Subject: linux-next: build failure after merge of the tip tree

From: Stephen Rothwell <[email-masked]>
Date: Wed, 12 Nov 2025 15:42:00 +1100

Hi all,

After merging the tip tree, today's linux-next build (i386 defconfig)
failed like this:

arch/x86/events/intel/ds.c: In function 'intel_pmu_drain_arch_pebs':
arch/x86/events/intel/ds.c:2983:24: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
 2983 |         top = (void *)((u64)cpuc->pebs_vaddr +
      |                        ^
arch/x86/events/intel/ds.c:2983:15: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
 2983 |         top = (void *)((u64)cpuc->pebs_vaddr +
      |               ^
cc1: all warnings being treated as errors

Caused by commit

  d21954c8a0ff ("perf/x86/intel: Process arch-PEBS records or record fragments")

I have reverted commits

  2093d8cf80fa ("perf/x86/intel: Optimize PEBS extended config")
  02da693f6658 ("perf/x86/intel: Check PEBS dyn_constraints")
  bd24f9beed59 ("perf/x86/intel: Add a check for dynamic constraints")
  bb5f13df3c45 ("perf/x86/intel: Add counter group support for arch-PEBS")
  52448a0a7390 ("perf/x86/intel: Setup PEBS data configuration and enable legacy groups")
  e89c5d1f290e ("perf/x86/intel: Update dyn_constraint base on PEBS event precise level")
  2721e8da2de7 ("perf/x86/intel: Allocate arch-PEBS buffer and initialize PEBS_BASE MSR")
  d21954c8a0ff ("perf/x86/intel: Process arch-PEBS records or record fragments")

for today.

-- 
Cheers,
Stephen Rothwell