Commit 17b6fc88 authored by Usama Arif's avatar Usama Arif Committed by Jonathan Corbet
Browse files

docs: mm: Fix number of base pages for 1GB HugeTLB 



1GB HugeTLB page consists of 262144 base pages.

Signed-off-by: default avatarUsama Arif <usama.arif@bytedance.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Acked-by: default avatarMike Rapoport (IBM) <rppt@kernel.org>
Acked-by: default avatarMuchun Song <songmuchun@bytedance.com>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230207114456.2304801-1-usama.arif@bytedance.com
parent fe118594

Documentation/mm/vmemmap_dedup.rst

+2 −1
Original line number Diff line number Diff line 


.. 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