The relocated kernel image is copied to its new location using memcpy().
On architectures with separate instruction and data caches, the copied
instructions may remain stale in the instruction cache, leading to the
execution of outdated contents.

Call efi_cache_sync_image() after the relocation copy to ensure the
instruction cache is synchronized with the updated memory contents before
control is transferred to the relocated kernel.

Signed-off-by: WANG Rui <r@hev.cc>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

Provide a LoongArch implementation of efi_cache_sync_image() to ensure
instruction cache coherency after the kernel image is relocated.

Signed-off-by: WANG Rui <r@hev.cc>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

LoongArch is the only arch that still uses efi_relocate_kernel(), so
before making changes to it that LoongArch needs, turn it into a private
function. Move efi_low_alloc_above() into mem.c while at it, and drop
the relocate.c source file altogether.

Tested-by: WANG Rui <wangrui@loongson.cn>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

If kzalloc fails, the function returns -ENOMEM without calling
efivar_unlock(). Since open() returned  an error, the calling site
in pstore_get_backend_records() won't call the close() function, so
the lock is never released. Thus drop the lock in case of errors here.

Fixes: 859748255b434 ("efi: pstore: Omit efivars caching EFI varstore access layer")
Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

Pull LoongArch updates from Huacai Chen:

 - Adjust build infrastructure for 32BIT/64BIT

 - Add HIGHMEM (PKMAP and FIX_KMAP) support

 - Show and handle CPU vulnerabilites correctly

 - Batch the icache maintenance for jump_label

 - Add more atomic instructions support for BPF JIT

 - Add more features (e.g. fsession) support for BPF trampoline

 - Some bug fixes and other small changes

* tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits)
  selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch
  LoongArch: BPF: Add fsession support for trampolines
  LoongArch: BPF: Introduce emit_store_stack_imm64() helper
  LoongArch: BPF: Support up to 12 function arguments for trampoline
  LoongArch: BPF: Support small struct arguments for trampoline
  LoongArch: BPF: Open code and remove invoke_bpf_mod_ret()
  LoongArch: BPF: Support load-acquire and store-release instructions
  LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions
  LoongArch: BPF: Add the default case in emit_atomic() and rename it
  LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR
  LoongArch: Batch the icache maintenance for jump_label
  LoongArch: Add flush_icache_all()/local_flush_icache_all()
  LoongArch: Add spectre boundry for syscall dispatch table
  LoongArch: Show CPU vulnerabilites correctly
  LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist
  LoongArch: Use get_random_canary() for stack canary init
  LoongArch: Improve the logging of disabling KASLR
  LoongArch: Align FPU register state to 32 bytes
  LoongArch: Handle CONFIG_32BIT in syscall_get_arch()
  LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support
  ...

Adjust build infrastructure (Kconfig, Makefile and ld scripts) to let
us enable both 32BIT/64BIT kernel build.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Pull memblock updates from Mike Rapoport:

 - improve debuggability of reserve_mem kernel parameter handling with
   print outs in case of a failure and debugfs info showing what was
   actually reserved

 - Make memblock_free_late() and free_reserved_area() use the same core
   logic for freeing the memory to buddy and ensure it takes care of
   updating memblock arrays when ARCH_KEEP_MEMBLOCK is enabled.

* tag 'memblock-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  x86/alternative: delay freeing of smp_locks section
  memblock: warn when freeing reserved memory before memory map is initialized
  memblock, treewide: make memblock_free() handle late freeing
  memblock: make free_reserved_area() update memblock if ARCH_KEEP_MEMBLOCK=y
  memblock: extract page freeing from free_reserved_area() into a helper
  memblock: make free_reserved_area() more robust
  mm: move free_reserved_area() to mm/memblock.c
  powerpc: opal-core: pair alloc_pages_exact() with free_pages_exact()
  powerpc: fadump: pair alloc_pages_exact() with free_pages_exact()
  memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name()
  memblock: move reserve_bootmem_range() to memblock.c and make it static
  memblock: Add reserve_mem debugfs info
  memblock: Print out errors on reserve_mem parser

Pull SoC driver updates from Arnd Bergmann:
 "The driver updates again are all over the place with many minor fixes
  going into platform specific code. The most notable changes are:

   - Support for Microchip pic64gx system controllers
   - Work on cleaning up devicetree bindings for SoC drivers, and
     converting them into the new format
   - Lots of smaller changes for Qualcomm SoC drivers, including support
     for a number of newly supported chips
   - reset controller API cleanups and a new driver for Cix Sky1
   - Reworks of the Tegra PMC and CBB drivers, along with a change to
     how individual Tegra SoCs get selected in Kconfig and BPMP firmware
     driver updates including a refresh of the ABI header to match the
     version used by firmware
   - STM32 updates to the firewall bus driver and support for the debug
     bus through OP-TEE
   - SCMI firmware driver improvements for reliability, in particular
     for dealing with broken firmware interrupts
   - Memory driver updates for Tegra, and a patch to remove the unused
     Baikal T1 driver"

* tag 'soc-drivers-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (193 commits)
  firmware: arm_ffa: Use the correct buffer size during RXTX_MAP
  firmware: qcom: scm: Allow QSEECOM on Lenovo IdeaCentre Mini X
  clk: spear: fix resource leak in clk_register_vco_pll()
  reset: rzv2h-usb2phy: Add support for VBUS mux controller registration
  reset: rzv2h-usb2phy: Convert to regmap API
  dt-bindings: reset: renesas,rzv2h-usb2phy: Document RZ/G3E USB2PHY reset
  dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property
  soc: microchip: add mpfs gpio interrupt mux driver
  dt-bindings: soc: microchip: document PolarFire SoC's gpio interrupt mux
  gpio: mpfs: Add interrupt support
  soc: qcom: ubwc: add helpers to get programmable values
  soc: qcom: ubwc: add helper to get min_acc length
  firmware: qcom: scm: Register gunyah watchdog device
  soc: qcom: socinfo: Add SoC ID for SA8650P
  dt-bindings: arm: qcom,ids: Add SoC ID for SA8650P
  firmware: qcom: scm: Allow QSEECOM on Mahua CRD
  soc: qcom: wcnss: simplify allocation of req
  soc: qcom: pd-mapper: Add support for Eliza
  soc: qcom: aoss: compare against normalized cooling state
  soc: qcom: llcc: fix v1 SB syndrome register offset
  ...

Pull EFI updates from Ard Biesheuvel:
 "Again not a busy cycle for EFI, just some minor tweaks and bug fixes:

   - Enable boot graphics resource table (BGRT) on Xen/x86

   - Correct a misguided assumption in the memory attributes table
     sanity check

   - Start tagging efi_mem_reserve()'d regions as MEMBLOCK_RSRV_KERN

   - Some other minor fixes and cleanups"

* tag 'efi-next-for-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi/capsule-loader: fix incorrect sizeof in phys array reallocation
  efi: Tag memblock reservations of boot services regions as RSRV_KERN
  memblock: Permit existing reserved regions to be marked RSRV_KERN
  efi/memattr: Fix thinko in table size sanity check
  efi: libstub: fix type of fdt 32 and 64bit variables
  efi: Drop unused efi_range_is_wc() function
  efi: Enable BGRT loading under Xen
  efi: make efi_mem_type() and efi_mem_attributes() work on Xen PV

Pull workqueue updates from Tejun Heo:

 - New default WQ_AFFN_CACHE_SHARD affinity scope subdivides LLCs into
   smaller shards to improve scalability on machines with many CPUs per
   LLC

 - Misc:
    - system_dfl_long_wq for long unbound works
    - devm_alloc_workqueue() for device-managed allocation
    - sysfs exposure for ordered workqueues and the EFI workqueue
    - removal of HK_TYPE_WQ from wq_unbound_cpumask
    - various small fixes

* tag 'wq-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (21 commits)
  workqueue: validate cpumask_first() result in llc_populate_cpu_shard_id()
  workqueue: use NR_STD_WORKER_POOLS instead of hardcoded value
  workqueue: avoid unguarded 64-bit division
  docs: workqueue: document WQ_AFFN_CACHE_SHARD affinity scope
  workqueue: add test_workqueue benchmark module
  tools/workqueue: add CACHE_SHARD support to wq_dump.py
  workqueue: set WQ_AFFN_CACHE_SHARD as the default affinity scope
  workqueue: add WQ_AFFN_CACHE_SHARD affinity scope
  workqueue: fix typo in WQ_AFFN_SMT comment
  workqueue: Remove HK_TYPE_WQ from affecting wq_unbound_cpumask
  workqueue: unlink pwqs from wq->pwqs list in alloc_and_link_pwqs() error path
  workqueue: Remove NULL wq WARN in __queue_delayed_work()
  workqueue: fix parse_affn_scope() prefix matching bug
  workqueue: devres: Add device-managed allocate workqueue
  workqueue: Add system_dfl_long_wq for long unbound works
  tools/workqueue/wq_dump.py: add NODE prefix to all node columns
  tools/workqueue/wq_dump.py: fix column alignment in node_nr/max_active section
  tools/workqueue/wq_dump.py: remove backslash separator from node_nr/max_active header
  efi: Allow to expose the workqueue via sysfs
  workqueue: Allow to expose ordered workqueues via sysfs
  ...