SPI touch controllers

 - support for IQS7222D v1.1 and v1.2 in iqs7222 driver

 - support for IST3032C and IST3038B parts in Imagis touchscreen driver

 - support for touch keys for Imagis touchscreen controllers

 - support for Snakebyte GAMEPADs in xpad driver

 - various cleanups and conversions to yaml for device tree bindings

 - assorted fixes and cleanups

 - old Synaptics navpoint driver has been removed since the only board
   that used it (HP iPAQ hx4700) was removed a while ago.

* tag 'input-for-v6.9-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (37 commits)
  Input: xpad - add support for Snakebyte GAMEPADs
  dt-bindings: input: samsung,s3c6410-keypad: convert to DT Schema
  Input: imagis - add touch key support
  dt-bindings: input: imagis: Document touch keys
  Input: imagis - use FIELD_GET where applicable
  Input: make input_class constant
  dt-bindings: input: atmel,captouch: convert bindings to YAML
  Input: iqs7222 - add support for IQS7222D v1.1 and v1.2
  dt-bindings: input: allwinner,sun4i-a10-lrad: drop redundant type from label
  Input: serio - make serio_bus const
  Input: synaptics-rmi4 - make rmi_bus_type const
  Input: xilinx_ps2 - fix kernel-doc for xps2_of_probe function
  input/touchscreen: imagis: add support for IST3032C
  dt-bindings: input/touchscreen: imagis: add compatible for IST3032C
  input/touchscreen: imagis: Add support for Imagis IST3038B
  dt-bindings: input/touchscreen: Add compatible for IST3038B
  input/touchscreen: imagis: Correct the maximum touch area value
  Input: leds - change config symbol dependency for audio mute trigger
  Input: ti_am335x_tsc - remove redundant assignment to variable config
  Input: xpad - sort xpad_device by vendor and product ID
  ...

It is helpful to add .kunitconfig if we work with the tools provided by
KUnit project. The file describes the series of kernel configurations to
satisfy the dependency to build the target test.

For example:

$ ./tools/testing/kunit/kunit.py run --arch=arm64 --cross_compile=aarch64-linux-gnu- --kunitconfig=sound/core/
[11:35:13] Configuring KUnit Kernel ...
Regenerating .config ...
Populating config with:
$ make ARCH=arm64 O=.kunit olddefconfig CROSS_COMPILE=aarch64-linux-gnu-
[11:35:19] Building KUnit Kernel ...
Populating config with:
$ make ARCH=arm64 O=.kunit olddefconfig CROSS_COMPILE=aarch64-linux-gnu-
Building with:
$ make ARCH=arm64 O=.kunit --jobs=8 CROSS_COMPILE=aarch64-linux-gnu-
[11:37:35] Starting KUnit Kernel (1/1)...
[11:37:35] ============================================================
Running tests with:
$ qemu-system-aarch64 -nodefaults -m 1024 -kernel .kunit/arch/arm64/boot/Image.gz -append 'kunit.enable=1 console=ttyAMA0 kunit_shutdown=reboot' -no-reboot -nographic -serial stdio -machine virt -cpu max,pauth-impdef=on
[11:37:35] ============== sound-core-test (10 subtests) ===============
[11:37:35] [PASSED] test_phys_format_size
[11:37:35] [PASSED] test_format_width
[11:37:35] [PASSED] test_format_endianness
[11:37:35] [PASSED] test_format_signed
[11:37:35] [PASSED] test_format_fill_silence
[11:37:35] [PASSED] test_playback_avail
[11:37:35] [PASSED] test_capture_avail
[11:37:35] [PASSED] test_card_set_id
[11:37:35] [PASSED] test_pcm_format_name
[11:37:35] [PASSED] test_card_add_component
[11:37:35] ================= [PASSED] sound-core-test =================
[11:37:35] ============================================================
[11:37:35] Testing complete. Ran 10 tests: passed: 10
[11:37:35] Elapsed time: 142.333s total, 5.617s configuring, 136.047s building, 0.630s running
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Message-ID: <20240317024050.588370-1-o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Keyboard has an LED that is ON/OFF when mic is muted/active
 - LED is controlled by GPIO pin
 - Patch enables led to appear in /sys/class/leds/ as hda::micmute
 - Enables LED when mic is MUTED
 - Disables LED when mic is active

[ fixed white spaces by tiwai ]
Signed-off-by: Ian Murphy <iano200@gmail.com>
Message-ID: <20240316094157.13890-1-iano200@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

This reverts commit 1601cd53.

This fix is applied globally to all devices, and it may change the
existing control names.  When the devices are managed with the fixed
configuration like UCM, such control name mismatch may lead to
significant regressions.

For avoiding that kind of regression, we would need to apply such
changes conditionally, but it'd take time to settle down.
While the original fix is a good thing in general, in order to address
the regression, let's revert the change for now.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=218605Reported-and-tested-by: Niklāvs Koļesņikovs <pinkflames.linux@gmail.com>
Message-ID: <20240316083744.28126-1-tiwai@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Pull SCSI updates from James Bottomley:
 "Only a couple of driver updates this time (lpfc and mpt3sas) plus the
  usual assorted minor fixes and updates. The major core update is a set
  of patches moving retries out of the drivers and into the core"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (84 commits)
  scsi: core: Constify the struct device_type usage
  scsi: libfc: replace deprecated strncpy() with memcpy()
  scsi: lpfc: Replace deprecated strncpy() with strscpy()
  scsi: bfa: Fix function pointer type mismatch for state machines
  scsi: bfa: Fix function pointer type mismatch for hcb_qe->cbfn
  scsi: bfa: Remove additional unnecessary struct declarations
  scsi: csiostor: Avoid function pointer casts
  scsi: qla1280: Remove redundant assignment to variable 'mr'
  scsi: core: Make scsi_bus_type const
  scsi: core: Really include kunit tests with SCSI_LIB_KUNIT_TEST
  scsi: target: tcm_loop: Make tcm_loop_lld_bus const
  scsi: scsi_debug: Make pseudo_lld_bus const
  scsi: iscsi: Make iscsi_flashnode_bus const
  scsi: fcoe: Make fcoe_bus_type const
  scsi: lpfc: Copyright updates for 14.4.0.0 patches
  scsi: lpfc: Update lpfc version to 14.4.0.0
  scsi: lpfc: Change lpfc_vport load_flag member into a bitmask
  scsi: lpfc: Change lpfc_vport fc_flag member into a bitmask
  scsi: lpfc: Protect vport fc_nodes list with an explicit spin lock
  scsi: lpfc: Change nlp state statistic counters into atomic_t
  ...

Pull parisc architecture updates and fixes from Helge Deller:
 "Fixes for the IPv4 and IPv6 checksum functions, a fix for the 64-bit
  unaligned memory exception handler and various code cleanups.

  Most of the patches are tagged for stable series.

   - Fix inline assembly in ipv4 and ipv6 checksum functions (Guenter
     Roeck)

   - Rewrite 64-bit inline assembly of emulate_ldd() (Guenter Roeck)

   - Do not clobber carry/borrow bits in tophys and tovirt macros (John
     David Anglin)

   - Warn when kernel accesses unaligned memory"

* tag 'parisc-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: led: Convert to platform remove callback returning void
  parisc: Strip upper 32 bit of sum in csum_ipv6_magic for 64-bit builds
  parisc: Fix csum_ipv6_magic on 64-bit systems
  parisc: Fix csum_ipv6_magic on 32-bit systems
  parisc: Fix ip_fast_csum
  parisc: Avoid clobbering the C/B bits in the PSW with tophys and tovirt macros
  parisc/unaligned: Rewrite 64-bit inline assembly of emulate_ldd()
  parisc: make parisc_bus_type const
  parisc: avoid c23 'nullptr' idenitifier
  parisc: Show kernel unaligned memory accesses
  parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367

When a CPU enters into idle and deactivates itself from the timer
migration hierarchy without any global timer of its own to propagate,
the group event of that CPU is set to "ignore" and tmigr_update_events()
accordingly performs an early return without considering timers queued
by other CPUs.

If the hierarchy has a single level, and the CPU is the last one to
enter idle, it will ignore others' global timers, as in the following
layout:

           [GRP0:0]
         migrator = 0
         active   = 0
         nextevt  = T0i
          /         \
         0           1
      active (T0i)  idle (T1)

0) CPU 0 is active thus its event is ignored (the letter 'i') and so are
upper levels' events. CPU 1 is idle and has the timer T1 enqueued.

           [GRP0:0]
         migrator = NONE
         active   = NONE
         nextevt  = T0i
          /         \
         0           1
      idle (T0i)  idle (T1)

1) CPU 0 goes idle without global event queued. Therefore KTIME_MAX is
pushed as its next expiry and its own event kept as "ignore". As a result
tmigr_update_events() ignores T1 and CPU 0 goes to idle with T1
unhandled.

This isn't proper to single level hierarchy though. A similar issue,
although slightly different, may arise on multi-level:

                            [GRP1:0]
                         migrator = GRP0:0
                         active   = GRP0:0
                         nextevt  = T0:0i, T0:1
                         /              \
              [GRP0:0]                  [GRP0:1]
           migrator = 0              migrator = NONE
           active   = 0              active   = NONE
           nextevt  = T0i            nextevt  = T2
           /         \                /         \
          0 (T0i)     1 (T1)         2 (T2)      3
      active         idle            idle       idle

0) CPU 0 is active thus its event is ignored (the letter 'i') and so are
upper levels' events. CPU 1 is idle and has the timer T1 enqueued.
CPU 2 also has a timer. The expiry order is T0 (ignored) < T1 < T2

                            [GRP1:0]
                         migrator = GRP0:0
                         active   = GRP0:0
                         nextevt  = T0:0i, T0:1
                         /              \
              [GRP0:0]                  [GRP0:1]
           migrator = NONE           migrator = NONE
           active   = NONE           active   = NONE
           nextevt  = T0i            nextevt  = T2
           /         \                /         \
          0 (T0i)     1 (T1)         2 (T2)      3
        idle         idle            idle         idle

1) CPU 0 goes idle without global event queued. Therefore KTIME_MAX is
pushed as its next expiry and its own event kept as "ignore". As a result
tmigr_update_events() ignores T1. The change only propagated up to 1st
level so far.

                            [GRP1:0]
                         migrator = NONE
                         active   = NONE
                         nextevt  = T0:1
                         /              \
              [GRP0:0]                  [GRP0:1]
           migrator = NONE           migrator = NONE
           active   = NONE           active   = NONE
           nextevt  = T0i            nextevt  = T2
           /         \                /         \
          0 (T0i)     1 (T1)         2 (T2)      3
        idle         idle            idle         idle

2) The change now propagates up to the top. tmigr_update_events() finds
that the child event is ignored and thus removes it. The top level next
event is now T2 which is returned to CPU 0 as its next effective expiry
to take account for as the global idle migrator. However T1 has been
ignored along the way, leaving it unhandled.

Fix those issues with removing the buggy related early return. Ignored
child events must not prevent from evaluating the other events within
the same group.
Reported-by: Boqun Feng <boqun.feng@gmail.com>
Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/ZfOhB9ZByTZcBy4u@lothringen

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Bugfixes:
   - Fix for an Oops in the NFSv4.2 listxattr handler
   - Correct an incorrect buffer size in listxattr
   - Fix for an Oops in the pNFS flexfiles layout
   - Fix a refcount leak in NFS O_DIRECT writes
   - Fix missing locking in NFS O_DIRECT
   - Avoid an infinite loop in pnfs_update_layout
   - Fix an overflow in the RPC waitqueue queue length counter
   - Ensure that pNFS I/O is also protected by TLS when xprtsec is
     specified by the mount options
   - Fix a leaked folio lock in the netfs read code
   - Fix a potential deadlock in fscache
   - Allow setting the fscache uniquifier in NFSv4
   - Fix an off by one in root_nfs_cat()
   - Fix another off by one in rpc_sockaddr2uaddr()
   - nfs4_do_open() can incorrectly trigger state recovery
   - Various fixes for connection shutdown

  Features and cleanups:
   - Ensure that containers only see their own RPC and NFS stats
   - Enable nconnect for RDMA
   - Remove dead code from nfs_writepage_locked()
   - Various tracepoint additions to track EXCHANGE_ID, GETDEVICEINFO,
     and mount options"

* tag 'nfs-for-6.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (29 commits)
  nfs: fix panic when nfs4_ff_layout_prepare_ds() fails
  NFS: trace the uniquifier of fscache
  NFS: Read unlock folio on nfs_page_create_from_folio() error
  NFS: remove unused variable nfs_rpcstat
  nfs: fix UAF in direct writes
  nfs: properly protect nfs_direct_req fields
  NFS: enable nconnect for RDMA
  NFSv4: nfs4_do_open() is incorrectly triggering state recovery
  NFS: avoid infinite loop in pnfs_update_layout.
  NFS: remove sync_mode test from nfs_writepage_locked()
  NFSv4.1/pnfs: fix NFS with TLS in pnfs
  NFS: Fix an off by one in root_nfs_cat()
  nfs: make the rpc_stat per net namespace
  nfs: expose /proc/net/sunrpc/nfs in net namespaces
  sunrpc: add a struct rpc_stats arg to rpc_create_args
  nfs: remove unused NFS_CALL macro
  NFSv4.1: add tracepoint to trunked nfs4_exchange_id calls
  NFS: Fix nfs_netfs_issue_read() xarray locking for writeback interrupt
  SUNRPC: increase size of rpc_wait_queue.qlen from unsigned short to unsigned int
  nfs: fix regression in handling of fsc= option in NFSv4
  ...

Pull phy updates from Vinod Koul:
 "New hardware support:

   - Qualcomm X1E80100 PCIe phy support, SM8550 PCIe1 PHY, SC7180 UFS
     PHY and SDM630 USBC support

   - Rockchip HDMI/eDP Combo PHY driver

   - Mediatek MT8365 CSI phy driver

  Updates:

   - Rework on Qualcomm phy PCS registers and type-c handling

   - Cadence torrent phy updates for multilink configuration

   - TI gmii resume support"

* tag 'phy-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (41 commits)
  phy: constify of_phandle_args in xlate
  phy: ti: tusb1210: Define device IDs
  phy: ti: tusb1210: Use temporary variable for struct device
  phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver
  dt-bindings: phy: Add Rockchip HDMI/eDP Combo PHY schema
  phy: ti: gmii-sel: add resume support
  phy: mtk-mipi-csi: add driver for CSI phy
  dt-bindings: phy: add mediatek MIPI CD-PHY module v0.5
  phy: cadence-torrent: Add USXGMII(156.25MHz) + SGMII/QSGMII(100MHz) multilink config for TI J7200
  dt-bindings: phy: cadence-torrent: Add a separate compatible for TI J7200
  phy: cadence-torrent: Add USXGMII(156.25MHz) + SGMII/QSGMII(100MHz) multilink configuration
  phy: cadence-torrent: Add PCIe(100MHz) + USXGMII(156.25MHz) multilink configuration
  dt-bindings: phy: cadence-torrent: Add optional input reference clock for PLL1
  phy: qcom-qmp-ufs: Switch to devm_clk_bulk_get_all() API
  dt-bindings: phy: qmp-ufs: Fix PHY clocks
  phy: qcom: sgmii-eth: move PCS registers to separate header
  phy: qcom: sgmii-eth: use existing register definitions
  phy: qcom: qmp-usbc: drop has_pwrdn_delay handling
  phy: qcom: qmp: move common bits definitions to common header
  phy: qcom: qmp: split DP PHY registers to separate headers
  ...

Merge tag 'firewire-updates-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire updates from Takashi Sakamoto:
 "Small changes to string processing in device attribute"

* tag 'firewire-updates-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: core: fix build failure due to the caller of fw_csr_string()
  firewire: Convert snprintf/sprintf to sysfs_emit
  firewire: Kill unnecessary buf check in device_attribute.show

Pull CXL updates from Dan Williams:
 "CXL has mechanisms to enumerate the performance characteristics of
  memory devices. Those mechanisms allow Linux to build the equivalent
  of ACPI SRAT, SLIT, and HMAT tables dynamically at runtime. That
  capability is necessary because static ACPI can not represent dynamic
  CXL configurations (and reconfigurations).

  So, building on the v6.8 work to add "Quality of Service" enumeration,
  this update plumbs CXL "access coordinates" (read/write access latency
  and bandwidth) in all the same places that ACPI HMAT feeds similar
  data. Follow-on patches from the -mm side can then use that data to
  feed mechanisms like mm/memory-tiers.c. Greg has acked the touch to
  drivers/base/.

  The other feature update this cycle is support for CXL error injection
  via the ACPI EINJ module. That facility enables injection of bus
  protocol errors provided the user knows the magic address values to
  insert in the interface. To hide that magic, and make this easier to
  use, new error injection attributes were added to CXL debugfs. That
  interface injects the errors relative to a CXL object rather than
  require user tooling to know how to lookup and inject RCRB (Root
  Complex Register Block) addresses into the raw EINJ debugfs interface.
  It received some helpful review comments from Tony, but no explicit
  acks from the ACPI side. The primary user visible change for existing
  EINJ users is that they may find that einj.ko was already loaded by
  cxl_core.ko. Previously, einj.ko was only loaded on demand.

  The usual collection of miscellaneous cleanups are also present this
  cycle.

  Summary:

   - Supplement ACPI HMAT reported memory performance with native CXL
     memory performance enumeration

   - Add support for CXL error injection via the ACPI EINJ mechanism

   - Cleanup CXL DOE and CDAT integration

   - Miscellaneous cleanups and fixes"

* tag 'cxl-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (21 commits)
  Documentation/ABI/testing/debugfs-cxl: Fix "Unexpected indentation"
  lib/firmware_table: Provide buffer length argument to cdat_table_parse()
  cxl/pci: Get rid of pointer arithmetic reading CDAT table
  cxl/pci: Rename DOE mailbox handle to doe_mb
  cxl: Fix the incorrect assignment of SSLBIS entry pointer initial location
  cxl/core: Add CXL EINJ debugfs files
  EINJ, Documentation: Update EINJ kernel doc
  EINJ: Add CXL error type support
  EINJ: Migrate to a platform driver
  cxl/region: Deal with numa nodes not enumerated by SRAT
  cxl/region: Add memory hotplug notifier for cxl region
  cxl/region: Add sysfs attribute for locality attributes of CXL regions
  cxl/region: Calculate performance data for a region
  cxl: Set cxlmd->endpoint before adding port device
  cxl: Move QoS class to be calculated from the nearest CPU
  cxl: Split out host bridge access coordinates
  cxl: Split out combine_coordinates() for common shared usage
  ACPI: HMAT / cxl: Add retrieval of generic port coordinates for both access classes
  ACPI: HMAT: Introduce 2 levels of generic port access class
  base/node / ACPI: Enumerate node access class for 'struct access_coordinate'
  ...

We've been seeing the following panic in production

BUG: kernel NULL pointer dereference, address: 0000000000000065
PGD 2f485f067 P4D 2f485f067 PUD 2cc5d8067 PMD 0
RIP: 0010:ff_layout_cancel_io+0x3a/0x90 [nfs_layout_flexfiles]
Call Trace:
 <TASK>
 ? __die+0x78/0xc0
 ? page_fault_oops+0x286/0x380
 ? __rpc_execute+0x2c3/0x470 [sunrpc]
 ? rpc_new_task+0x42/0x1c0 [sunrpc]
 ? exc_page_fault+0x5d/0x110
 ? asm_exc_page_fault+0x22/0x30
 ? ff_layout_free_layoutreturn+0x110/0x110 [nfs_layout_flexfiles]
 ? ff_layout_cancel_io+0x3a/0x90 [nfs_layout_flexfiles]
 ? ff_layout_cancel_io+0x6f/0x90 [nfs_layout_flexfiles]
 pnfs_mark_matching_lsegs_return+0x1b0/0x360 [nfsv4]
 pnfs_error_mark_layout_for_return+0x9e/0x110 [nfsv4]
 ? ff_layout_send_layouterror+0x50/0x160 [nfs_layout_flexfiles]
 nfs4_ff_layout_prepare_ds+0x11f/0x290 [nfs_layout_flexfiles]
 ff_layout_pg_init_write+0xf0/0x1f0 [nfs_layout_flexfiles]
 __nfs_pageio_add_request+0x154/0x6c0 [nfs]
 nfs_pageio_add_request+0x26b/0x380 [nfs]
 nfs_do_writepage+0x111/0x1e0 [nfs]
 nfs_writepages_callback+0xf/0x30 [nfs]
 write_cache_pages+0x17f/0x380
 ? nfs_pageio_init_write+0x50/0x50 [nfs]
 ? nfs_writepages+0x6d/0x210 [nfs]
 ? nfs_writepages+0x6d/0x210 [nfs]
 nfs_writepages+0x125/0x210 [nfs]
 do_writepages+0x67/0x220
 ? generic_perform_write+0x14b/0x210
 filemap_fdatawrite_wbc+0x5b/0x80
 file_write_and_wait_range+0x6d/0xc0
 nfs_file_fsync+0x81/0x170 [nfs]
 ? nfs_file_mmap+0x60/0x60 [nfs]
 __x64_sys_fsync+0x53/0x90
 do_syscall_64+0x3d/0x90
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Inspecting the core with drgn I was able to pull this

  >>> prog.crashed_thread().stack_trace()[0]
  #0 at 0xffffffffa079657a (ff_layout_cancel_io+0x3a/0x84) in ff_layout_cancel_io at fs/nfs/flexfilelayout/flexfilelayout.c:2021:27
  >>> prog.crashed_thread().stack_trace()[0]['idx']
  (u32)1
  >>> prog.crashed_thread().stack_trace()[0]['flseg'].mirror_array[1].mirror_ds
  (struct nfs4_ff_layout_ds *)0xffffffffffffffed

This is clear from the stack trace, we call nfs4_ff_layout_prepare_ds()
which could error out initializing the mirror_ds, and then we go to
clean it all up and our check is only for if (!mirror->mirror_ds).  This
is inconsistent with the rest of the users of mirror_ds, which have

  if (IS_ERR_OR_NULL(mirror_ds))

to keep from tripping over this exact scenario.  Fix this up in
ff_layout_cancel_io() to make sure we don't panic when we get an error.
I also spot checked all the other instances of checking mirror_ds and we
appear to be doing the correct checks everywhere, only unconditionally
dereferencing mirror_ds when we know it would be valid.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Fixes: b739a5bd ("NFSv4/flexfiles: Cancel I/O if the layout is recalled or revoked")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

Update them to the correct revision numbers.

Fixes: 522b1d69 ("x86/cpu/amd: Add a Zenbleed fix")
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull powerpc updates from Michael Ellerman:

 - Add AT_HWCAP3 and AT_HWCAP4 aux vector entries for future use
   by glibc

 - Add support for recognising the Power11 architected and raw PVRs

 - Add support for nr_cpus=n on the command line where the
   boot CPU is >= n

 - Add ppcxx_allmodconfig targets for all 32-bit sub-arches

 - Other small features, cleanups and fixes

Thanks to Akanksha J N, Brian King, Christophe Leroy, Dawei Li, Geoff
Levand, Greg Kroah-Hartman, Jan-Benedict Glaw, Kajol Jain, Kunwu Chan,
Li zeming, Madhavan Srinivasan, Masahiro Yamada, Nathan Chancellor,
Nicholas Piggin, Peter Bergner, Qiheng Lin, Randy Dunlap, Ricardo B.
Marliere, Rob Herring, Sathvika Vasireddy, Shrikanth Hegde, Uwe
Kleine-König, Vaibhav Jain, and Wen Xiong.

* tag 'powerpc-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (71 commits)
  powerpc/macio: Make remove callback of macio driver void returned
  powerpc/83xx: Fix build failure with FPU=n
  powerpc/64s: Fix get_hugepd_cache_index() build failure
  powerpc/4xx: Fix warp_gpio_leds build failure
  powerpc/amigaone: Make several functions static
  powerpc/embedded6xx: Fix no previous prototype for avr_uart_send() etc.
  macintosh/adb: make adb_dev_class constant
  powerpc: xor_vmx: Add '-mhard-float' to CFLAGS
  powerpc/fsl: Fix mfpmr() asm constraint error
  powerpc: Remove cpu-as-y completely
  powerpc/fsl: Modernise mt/mfpmr
  powerpc/fsl: Fix mfpmr build errors with newer binutils
  powerpc/64s: Use .machine power4 around dcbt
  powerpc/64s: Move dcbt/dcbtst sequence into a macro
  powerpc/mm: Code cleanup for __hash_page_thp
  powerpc/hv-gpci: Fix the H_GET_PERF_COUNTER_INFO hcall return value checks
  powerpc/irq: Allow softirq to hardirq stack transition
  powerpc: Stop using of_root
  powerpc/machdep: Define 'compatibles' property in ppc_md and use it
  of: Reimplement of_machine_is_compatible() using of_machine_compatible_match()
  ...

This reverts commits 99101dda and
b80b701d.

Linus reports that the sysreg reserved bit checks in KVM have led to
build failures, arising from commit fdd867fe ("arm64/sysreg: Add
register fields for ID_AA64DFR1_EL1") giving meaning to fields that were
previously RES0.

Of course, this is a genuine issue, since KVM's sysreg emulation depends
heavily on the definition of reserved fields. But at this point the
build breakage is far more offensive, and the right course of action is
to revert and retry later.

All of these build-time assertions were on by default before
commit 99101dda ("KVM: arm64: Make build-time check of RES0/RES1
bits optional"), so deliberately revert it all atomically to avoid
introducing further breakage of bisection.

Link: https://lore.kernel.org/all/CAHk-=whCvkhc8BbFOUf1ddOsgSGgEjwoKv77=HEY1UiVCydGqw@mail.gmail.com/Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Prepare input updates for 6.9 merge window.

Pull block fixes from Jens Axboe:

 - Revert of a change for mq-deadline that went into the 6.8 release,
   causing a performance regression for some (Bart)

 - Revert of the interruptible discard handling. This needs more work
   since the ioctl and fs path aren't properly split, and will happen
   for the 6.10 kernel release. For 6.9, do the minimal revert
   (Christoph)

 - Fix for an issue with the timestamp caching code (me)

 - kerneldoc fix (Jiapeng)

* tag 'block-6.9-20240315' of git://git.kernel.dk/linux:
  block: fix mismatched kerneldoc function name
  Revert "blk-lib: check for kill signal"
  Revert "block/mq-deadline: use correct way to throttling write requests"
  block: limit block time caching to in_task() context

Pull crypto updates from Herbert Xu:
 "API:

   - Avoid unnecessary copying in scomp for trivial SG lists

  Algorithms:

   - Optimise NEON CCM implementation on ARM64

  Drivers:

   - Add queue stop/query debugfs support in hisilicon/qm

   - Intel qat updates and cleanups"

* tag 'v6.9-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (79 commits)
  Revert "crypto: remove CONFIG_CRYPTO_STATS"
  crypto: scomp - remove memcpy if sg_nents is 1 and pages are lowmem
  crypto: tcrypt - add ffdhe2048(dh) test
  crypto: iaa - fix the missing CRYPTO_ALG_ASYNC in cra_flags
  crypto: hisilicon/zip - fix the missing CRYPTO_ALG_ASYNC in cra_flags
  hwrng: hisi - use dev_err_probe
  MAINTAINERS: Remove T Ambarus from few mchp entries
  crypto: iaa - Fix comp/decomp delay statistics
  crypto: iaa - Fix async_disable descriptor leak
  dt-bindings: rng: atmel,at91-trng: add sam9x7 TRNG
  dt-bindings: crypto: add sam9x7 in Atmel TDES
  dt-bindings: crypto: add sam9x7 in Atmel SHA
  dt-bindings: crypto: add sam9x7 in Atmel AES
  crypto: remove CONFIG_CRYPTO_STATS
  crypto: dh - Make public key test FIPS-only
  crypto: rockchip - fix to check return value
  crypto: jitter - fix CRYPTO_JITTERENTROPY help text
  crypto: qat - make ring to service map common for QAT GEN4
  crypto: qat - fix ring to service map for dcc in 420xx
  crypto: qat - fix ring to service map for dcc in 4xxx
  ...

Pull VFIO updates from Alex Williamson:

 - Add warning in unlikely case that device is not captured with
   driver_override (Kunwu Chan)

 - Error handling improvements in mlx5-vfio-pci to detect firmware
   tracking object error states, logging of firmware error syndrom, and
   releasing of firmware resources in aborted migration sequence (Yishai
   Hadas)

 - Correct an un-alphabetized VFIO MAINTAINERS entry (Alex Williamson)

 - Make the mdev_bus_type const and also make the class struct const for
   a couple of the vfio-mdev sample drivers (Ricardo B. Marliere)

 - Addition of a new vfio-pci variant driver for the GPU of NVIDIA's
   Grace-Hopper superchip. During initialization of the chip-to-chip
   interconnect in this hardware module, the PCI BARs of the device
   become unused in favor of a faster, coherent mechanism for exposing
   device memory. This driver primarily changes the VFIO representation
   of the device to masquerade this coherent aperture to replace the
   physical PCI BARs for userspace drivers. This also incorporates use
   of a new vma flag allowing KVM to use write combining attributes for
   uncached device memory (Ankit Agrawal)

 - Reset fixes and cleanups for the pds-vfio-pci driver. Save and
   restore files were previously leaked if the device didn't pass
   through an error state, this is resolved and later re-fixed to
   prevent access to the now freed files. Reset handling is also
   refactored to remove the complicated deferred reset mechanism (Brett
   Creeley)

 - Remove some references to pl330 in the vfio-platform amba driver
   (Geert Uytterhoeven)

 - Remove twice redundant and ugly code to unpin incidental pins of the
   zero-page (Alex Williamson)

 - Deferred reset logic is also removed from the hisi-acc-vfio-pci
   driver as a simplification (Shameer Kolothum)

 - Enforce that mlx5-vfio-pci devices must support PRE_COPY and remove
   resulting unnecessary code. There is no device firmware that has been
   available publicly without this support (Yishai Hadas)

 - Switch over to using the .remove_new callback for vfio-platform in
   support of the broader transition for a void remove function (Uwe
   Kleine-König)

 - Resolve multiple issues in interrupt code for VFIO bus drivers that
   allow calling eventfd_signal() on a NULL context. This also remove a
   potential race in INTx setup on certain hardware for vfio-pci, races
   with various mechanisms to mask INTx, and leaked virqfds in
   vfio-platform (Alex Williamson)

* tag 'vfio-v6.9-rc1' of https://github.com/awilliam/linux-vfio: (29 commits)
  vfio/fsl-mc: Block calling interrupt handler without trigger
  vfio/platform: Create persistent IRQ handlers
  vfio/platform: Disable virqfds on cleanup
  vfio/pci: Create persistent INTx handler
  vfio: Introduce interface to flush virqfd inject workqueue
  vfio/pci: Lock external INTx masking ops
  vfio/pci: Disable auto-enable of exclusive INTx IRQ
  vfio/pds: Refactor/simplify reset logic
  vfio/pds: Make sure migration file isn't accessed after reset
  vfio/platform: Convert to platform remove callback returning void
  vfio/mlx5: Enforce PRE_COPY support
  vfio/mbochs: make mbochs_class constant
  vfio/mdpy: make mdpy_class constant
  hisi_acc_vfio_pci: Remove the deferred_reset logic
  Revert "vfio/type1: Unpin zero pages"
  vfio/nvgrace-gpu: Convey kvm to map device memory region as noncached
  vfio: amba: Rename pl330_ids[] to vfio_amba_ids[]
  vfio/pds: Always clear the save/restore FDs on reset
  vfio/nvgrace-gpu: Add vfio pci variant module for grace hopper
  vfio/pci: rename and export range_intersect_range
  ...

Pull kvm updates from Paolo Bonzini:
 "S390:

   - Changes to FPU handling came in via the main s390 pull request

   - Only deliver to the guest the SCLP events that userspace has
     requested

   - More virtual vs physical address fixes (only a cleanup since
     virtual and physical address spaces are currently the same)

   - Fix selftests undefined behavior

  x86:

   - Fix a restriction that the guest can't program a PMU event whose
     encoding matches an architectural event that isn't included in the
     guest CPUID. The enumeration of an architectural event only says
     that if a CPU supports an architectural event, then the event can
     be programmed *using the architectural encoding*. The enumeration
     does NOT say anything about the encoding when the CPU doesn't
     report support the event *in general*. It might support it, and it
     might support it using the same encoding that made it into the
     architectural PMU spec

   - Fix a variety of bugs in KVM's emulation of RDPMC (more details on
     individual commits) and add a selftest to verify KVM correctly
     emulates RDMPC, counter availability, and a variety of other
     PMC-related behaviors that depend on guest CPUID and therefore are
     easier to validate with selftests than with custom guests (aka
     kvm-unit-tests)

   - Zero out PMU state on AMD if the virtual PMU is disabled, it does
     not cause any bug but it wastes time in various cases where KVM
     would check if a PMC event needs to be synthesized

   - Optimize triggering of emulated events, with a nice ~10%
     performance improvement in VM-Exit microbenchmarks when a vPMU is
     exposed to the guest

   - Tighten the check for "PMI in guest" to reduce false positives if
     an NMI arrives in the host while KVM is handling an IRQ VM-Exit

   - Fix a bug where KVM would report stale/bogus exit qualification
     information when exiting to userspace with an internal error exit
     code

   - Add a VMX flag in /proc/cpuinfo to report 5-level EPT support

   - Rework TDP MMU root unload, free, and alloc to run with mmu_lock
     held for read, e.g. to avoid serializing vCPUs when userspace
     deletes a memslot

   - Tear down TDP MMU page tables at 4KiB granularity (used to be
     1GiB). KVM doesn't support yielding in the middle of processing a
     zap, and 1GiB granularity resulted in multi-millisecond lags that
     are quite impolite for CONFIG_PREEMPT kernels

   - Allocate write-tracking metadata on-demand to avoid the memory
     overhead when a kernel is built with i915 virtualization support
     but the workloads use neither shadow paging nor i915 virtualization

   - Explicitly initialize a variety of on-stack variables in the
     emulator that triggered KMSAN false positives

   - Fix the debugregs ABI for 32-bit KVM

   - Rework the "force immediate exit" code so that vendor code
     ultimately decides how and when to force the exit, which allowed
     some optimization for both Intel and AMD

   - Fix a long-standing bug where kvm_has_noapic_vcpu could be left
     elevated if vCPU creation ultimately failed, causing extra
     unnecessary work

   - Cleanup the logic for checking if the currently loaded vCPU is
     in-kernel

   - Harden against underflowing the active mmu_notifier invalidation
     count, so that "bad" invalidations (usually due to bugs elsehwere
     in the kernel) are detected earlier and are less likely to hang the
     kernel

  x86 Xen emulation:

   - Overlay pages can now be cached based on host virtual address,
     instead of guest physical addresses. This removes the need to
     reconfigure and invalidate the cache if the guest changes the gpa
     but the underlying host virtual address remains the same

   - When possible, use a single host TSC value when computing the
     deadline for Xen timers in order to improve the accuracy of the
     timer emulation

   - Inject pending upcall events when the vCPU software-enables its
     APIC to fix a bug where an upcall can be lost (and to follow Xen's
     behavior)

   - Fall back to the slow path instead of warning if "fast" IRQ
     delivery of Xen events fails, e.g. if the guest has aliased xAPIC
     IDs

  RISC-V:

   - Support exception and interrupt handling in selftests

   - New self test for RISC-V architectural timer (Sstc extension)

   - New extension support (Ztso, Zacas)

   - Support userspace emulation of random number seed CSRs

  ARM:

   - Infrastructure for building KVM's trap configuration based on the
     architectural features (or lack thereof) advertised in the VM's ID
     registers

   - Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to
     x86's WC) at stage-2, improving the performance of interacting with
     assigned devices that can tolerate it

   - Conversion of KVM's representation of LPIs to an xarray, utilized
     to address serialization some of the serialization on the LPI
     injection path

   - Support for _architectural_ VHE-only systems, advertised through
     the absence of FEAT_E2H0 in the CPU's ID register

   - Miscellaneous cleanups, fixes, and spelling corrections to KVM and
     selftests

  LoongArch:

   - Set reserved bits as zero in CPUCFG

   - Start SW timer only when vcpu is blocking

   - Do not restart SW timer when it is expired

   - Remove unnecessary CSR register saving during enter guest

   - Misc cleanups and fixes as usual

  Generic:

   - Clean up Kconfig by removing CONFIG_HAVE_KVM, which was basically
     always true on all architectures except MIPS (where Kconfig
     determines the available depending on CPU capabilities). It is
     replaced either by an architecture-dependent symbol for MIPS, and
     IS_ENABLED(CONFIG_KVM) everywhere else

   - Factor common "select" statements in common code instead of
     requiring each architecture to specify it

   - Remove thoroughly obsolete APIs from the uapi headers

   - Move architecture-dependent stuff to uapi/asm/kvm.h

   - Always flush the async page fault workqueue when a work item is
     being removed, especially during vCPU destruction, to ensure that
     there are no workers running in KVM code when all references to
     KVM-the-module are gone, i.e. to prevent a very unlikely
     use-after-free if kvm.ko is unloaded

   - Grab a reference to the VM's mm_struct in the async #PF worker
     itself instead of gifting the worker a reference, so that there's
     no need to remember to *conditionally* clean up after the worker

  Selftests:

   - Reduce boilerplate especially when utilize selftest TAP
     infrastructure

   - Add basic smoke tests for SEV and SEV-ES, along with a pile of
     library support for handling private/encrypted/protected memory

   - Fix benign bugs where tests neglect to close() guest_memfd files"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (246 commits)
  selftests: kvm: remove meaningless assignments in Makefiles
  KVM: riscv: selftests: Add Zacas extension to get-reg-list test
  RISC-V: KVM: Allow Zacas extension for Guest/VM
  KVM: riscv: selftests: Add Ztso extension to get-reg-list test
  RISC-V: KVM: Allow Ztso extension for Guest/VM
  RISC-V: KVM: Forward SEED CSR access to user space
  KVM: riscv: selftests: Add sstc timer test
  KVM: riscv: selftests: Change vcpu_has_ext to a common function
  KVM: riscv: selftests: Add guest helper to get vcpu id
  KVM: riscv: selftests: Add exception handling support
  LoongArch: KVM: Remove unnecessary CSR register saving during enter guest
  LoongArch: KVM: Do not restart SW timer when it is expired
  LoongArch: KVM: Start SW timer only when vcpu is blocking
  LoongArch: KVM: Set reserved bits as zero in CPUCFG
  KVM: selftests: Explicitly close guest_memfd files in some gmem tests
  KVM: x86/xen: fix recursive deadlock in timer injection
  KVM: pfncache: simplify locking and make more self-contained
  KVM: x86/xen: remove WARN_ON_ONCE() with false positives in evtchn delivery
  KVM: x86/xen: inject vCPU upcall vector when local APIC is enabled
  KVM: x86/xen: improve accuracy of Xen timers
  ...

Merge tag 'sparc-for-6.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc

Pull sparc updates from Andreas Larsson:

 - Fix missing prototype warnings in various places, including switching
   to using generic cmpdi2/ucmpdi2 and parport.h and stop selecting
   unneeded GENERIC_ISA_DMA.

 - Reduce duplicate code by using shared font data, with dependency
   fixup in separate commit touching lib/fonts.

 - Convert sbus drives to use remove callbacks returning void

 - Fix return values of __setup handlers

 - Section mismatch fix for grpci pci drivers

 - Make the vio bus type constant

 - Kconfig cleanups and fixes

 - Typo fixes

* tag 'sparc-for-6.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc:
  lib/fonts: Allow Sparc console 8x16 font for sparc64 early boot text console
  sbus: uctrl: Convert to platform remove callback returning void
  sbus: flash: Convert to platform remove callback returning void
  sbus: envctrl: Convert to platform remove callback returning void
  sbus: display7seg: Convert to platform remove callback returning void
  sbus: bbc_i2c: Convert to platform remove callback returning void
  sbus: Add prototype for bbc_envctrl_init and bbc_envctrl_cleanup to header
  sparc32: Fix section mismatch in leon_pci_grpci
  sparc32: Fix parport build with sparc32
  sparc32: Do not select GENERIC_ISA_DMA
  mtd: maps: sun_uflash: Declare uflash_devinit static
  sparc32: Fix build with trapbase
  sparc32: Use generic cmpdi2/ucmpdi2 variants
  sparc: select FRAME_POINTER instead of redefining it
  sparc: vDSO: fix return value of __setup handler
  sparc64: NMI watchdog: fix return value of __setup handler
  sparc: vio: make vio_bus_type const
  sparc: Fix typos
  sparc: Use shared font data
  sparc: remove obsolete config ARCH_ATU

Pull MIPS updates from Thomas Bogendoerfer:

 - added support for Mobileye SoCs

 - unified GPR/CP0 regs handling for uasm

 - cleanups and fixes

* tag 'mips_6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (56 commits)
  mips: cm: Convert __mips_cm_phys_base() to weak function
  mips: cm: Convert __mips_cm_l2sync_phys_base() to weak function
  mips: dts: ralink: mt7621: add cell count properties to usb
  mips: dts: ralink: mt7621: add serial1 and serial2 nodes
  mips: dts: ralink: mt7621: reorder serial0 properties
  mips: dts: ralink: mt7621: associate uart1_pins with serial0
  MIPS: ralink: Don't use "proxy" headers
  mips: sibyte: make tb_class constant
  mips: mt: make mt_class constant
  MIPS: ralink: Remove unused of_gpio.h
  bus: bt1-apb: Remove duplicate include
  MAINTAINERS: remove entry to non-existing file in MOBILEYE MIPS SOCS
  MIPS: mipsregs: Parse fp and sp register by name in parse_r
  tty: mips_ejtag_fdc: Fix passing incompatible pointer type warning
  mips: zboot: Fix "no previous prototype" build warning
  MIPS: mipsregs: Set proper ISA level for virt extensions
  MIPS: Implement microMIPS MT ASE helpers
  MIPS: Limit MIPS_MT_SMP support by ISA reversion
  MIPS: Loongson64: test for -march=loongson3a cflag
  MIPS: BMIPS: Drop unnecessary assembler flag
  ...

Pull devicetree updates from Rob Herring:
 "DT core:

   - Add cleanup.h based auto release of struct device_node pointers via
     __free marking and new for_each_child_of_node_scoped() iterator to
     use it.

   - Always create a base skeleton DT when CONFIG_OF is enabled. This
     supports several usecases of adding DT data on non-DT booted
     systems.

   - Move around some /reserved-memory code in preparation for further
     improvements

   - Add a stub for_each_property_of_node() for !OF

   - Adjust the printk levels on some messages

   - Fix __be32 sparse warning

   - Drop RESERVEDMEM_OF_DECLARE usage from Freescale qbman driver
     (currently orphaned)

   - Add Saravana Kannan and drop Frank Rowand as DT maintainers

  DT bindings:

   - Convert Mediatek timer, Mediatek sysirq, fsl,imx6ul-tsc,
     fsl,imx6ul-pinctrl, Atmel AIC, Atmel HLCDC, FPGA region, and
     xlnx,sd-fec to DT schemas

   - Add existing, but undocumented fsl,imx-anatop binding

   - Add bunch of undocumented vendor prefixes used in compatible
     strings

   - Drop obsolete brcm,bcm2835-pm-wdt binding

   - Drop obsolete i2c.txt which as been replaced with schema in
     dtschema

   - Add DPS310 device and sort trivial-devices.yaml

   - Enable undocumented compatible checks on DT binding examples

   - More QCom maintainer fixes/updates

   - Updates to writing-schema.rst and DT submitting-patches.rst to
     cover some frequent review comments

   - Clean-up SPDX tags to use 'OR' rather than 'or'"

* tag 'devicetree-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (56 commits)
  dt-bindings: soc: imx: fsl,imx-anatop: add imx6q regulators
  of: unittest: Use for_each_child_of_node_scoped()
  of: Introduce for_each_*_child_of_node_scoped() to automate of_node_put() handling
  of: Add cleanup.h based auto release via __free(device_node) markings
  of: Move all FDT reserved-memory handling into of_reserved_mem.c
  of: Add KUnit test to confirm DTB is loaded
  of: unittest: treat missing of_root as error instead of fixing up
  x86/of: Unconditionally call unflatten_and_copy_device_tree()
  um: Unconditionally call unflatten_device_tree()
  of: Create of_root if no dtb provided by firmware
  of: Always unflatten in unflatten_and_copy_device_tree()
  dt-bindings: timer: mediatek: Convert to json-schema
  dt-bindings: interrupt-controller: fsl,intmux: Include power-domains support
  soc: fsl: qbman: Remove RESERVEDMEM_OF_DECLARE usage
  dt-bindings: fsl-imx-sdma: fix HDMI audio index
  dt-bindings: soc: imx: fsl,imx-iomuxc-gpr: add imx6
  dt-bindings: soc: imx: fsl,imx-anatop: add binding
  dt-bindings: input: touchscreen: fsl,imx6ul-tsc convert to YAML
  dt-bindings: pinctrl: fsl,imx6ul-pinctrl: convert to YAML
  of: make for_each_property_of_node() available to to !OF
  ...