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226,193 commits

Author SHA1 Message Date
Linus Torvalds
3f749befb0 x86: kvm: fix build error
The cpu_emergency_register_virt_callback() function is used
unconditionally by the x86 kvm code, but it is declared (and defined)
conditionally:

  #if IS_ENABLED(CONFIG_KVM_INTEL) || IS_ENABLED(CONFIG_KVM_AMD)
  void cpu_emergency_register_virt_callback(cpu_emergency_virt_cb *callback);
  ...

leading to a build error when neither KVM_INTEL nor KVM_AMD support is
enabled:

  arch/x86/kvm/x86.c: In function ‘kvm_arch_enable_virtualization’:
  arch/x86/kvm/x86.c:12517:9: error: implicit declaration of function ‘cpu_emergency_register_virt_callback’ [-Wimplicit-function-declaration]
  12517 |         cpu_emergency_register_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  arch/x86/kvm/x86.c: In function ‘kvm_arch_disable_virtualization’:
  arch/x86/kvm/x86.c:12522:9: error: implicit declaration of function ‘cpu_emergency_unregister_virt_callback’ [-Wimplicit-function-declaration]
  12522 |         cpu_emergency_unregister_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fix the build by defining empty helper functions the same way the old
cpu_emergency_disable_virtualization() function was dealt with for the
same situation.

Maybe we could instead have made the call sites conditional, since the
callers (kvm_arch_{en,dis}able_virtualization()) have an empty weak
fallback.  I'll leave that to the kvm people to argue about, this at
least gets the build going for that particular config.

Fixes: 590b09b1d8 ("KVM: x86: Register "emergency disable" callbacks when virt is enabled")
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Kai Huang <kai.huang@intel.com>
Cc: Chao Gao <chao.gao@intel.com>
Cc: Farrah Chen <farrah.chen@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-09-29 14:47:33 -07:00
Linus Torvalds
d37421e655 Fix TDX MMIO #VE fault handling, and add two new Intel model numbers
for "Pantherlake" and "Diamond Rapids".
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Fix TDX MMIO #VE fault handling, and add two new Intel model numbers
  for 'Pantherlake' and 'Diamond Rapids'"

* tag 'x86-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Add two Intel CPU model numbers
  x86/tdx: Fix "in-kernel MMIO" check
2024-09-29 09:10:00 -07:00
Linus Torvalds
ec03de73b1 Locking changes for v6.12:
- lockdep:
     - Fix potential deadlock between lockdep and RCU (Zhiguo Niu)
     - Use str_plural() to address Coccinelle warning (Thorsten Blum)
     - Add debuggability enhancement (Luis Claudio R. Goncalves)
 
  - static keys & calls:
     - Fix static_key_slow_dec() yet again (Peter Zijlstra)
     - Handle module init failure correctly in static_call_del_module() (Thomas Gleixner)
     - Replace pointless WARN_ON() in static_call_module_notify() (Thomas Gleixner)
 
  - <linux/cleanup.h>:
     - Add usage and style documentation (Dan Williams)
 
  - rwsems:
     - Move is_rwsem_reader_owned() and rwsem_owner() under CONFIG_DEBUG_RWSEMS (Waiman Long)
 
  - atomic ops, x86:
     - Redeclare x86_32 arch_atomic64_{add,sub}() as void (Uros Bizjak)
     - Introduce the read64_nonatomic macro to x86_32 with cx8 (Uros Bizjak)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "lockdep:
    - Fix potential deadlock between lockdep and RCU (Zhiguo Niu)
    - Use str_plural() to address Coccinelle warning (Thorsten Blum)
    - Add debuggability enhancement (Luis Claudio R. Goncalves)

  static keys & calls:
    - Fix static_key_slow_dec() yet again (Peter Zijlstra)
    - Handle module init failure correctly in static_call_del_module()
      (Thomas Gleixner)
    - Replace pointless WARN_ON() in static_call_module_notify() (Thomas
      Gleixner)

  <linux/cleanup.h>:
    - Add usage and style documentation (Dan Williams)

  rwsems:
    - Move is_rwsem_reader_owned() and rwsem_owner() under
      CONFIG_DEBUG_RWSEMS (Waiman Long)

  atomic ops, x86:
    - Redeclare x86_32 arch_atomic64_{add,sub}() as void (Uros Bizjak)
    - Introduce the read64_nonatomic macro to x86_32 with cx8 (Uros
      Bizjak)"

Signed-off-by: Ingo Molnar <mingo@kernel.org>

* tag 'locking-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwsem: Move is_rwsem_reader_owned() and rwsem_owner() under CONFIG_DEBUG_RWSEMS
  jump_label: Fix static_key_slow_dec() yet again
  static_call: Replace pointless WARN_ON() in static_call_module_notify()
  static_call: Handle module init failure correctly in static_call_del_module()
  locking/lockdep: Simplify character output in seq_line()
  lockdep: fix deadlock issue between lockdep and rcu
  lockdep: Use str_plural() to fix Coccinelle warning
  cleanup: Add usage and style documentation
  lockdep: suggest the fix for "lockdep bfs error:-1" on print_bfs_bug
  locking/atomic/x86: Redeclare x86_32 arch_atomic64_{add,sub}() as void
  locking/atomic/x86: Introduce the read64_nonatomic macro to x86_32 with cx8
2024-09-29 08:51:30 -07:00
Ingo Molnar
ae39e0bd15 Merge branch 'locking/core' into locking/urgent, to pick up pending commits
Merge all pending locking commits into a single branch.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2024-09-29 08:57:18 +02:00
Linus Torvalds
3efc57369a x86:
* KVM currently invalidates the entirety of the page tables, not just
   those for the memslot being touched, when a memslot is moved or deleted.
   The former does not have particularly noticeable overhead, but Intel's
   TDX will require the guest to re-accept private pages if they are
   dropped from the secure EPT, which is a non starter.  Actually,
   the only reason why this is not already being done is a bug which
   was never fully investigated and caused VM instability with assigned
   GeForce GPUs, so allow userspace to opt into the new behavior.
 
 * Advertise AVX10.1 to userspace (effectively prep work for the "real" AVX10
   functionality that is on the horizon).
 
 * Rework common MSR handling code to suppress errors on userspace accesses to
   unsupported-but-advertised MSRs.  This will allow removing (almost?) all of
   KVM's exemptions for userspace access to MSRs that shouldn't exist based on
   the vCPU model (the actual cleanup is non-trivial future work).
 
 * Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC) splits the
   64-bit value into the legacy ICR and ICR2 storage, whereas Intel (APICv)
   stores the entire 64-bit value at the ICR offset.
 
 * Fix a bug where KVM would fail to exit to userspace if one was triggered by
   a fastpath exit handler.
 
 * Add fastpath handling of HLT VM-Exit to expedite re-entering the guest when
   there's already a pending wake event at the time of the exit.
 
 * Fix a WARN caused by RSM entering a nested guest from SMM with invalid guest
   state, by forcing the vCPU out of guest mode prior to signalling SHUTDOWN
   (the SHUTDOWN hits the VM altogether, not the nested guest)
 
 * Overhaul the "unprotect and retry" logic to more precisely identify cases
   where retrying is actually helpful, and to harden all retry paths against
   putting the guest into an infinite retry loop.
 
 * Add support for yielding, e.g. to honor NEED_RESCHED, when zapping rmaps in
   the shadow MMU.
 
 * Refactor pieces of the shadow MMU related to aging SPTEs in prepartion for
   adding multi generation LRU support in KVM.
 
 * Don't stuff the RSB after VM-Exit when RETPOLINE=y and AutoIBRS is enabled,
   i.e. when the CPU has already flushed the RSB.
 
 * Trace the per-CPU host save area as a VMCB pointer to improve readability
   and cleanup the retrieval of the SEV-ES host save area.
 
 * Remove unnecessary accounting of temporary nested VMCB related allocations.
 
 * Set FINAL/PAGE in the page fault error code for EPT violations if and only
   if the GVA is valid.  If the GVA is NOT valid, there is no guest-side page
   table walk and so stuffing paging related metadata is nonsensical.
 
 * Fix a bug where KVM would incorrectly synthesize a nested VM-Exit instead of
   emulating posted interrupt delivery to L2.
 
 * Add a lockdep assertion to detect unsafe accesses of vmcs12 structures.
 
 * Harden eVMCS loading against an impossible NULL pointer deref (really truly
   should be impossible).
 
 * Minor SGX fix and a cleanup.
 
 * Misc cleanups
 
 Generic:
 
 * Register KVM's cpuhp and syscore callbacks when enabling virtualization in
   hardware, as the sole purpose of said callbacks is to disable and re-enable
   virtualization as needed.
 
 * Enable virtualization when KVM is loaded, not right before the first VM
   is created.  Together with the previous change, this simplifies a
   lot the logic of the callbacks, because their very existence implies
   virtualization is enabled.
 
 * Fix a bug that results in KVM prematurely exiting to userspace for coalesced
   MMIO/PIO in many cases, clean up the related code, and add a testcase.
 
 * Fix a bug in kvm_clear_guest() where it would trigger a buffer overflow _if_
   the gpa+len crosses a page boundary, which thankfully is guaranteed to not
   happen in the current code base.  Add WARNs in more helpers that read/write
   guest memory to detect similar bugs.
 
 Selftests:
 
 * Fix a goof that caused some Hyper-V tests to be skipped when run on bare
   metal, i.e. NOT in a VM.
 
 * Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES guest.
 
 * Explicitly include one-off assets in .gitignore.  Past Sean was completely
   wrong about not being able to detect missing .gitignore entries.
 
 * Verify userspace single-stepping works when KVM happens to handle a VM-Exit
   in its fastpath.
 
 * Misc cleanups
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull x86 kvm updates from Paolo Bonzini:
 "x86:

   - KVM currently invalidates the entirety of the page tables, not just
     those for the memslot being touched, when a memslot is moved or
     deleted.

     This does not traditionally have particularly noticeable overhead,
     but Intel's TDX will require the guest to re-accept private pages
     if they are dropped from the secure EPT, which is a non starter.

     Actually, the only reason why this is not already being done is a
     bug which was never fully investigated and caused VM instability
     with assigned GeForce GPUs, so allow userspace to opt into the new
     behavior.

   - Advertise AVX10.1 to userspace (effectively prep work for the
     "real" AVX10 functionality that is on the horizon)

   - Rework common MSR handling code to suppress errors on userspace
     accesses to unsupported-but-advertised MSRs

     This will allow removing (almost?) all of KVM's exemptions for
     userspace access to MSRs that shouldn't exist based on the vCPU
     model (the actual cleanup is non-trivial future work)

   - Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC)
     splits the 64-bit value into the legacy ICR and ICR2 storage,
     whereas Intel (APICv) stores the entire 64-bit value at the ICR
     offset

   - Fix a bug where KVM would fail to exit to userspace if one was
     triggered by a fastpath exit handler

   - Add fastpath handling of HLT VM-Exit to expedite re-entering the
     guest when there's already a pending wake event at the time of the
     exit

   - Fix a WARN caused by RSM entering a nested guest from SMM with
     invalid guest state, by forcing the vCPU out of guest mode prior to
     signalling SHUTDOWN (the SHUTDOWN hits the VM altogether, not the
     nested guest)

   - Overhaul the "unprotect and retry" logic to more precisely identify
     cases where retrying is actually helpful, and to harden all retry
     paths against putting the guest into an infinite retry loop

   - Add support for yielding, e.g. to honor NEED_RESCHED, when zapping
     rmaps in the shadow MMU

   - Refactor pieces of the shadow MMU related to aging SPTEs in
     prepartion for adding multi generation LRU support in KVM

   - Don't stuff the RSB after VM-Exit when RETPOLINE=y and AutoIBRS is
     enabled, i.e. when the CPU has already flushed the RSB

   - Trace the per-CPU host save area as a VMCB pointer to improve
     readability and cleanup the retrieval of the SEV-ES host save area

   - Remove unnecessary accounting of temporary nested VMCB related
     allocations

   - Set FINAL/PAGE in the page fault error code for EPT violations if
     and only if the GVA is valid. If the GVA is NOT valid, there is no
     guest-side page table walk and so stuffing paging related metadata
     is nonsensical

   - Fix a bug where KVM would incorrectly synthesize a nested VM-Exit
     instead of emulating posted interrupt delivery to L2

   - Add a lockdep assertion to detect unsafe accesses of vmcs12
     structures

   - Harden eVMCS loading against an impossible NULL pointer deref
     (really truly should be impossible)

   - Minor SGX fix and a cleanup

   - Misc cleanups

  Generic:

   - Register KVM's cpuhp and syscore callbacks when enabling
     virtualization in hardware, as the sole purpose of said callbacks
     is to disable and re-enable virtualization as needed

   - Enable virtualization when KVM is loaded, not right before the
     first VM is created

     Together with the previous change, this simplifies a lot the logic
     of the callbacks, because their very existence implies
     virtualization is enabled

   - Fix a bug that results in KVM prematurely exiting to userspace for
     coalesced MMIO/PIO in many cases, clean up the related code, and
     add a testcase

   - Fix a bug in kvm_clear_guest() where it would trigger a buffer
     overflow _if_ the gpa+len crosses a page boundary, which thankfully
     is guaranteed to not happen in the current code base. Add WARNs in
     more helpers that read/write guest memory to detect similar bugs

  Selftests:

   - Fix a goof that caused some Hyper-V tests to be skipped when run on
     bare metal, i.e. NOT in a VM

   - Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES
     guest

   - Explicitly include one-off assets in .gitignore. Past Sean was
     completely wrong about not being able to detect missing .gitignore
     entries

   - Verify userspace single-stepping works when KVM happens to handle a
     VM-Exit in its fastpath

   - Misc cleanups"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits)
  Documentation: KVM: fix warning in "make htmldocs"
  s390: Enable KVM_S390_UCONTROL config in debug_defconfig
  selftests: kvm: s390: Add VM run test case
  KVM: SVM: let alternatives handle the cases when RSB filling is required
  KVM: VMX: Set PFERR_GUEST_{FINAL,PAGE}_MASK if and only if the GVA is valid
  KVM: x86/mmu: Use KVM_PAGES_PER_HPAGE() instead of an open coded equivalent
  KVM: x86/mmu: Add KVM_RMAP_MANY to replace open coded '1' and '1ul' literals
  KVM: x86/mmu: Fold mmu_spte_age() into kvm_rmap_age_gfn_range()
  KVM: x86/mmu: Morph kvm_handle_gfn_range() into an aging specific helper
  KVM: x86/mmu: Honor NEED_RESCHED when zapping rmaps and blocking is allowed
  KVM: x86/mmu: Add a helper to walk and zap rmaps for a memslot
  KVM: x86/mmu: Plumb a @can_yield parameter into __walk_slot_rmaps()
  KVM: x86/mmu: Move walk_slot_rmaps() up near for_each_slot_rmap_range()
  KVM: x86/mmu: WARN on MMIO cache hit when emulating write-protected gfn
  KVM: x86/mmu: Detect if unprotect will do anything based on invalid_list
  KVM: x86/mmu: Subsume kvm_mmu_unprotect_page() into the and_retry() version
  KVM: x86: Rename reexecute_instruction()=>kvm_unprotect_and_retry_on_failure()
  KVM: x86: Update retry protection fields when forcing retry on emulation failure
  KVM: x86: Apply retry protection to "unprotect on failure" path
  KVM: x86: Check EMULTYPE_WRITE_PF_TO_SP before unprotecting gfn
  ...
2024-09-28 09:20:14 -07:00
Linus Torvalds
e08d227840 more s390 updates for 6.12 merge window
- Clean up and improve vdso code: use SYM_* macros for function and
   data annotations, add CFI annotations to fix GDB unwinding, optimize
   the chacha20 implementation
 
 - Add vfio-ap driver feature advertisement for use by libvirt and mdevctl
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Merge tag 's390-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Vasily Gorbik:

 - Clean up and improve vdso code: use SYM_* macros for function and
   data annotations, add CFI annotations to fix GDB unwinding, optimize
   the chacha20 implementation

 - Add vfio-ap driver feature advertisement for use by libvirt and
   mdevctl

* tag 's390-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/vfio-ap: Driver feature advertisement
  s390/vdso: Use one large alternative instead of an alternative branch
  s390/vdso: Use SYM_DATA_START_LOCAL()/SYM_DATA_END() for data objects
  tools: Add additional SYM_*() stubs to linkage.h
  s390/vdso: Use macros for annotation of asm functions
  s390/vdso: Add CFI annotations to __arch_chacha20_blocks_nostack()
  s390/vdso: Fix comment within __arch_chacha20_blocks_nostack()
  s390/vdso: Get rid of permutation constants
2024-09-28 09:11:46 -07:00
Linus Torvalds
12cc5240f4 This pull request contains the following changes for UML:
- Removal of dead code (TT mode leftovers, etc.)
 - Fixes for the network vector driver
 - Fixes for time-travel mode
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Merge tag 'uml-for-linus-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux

Pull UML updates from Richard Weinberger:

 - Removal of dead code (TT mode leftovers, etc)

 - Fixes for the network vector driver

 - Fixes for time-travel mode

* tag 'uml-for-linus-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
  um: fix time-travel syscall scheduling hack
  um: Remove outdated asm/sysrq.h header
  um: Remove the declaration of user_thread function
  um: Remove the call to SUBARCH_EXECVE1 macro
  um: Remove unused mm_fd field from mm_id
  um: Remove unused fields from thread_struct
  um: Remove the redundant newpage check in update_pte_range
  um: Remove unused kpte_clear_flush macro
  um: Remove obsoleted declaration for execute_syscall_skas
  user_mode_linux_howto_v2: add VDE vector support in doc
  vector_user: add VDE support
  um: remove ARCH_NO_PREEMPT_DYNAMIC
  um: vector: Fix NAPI budget handling
  um: vector: Replace locks guarding queue depth with atomics
  um: remove variable stack array in os_rcv_fd_msg()
2024-09-27 12:48:48 -07:00
Linus Torvalds
34e1a5d43c Random number generator fixes for Linux 6.12-rc1.
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Merge tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull more random number generator updates from Jason Donenfeld:

 - Christophe realized that the LoongArch64 instructions could be
   scheduled more similar to how GCC generates code, which Ruoyao
   implemented, for a 5% speedup from basically some rearrangements

 - An update to MAINTAINERS to match the right files

* tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  LoongArch: vDSO: Tune chacha implementation
  MAINTAINERS: make vDSO getrandom matches more generic
2024-09-27 12:32:06 -07:00
Linus Torvalds
3630400697 LoongArch changes for v6.12
1, Fix objtool about do_syscall() and Clang;
 2, Enable generic CPU vulnerabilites support;
 3, Enable ACPI BGRT handling;
 4, Rework CPU feature probe from CPUCFG/IOCSR;
 5, Add ARCH_HAS_SET_MEMORY support;
 6, Add ARCH_HAS_SET_DIRECT_MAP support;
 7, Improve hardware page table walker;
 8, Simplify _percpu_read() and _percpu_write();
 9, Add advanced extended IRQ model documentions;
 10, Some bug fixes and other small changes.
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Merge tag 'loongarch-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Fix objtool about do_syscall() and Clang

 - Enable generic CPU vulnerabilites support

 - Enable ACPI BGRT handling

 - Rework CPU feature probe from CPUCFG/IOCSR

 - Add ARCH_HAS_SET_MEMORY support

 - Add ARCH_HAS_SET_DIRECT_MAP support

 - Improve hardware page table walker

 - Simplify _percpu_read() and _percpu_write()

 - Add advanced extended IRQ model documentions

 - Some bug fixes and other small changes

* tag 'loongarch-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  Docs/LoongArch: Add advanced extended IRQ model description
  LoongArch: Remove posix_types.h include from sigcontext.h
  LoongArch: Fix memleak in pci_acpi_scan_root()
  LoongArch: Simplify _percpu_read() and _percpu_write()
  LoongArch: Improve hardware page table walker
  LoongArch: Add ARCH_HAS_SET_DIRECT_MAP support
  LoongArch: Add ARCH_HAS_SET_MEMORY support
  LoongArch: Rework CPU feature probe from CPUCFG/IOCSR
  LoongArch: Enable ACPI BGRT handling
  LoongArch: Enable generic CPU vulnerabilites support
  LoongArch: Remove STACK_FRAME_NON_STANDARD(do_syscall)
  LoongArch: Set AS_HAS_THIN_ADD_SUB as y if AS_IS_LLVM
  LoongArch: Enable objtool for Clang
  objtool: Handle frame pointer related instructions
2024-09-27 10:14:35 -07:00
Linus Torvalds
ec38498450 sh updates for v6.12
- sh: intc: Replace simple_strtoul() with kstrtoul()
 - sh: Remove unused declarations for make_maskreg_irq() and irq_mask_register
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Merge tag 'sh-for-v6.12-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from John Paul Adrian Glaubitz:
 "The first change by Gaosheng Cui removes unused declarations which
  have been obsoleted since commit 5a4053b232 ("sh: Kill off dead
  boards.") and the second by his colleague Hongbo Li replaces the use
  of the unsafe simple_strtoul() with the safer kstrtoul() function in
  the sh interrupt controller driver code"

* tag 'sh-for-v6.12-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: intc: Replace simple_strtoul() with kstrtoul()
  sh: Remove unused declarations for make_maskreg_irq() and irq_mask_register
2024-09-27 10:10:21 -07:00
Linus Torvalds
653608c67a xen: branch for v6.12-rc1a
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Merge tag 'for-linus-6.12-rc1a-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull more xen updates from Juergen Gross:
 "A second round of Xen related changes and features:

   - a small fix of the xen-pciback driver for a warning issued by
     sparse

   - support PCI passthrough when using a PVH dom0

   - enable loading the kernel in PVH mode at arbitrary addresses,
     avoiding conflicts with the memory map when running as a Xen dom0
     using the host memory layout"

* tag 'for-linus-6.12-rc1a-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/pvh: Add 64bit relocation page tables
  x86/kernel: Move page table macros to header
  x86/pvh: Set phys_base when calling xen_prepare_pvh()
  x86/pvh: Make PVH entrypoint PIC for x86-64
  xen: sync elfnote.h from xen tree
  xen/pciback: fix cast to restricted pci_ers_result_t and pci_power_t
  xen/privcmd: Add new syscall to get gsi from dev
  xen/pvh: Setup gsi for passthrough device
  xen/pci: Add a function to reset device for xen
2024-09-27 09:55:30 -07:00
Al Viro
cb787f4ac0 [tree-wide] finally take no_llseek out
no_llseek had been defined to NULL two years ago, in commit 868941b144
("fs: remove no_llseek")

To quote that commit,

  At -rc1 we'll need do a mechanical removal of no_llseek -

  git grep -l -w no_llseek | grep -v porting.rst | while read i; do
	sed -i '/\<no_llseek\>/d' $i
  done

  would do it.

Unfortunately, that hadn't been done.  Linus, could you do that now, so
that we could finally put that thing to rest? All instances are of the
form
	.llseek = no_llseek,
so it's obviously safe.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-09-27 08:18:43 -07:00
Linus Torvalds
075dbe9f6e soc: convert ep93xx to devicetree
This concludes a long journey towards replacing the old
 board files with devictree description on the Cirrus Logic
 EP93xx platform.
 
 Nikita Shubin has been working on this for a long time,
 for details see the last post on
 https://lore.kernel.org/lkml/20240909-ep93xx-v12-0-e86ab2423d4b@maquefel.me/
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Merge tag 'soc-ep93xx-dt-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC update from Arnd Bergmann:
 "Convert ep93xx to devicetree

  This concludes a long journey towards replacing the old board files
  with devictree description on the Cirrus Logic EP93xx platform.

  Nikita Shubin has been working on this for a long time, for details
  see the last post on

    https://lore.kernel.org/lkml/20240909-ep93xx-v12-0-e86ab2423d4b@maquefel.me/"

* tag 'soc-ep93xx-dt-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  dt-bindings: gpio: ep9301: Add missing "#interrupt-cells" to examples
  MAINTAINERS: Update EP93XX ARM ARCHITECTURE maintainer
  soc: ep93xx: drop reference to removed EP93XX_SOC_COMMON config
  net: cirrus: use u8 for addr to calm down sparse
  dmaengine: cirrus: use snprintf() to calm down gcc 13.3.0
  dmaengine: ep93xx: Fix a NULL vs IS_ERR() check in probe()
  pinctrl: ep93xx: Fix raster pins typo
  spi: ep93xx: update kerneldoc comments for ep93xx_spi
  clk: ep93xx: Fix off by one in ep93xx_div_recalc_rate()
  clk: ep93xx: add module license
  dmaengine: cirrus: remove platform code
  ASoC: cirrus: edb93xx: Delete driver
  ARM: ep93xx: soc: drop defines
  ARM: ep93xx: delete all boardfiles
  ata: pata_ep93xx: remove legacy pinctrl use
  pwm: ep93xx: drop legacy pinctrl
  ARM: ep93xx: DT for the Cirrus ep93xx SoC platforms
  ARM: dts: ep93xx: Add EDB9302 DT
  ARM: dts: ep93xx: add ts7250 board
  ARM: dts: add Cirrus EP93XX SoC .dtsi
  ...
2024-09-26 12:00:25 -07:00
Linus Torvalds
348325d644 asm-generic updates for 6.12
These are only two small patches, one cleanup for arch/alpha
 and a preparation patch cleaning up the handling of runtime
 constants in the linker scripts.
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Merge tag 'asm-generic-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "These are only two small patches, one cleanup for arch/alpha and a
  preparation patch cleaning up the handling of runtime constants in the
  linker scripts"

* tag 'asm-generic-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  runtime constants: move list of constants to vmlinux.lds.h
  alpha: no need to include asm/xchg.h twice
2024-09-26 11:54:40 -07:00
Tony Luck
d1fb034b75 x86/cpu: Add two Intel CPU model numbers
Pantherlake is a mobile CPU. Diamond Rapids next generation Xeon.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20240923173750.16874-1-tony.luck%40intel.com
2024-09-26 10:47:49 -07:00
Linus Torvalds
5e5466433d Char/Misc and other driver changes for 6.12-rc1
Here is the "big" set of char/misc and other driver subsystem changes
 for 6.12-rc1.  Sorry for the delay, conference travel for the past two
 weeks has this and my other pull requests showing up real late
 in the cycle.
 
 Lots of changes in here, primarily dominated by the usual IIO driver
 updates and additions, but there are also small driver subsystem updates
 all over the place.  Included in here are:
   - lots and lots of new IIO drivers and updates to existing ones
   - interconnect subsystem updates and new drivers
   - nvmem subsystem updates and new drivers
   - mhi driver updates
   - power supply subsystem updates
   - kobj_type const work for many different small subsystems
   - comedi driver fix
   - coresight subsystem and driver updates
   - fpga subsystem improvements
   - slimbus fixups
   - binder new feature addition for "frozen" notifications
   - lots and lots of other small driver updates and cleanups
 
 All of these have been in linux-next for a long time with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the "big" set of char/misc and other driver subsystem changes
  for 6.12-rc1.

  Lots of changes in here, primarily dominated by the usual IIO driver
  updates and additions, but there are also small driver subsystem
  updates all over the place. Included in here are:

   - lots and lots of new IIO drivers and updates to existing ones

   - interconnect subsystem updates and new drivers

   - nvmem subsystem updates and new drivers

   - mhi driver updates

   - power supply subsystem updates

   - kobj_type const work for many different small subsystems

   - comedi driver fix

   - coresight subsystem and driver updates

   - fpga subsystem improvements

   - slimbus fixups

   - binder new feature addition for "frozen" notifications

   - lots and lots of other small driver updates and cleanups

  All of these have been in linux-next for a long time with no reported
  problems"

* tag 'char-misc-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (354 commits)
  greybus: gb-beagleplay: Add firmware upload API
  arm64: dts: ti: k3-am625-beagleplay: Add bootloader-backdoor-gpios to cc1352p7
  dt-bindings: net: ti,cc1352p7: Add bootloader-backdoor-gpios
  MAINTAINERS: Update path for U-Boot environment variables YAML
  nvmem: layouts: add U-Boot env layout
  comedi: ni_routing: tools: Check when the file could not be opened
  ocxl: Remove the unused declarations in headr file
  hpet: Fix the wrong format specifier
  uio: Constify struct kobj_type
  cxl: Constify struct kobj_type
  binder: modify the comment for binder_proc_unlock
  iio: adc: axp20x_adc: add support for AXP717 ADC
  dt-bindings: iio: adc: Add AXP717 compatible
  iio: adc: axp20x_adc: Add adc_en1 and adc_en2 to axp_data
  w1: ds2482: Drop explicit initialization of struct i2c_device_id::driver_data to 0
  tools: iio: rm .*.cmd when make clean
  iio: adc: standardize on formatting for id match tables
  iio: proximity: aw96103: Add support for aw96103/aw96105 proximity sensor
  bus: mhi: host: pci_generic: Enable EDL trigger for Foxconn modems
  bus: mhi: host: pci_generic: Update EDL firmware path for Foxconn modems
  ...
2024-09-26 10:13:08 -07:00
Linus Torvalds
356a031945 TTY/Serial driver update for 6.12-rc1
Here is the "big" set of tty/serial driver updates for 6.12-rc1.
 
 Nothing major in here, just nice forward progress in the slow cleanup of
 the serial apis, and lots of other driver updates and fixes.
 
 Included in here are:
   - serial api updates from Jiri to make things more uniform and sane
   - 8250_platform driver cleanups
   - samsung serial driver fixes and updates
   - qcom-geni serial driver fixes from Johan for the bizarre UART engine
     that that chip seems to have.  Hopefully it's in a better state now,
     but hardware designers still seem to come up with more ways to make
     broken UARTS 40+ years after this all should have finished.
   - sc16is7xx driver updates
   - omap 8250 driver updates
   - 8250_bcm2835aux driver updates
   - a few new serial driver bindings added
   - other serial minor driver updates
 
 All of these have been in linux-next for a long time with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial driver updates from Greg KH:
 "Here is the "big" set of tty/serial driver updates for 6.12-rc1.

  Nothing major in here, just nice forward progress in the slow cleanup
  of the serial apis, and lots of other driver updates and fixes.

  Included in here are:

   - serial api updates from Jiri to make things more uniform and sane

   - 8250_platform driver cleanups

   - samsung serial driver fixes and updates

   - qcom-geni serial driver fixes from Johan for the bizarre UART
     engine that that chip seems to have. Hopefully it's in a better
     state now, but hardware designers still seem to come up with more
     ways to make broken UARTS 40+ years after this all should have
     finished.

   - sc16is7xx driver updates

   - omap 8250 driver updates

   - 8250_bcm2835aux driver updates

   - a few new serial driver bindings added

   - other serial minor driver updates

  All of these have been in linux-next for a long time with no reported
  problems"

* tag 'tty-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (65 commits)
  tty: serial: samsung: Fix serial rx on Apple A7-A9
  tty: serial: samsung: Fix A7-A11 serial earlycon SError
  tty: serial: samsung: Use bit manipulation macros for APPLE_S5L_*
  tty: rp2: Fix reset with non forgiving PCIe host bridges
  serial: 8250_aspeed_vuart: Enable module autoloading
  serial: qcom-geni: fix polled console corruption
  serial: qcom-geni: disable interrupts during console writes
  serial: qcom-geni: fix console corruption
  serial: qcom-geni: introduce qcom_geni_serial_poll_bitfield()
  serial: qcom-geni: fix arg types for qcom_geni_serial_poll_bit()
  soc: qcom: geni-se: add GP_LENGTH/IRQ_EN_SET/IRQ_EN_CLEAR registers
  serial: qcom-geni: fix false console tx restart
  serial: qcom-geni: fix fifo polling timeout
  tty: hvc: convert comma to semicolon
  mxser: convert comma to semicolon
  serial: 8250_bcm2835aux: Fix clock imbalance in PM resume
  serial: sc16is7xx: convert bitmask definitions to use BIT() macro
  serial: sc16is7xx: fix copy-paste errors in EFR_SWFLOWx_BIT constants
  serial: sc16is7xx: remove SC16IS7XX_MSR_DELTA_MASK
  serial: xilinx_uartps: Make cdns_rs485_supported static
  ...
2024-09-26 09:59:50 -07:00
Alexey Gladkov (Intel)
d4fc4d0147 x86/tdx: Fix "in-kernel MMIO" check
TDX only supports kernel-initiated MMIO operations. The handle_mmio()
function checks if the #VE exception occurred in the kernel and rejects
the operation if it did not.

However, userspace can deceive the kernel into performing MMIO on its
behalf. For example, if userspace can point a syscall to an MMIO address,
syscall does get_user() or put_user() on it, triggering MMIO #VE. The
kernel will treat the #VE as in-kernel MMIO.

Ensure that the target MMIO address is within the kernel before decoding
instruction.

Fixes: 31d58c4e55 ("x86/tdx: Handle in-kernel MMIO")
Signed-off-by: Alexey Gladkov (Intel) <legion@kernel.org>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/565a804b80387970460a4ebc67c88d1380f61ad1.1726237595.git.legion%40kernel.org
2024-09-26 09:45:04 -07:00
Gaosheng Cui
977fae6d61 sh: Remove unused declarations for make_maskreg_irq() and irq_mask_register
make_maskreg_irq() and irq_mask_register have been removed since
commit 5a4053b232 ("sh: Kill off dead boards."), so remove the
unused declarations.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2024-09-26 17:24:51 +02:00
Linus Torvalds
aa486552a1 memblock: updates for 6.12-rc1
* new memblock_estimated_nr_free_pages() helper to replace totalram_pages()
   which is less accurate when CONFIG_DEFERRED_STRUCT_PAGE_INIT is set
 * fixes for memblock tests
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Merge tag 'memblock-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock updates from Mike Rapoport:

 - new memblock_estimated_nr_free_pages() helper to replace
   totalram_pages() which is less accurate when
   CONFIG_DEFERRED_STRUCT_PAGE_INIT is set

 - fixes for memblock tests

* tag 'memblock-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  s390/mm: get estimated free pages by memblock api
  kernel/fork.c: get estimated free pages by memblock api
  mm/memblock: introduce a new helper memblock_estimated_nr_free_pages()
  memblock test: fix implicit declaration of function 'strscpy'
  memblock test: fix implicit declaration of function 'isspace'
  memblock test: fix implicit declaration of function 'memparse'
  memblock test: add the definition of __setup()
  memblock test: fix implicit declaration of function 'virt_to_phys'
  tools/testing: abstract two init.h into common include directory
  memblock tests: include export.h in linkage.h as kernel dose
  memblock tests: include memory_hotplug.h in mmzone.h as kernel dose
2024-09-25 11:35:19 -07:00
Linus Torvalds
eb5b0f9812 This includes the following changes related to sparc for v6.12:
- Remove an unused variable for sparc32
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Merge tag 'sparc-for-6.12-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc

Pull sparc32 update from Andreas Larsson:

 - Remove an unused variable for sparc32

* tag 'sparc-for-6.12-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc:
  arch/sparc: remove unused varible paddrbase in function leon_swprobe()
2024-09-25 11:21:06 -07:00
Linus Torvalds
4ffc458083 powerpc fixes for 6.12 #2
- Fix build error in vdso32 when building 64-bit with COMPAT=y and -Os.
 
  - Fix build error in pseries EEH when CONFIG_DEBUG_FS is not set.
 
 Thanks to: Christophe Leroy, Narayana Murty N, Christian Zigotzky, Ritesh
 Harjani.
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Merge tag 'powerpc-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix build error in vdso32 when building 64-bit with COMPAT=y and -Os

 - Fix build error in pseries EEH when CONFIG_DEBUG_FS is not set

Thanks to Christophe Leroy, Narayana Murty N, Christian Zigotzky, and
Ritesh Harjani.

* tag 'powerpc-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries/eeh: move pseries_eeh_err_inject() outside CONFIG_DEBUG_FS block
  powerpc/vdso32: Fix use of crtsavres for PPC64
2024-09-25 11:17:25 -07:00
Linus Torvalds
5701725692 Rust changes for v6.12
Toolchain and infrastructure:
 
  - Support 'MITIGATION_{RETHUNK,RETPOLINE,SLS}' (which cleans up objtool
    warnings), teach objtool about 'noreturn' Rust symbols and mimic
    '___ADDRESSABLE()' for 'module_{init,exit}'. With that, we should be
    objtool-warning-free, so enable it to run for all Rust object files.
 
  - KASAN (no 'SW_TAGS'), KCFI and shadow call sanitizer support.
 
  - Support 'RUSTC_VERSION', including re-config and re-build on change.
 
  - Split helpers file into several files in a folder, to avoid conflicts
    in it. Eventually those files will be moved to the right places with
    the new build system. In addition, remove the need to manually export
    the symbols defined there, reusing existing machinery for that.
 
  - Relax restriction on configurations with Rust + GCC plugins to just
    the RANDSTRUCT plugin.
 
 'kernel' crate:
 
  - New 'list' module: doubly-linked linked list for use with reference
    counted values, which is heavily used by the upcoming Rust Binder.
    This includes 'ListArc' (a wrapper around 'Arc' that is guaranteed
    unique for the given ID), 'AtomicTracker' (tracks whether a 'ListArc'
    exists using an atomic), 'ListLinks' (the prev/next pointers for an
    item in a linked list), 'List' (the linked list itself), 'Iter' (an
    iterator over a 'List'), 'Cursor' (a cursor into a 'List' that allows
    to remove elements), 'ListArcField' (a field exclusively owned by a
    'ListArc'), as well as support for heterogeneous lists.
 
  - New 'rbtree' module: red-black tree abstractions used by the upcoming
    Rust Binder. This includes 'RBTree' (the red-black tree itself),
    'RBTreeNode' (a node), 'RBTreeNodeReservation' (a memory reservation
    for a node), 'Iter' and 'IterMut' (immutable and mutable iterators),
    'Cursor' (bidirectional cursor that allows to remove elements), as
    well as an entry API similar to the Rust standard library one.
 
  - 'init' module: add 'write_[pin_]init' methods and the 'InPlaceWrite'
    trait. Add the 'assert_pinned!' macro.
 
  - 'sync' module: implement the 'InPlaceInit' trait for 'Arc' by
    introducing an associated type in the trait.
 
  - 'alloc' module: add 'drop_contents' method to 'BoxExt'.
 
  - 'types' module: implement the 'ForeignOwnable' trait for
    'Pin<Box<T>>' and improve the trait's documentation. In addition,
    add the 'into_raw' method to the 'ARef' type.
 
  - 'error' module: in preparation for the upcoming Rust support for
    32-bit architectures, like arm, locally allow Clippy lint for those.
 
 Documentation:
 
  - https://rust.docs.kernel.org has been announced, so link to it.
 
  - Enable rustdoc's "jump to definition" feature, making its output a
    bit closer to the experience in a cross-referencer.
 
  - Debian Testing now also provides recent Rust releases (outside of
    the freeze period), so add it to the list.
 
 MAINTAINERS:
 
  - Trevor is joining as reviewer of the "RUST" entry.
 
 And a few other small bits.
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Merge tag 'rust-6.12' of https://github.com/Rust-for-Linux/linux

Pull Rust updates from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Support 'MITIGATION_{RETHUNK,RETPOLINE,SLS}' (which cleans up
     objtool warnings), teach objtool about 'noreturn' Rust symbols and
     mimic '___ADDRESSABLE()' for 'module_{init,exit}'. With that, we
     should be objtool-warning-free, so enable it to run for all Rust
     object files.

   - KASAN (no 'SW_TAGS'), KCFI and shadow call sanitizer support.

   - Support 'RUSTC_VERSION', including re-config and re-build on
     change.

   - Split helpers file into several files in a folder, to avoid
     conflicts in it. Eventually those files will be moved to the right
     places with the new build system. In addition, remove the need to
     manually export the symbols defined there, reusing existing
     machinery for that.

   - Relax restriction on configurations with Rust + GCC plugins to just
     the RANDSTRUCT plugin.

  'kernel' crate:

   - New 'list' module: doubly-linked linked list for use with reference
     counted values, which is heavily used by the upcoming Rust Binder.

     This includes 'ListArc' (a wrapper around 'Arc' that is guaranteed
     unique for the given ID), 'AtomicTracker' (tracks whether a
     'ListArc' exists using an atomic), 'ListLinks' (the prev/next
     pointers for an item in a linked list), 'List' (the linked list
     itself), 'Iter' (an iterator over a 'List'), 'Cursor' (a cursor
     into a 'List' that allows to remove elements), 'ListArcField' (a
     field exclusively owned by a 'ListArc'), as well as support for
     heterogeneous lists.

   - New 'rbtree' module: red-black tree abstractions used by the
     upcoming Rust Binder.

     This includes 'RBTree' (the red-black tree itself), 'RBTreeNode' (a
     node), 'RBTreeNodeReservation' (a memory reservation for a node),
     'Iter' and 'IterMut' (immutable and mutable iterators), 'Cursor'
     (bidirectional cursor that allows to remove elements), as well as
     an entry API similar to the Rust standard library one.

   - 'init' module: add 'write_[pin_]init' methods and the
     'InPlaceWrite' trait. Add the 'assert_pinned!' macro.

   - 'sync' module: implement the 'InPlaceInit' trait for 'Arc' by
     introducing an associated type in the trait.

   - 'alloc' module: add 'drop_contents' method to 'BoxExt'.

   - 'types' module: implement the 'ForeignOwnable' trait for
     'Pin<Box<T>>' and improve the trait's documentation. In addition,
     add the 'into_raw' method to the 'ARef' type.

   - 'error' module: in preparation for the upcoming Rust support for
     32-bit architectures, like arm, locally allow Clippy lint for
     those.

  Documentation:

   - https://rust.docs.kernel.org has been announced, so link to it.

   - Enable rustdoc's "jump to definition" feature, making its output a
     bit closer to the experience in a cross-referencer.

   - Debian Testing now also provides recent Rust releases (outside of
     the freeze period), so add it to the list.

  MAINTAINERS:

   - Trevor is joining as reviewer of the "RUST" entry.

  And a few other small bits"

* tag 'rust-6.12' of https://github.com/Rust-for-Linux/linux: (54 commits)
  kasan: rust: Add KASAN smoke test via UAF
  kbuild: rust: Enable KASAN support
  rust: kasan: Rust does not support KHWASAN
  kbuild: rust: Define probing macros for rustc
  kasan: simplify and clarify Makefile
  rust: cfi: add support for CFI_CLANG with Rust
  cfi: add CONFIG_CFI_ICALL_NORMALIZE_INTEGERS
  rust: support for shadow call stack sanitizer
  docs: rust: include other expressions in conditional compilation section
  kbuild: rust: replace proc macros dependency on `core.o` with the version text
  kbuild: rust: rebuild if the version text changes
  kbuild: rust: re-run Kconfig if the version text changes
  kbuild: rust: add `CONFIG_RUSTC_VERSION`
  rust: avoid `box_uninit_write` feature
  MAINTAINERS: add Trevor Gross as Rust reviewer
  rust: rbtree: add `RBTree::entry`
  rust: rbtree: add cursor
  rust: rbtree: add mutable iterator
  rust: rbtree: add iterator
  rust: rbtree: add red-black tree implementation backed by the C version
  ...
2024-09-25 10:25:40 -07:00
Jason Andryuk
47ffe0578a x86/pvh: Add 64bit relocation page tables
The PVH entry point is 32bit.  For a 64bit kernel, the entry point must
switch to 64bit mode, which requires a set of page tables.  In the past,
PVH used init_top_pgt.

This works fine when the kernel is loaded at LOAD_PHYSICAL_ADDR, as the
page tables are prebuilt for this address.  If the kernel is loaded at a
different address, they need to be adjusted.

__startup_64() adjusts the prebuilt page tables for the physical load
address, but it is 64bit code.  The 32bit PVH entry code can't call it
to adjust the page tables, so it can't readily be re-used.

64bit PVH entry needs page tables set up for identity map, the kernel
high map and the direct map.  pvh_start_xen() enters identity mapped.
Inside xen_prepare_pvh(), it jumps through a pv_ops function pointer
into the highmap.  The direct map is used for __va() on the initramfs
and other guest physical addresses.

Add a dedicated set of prebuild page tables for PVH entry.  They are
adjusted in assembly before loading.

Add XEN_ELFNOTE_PHYS32_RELOC to indicate support for relocation
along with the kernel's loading constraints.  The maximum load address,
KERNEL_IMAGE_SIZE - 1, is determined by a single pvh_level2_ident_pgt
page.  It could be larger with more pages.

Signed-off-by: Jason Andryuk <jason.andryuk@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Message-ID: <20240823193630.2583107-6-jason.andryuk@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-09-25 16:06:07 +02:00
Jason Andryuk
e3e8cd90f8 x86/kernel: Move page table macros to header
The PVH entry point will need an additional set of prebuild page tables.
Move the macros and defines to pgtable_64.h, so they can be re-used.

Signed-off-by: Jason Andryuk <jason.andryuk@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Message-ID: <20240823193630.2583107-5-jason.andryuk@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-09-25 16:06:03 +02:00
Jason Andryuk
b464b461d2 x86/pvh: Set phys_base when calling xen_prepare_pvh()
phys_base needs to be set for __pa() to work in xen_pvh_init() when
finding the hypercall page.  Set it before calling into
xen_prepare_pvh(), which calls xen_pvh_init().  Clear it afterward to
avoid __startup_64() adding to it and creating an incorrect value.

Signed-off-by: Jason Andryuk <jason.andryuk@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Message-ID: <20240823193630.2583107-4-jason.andryuk@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-09-25 14:15:11 +02:00
Jason Andryuk
1db29f99ed x86/pvh: Make PVH entrypoint PIC for x86-64
The PVH entrypoint is 32bit non-PIC code running the uncompressed
vmlinux at its load address CONFIG_PHYSICAL_START - default 0x1000000
(16MB).  The kernel is loaded at that physical address inside the VM by
the VMM software (Xen/QEMU).

When running a Xen PVH Dom0, the host reserved addresses are mapped 1-1
into the PVH container.  There exist system firmwares (Coreboot/EDK2)
with reserved memory at 16MB.  This creates a conflict where the PVH
kernel cannot be loaded at that address.

Modify the PVH entrypoint to be position-indepedent to allow flexibility
in load address.  Only the 64bit entry path is converted.  A 32bit
kernel is not PIC, so calling into other parts of the kernel, like
xen_prepare_pvh() and mk_pgtable_32(), don't work properly when
relocated.

This makes the code PIC, but the page tables need to be updated as well
to handle running from the kernel high map.

The UNWIND_HINT_END_OF_STACK is to silence:
vmlinux.o: warning: objtool: pvh_start_xen+0x7f: unreachable instruction
after the lret into 64bit code.

Signed-off-by: Jason Andryuk <jason.andryuk@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Message-ID: <20240823193630.2583107-3-jason.andryuk@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-09-25 14:15:08 +02:00
Jiqian Chen
b166b8ab41 xen/pvh: Setup gsi for passthrough device
In PVH dom0, the gsis don't get registered, but the gsi of
a passthrough device must be configured for it to be able to be
mapped into a domU.

When assigning a device to passthrough, proactively setup the gsi
of the device during that process.

Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Message-ID: <20240924061437.2636766-3-Jiqian.Chen@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-09-25 09:54:52 +02:00
Linus Torvalds
68e5c7d4ce Kbuild updates for v6.12
- Support cross-compiling linux-headers Debian package and kernel-devel
    RPM package
 
  - Add support for the linux-debug Pacman package
 
  - Improve module rebuilding speed by factoring out the common code to
    scripts/module-common.c
 
  - Separate device tree build rules into scripts/Makefile.dtbs
 
  - Add a new script to generate modules.builtin.ranges, which is useful
    for tracing tools to find symbols in built-in modules
 
  - Refactor Kconfig and misc tools
 
  - Update Kbuild and Kconfig documentation
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Merge tag 'kbuild-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Support cross-compiling linux-headers Debian package and kernel-devel
   RPM package

 - Add support for the linux-debug Pacman package

 - Improve module rebuilding speed by factoring out the common code to
   scripts/module-common.c

 - Separate device tree build rules into scripts/Makefile.dtbs

 - Add a new script to generate modules.builtin.ranges, which is useful
   for tracing tools to find symbols in built-in modules

 - Refactor Kconfig and misc tools

 - Update Kbuild and Kconfig documentation

* tag 'kbuild-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
  kbuild: doc: replace "gcc" in external module description
  kbuild: doc: describe the -C option precisely for external module builds
  kbuild: doc: remove the description about shipped files
  kbuild: doc: drop section numbering, use references in modules.rst
  kbuild: doc: throw out the local table of contents in modules.rst
  kbuild: doc: remove outdated description of the limitation on -I usage
  kbuild: doc: remove description about grepping CONFIG options
  kbuild: doc: update the description about Kbuild/Makefile split
  kbuild: remove unnecessary export of RUST_LIB_SRC
  kbuild: remove append operation on cmd_ld_ko_o
  kconfig: cache expression values
  kconfig: use hash table to reuse expressions
  kconfig: refactor expr_eliminate_dups()
  kconfig: add comments to expression transformations
  kconfig: change some expr_*() functions to bool
  scripts: move hash function from scripts/kconfig/ to scripts/include/
  kallsyms: change overflow variable to bool type
  kallsyms: squash output_address()
  kbuild: add install target for modules.builtin.ranges
  scripts: add verifier script for builtin module range data
  ...
2024-09-24 13:02:06 -07:00
Linus Torvalds
9ae2940cbc Input updates for v6.12-rc0
- support for PixArt PS/2 touchpad
 
 - updates to tsc2004/5, usbtouchscreen, and zforce_ts drivers
 
 - support for GPIO-only mode for ADP55888 controller
 
 - support for touch keys in Zinitix driver
 
 - support for querying density of Synaptics sensors
 
 - sysfs interface for Goodex "Berlin" devices to read and write touch IC
   registers
 
 - more quirks to i8042 to handle various Tuxedo laptops
 
 - a number of drivers have been converted to using "guard" notation
   when acquiring various locks, as well as using other cleanup functions
   to simplify releasing of resources (with more drivers to follow)
 
 - evdev will limit amount of data that can be written into an evdev
   instance at a given time to 4096 bytes (170 input events) to avoid
   holding evdev->mutex for too long and starving other users
 
 - Spitz has been converted to use software nodes/properties to describe
   its matrix keypad and GPIO-connected LEDs
 
 - msc5000_ts, msc_touchkey and keypad-nomadik-ske drivers have been
   removed since noone in mainline have been using them
 
 - other assorted cleanups and fixes.
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Merge tag 'input-for-v6.12-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:

 - support for PixArt PS/2 touchpad

 - updates to tsc2004/5, usbtouchscreen, and zforce_ts drivers

 - support for GPIO-only mode for ADP55888 controller

 - support for touch keys in Zinitix driver

 - support for querying density of Synaptics sensors

 - sysfs interface for Goodex "Berlin" devices to read and write touch
   IC registers

 - more quirks to i8042 to handle various Tuxedo laptops

 - a number of drivers have been converted to using "guard" notation
   when acquiring various locks, as well as using other cleanup
   functions to simplify releasing of resources (with more drivers to
   follow)

 - evdev will limit amount of data that can be written into an evdev
   instance at a given time to 4096 bytes (170 input events) to avoid
   holding evdev->mutex for too long and starving other users

 - Spitz has been converted to use software nodes/properties to describe
   its matrix keypad and GPIO-connected LEDs

 - msc5000_ts, msc_touchkey and keypad-nomadik-ske drivers have been
   removed since noone in mainline have been using them

 - other assorted cleanups and fixes

* tag 'input-for-v6.12-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (98 commits)
  ARM: spitz: fix compile error when matrix keypad driver is enabled
  Input: hynitron_cstxxx - drop explicit initialization of struct i2c_device_id::driver_data to 0
  Input: adp5588-keys - fix check on return code
  Input: Convert comma to semicolon
  Input: i8042 - add TUXEDO Stellaris 15 Slim Gen6 AMD to i8042 quirk table
  Input: i8042 - add another board name for TUXEDO Stellaris Gen5 AMD line
  Input: tegra-kbc - use of_property_read_variable_u32_array() and of_property_present()
  Input: ps2-gpio - use IRQF_NO_AUTOEN flag in request_irq()
  Input: ims-pcu - fix calling interruptible mutex
  Input: zforce_ts - switch to using asynchronous probing
  Input: zforce_ts - remove assert/deassert wrappers
  Input: zforce_ts - do not hardcode interrupt level
  Input: zforce_ts - switch to using devm_regulator_get_enable()
  Input: zforce_ts - stop treating VDD regulator as optional
  Input: zforce_ts - make zforce_idtable constant
  Input: zforce_ts - use dev_err_probe() where appropriate
  Input: zforce_ts - do not ignore errors when acquiring regulator
  Input: zforce_ts - make parsing of contacts less confusing
  Input: zforce_ts - switch to using get_unaligned_le16
  Input: zforce_ts - use guard notation when acquiring mutexes
  ...
2024-09-24 12:42:35 -07:00
Linus Torvalds
97d8894b6f RISC-V Patches for the 6.12 Merge Window, Part 1
* Support for using Zkr to seed KASLR.
 * Support for IPI-triggered CPU backtracing.
 * Support for generic CPU vulnerabilities reporting to userspace.
 * A few cleanups for missing licenses.
 * The size limit on the XIP kernel has been removed.
 * Support for tracing userspace stacks.
 * Support for the Svvptc extension.
 * Various cleanups and fixes throughout the tree.
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Merge tag 'riscv-for-linus-6.12-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support using Zkr to seed KASLR

 - Support IPI-triggered CPU backtracing

 - Support for generic CPU vulnerabilities reporting to userspace

 - A few cleanups for missing licenses

 - The size limit on the XIP kernel has been removed

 - Support for tracing userspace stacks

 - Support for the Svvptc extension

 - Various cleanups and fixes throughout the tree

* tag 'riscv-for-linus-6.12-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (47 commits)
  crash: Fix riscv64 crash memory reserve dead loop
  perf/riscv-sbi: Add platform specific firmware event handling
  tools: Optimize ring buffer for riscv
  tools: Add riscv barrier implementation
  RISC-V: Don't have MAX_PHYSMEM_BITS exceed phys_addr_t
  ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
  riscv: Enable bitops instrumentation
  riscv: Omit optimized string routines when using KASAN
  ACPI: RISCV: Make acpi_numa_get_nid() to be static
  riscv: Randomize lower bits of stack address
  selftests: riscv: Allow mmap test to compile on 32-bit
  riscv: Make riscv_isa_vendor_ext_andes array static
  riscv: Use LIST_HEAD() to simplify code
  riscv: defconfig: Disable RZ/Five peripheral support
  RISC-V: Implement kgdb_roundup_cpus() to enable future NMI Roundup
  riscv: avoid Imbalance in RAS
  riscv: cacheinfo: Add back init_cache_level() function
  riscv: Remove unused _TIF_WORK_MASK
  drivers/perf: riscv: Remove redundant macro check
  riscv: define ILLEGAL_POINTER_VALUE for 64bit
  ...
2024-09-24 10:59:17 -07:00
Linus Torvalds
7108fff884 m68knommu: updates and fixes for v6.12
Fixes include:
 . remove trailing space in pr_debug message
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Merge tag 'm68knommu-for-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

Pull m68knommu fixlet from Greg Ungerer:
 "Only a single change, cleaning up white space in debug message"

* tag 'm68knommu-for-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: remove trailing space after \n newline
2024-09-24 10:48:44 -07:00
Linus Torvalds
1cfb46051d This push fixes the following issues:
- Disable buggy p10 aes-gcm code on powerpc.
 - Fix module aliases in paes_s390.
 - Fix buffer overread in caam.
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Merge tag 'v6.12-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - Disable buggy p10 aes-gcm code on powerpc

 - Fix module aliases in paes_s390

 - Fix buffer overread in caam

* tag 'v6.12-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: powerpc/p10-aes-gcm - Disable CRYPTO_AES_GCM_P10
  crypto: s390/paes - Fix module aliases
  crypto: caam - Pad SG length when allocating hash edesc
2024-09-24 10:46:54 -07:00
Xi Ruoyao
9805f39d42 LoongArch: vDSO: Tune chacha implementation
As Christophe pointed out, tuning the chacha implementation by
scheduling the instructions like what GCC does can improve the
performance.

The tuning does not introduce too much complexity (basically it's just
reordering some instructions). And the tuning does not hurt readibility
too much: actually the tuned code looks even more similar to a
textbook-style implementation based on 128-bit vectors.  So overall it's
a good deal to me.

Tested with vdso_test_getchacha and benched with vdso_test_getrandom.
On a LA664 the speedup is 5%, and I expect a larger speedup on LA[2-4]64
with a lower issue rate.

Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/all/77655d9e-fc05-4300-8f0d-7b2ad840d091@csgroup.eu/
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2024-09-24 14:21:05 +02:00
Xi Ruoyao
64c35d6c0f LoongArch: Remove posix_types.h include from sigcontext.h
Nothing in sigcontext.h seems to require anything from
linux/posix_types.h.  This include seems a MIPS relic originated from
an error in Linux 2.6.11-rc2 (in 2005).

The unneeded include was found debugging some vDSO self test build
failure (it's not the root cause though).

Link: https://lore.kernel.org/linux-mips/20240828030413.143930-2-xry111@xry111.site/
Link: https://lore.kernel.org/loongarch/0b540679ec8cfccec75aeb3463810924f6ff71e6.camel@xry111.site/
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Wentao Guan
5016c3a31a LoongArch: Fix memleak in pci_acpi_scan_root()
Add kfree(root_ops) in this case to avoid memleak of root_ops,
leaks when pci_find_bus() != 0.

Signed-off-by: Yuli Wang <wangyuli@uniontech.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Uros Bizjak
d4f31acf13 LoongArch: Simplify _percpu_read() and _percpu_write()
Now _percpu_read() and _percpu_write() macros call __percpu_read()
and __percpu_write() static inline functions that result in a single
assembly instruction. However, percpu infrastructure expects its leaf
definitions to encode the size of their percpu variable, so the patch
merges all the asm clauses from the static inline function into the
corresponding leaf macros.

The secondary effect of this change is to avoid explicit __percpu
annotations for function arguments. Currently, __percpu macro is defined
in include/linux/compiler_types.h, but with proposed patch [1], __percpu
definition will need macros from include/asm-generic/percpu.h, creating
forward dependency loop.

The proposed solution is the same as x86 architecture uses.

[1] https://lore.kernel.org/lkml/20240812115945.484051-4-ubizjak@gmail.com/

Tested-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Huacai Chen
f93f67d06b LoongArch: Improve hardware page table walker
LoongArch has similar problems explained in commit 7f0b1bf045
("arm64: Fix barriers used for page table modifications"), when hardware
page table walker (PTW) enabled, speculative accesses may cause spurious
page fault in kernel space. Theoretically, in order to completely avoid
spurious page fault we need a "dbar + ibar" pair between the page table
modifications and the subsequent memory accesses using the corresponding
virtual address. But "ibar" is too heavy for performace, so we only use
a "dbar 0b11000" in set_pte(). And let spurious_fault() filter the rest
rare spurious page faults which should be avoided by "ibar".

Besides, we replace the llsc loop with amo in set_pte() which has better
performace, and refactor mmu_context.h to 1) avoid any load/store/branch
instructions between the writing of CSR.ASID & CSR.PGDL, 2) ensure flush
tlb operation is after updating ASID.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Huacai Chen
f04de6d8f2 LoongArch: Add ARCH_HAS_SET_DIRECT_MAP support
Add set_direct_map_*() functions for setting the direct map alias for
the page to its default permissions and to an invalid state that cannot
be cached in a TLB. (See d253ca0c3 ("x86/mm/cpa: Add set_direct_map_*()
functions")) Add a similar implementation for LoongArch.

This fixes the KFENCE warnings during hibernation:

 ==================================================================
 BUG: KFENCE: invalid read in swsusp_save+0x368/0x4d8

 Invalid read at 0x00000000f7b89a3c:
  swsusp_save+0x368/0x4d8
  hibernation_snapshot+0x3f0/0x4e0
  hibernate+0x20c/0x440
  state_store+0x128/0x140
  kernfs_fop_write_iter+0x160/0x260
  vfs_write+0x2c0/0x520
  ksys_write+0x74/0x160
  do_syscall+0xb0/0x160

 CPU: 0 UID: 0 PID: 812 Comm: bash Tainted: G    B              6.11.0-rc1+ #1566
 Tainted: [B]=BAD_PAGE
 Hardware name: Loongson-LS3A5000-7A1000-1w-CRB, BIOS vUDK2018-LoongArch-V2.0.0 10/21/2022
 ==================================================================

Note: We can only set permissions for KVRANGE/XKVRANGE kernel addresses.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Huacai Chen
e86935f705 LoongArch: Add ARCH_HAS_SET_MEMORY support
Add set_memory_ro/rw/x/nx architecture hooks to change the page
attribution.

Use own set_memory.h rather than generic set_memory.h (i.e.
include/asm-generic/set_memory.h), because we want to add other function
prototypes here.

Note: We can only set attributes for KVRANGE/XKVRANGE kernel addresses.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Jiaxun Yang
34e3c4500c LoongArch: Rework CPU feature probe from CPUCFG/IOCSR
Probe ISA level, TLB, IOCSR information from CPUCFG to improve kernel
resilience to different core implementations.

BTW, IOCSR register definition appears to be a platform-specific spec
instead of an architecture spec, even for the Loongson CPUs there is no
guarantee that IOCSR will always present.

Thus it's dangerous to perform IOCSR probing without checking CPU type
and instruction availability.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:20 +08:00
Bibo Mao
d0bb0b6000 LoongArch: Enable ACPI BGRT handling
Add ACPI BGRT support on LoongArch so it can display image provied by
acpi table at boot stage and switch to graphical UI smoothly.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:32:06 +08:00
Tiezhu Yang
e8dd556c74 LoongArch: Enable generic CPU vulnerabilites support
Currently, many architectures support generic CPU vulnerabilites, such
as x86, arm64 and riscv:

 commit 61dc0f555b ("x86/cpu: Implement CPU vulnerabilites sysfs functions")
 commit 61ae1321f0 ("arm64: enable generic CPU vulnerabilites support")
 commit 0e3f3649d4 ("riscv: Enable generic CPU vulnerabilites support")

All LoongArch CPUs (since Loongson-3A5000) implement a special mechanism
in the processor core to prevent "Meltdown" and "Spectre" attacks, so it
can enable generic CPU vulnerabilites support for LoongArch too.

Without this patch, there are no user interfaces of vulnerabilities to
check on LoongArch. The output of those files reflects the state of the
CPUs in the system, the output value "Not affected" means "CPU is not
affected by the vulnerability".

Before:

 # cat /sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow
 cat: /sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow: No such file or directory
 # cat /sys/devices/system/cpu/vulnerabilities/spec_store_bypass
 cat: /sys/devices/system/cpu/vulnerabilities/spec_store_bypass: No such file or directory
 # cat /sys/devices/system/cpu/vulnerabilities/meltdown
 cat: /sys/devices/system/cpu/vulnerabilities/meltdown: No such file or directory

After:

 # cat /sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow
 Not affected
 # cat /sys/devices/system/cpu/vulnerabilities/spec_store_bypass
 Not affected
 # cat /sys/devices/system/cpu/vulnerabilities/meltdown
 Not affected

Link: https://www.loongson.cn/EN/news/show?id=633
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-09-24 15:31:51 +08:00
Linus Torvalds
4e2c9cd7dc i2c-for-6.12-rc1
I2C core
 ========
 
 After 15 years of deprecation, the I2C_COMPAT symbol has finally been
 removed. Also client addresses are now locked during initialization to
 prevent race conditions between different kinds of instantiation. Scoped
 foreach OF child loops are now used. And the testunit has received some
 cleanups and documentation improvements as well as two new tests, one
 for repeated start and one for triggering SMBusAlert interrupts.
 
 I2C host drivers
 ================
 
 The DesignWare and the Renesas I2C drivers have received most of
 the changes in this pull request.
 
 The first has has undergone through a series of cleanups that
 have been sent to the mailing list a year ago for the first time
 and finally get merged in this pull request. They are many, from
 typos (e.g. i2/i2c), to cosmetics, to refactoring (e.g. move
 inline functions to librarieas) and many others.
 
 Besides that, all the DesignWare Kconfig options have been
 grouped under the I2C_DESIGNWARE_CORE and this required some
 adaptation in many of the kernel configuration files for
 different arm and mips boards.
 
 Follows the list of the rest of the changes grouped by type of
 change.
 
 Cleanups
 --------
 The Qualcomm Geni platform improves the exit path in the runtime
 resume function.
 
 The Intel LJCA driver loses "target_addr" parameter in
 ljca_i2c_stop() because it was unused.
 
 The MediaTek controller intializes the restart_flag in the
 transfer function using the ternary conditional operator ("? :")
 instead of initializing it in different parts.
 
 Constified a few global data structures in the virtio driver.
 
 The Renesas driver simplifies the bus speed handling in the init
 function making it more readable.
 
 Improved an if/else statement in probe function of the Renesas
 R-Car driver.
 
 The iMX/MXC driver switches to using the RUNTIME_PM_OPS() instead
 of SET_RUNTIME_PM_OPS().
 
 Still in the iMX/MXC driver a comma ',' has been replaced by a
 semicolon ';', while in different drivers the ',' has been
 removed from the '{ }' delimiters.
 
 Finally three devm_clk_get_enabled() have been used to simplify
 the devm_clk_get/clk_prepare_enable tuple in the Renesas EMEV2,
 Ingenic and MPC drivers.
 
 Refactors
 ---------
 The Nuvoton fixes a potential out of boundary array access. This
 is not a bug fix because the issue could never occur due to
 hardware not having the properties listed in the array. The
 change makes the driver more future proof and, at the same time,
 silences code analyzers.
 
 Improvements
 ------------
 The Renesas I2C (riic) driver undergoes several patches improving
 the runtime power management handling.
 
 The Intel i801 driver uses a more descriptive adapter's name to
 show the presence of the IDF feature.
 
 In the Intel Denverton (ismt) adapter the pending transactions
 are killed when irq's can't complete their handling, triggering a
 timeout. This could have been considered as a bug fix, but
 because, standing to Vasily, it's very sporadic, I preferred
 considering the patch rather as an improvement.
 
 New Feature
 -----------
 The Renesas I2C (riic) driver now supports the fast mode plus.
 
 New support
 -----------
 Added support for:
 
     - Renesas R9A08G045
     - Rockchip RK3576
     - KEBA I2C
     - Theobroma Systems Mule Multiplexer.
 
 The Keba comes with a new driver, i2c-keba.c.
 The Mule is an i2c multiplexer and it also comes with a new
 driver, mux/i2c-mux-mule.c.
 
 Core patch
 ----------
 This pull request includes also a patch in the I2C framework, in
 i2c-core-base.c where the runtime PM functions have been replaced
 in order to allow to be accessed during the device add.
 
 Devicetree
 ----------
 Some cleanups in the devicetree, as well. nVidia and Qualcomm
 bindings improve their "if:then:" blocks. While the aspeed
 binding loses the "multi-master" property because it was
 redundant.
 
 The i2c-sprd binding has been converted to YAML.
 
 AT24 updates
 ============
 
 - document a new model from giantec in DT bindings
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Merge tag 'i2c-for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "I2C core:

   - finally remove the I2C_COMPAT symbol after 15 years of deprecation

   - lock client addresses during initialization to prevent race
     conditions between different kinds of instantiation

   - use scoped foreach OF child loops

   - testunit cleanups and documentation improvements, as well as two
     new tests, one for repeated start and one for triggering SMBusAlert
     interrupts

  I2C host drivers:

   - DesignWare and Renesas I2C driver updates.

     The first has has undergone through a series of cleanups that have
     been sent to the mailing list a year ago for the first time and
     finally get merged in this pull request. They are many, from typos
     (e.g. i2/i2c), to cosmetics, to refactoring (e.g. move inline
     functions to librarieas) and many others.

   - all the DesignWare Kconfig options have been grouped under the
     I2C_DESIGNWARE_CORE and this required some adaptation in many of
     the kernel configuration files for different arm and mips boards

  Cleanups:

   - improve the exit path in the runtime resume function for the
     Qualcomm Geni platform

   - get rid of the unused "target_addr" parameter in the Intel LJCA
     driver

   - intialize the restart_flag in the MediaTek controller in one single
     place

   - constify a few global data structures in the virtio driver

   - simplify the bus speed handling in the Renesas driver init function
     making it more readable

   - improved probe function of the Renesas R-Car driver

   - switch the iMX/MXC driver to use RUNTIME_PM_OPS() instead of
     SET_RUNTIME_PM_OPS()

   - iMX/MXC driver cleanups

   - use devm_clk_get_enabled() to simplify the Renesas EMEV2, Ingenic
     and MPC drivers

  Refactoring:

   - Fix a potential out of boundary array access in the Nuvoton driver.

     This is not a bug fix because the issue could never occur due to
     hardware not having the properties listed in the array. The change
     makes the driver more future proof and, at the same time, silences
     code analyzers.

  Improvements:

   - several patches improving the runtime power management handling of
     the Renesas I2C (riic) driver

   - use a more descriptive adapter name in the Intel i801 driver to
     show the presence of the IDF feature

   - kill pending transactions when irq's can't complete their handling
     in the Intel Denverton (ismt) driver, triggering a timeout

  New Feature:

   - support fast mode plus in the Renesas I2C (riic) driver

  New support:

   - Added support for:
      - Renesas R9A08G045
      - Rockchip RK3576
      - KEBA I2C
      - Theobroma Systems Mule Multiplexer.

   - new i2c-keba.c driver

   - new driver for The Mule i2c multiplexer

  Core I2C framework:

   - move runtime PM functions in order to allow them to be accessed
     during device add

  Devicetree:

   - nVidia and Qualcomm binding improvements

   - get rid of redundant "multi-master" property in the aspeed binding

   - convert i2c-sprd binding to YAML

  AT24 updates:

  - document a new model from giantec in DT bindings"

* tag 'i2c-for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (69 commits)
  i2c: designware: Use pci_get_drvdata()
  i2c: designware: Propagate firmware node
  i2c: designware: Uninline i2c_dw_probe()
  i2c: ljca: Remove unused "target_addr" parameter
  i2c: keba: Add KEBA I2C controller support
  i2c: i801: Use a different adapter-name for IDF adapters
  i2c: core: Setup i2c_adapter runtime-pm before calling device_add()
  dt-bindings: i2c: i2c-sprd: convert to YAML
  i2c: ismt: kill transaction in hardware on timeout
  i2c: designware: Group all DesignWare drivers under a single option
  net: txgbe: Fix I2C Kconfig dependencies
  RISC-V: configs: enable I2C_DESIGNWARE_CORE with I2C_DESIGNWARE_PLATFORM
  mips: configs: enable I2C_DESIGNWARE_CORE with I2C_DESIGNWARE_PLATFORM
  arm64: defconfig: enable I2C_DESIGNWARE_CORE with I2C_DESIGNWARE_PLATFORM
  ARM: configs: enable I2C_DESIGNWARE_CORE with I2C_DESIGNWARE_PLATFORM
  ARC: configs: enable I2C_DESIGNWARE_CORE with I2C_DESIGNWARE_PLATFORM
  i2c: virtio: Constify struct i2c_algorithm and struct virtio_device_id
  i2c: rcar: tidyup priv->devtype handling on rcar_i2c_probe()
  i2c: imx: Convert comma to semicolon
  i2c: jz4780: Use devm_clk_get_enabled() helpers
  ...
2024-09-23 14:34:19 -07:00
Linus Torvalds
8874d92b57 dmaengine updates for v6.12
New support:
   - Support for AMD Versal Gen 2 DMA IP
   - Rcar RZ/G3S SoC dma controller
   - Support for Intel Diamond Rapids and Granite Rapids-D dma controllers
   - Support for Freescale ls1021a-qdma controller
   - New driver for Loongson-1 APB DMA
   - New driver for AMD QDMA
   - Pl08x in LPC32XX router dma driver
 
  Updates:
   - Support for dpdma cyclic dma mode
   - XML conversion for marvell xor dma bindings
   - Dma clocks documentation for imx dma
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Merge tag 'dmaengine-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine updates from Vinod Koul:
 "Unusually, more new driver and device support than updates. Couple of
  new device support, AMD, Rcar, Intel and New drivers in Freescale,
  Loonsoon, AMD and LPC32XX with DT conversion and mode updates etc.

  New support:
   - Support for AMD Versal Gen 2 DMA IP
   - Rcar RZ/G3S SoC dma controller
   - Support for Intel Diamond Rapids and Granite Rapids-D dma controllers
   - Support for Freescale ls1021a-qdma controller
   - New driver for Loongson-1 APB DMA
   - New driver for AMD QDMA
   - Pl08x in LPC32XX router dma driver

  Updates:
   - Support for dpdma cyclic dma mode
   - XML conversion for marvell xor dma bindings
   - Dma clocks documentation for imx dma"

* tag 'dmaengine-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (24 commits)
  dmaengine: loongson1-apb-dma: Fix the build warning caused by the size of pdev_irqname
  dmaengine: Fix spelling mistakes
  dmaengine: Add dma router for pl08x in LPC32XX SoC
  dmaengine: fsl-edma: add edma src ID check at request channel
  dmaengine: fsl-edma: change to guard(mutex) within fsl_edma3_xlate()
  dmaengine: avoid non-constant format string
  dmaengine: imx-dma: Remove i.MX21 support
  dt-bindings: dma: fsl,imx-dma: Document the DMA clocks
  dmaengine: Loongson1: Add Loongson-1 APB DMA driver
  dt-bindings: dma: Add Loongson-1 APB DMA
  dmaengine: zynqmp_dma: Add support for AMD Versal Gen 2 DMA IP
  dt-bindings: dmaengine: zynqmp_dma: Add a new compatible string
  dmaengine: idxd: Add new DSA and IAA device IDs for Diamond Rapids platform
  dmaengine: idxd: Add a new DSA device ID for Granite Rapids-D platform
  dmaengine: ti: k3-udma: Remove unused declarations
  dmaengine: amd: qdma: Add AMD QDMA driver
  dmaengine: xilinx: dpdma: Add support for cyclic dma mode
  dma: ipu: Remove include/linux/dma/ipu-dma.h
  dt-bindings: dma: fsl-mxs-dma: Add compatible string "fsl,imx8qxp-dma-apbh"
  dt-bindings: fsl-qdma: allow compatible string fallback to fsl,ls1021a-qdma
  ...
2024-09-23 14:08:08 -07:00
Linus Torvalds
3a37872316 pci-v6.12-changes
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Merge tag 'pci-v6.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:

   - Wait for device readiness after reset by polling Vendor ID and
     looking for Configuration RRS instead of polling the Command
     register and looking for non-error completions, to avoid hardware
     retries done for RRS on non-Vendor ID reads (Bjorn Helgaas)

   - Rename CRS Completion Status to RRS ('Request Retry Status') to
     match PCIe r6.0 spec usage (Bjorn Helgaas)

   - Clear LBMS bit after a manual link retrain so we don't try to
     retrain a link when there's no downstream device anymore (Maciej W.
     Rozycki)

   - Revert to the original link speed after retraining fails instead of
     leaving it restricted to 2.5GT/s, so a future device has a chance
     to use higher speeds (Maciej W. Rozycki)

   - Wait for each level of downstream bus, not just the first, to
     become accessible before restoring devices on that bus (Ilpo
     Järvinen)

   - Add ARCH_PCI_DEV_GROUPS so s390 can add its own attribute_groups
     without having to stomp on the core's pdev->dev.groups (Lukas
     Wunner)

  Driver binding:

   - Export pcim_request_region(), a managed counterpart of
     pci_request_region(), for use by drivers (Philipp Stanner)

   - Export pcim_iomap_region() and deprecate pcim_iomap_regions()
     (Philipp Stanner)

   - Request the PCI BAR used by xboxvideo (Philipp Stanner)

   - Request and map drm/ast BARs with pcim_iomap_region() (Philipp
     Stanner)

  MSI:

   - Add MSI_FLAG_NO_AFFINITY flag for devices that mux MSIs onto a
     single IRQ line and cannot set the affinity of each MSI to a
     specific CPU core (Marek Vasut)

   - Use MSI_FLAG_NO_AFFINITY and remove unnecessary .irq_set_affinity()
     implementations in aardvark, altera, brcmstb, dwc, mediatek-gen3,
     mediatek, mobiveil, plda, rcar, tegra, vmd, xilinx-nwl,
     xilinx-xdma, and xilinx drivers to avoid 'IRQ: set affinity failed'
     warnings (Marek Vasut)

  Power management:

   - Add pwrctl support for ATH11K inside the WCN6855 package (Konrad
     Dybcio)

  PCI device hotplug:

   - Remove unnecessary hpc_ops struct from shpchp (ngn)

   - Check for PCI_POSSIBLE_ERROR(), not 0xffffffff, in cpqphp
     (weiyufeng)

  Virtualization:

   - Mark Creative Labs EMU20k2 INTx masking as broken (Alex Williamson)

   - Add an ACS quirk for Qualcomm SA8775P, which doesn't advertise ACS
     but does provide ACS-like features (Subramanian Ananthanarayanan)

  IOMMU:

   - Add function 0 DMA alias quirk for Glenfly Arise audio function,
     which uses the function 0 Requester ID (WangYuli)

  NPEM:

   - Add Native PCIe Enclosure Management (NPEM) support for sysfs
     control of NVMe RAID storage indicators (ok/fail/locate/
     rebuild/etc) (Mariusz Tkaczyk)

   - Add support for the ACPI _DSM PCIe SSD status LED management, which
     is functionally similar to NPEM but mediated by platform firmware
     (Mariusz Tkaczyk)

  Device trees:

   - Drop minItems and maxItems from ranges in PCI generic host binding
     since host bridges may have several MMIO and I/O port apertures
     (Frank Li)

   - Add kirin, rcar-gen2, uniphier DT binding top-level constraints for
     clocks (Krzysztof Kozlowski)

  Altera PCIe controller driver:

   - Convert altera DT bindings from text to YAML (Matthew Gerlach)

   - Replace TLP_REQ_ID() with macro PCI_DEVID(), which does the same
     thing and is what other drivers use (Jinjie Ruan)

  Broadcom STB PCIe controller driver:

   - Add DT binding maxItems for reset controllers (Jim Quinlan)

   - Use the 'bridge' reset method if described in the DT (Jim Quinlan)

   - Use the 'swinit' reset method if described in the DT (Jim Quinlan)

   - Add 'has_phy' so the existence of a 'rescal' reset controller
     doesn't imply software control of it (Jim Quinlan)

   - Add support for many inbound DMA windows (Jim Quinlan)

   - Rename SoC 'type' to 'soc_base' express the fact that SoCs come in
     families of multiple similar devices (Jim Quinlan)

   - Add Broadcom 7712 DT description and driver support (Jim Quinlan)

   - Sort enums, pcie_offsets[], pcie_cfg_data, .compatible strings for
     maintainability (Bjorn Helgaas)

  Freescale i.MX6 PCIe controller driver:

   - Add imx6q-pcie 'dbi2' and 'atu' reg-names for i.MX8M Endpoints
     (Richard Zhu)

   - Fix a code restructuring error that caused i.MX8MM and i.MX8MP
     Endpoints to fail to establish link (Richard Zhu)

   - Fix i.MX8MP Endpoint occasional failure to trigger MSI by enforcing
     outbound alignment requirement (Richard Zhu)

   - Call phy_power_off() in the .probe() error path (Frank Li)

   - Rename internal names from imx6_* to imx_* since i.MX7/8/9 are also
     supported (Frank Li)

   - Manage Refclk by using SoC-specific callbacks instead of switch
     statements (Frank Li)

   - Manage core reset by using SoC-specific callbacks instead of switch
     statements (Frank Li)

   - Expand comments for erratum ERR010728 workaround (Frank Li)

   - Use generic PHY APIs to configure mode, speed, and submode, which
     is harmless for devices that implement their own internal PHY
     management and don't set the generic imx_pcie->phy (Frank Li)

   - Add i.MX8Q (i.MX8QM, i.MX8QXP, and i.MX8DXL) DT binding and driver
     Root Complex support (Richard Zhu)

  Freescale Layerscape PCIe controller driver:

   - Replace layerscape-pcie DT binding compatible fsl,lx2160a-pcie with
     fsl,lx2160ar2-pcie (Frank Li)

   - Add layerscape-pcie DT binding deprecated 'num-viewport' property
     to address a DT checker warning (Frank Li)

   - Change layerscape-pcie DT binding 'fsl,pcie-scfg' to phandle-array
     (Frank Li)

  Loongson PCIe controller driver:

   - Increase max PCI hosts to 8 for Loongson-3C6000 and newer chipsets
     (Huacai Chen)

  Marvell Aardvark PCIe controller driver:

   - Fix issue with emulating Configuration RRS for two-byte reads of
     Vendor ID; previously it only worked for four-byte reads (Bjorn
     Helgaas)

  MediaTek PCIe Gen3 controller driver:

   - Add per-SoC struct mtk_gen3_pcie_pdata to support multiple SoC
     types (Lorenzo Bianconi)

   - Use reset_bulk APIs to manage PHY reset lines (Lorenzo Bianconi)

   - Add DT and driver support for Airoha EN7581 PCIe controller
     (Lorenzo Bianconi)

  Qualcomm PCIe controller driver:

   - Update qcom,pcie-sc7280 DT binding with eight interrupts (Rayyan
     Ansari)

   - Add back DT 'vddpe-3v3-supply', which was incorrectly removed
     earlier (Johan Hovold)

   - Drop endpoint redundant masking of global IRQ events (Manivannan
     Sadhasivam)

   - Clarify unknown global IRQ message and only log it once to avoid a
     flood (Manivannan Sadhasivam)

   - Add 'linux,pci-domain' property to endpoint DT binding (Manivannan
     Sadhasivam)

   - Assign PCI domain number for endpoint controllers (Manivannan
     Sadhasivam)

   - Add 'qcom_pcie_ep' and the PCI domain number to IRQ names for
     endpoint controller (Manivannan Sadhasivam)

   - Add global SPI interrupt for PCIe link events to DT binding
     (Manivannan Sadhasivam)

   - Add global RC interrupt handler to handle 'Link up' events and
     automatically enumerate hot-added devices (Manivannan Sadhasivam)

   - Avoid mirroring of DBI and iATU register space so it doesn't
     overlap BAR MMIO space (Prudhvi Yarlagadda)

   - Enable controller resources like PHY only after PERST# is
     deasserted to partially avoid the problem that the endpoint SoC
     crashes when accessing things when Refclk is absent (Manivannan
     Sadhasivam)

   - Add 16.0 GT/s equalization and RX lane margining settings (Shashank
     Babu Chinta Venkata)

   - Pass domain number to pci_bus_release_domain_nr() explicitly to
     avoid a NULL pointer dereference (Manivannan Sadhasivam)

  Renesas R-Car PCIe controller driver:

   - Make the read-only const array 'check_addr' static (Colin Ian King)

   - Add R-Car V4M (R8A779H0) PCIe host and endpoint to DT binding
     (Yoshihiro Shimoda)

  TI DRA7xx PCIe controller driver:

   - Request IRQF_ONESHOT for 'dra7xx-pcie-main' IRQ since the primary
     handler is NULL (Siddharth Vadapalli)

   - Handle IRQ request errors during root port and endpoint probe
     (Siddharth Vadapalli)

  TI J721E PCIe driver:

   - Add DT 'ti,syscon-acspcie-proxy-ctrl' and driver support to enable
     the ACSPCIE module to drive Refclk for the Endpoint (Siddharth
     Vadapalli)

   - Extract the cadence link setup from cdns_pcie_host_setup() so link
     setup can be done separately during resume (Thomas Richard)

   - Add T_PERST_CLK_US definition for the mandatory delay between
     Refclk becoming stable and PERST# being deasserted (Thomas Richard)

   - Add j721e suspend and resume support (Théo Lebrun)

  TI Keystone PCIe controller driver:

   - Fix NULL pointer checking when applying MRRS limitation quirk for
     AM65x SR 1.0 Errata #i2037 (Dan Carpenter)

  Xilinx NWL PCIe controller driver:

   - Fix off-by-one error in INTx IRQ handler that caused INTx
     interrupts to be lost or delivered as the wrong interrupt (Sean
     Anderson)

   - Rate-limit misc interrupt messages (Sean Anderson)

   - Turn off the clock on probe failure and device removal (Sean
     Anderson)

   - Add DT binding and driver support for enabling/disabling PHYs (Sean
     Anderson)

   - Add PCIe phy bindings for the ZCU102 (Sean Anderson)

  Xilinx XDMA PCIe controller driver:

   - Add support for Xilinx QDMA Soft IP PCIe Root Port Bridge to DT
     binding and xilinx-dma-pl driver (Thippeswamy Havalige)

  Miscellaneous:

   - Fix buffer overflow in kirin_pcie_parse_port() (Alexandra Diupina)

   - Fix minor kerneldoc issues and typos (Bjorn Helgaas)

   - Use PCI_DEVID() macro in aer_inject() instead of open-coding it
     (Jinjie Ruan)

   - Check pcie_find_root_port() return in x86 fixups to avoid NULL
     pointer dereferences (Samasth Norway Ananda)

   - Make pci_bus_type constant (Kunwu Chan)

   - Remove unused declarations of __pci_pme_wakeup() and
     pci_vpd_release() (Yue Haibing)

   - Remove any leftover .*.cmd files with make clean (zhang jiao)

   - Remove unused BILLION macro (zhang jiao)"

* tag 'pci-v6.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (132 commits)
  PCI: Fix typos
  dt-bindings: PCI: qcom: Allow 'vddpe-3v3-supply' again
  tools: PCI: Remove unused BILLION macro
  tools: PCI: Remove .*.cmd files with make clean
  PCI: Pass domain number to pci_bus_release_domain_nr() explicitly
  PCI: dra7xx: Fix error handling when IRQ request fails in probe
  PCI: dra7xx: Fix threaded IRQ request for "dra7xx-pcie-main" IRQ
  PCI: qcom: Add RX lane margining settings for 16.0 GT/s
  PCI: qcom: Add equalization settings for 16.0 GT/s
  PCI: dwc: Always cache the maximum link speed value in dw_pcie::max_link_speed
  PCI: dwc: Rename 'dw_pcie::link_gen' to 'dw_pcie::max_link_speed'
  PCI: qcom-ep: Enable controller resources like PHY only after refclk is available
  PCI: Mark Creative Labs EMU20k2 INTx masking as broken
  dt-bindings: PCI: imx6q-pcie: Add reg-name "dbi2" and "atu" for i.MX8M PCIe Endpoint
  dt-bindings: PCI: altera: msi: Convert to YAML
  PCI: imx6: Add i.MX8Q PCIe Root Complex (RC) support
  PCI: Rename CRS Completion Status to RRS
  PCI: aardvark: Correct Configuration RRS checking
  PCI: Wait for device readiness with Configuration RRS
  PCI: brcmstb: Sort enums, pcie_offsets[], pcie_cfg_data, .compatible strings
  ...
2024-09-23 12:47:06 -07:00
Linus Torvalds
f8ffbc365f struct fd layout change (and conversion to accessor helpers)
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Merge tag 'pull-stable-struct_fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull 'struct fd' updates from Al Viro:
 "Just the 'struct fd' layout change, with conversion to accessor
  helpers"

* tag 'pull-stable-struct_fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  add struct fd constructors, get rid of __to_fd()
  struct fd: representation change
  introduce fd_file(), convert all accessors to it.
2024-09-23 09:35:36 -07:00
Heiko Carstens
d714abee5f s390/vdso: Use one large alternative instead of an alternative branch
Replace the alternative branch with a larger alternative that contains
both paths. That way the two paths are closer together and it is easier
to change both paths if the need should arise.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2024-09-23 17:57:04 +02:00
Heiko Carstens
c902b578ee s390/vdso: Use SYM_DATA_START_LOCAL()/SYM_DATA_END() for data objects
Use SYM_DATA_START_LOCAL()/SYM_DATA_END() in vgetrandom-chacha.S so
that the constants end up in an object with correct size:

readelf -Ws vgetrandom-chacha.o
   Num:    Value          Size Type    Bind   Vis      Ndx Name
   ...
     5: 0000000000000000    32 OBJECT  LOCAL  DEFAULT    5 chacha20_constants

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2024-09-23 17:57:04 +02:00
Jens Remus
d361390d9f s390/vdso: Use macros for annotation of asm functions
Use the macros SYM_FUNC_START() and SYM_FUNC_END() to annotate the
functions in assembly.

Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2024-09-23 17:57:04 +02:00