Re: [External] Re: [PATCH] docs: mm: Fix number of base pages for 1GB HugeTLB

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On 08/02/2023 09:51, Mike Rapoport wrote:
On Tue, Feb 07, 2023 at 11:44:56AM +0000, Usama Arif wrote:
1GB HugeTLB page consists of 262144 base pages.

Signed-off-by: Usama Arif <usama.arif@xxxxxxxxxxxxx>

Acked-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>

---
  Documentation/mm/vmemmap_dedup.rst | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

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
--
2.25.1



Hi,

Was just reading vmemmap_dedup.rst for something and realized that its still 4096 pages for 1G, maybe this patch got missed?

Thanks,
Usama




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