Pull RISC-V fixes from Paul Walmsley:

 - Call flush_cache_vmap() after populating new vmemmap pages, on all
   architectures. This avoids spurious faults on RISC-V
   microarchitectures that cache PTEs marked as non-present

 - Disable LTO for the vDSO to prevent the compiler from eliding
   functions that are used, but which don't appear to be

 - Fix an issue with libgcc's unwinder and signal handlers by dropping
   an unnecessary CFI landing pad instruction in __vdso_rt_sigreturn
   (similar to what was done on ARM64)

 - Avoid reading uninitialized memory under certain conditions in
   hwprobe_get_cpus()

 - Save some memory and I$ when CONFIG_DYNAMIC_FTRACE=n by avoiding our
   four-byte function alignment requirement in that case

 - Avoid clang warnings about null-pointer arithmetic in the I/O-port
   accessor macros (inb, outb, etc.) by ifdeffing them out when
   !CONFIG_HAS_IOPORT

 - Make the build of the lazy TLB flushing code in the vmalloc path
   depend on CONFIG_64BIT and CONFIG_MMU (since those platforms are the
   only ones that use it)

* tag 'riscv-for-linus-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: hwprobe: Avoid uninitialized read in hwprobe_get_cpus()
  arch/riscv: vdso: remove CFI landing pad from rt_sigreturn
  riscv: vdso: Do not use LTO for the vDSO
  riscv: io: avoid null-pointer arithmetic in PIO helpers
  riscv: Gate FUNCTION_ALIGNMENT_4B on DYNAMIC_FTRACE
  mm/sparse-vmemmap: flush_cache_vmap() after hotplugging vmemmap
  riscv: mm: Make mark_new_valid_map() stuff depend on 64BIT && MMU

Pull x86 fixes from Ingo Molnar:

 - Reject too long acpi_rsdp= boot parameter values (Thorsten Blum)

 - Validate console=uart8250 baud rate to fix early boot hang (Thorsten
   Blum)

 - Remove dead Makefile rule (Ethan Nelson-Moore)

* tag 'x86-urgent-2026-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot: Validate console=uart8250 baud rate to fix early boot hang
  x86/boot: Reject too long acpi_rsdp= values
  x86/cpu: Remove Makefile rule for removed UMC CPU support

Pull s390 fixes from Vasily Gorbik:

 - Fix checksum lib on machines without the vector facility where the
   non-vector fallback made csum_partial() calculate the checksum from
   address 0 instead of the provided buffer

 - Fix cpum_cf perf event initialization missing speculation barrier for
   user controlled event numbers used as generic event array indexes

* tag 's390-7.2-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()
  s390/checksum: Fix csum_partial() without vector facility

Pull ARC fixes from Vineet Gupta:

 - Misc fixes and config updates

* tag 'arc-7.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: configs: Drop redundant I2C_DESIGNWARE_PLATFORM
  arc: validate DT CPU map strings before parsing them

Pull SoC fixes from Arnd Bergmann:
 "There are only three devicetree fixes this time: one critical memory
  corruption fix for Renesas and three minor corrections for Tegra.

  The MAINTAINERS file is updated for a new maintainer of the CIX
  platform and two address changes.

  The rest is all driver fixes, mostly firmware:

   - multiple runtime issues in ARM SCMI and FF-A firmware code, dealing
     with error handling for corner cases in firmware.

   - multiple fixes for reset drivers, dealing with individual platform
     specific mistakes and more error handling

   - minor build and runtime fixes for the Tegra SoC drivers"

* tag 'soc-fixes-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  arm64: dts: renesas: ironhide: Describe inline ECC carveouts
  MAINTAINERS: Update maintainer and git tree for CIX SoC
  ARM: Don't let ARMv5 platforms select USE_OF
  MAINTAINERS: Update SpacemiT SoC git tree repository
  firmware: arm_scmi: Rate-limit queue-full warnings in IRQ context
  firmware: arm_scmi: Use 64-bit division for clock rate rounding
  reset: imx7: Correct polarity of MIPI CSI resets on i.MX8MQ
  reset: sunxi: fix memory region leak on ioremap failure
  dt-bindings: reset: altr: add COMBOPHY_RESET for Agilex5
  reset: spacemit: k3: fix USB2 ahb reset
  firmware: arm_scmi: Grammar s/may needed/may be needed/
  firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()
  firmware: arm_ffa: Respect firmware advertised RX/TX buffer size limits
  arm64: tegra: Fix CPU1 node unit-address on Tegra264
  arm64: tegra: Fix CPU compatible string to cortex-a78ae on Tegra234
  MAINTAINERS: .mailmap: update Jens Wiklander's email address
  soc/tegra: fuse: Fix spurious straps warning on SMCCC platforms
  soc/tegra: pmc: fix #ifdef block in header
  drm/tegra: Fix a strange error handling path
  arm64: tegra: Remove fallback compatible for GPCDMA

Pull powerpc fixes from Madhavan Srinivasan:

 - Enable CONFIG_VPA_PMU to be used with KVM

 - Initialize starttime at boot for native accounting

 - Set CPU_FTR_P11_PVR for Power11 and later processors

 - fix memory leak on krealloc failure in papr_init

 - Misc fixes and cleanups

Thanks to Amit Machhiwal, Christophe Leroy (CS GROUP), Ethan
Nelson-Moore, Gautam Menghani, Harsh Prateek Bora, Junrui Luo, Mukesh
Kumar Chaurasiya (IBM), Ritesh Harjani (IBM), Rosen Penev, Shrikanth
Hegde, Thorsten Blum, and Yuhao Jiang

* tag 'powerpc-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Remove dead non-preemption code
  powerpc/dt_cpu_ftrs: Set CPU_FTR_P11_PVR for Power11 and later processors
  powerpc/pseries: fix memory leak on krealloc failure in papr_init
  powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address()
  powerpc/vtime: Initialize starttime at boot for native accounting
  powerpc/85xx: Add fsl,ifc to common device ids
  powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access()
  powerpc/pseries/Kconfig: Enable CONFIG_VPA_PMU to be used with KVM

Renesas fixes for v7.2

  - Fix lock-ups on the Ironhide development board.

* tag 'renesas-fixes-for-v7.2-tag1' of https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  arm64: dts: renesas: ironhide: Describe inline ECC carveouts

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

If a vCPU stays scheduled out (or blocked) while the last pCPU it ran
on goes through a hotplug cycle (online->offline->online), and the vCPU
then resumes execution on the same pCPU, then it is possible for it to
run with an ASID that has now been assigned to a different vCPU,
resulting in stale TLB translations being used.

svm_enable_virtualization_cpu() resets asid_generation to 1 and sets
next_asid to max_asid + 1 on every CPU online event, including hotplug
cycles.  Because next_asid starts beyond the pool boundary, the first
call to new_asid() after an online event always wraps the pool,
incrementing asid_generation to 2 and assigning ASIDs starting from
min_asid.

Consider two vCPUs from different VMs, vCPU-A pinned to CPU-X holding
asid_generation=2 and ASID=N from before the hotplug event:

  1. CPU-X goes offline and back online: asid_generation resets to 1,
     next_asid = max_asid + 1.

  2. One or more vCPUs migrate to CPU-X and call new_asid(), wrapping
     the pool and consuming ASIDs starting from min_asid.  Eventually
     vCPU-B from a different VM is assigned asid_generation=2, ASID=N
     — the same ASID that vCPU-A held before the hotplug.

  3. vCPU-A enters pre_svm_run() on CPU-X: current_vmcb->cpu is
     unchanged so the migration branch is skipped.  Its saved
     asid_generation=2 matches sd->asid_generation=2, so the generation
     check silently passes and vCPU-A continues running with ASID=N —
     the same ASID just freshly assigned to vCPU-B.

Both vCPUs from different VMs now run on CPU-X with the same ASID,
causing them to share NPT TLB entries and producing stale translations.

The collision manifests as a KVM internal error (Suberror: 1, emulation
failure).  The NPT page fault reports a faulting GPA far outside the
VM's physical memory range — a sign of stale TLB translations being
used.  KVM falls back to instruction emulation, which fails on
FPU/XSave instructions (XRSTOR, STMXCSR) that the emulator does not
implement.

Fix this by incrementing asid_generation instead of resetting it to 1
in svm_enable_virtualization_cpu().  On module load, asid_generation
starts at 0 (memset) and the increment produces 1, identical to the
old behaviour.  On subsequent hotplug cycles the generation advances
beyond any value a vCPU previously observed on this CPU, so the
generation check in pre_svm_run() reliably forces new_asid() on every
vCPU after every hotplug cycle.

Fixes: 774c47f1d78e ("[PATCH] KVM: cpu hotplug support")
Reported-by: Chandrakanth Silveru <Chandrakanth.Silveru@amd.com>
Tested-by: Srikanth Aithal <Srikanth.Aithal@amd.com>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Message-ID: <20260715063506.672432-1-nikunj@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

When cpusetsize < cpumask_size(), hwprobe_get_cpus() did not fully
initialize its copy of the cpu mask, which could cause non-deterministic
results from the riscv_hwprobe syscall on a system with more than 8 CPUs
when the supplied cpu mask is empty.  Address this by fully initializing
the cpu mask.

Fixes: e178bf146e4b ("RISC-V: hwprobe: Introduce which-cpus flag")
Signed-off-by: Mark Harris <mark.hsj@gmail.com>
Reviewed-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@kernel.org>
Link: https://patch.msgid.link/20260714003056.73707-1-mark.hsj@gmail.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>

ev variable is userspace controlled via event->attr.config and used
as an array index after bounds checking, but without speculation
barriers.

Add the missing array_index_nospec() call to prevent speculative
execution.

Cc: stable@vger.kernel.org
Fixes: 212188a596d1 ("[S390] perf: add support for s390x CPU counters")
Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>