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| author | Usama Arif <usama.arif@bytedance.com> | 2023-02-07 14:44:56 +0300 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2023-08-18 20:03:52 +0300 |
| commit | 17b6fc88eb31a10726b702cf07ea998e9828d478 (patch) | |
| tree | 8f73d9d1ac6137643e29e0eabd812dfbb0cccaa8 /Documentation | |
| parent | fe1185941b0f179d338aff90d42e37b538ff3ffb (diff) | |
| download | linux-17b6fc88eb31a10726b702cf07ea998e9828d478.tar.xz | |
docs: mm: Fix number of base pages for 1GB HugeTLB
1GB HugeTLB page consists of 262144 base pages.
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230207114456.2304801-1-usama.arif@bytedance.com
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/mm/vmemmap_dedup.rst | 3 |
1 files changed, 2 insertions, 1 deletions
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 |