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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-31 06:05:42 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-31 06:05:42 +0300 |
commit | cd99b9eb4b702563c5ac7d26b632a628f5a832a5 (patch) | |
tree | ff96773806b6bb1efece11d8b7678ae43d71411e /Documentation/mm/vmemmap_dedup.rst | |
parent | f8fd5c24830fbc259ba7d5e72817c9867c01b8e8 (diff) | |
parent | c63594f2d66690805eb78b75e4b8e8dc9f2672bf (diff) | |
download | linux-cd99b9eb4b702563c5ac7d26b632a628f5a832a5.tar.xz |
Merge tag 'docs-6.6' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Documentation work keeps chugging along; this includes:
- Work from Carlos Bilbao to integrate rustdoc output into the
generated HTML documentation. This took some work to figure out how
to do it without slowing the docs build and without creating people
who don't have Rust installed, but Carlos got there
- Move the loongarch and mips architecture documentation under
Documentation/arch/
- Some more maintainer documentation from Jakub
... plus the usual assortment of updates, translations, and fixes"
* tag 'docs-6.6' of git://git.lwn.net/linux: (56 commits)
Docu: genericirq.rst: fix irq-example
input: docs: pxrc: remove reference to phoenix-sim
Documentation: serial-console: Fix literal block marker
docs/mm: remove references to hmm_mirror ops and clean typos
docs/zh_CN: correct regi_chg(),regi_add() to region_chg(),region_add()
Documentation: Fix typos
Documentation/ABI: Fix typos
scripts: kernel-doc: fix macro handling in enums
scripts: kernel-doc: parse DEFINE_DMA_UNMAP_[ADDR|LEN]
Documentation: riscv: Update boot image header since EFI stub is supported
Documentation: riscv: Add early boot document
Documentation: arm: Add bootargs to the table of added DT parameters
docs: kernel-parameters: Refer to the correct bitmap function
doc: update params of memhp_default_state=
docs: Add book to process/kernel-docs.rst
docs: sparse: fix invalid link addresses
docs: vfs: clean up after the iterate() removal
docs: Add a section on surveys to the researcher guidelines
docs: move mips under arch
docs: move loongarch under arch
...
Diffstat (limited to 'Documentation/mm/vmemmap_dedup.rst')
-rw-r--r-- | Documentation/mm/vmemmap_dedup.rst | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/mm/vmemmap_dedup.rst b/Documentation/mm/vmemmap_dedup.rst index c573e08b5043..59891f72420e 100644 --- a/Documentation/mm/vmemmap_dedup.rst +++ b/Documentation/mm/vmemmap_dedup.rst @@ -1,3 +1,4 @@ + .. SPDX-License-Identifier: GPL-2.0 ========================================= @@ -10,14 +11,14 @@ HugeTLB This section is to explain how HugeTLB Vmemmap Optimization (HVO) works. The ``struct page`` structures are used to describe a physical page frame. By -default, there is a one-to-one mapping from a page frame to it's corresponding +default, there is a one-to-one mapping from a page frame to its corresponding ``struct page``. 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 |