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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-08 12:42:50 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-08 12:42:50 -0700 |
commit | 8c79f4cd441b27df6cadd11b70a50e06b3b3a2bf (patch) | |
tree | 0d7fca2a5fb43fa75b51c4cdaaee493e44d56d62 /Documentation/speculation.txt | |
parent | 2646719a48c21ba0cae82a3f57382a9573fd8400 (diff) | |
parent | d9defe448f4c7b88ca2ae636a321ef8970fa718d (diff) |
Merge tag 'docs-5.2' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"A reasonably busy cycle for docs, including:
- Lots of work on the Chinese and Italian translations
- Some license-rules clarifications from Christoph
- Various build-script fixes
- A new document on memory models
- RST conversion of the live-patching docs
- The usual collection of typo fixes and corrections"
* tag 'docs-5.2' of git://git.lwn.net/linux: (140 commits)
docs/livepatch: Unify style of livepatch documentation in the ReST format
docs: livepatch: convert docs to ReST and rename to *.rst
scripts/documentation-file-ref-check: detect broken :doc:`foo`
scripts/documentation-file-ref-check: don't parse Next/ dir
LICENSES: Rename other to deprecated
LICENSES: Clearly mark dual license only licenses
docs: Don't reference the ZLib license in license-rules.rst
docs/vm: Minor editorial changes in the THP and hugetlbfs
docs/vm: add documentation of memory models
doc:it_IT: translation alignment
doc: fix typo in PGP guide
dontdiff: update with Kconfig build artifacts
docs/zh_CN: fix typos in 1.Intro.rst file
docs/zh_CN: redirect CoC docs to Chinese version
doc: mm: migration doesn't use FOLL_SPLIT anymore
docs: doc-guide: remove the extension from .rst files
doc: kselftest: Fix KBUILD_OUTPUT usage instructions
docs: trace: fix some Sphinx warnings
docs: speculation.txt: mark example blocks as such
docs: ntb.txt: add blank lines to clean up some Sphinx warnings
...
Diffstat (limited to 'Documentation/speculation.txt')
-rw-r--r-- | Documentation/speculation.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/speculation.txt b/Documentation/speculation.txt index e9e6cbae2841..50d7ea857cff 100644 --- a/Documentation/speculation.txt +++ b/Documentation/speculation.txt @@ -17,7 +17,7 @@ observed to extract secret information. For example, in the presence of branch prediction, it is possible for bounds checks to be ignored by code which is speculatively executed. Consider the -following code: +following code:: int load_array(int *array, unsigned int index) { @@ -27,7 +27,7 @@ following code: return array[index]; } -Which, on arm64, may be compiled to an assembly sequence such as: +Which, on arm64, may be compiled to an assembly sequence such as:: CMP <index>, #MAX_ARRAY_ELEMS B.LT less @@ -44,7 +44,7 @@ microarchitectural state which can be subsequently measured. More complex sequences involving multiple dependent memory accesses may result in sensitive information being leaked. Consider the following -code, building on the prior example: +code, building on the prior example:: int load_dependent_arrays(int *arr1, int *arr2, int index) { @@ -77,7 +77,7 @@ A call to array_index_nospec(index, size) returns a sanitized index value that is bounded to [0, size) even under cpu speculation conditions. -This can be used to protect the earlier load_array() example: +This can be used to protect the earlier load_array() example:: int load_array(int *array, unsigned int index) { |