Merge tag 'perf-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipHEADmaster

Pull perf events updates from Ingo Molnar:

 - Support SIMD/eGPRs/SSP register sampling in perf
   (Dapeng Mi, Kan Liang)

 - Turn amd_uncore_ctx events into a flexible array (Rosen Penev)

 - Finish the work related to fixing the guest PEBS path to not
   set unwanted PERF_GLOBAL_CTRL bits, for which urgent fixes
   are upstream already (Sean Christopherson)

 - Drop redundant counter slot searches in the AMD uncore
   driver (Usama Arif)

 - Don't WARN when the ext_regs_buf allocation fails (vineash)

 - Annotate x86_pmu::hybrid_pmu with __counted_by_ptr (Thorsten Blum)

* tag 'perf-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  perf/x86: Don't WARN when the ext_regs_buf allocation fails
  perf/x86/amd/uncore: Free counter slot by index
  perf/x86/amd/uncore: Remove redundant event slot scan
  perf/x86/intel: Check only PMC bits in PEBS_ENABLED when detecting host PEBS usage
  KVM: VMX: Only tell perf to enable PEBS counters for fully enabled PMCs
  KVM: VMX: Drop a redundant pmu->global_ctrl check when processing pebs_enable
  perf/x86/intel: KVM: Handle cross-mapped PEBS PMCs entirely within KVM
  perf/x86: KVM: Have perf define a dedicated struct for getting guest PEBS data
  perf/x86/intel: Invert names of intel_ctrl_{guest,host}_mask
  perf/x86/intel: Annotate x86_pmu::hybrid_pmu with __counted_by_ptr
  perf/x86/amd/uncore: Turn amd_uncore_ctx events into a flexible array
  perf/x86/intel: Add sanity check for PEBS record/fragment size
  perf/x86: Activate back-to-back NMI detection for arch-PEBS induced NMIs
  perf/x86/intel: Advertise PERF_PMU_CAP_SIMD_REGS capability
  perf/x86/intel: Support arch-PEBS based SIMD/eGPRs sampling
  perf/x86: Support SSP sampling using sample_regs_* fields
  perf/x86: Support eGPRs sampling using sample_regs_* fields
  perf: Enhance perf_reg_validate() with simd_enabled argument
  perf/x86: Support OPMASK sampling using sample_simd_pred_reg_* fields
  perf/x86: Support ZMM sampling using sample_simd_vec_reg_* fields
  ...

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