From 17b6fc88eb31a10726b702cf07ea998e9828d478 Mon Sep 17 00:00:00 2001 From: Usama Arif Date: Tue, 7 Feb 2023 11:44:56 +0000 Subject: docs: mm: Fix number of base pages for 1GB HugeTLB 1GB HugeTLB page consists of 262144 base pages. Signed-off-by: Usama Arif Reviewed-by: David Hildenbrand Acked-by: Mike Rapoport (IBM) Acked-by: Muchun Song Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20230207114456.2304801-1-usama.arif@bytedance.com --- Documentation/mm/vmemmap_dedup.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Documentation/mm') diff --git a/Documentation/mm/vmemmap_dedup.rst b/Documentation/mm/vmemmap_dedup.rst index a4b12ff906c4..689a6907c70b 100644 --- a/Documentation/mm/vmemmap_dedup.rst +++ b/Documentation/mm/vmemmap_dedup.rst @@ -1,3 +1,4 @@ + .. SPDX-License-Identifier: GPL-2.0 ========================================= @@ -17,7 +18,7 @@ HugeTLB pages consist of multiple base page size pages and is supported by many architectures. See Documentation/admin-guide/mm/hugetlbpage.rst for more details. On the x86-64 architecture, HugeTLB pages of size 2MB and 1GB are currently supported. Since the base page size on x86 is 4KB, a 2MB HugeTLB page -consists of 512 base pages and a 1GB HugeTLB page consists of 4096 base pages. +consists of 512 base pages and a 1GB HugeTLB page consists of 262144 base pages. For each base page, there is a corresponding ``struct page``. Within the HugeTLB subsystem, only the first 4 ``struct page`` are used to -- cgit v1.2.3