From: Gavin Shan Date: Fri, 5 Apr 2024 03:58:52 +0000 (+1000) Subject: arm64: tlb: Allow range operation for MAX_TLBI_RANGE_PAGES X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=73301e464a72a0d007d0d4e0f4d3dab5c58125bf;p=linux.git arm64: tlb: Allow range operation for MAX_TLBI_RANGE_PAGES MAX_TLBI_RANGE_PAGES pages is covered by SCALE#3 and NUM#31 and it's supported now. Allow TLBI RANGE operation when the number of pages is equal to MAX_TLBI_RANGE_PAGES in __flush_tlb_range_nosync(). Suggested-by: Marc Zyngier Signed-off-by: Gavin Shan Reviewed-by: Anshuman Khandual Reviewed-by: Ryan Roberts Reviewed-by: Catalin Marinas Reviewed-by: Shaoqin Huang Link: https://lore.kernel.org/r/20240405035852.1532010-4-gshan@redhat.com Signed-off-by: Will Deacon --- diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index 243d71f7bc1f6..95fbc8c056079 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -446,11 +446,11 @@ static inline void __flush_tlb_range_nosync(struct vm_area_struct *vma, * When not uses TLB range ops, we can handle up to * (MAX_DVM_OPS - 1) pages; * When uses TLB range ops, we can handle up to - * (MAX_TLBI_RANGE_PAGES - 1) pages. + * MAX_TLBI_RANGE_PAGES pages. */ if ((!system_supports_tlb_range() && (end - start) >= (MAX_DVM_OPS * stride)) || - pages >= MAX_TLBI_RANGE_PAGES) { + pages > MAX_TLBI_RANGE_PAGES) { flush_tlb_mm(vma->vm_mm); return; }