On 23/10/2025 21:36, David Hildenbrand wrote:

On 15.10.25 10:27, Kevin Brodsky wrote:

quoted

[...]

diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h

b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h
index 146287d9580f..7704dbe8e88d 100644

--- a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h
+++ b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h

@@ -41,6 +41,16 @@ static inline void arch_enter_lazy_mmu_mode(void)

      batch->active = 1;
  }
  +static inline void arch_flush_lazy_mmu_mode(void)
+{
+    struct ppc64_tlb_batch *batch;
+
+    batch = this_cpu_ptr(&ppc64_tlb_batch);

The downside is the double this_cpu_ptr() now on the
arch_leave_lazy_mmu_mode() path.

This is only temporary, patch 9 removes it from arch_enter(). I don't
think having a redundant this_cpu_ptr() for a few commits is really a
concern?

Same idea for patch 4/10.

- Kevin