commit 29956748339aa8757a7e2f927a8679dd08f24bb6 upstream.

It was meant well at the time but nothing's using it so get rid of it.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20240202163510.GDZb0Zvj8qOndvFOiZ@fat_crate.local
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit 8076fcde016c9c0e0660543e67bff86cb48a7c9c upstream.

RFDS is a CPU vulnerability that may allow userspace to infer kernel
stale data previously used in floating point registers, vector registers
and integer registers. RFDS only affects certain Intel Atom processors.

Intel released a microcode update that uses VERW instruction to clear
the affected CPU buffers. Unlike MDS, none of the affected cores support
SMT.

Add RFDS bug infrastructure and enable the VERW based mitigation by
default, that clears the affected buffers just before exiting to
userspace. Also add sysfs reporting and cmdline parameter
"reg_file_data_sampling" to control the mitigation.

For details see:
Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit 4e42765d1be01111df0c0275bbaf1db1acef346e upstream.

Add the documentation for transient execution vulnerability Register
File Data Sampling (RFDS) that affects Intel Atom CPUs.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Commit 1db9d06aaa55 ("mm/slab: remove CONFIG_SLAB from all Kconfig and
Makefile") removes the config SLAB and makes the SLUB allocator the only
default allocator in the kernel. Hence, the advice on reducing OS jitter
due to kworker kernel threads to build with CONFIG_SLUB instead of
CONFIG_SLAB is obsolete.

Remove the obsolete advice to build with SLUB instead of SLAB.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231130095515.21586-1-lukas.bulwahn@gmail.com

This comment about DRM drivers has been there since the first git
commit. It simply doesn't belong in kernel-parameters; remove it.

Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240111085220.3693059-1-vegard.nossum@oracle.com

Pull smb client updates from Steve French:
 "Various smb client fixes, including multichannel and for SMB3.1.1
  POSIX extensions:

   - debugging improvement (display start time for stats)

   - two reparse point handling fixes

   - various multichannel improvements and fixes

   - SMB3.1.1 POSIX extensions open/create parsing fix

   - retry (reconnect) improvement including new retrans mount parm, and
     handling of two additional return codes that need to be retried on

   - two minor cleanup patches and another to remove duplicate query
     info code

   - two documentation cleanup, and one reviewer email correction"

* tag 'v6.8-rc-part2-smb-client' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: update iface_last_update on each query-and-update
  cifs: handle servers that still advertise multichannel after disabling
  cifs: new mount option called retrans
  cifs: reschedule periodic query for server interfaces
  smb: client: don't clobber ->i_rdev from cached reparse points
  smb: client: get rid of smb311_posix_query_path_info()
  smb: client: parse owner/group when creating reparse points
  smb: client: fix parsing of SMB3.1.1 POSIX create context
  cifs: update known bugs mentioned in kernel docs for cifs
  cifs: new nt status codes from MS-SMB2
  cifs: pick channel for tcon and tdis
  cifs: open_cached_dir should not rely on primary channel
  smb3: minor documentation updates
  Update MAINTAINERS email address
  cifs: minor comment cleanup
  smb3: show beginning time for per share stats
  cifs: remove redundant variable tcon_exist

Pull LoongArch updates from Huacai Chen:

 - Raise minimum clang version to 18.0.0

 - Enable initial Rust support for LoongArch

 - Add built-in dtb support for LoongArch

 - Use generic interface to support crashkernel=X,[high,low]

 - Some bug fixes and other small changes

 - Update the default config file.

* tag 'loongarch-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (22 commits)
  MAINTAINERS: Add BPF JIT for LOONGARCH entry
  LoongArch: Update Loongson-3 default config file
  LoongArch: BPF: Prevent out-of-bounds memory access
  LoongArch: BPF: Support 64-bit pointers to kfuncs
  LoongArch: Fix definition of ftrace_regs_set_instruction_pointer()
  LoongArch: Use generic interface to support crashkernel=X,[high,low]
  LoongArch: Fix and simplify fcsr initialization on execve()
  LoongArch: Let cores_io_master cover the largest NR_CPUS
  LoongArch: Change SHMLBA from SZ_64K to PAGE_SIZE
  LoongArch: Add a missing call to efi_esrt_init()
  LoongArch: Parsing CPU-related information from DTS
  LoongArch: dts: DeviceTree for Loongson-2K2000
  LoongArch: dts: DeviceTree for Loongson-2K1000
  LoongArch: dts: DeviceTree for Loongson-2K0500
  LoongArch: Allow device trees be built into the kernel
  dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for interrupt-names
  dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for reg-names
  dt-bindings: loongarch: Add Loongson SoC boards compatibles
  dt-bindings: loongarch: Add CPU bindings for LoongArch
  LoongArch: Enable initial Rust support
  ...

Remove bugs that have been addressed and add link to xfstest results
wiki.

Signed-off-by: Steve French <stfrench@microsoft.com>

Update the usage documentation to include some missing
configuration options.  Update the todo list documentation
for cifs.ko

Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt changes for 6.8-rc1.
  Included in here are the following:

   - Thunderbolt subsystem and driver updates for USB 4 hardware and
     issues reported by real devices

   - xhci driver updates

   - dwc3 driver updates

   - uvc_video gadget driver updates

   - typec driver updates

   - gadget string functions cleaned up

   - other small changes

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

* tag 'usb-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits)
  usb: typec: tipd: fix use of device-specific init function
  usb: typec: tipd: Separate reset for TPS6598x
  usb: mon: Fix atomicity violation in mon_bin_vma_fault
  usb: gadget: uvc: Remove nested locking
  usb: gadget: uvc: Fix use are free during STREAMOFF
  usb: typec: class: fix typec_altmode_put_partner to put plugs
  dt-bindings: usb: dwc3: Limit num-hc-interrupters definition
  dt-bindings: usb: xhci: Add num-hc-interrupters definition
  xhci: add support to allocate several interrupters
  USB: core: Use device_driver directly in struct usb_driver and usb_device_driver
  arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry
  usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer
  dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue
  arm64: dts: qcom: msm8996: Remove PNoC clock from MSS
  arm64: dts: qcom: msm8996: Remove AGGRE2 clock from SLPI
  arm64: dts: qcom: msm8998: Remove AGGRE2 clock from SLPI
  arm64: dts: qcom: msm8939: Drop RPM bus clocks
  arm64: dts: qcom: sdm630: Drop RPM bus clocks
  arm64: dts: qcom: qcs404: Drop RPM bus clocks
  arm64: dts: qcom: msm8996: Drop RPM bus clocks
  ...