Re: [PATCH v3 03/13] powerpc/mm: implement arch_flush_lazy_mmu_mode()
From: David Hildenbrand <hidden>
Date: 2025-10-24 14:42:16
Also in:
linux-arm-kernel, linux-mm, lkml, sparclinux, xen-devel
On 24.10.25 14:09, Kevin Brodsky wrote:
On 23/10/2025 21:36, David Hildenbrand wrote:quoted
On 15.10.25 10:27, Kevin Brodsky wrote:quoted
[...]diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.hb/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?
Oh, right. Consider mentioning in the patch description "Note that follow-up patches will remove the double this_cpu_ptr() on the arch_leave_lazy_mmu_mode() path again." -- Cheers David / dhildenb