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authorIngo Molnar <mingo@kernel.org>2025-11-12 10:40:26 +0100
committerIngo Molnar <mingo@kernel.org>2025-11-12 12:12:28 +0100
commit9929dffce5ed7e2988e0274f4db98035508b16d9 (patch)
treef5c4481cc08b0e2b36db4c1aaafdbd2a33f8a6af
parent2093d8cf80fa5552d1025a78a8f3a10bf3b6466e (diff)
perf/x86/intel: Fix and clean up intel_pmu_drain_arch_pebs() type use
The following commit introduced a build failure on x86-32: 21954c8a0ff ("perf/x86/intel: Process arch-PEBS records or record fragments") ... arch/x86/events/intel/ds.c:2983:24: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] The forced type conversion to 'u64' and 'void *' are not 32-bit clean, but they are also entirely unnecessary: ->pebs_vaddr is 'void *' already, and integer-compatible pointer arithmetics will work just fine on it. Fix & simplify the code. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: d21954c8a0ff ("perf/x86/intel: Process arch-PEBS records or record fragments") Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Dapeng Mi <dapeng1.mi@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Link: https://patch.msgid.link/20251029102136.61364-10-dapeng1.mi@linux.intel.com
-rw-r--r--arch/x86/events/intel/ds.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index c93bf971d97b..2e170f2093ac 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -2979,8 +2979,7 @@ static void intel_pmu_drain_arch_pebs(struct pt_regs *iregs,
}
base = cpuc->pebs_vaddr;
- top = (void *)((u64)cpuc->pebs_vaddr +
- (index.wr << ARCH_PEBS_INDEX_WR_SHIFT));
+ top = cpuc->pebs_vaddr + (index.wr << ARCH_PEBS_INDEX_WR_SHIFT);
index.wr = 0;
index.full = 0;