* [to-be-updated] arm64-vmalloc-allow-arch_vmap_pte_range_map_size-to-batch-multiple-cont_pte.patch removed from -mm tree
@ 2026-07-05 20:36 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2026-07-05 20:36 UTC (permalink / raw)
To: mm-commits, baohua, akpm
The quilt patch titled
Subject: arm64/vmalloc: allow arch_vmap_pte_range_map_size to batch multiple CONT_PTE
has been removed from the -mm tree. Its filename was
arm64-vmalloc-allow-arch_vmap_pte_range_map_size-to-batch-multiple-cont_pte.patch
This patch was dropped because an updated version will be issued
------------------------------------------------------
From: "Barry Song (Xiaomi)" <baohua@kernel.org>
Subject: arm64/vmalloc: allow arch_vmap_pte_range_map_size to batch multiple CONT_PTE
Date: Thu, 18 Jun 2026 16:47:22 +0800
Allow arch_vmap_pte_range_map_size to batch across multiple CONT_PTE
blocks, reducing both PTE setup and TLB flush iterations.
Link: https://lore.kernel.org/20260618084726.1070022-3-jiangwen6@xiaomi.com
Signed-off-by: Barry Song (Xiaomi) <baohua@kernel.org>
Signed-off-by: Wen Jiang <jiangwen6@xiaomi.com>
Tested-by: Xueyuan Chen <xueyuan.chen21@gmail.com>
Tested-by: Leo Yan <leo.yan@arm.com>
Cc: Andrew Donnellan <ajd@linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Wen Jiang <jiangwenxiaomi@gmail.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/arm64/include/asm/vmalloc.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/arch/arm64/include/asm/vmalloc.h~arm64-vmalloc-allow-arch_vmap_pte_range_map_size-to-batch-multiple-cont_pte
+++ a/arch/arm64/include/asm/vmalloc.h
@@ -23,6 +23,8 @@ static inline unsigned long arch_vmap_pt
unsigned long end, u64 pfn,
unsigned int max_page_shift)
{
+ unsigned long size;
+
/*
* If the block is at least CONT_PTE_SIZE in size, and is naturally
* aligned in both virtual and physical space, then we can pte-map the
@@ -40,7 +42,9 @@ static inline unsigned long arch_vmap_pt
if (!IS_ALIGNED(PFN_PHYS(pfn), CONT_PTE_SIZE))
return PAGE_SIZE;
- return CONT_PTE_SIZE;
+ size = min3(end - addr, 1UL << max_page_shift, PMD_SIZE >> 1);
+ size = 1UL << __fls(size);
+ return size;
}
#define arch_vmap_pte_range_unmap_size arch_vmap_pte_range_unmap_size
_
Patches currently in -mm which might be from baohua@kernel.org are
mm-vmalloc-extend-page-table-walk-to-support-larger-page_shift-sizes-and-eliminate-page-table-rewalk.patch
mm-vmalloc-map-contiguous-pages-in-batches-for-vmap-if-possible.patch
mm-vmalloc-align-vm_area-so-vmap-can-batch-mappings.patch
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2026-07-05 20:36 [to-be-updated] arm64-vmalloc-allow-arch_vmap_pte_range_map_size-to-batch-multiple-cont_pte.patch removed from -mm tree Andrew Morton
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