diff options
author | Waiman Long <longman@redhat.com> | 2020-05-06 19:22:17 +0300 |
---|---|---|
committer | Jonathan Corbet <corbet@lwn.net> | 2020-05-15 20:38:00 +0300 |
commit | b17b24fc3c10048502196fff56dcaf13938d1e75 (patch) | |
tree | 50043b3659fc3ffa65f5b4ce83822a4813b07c2a | |
parent | 77691ee92d4abdc926c60b6fa1a5cbbe935e1244 (diff) | |
download | linux-b17b24fc3c10048502196fff56dcaf13938d1e75.tar.xz |
doc: Fix some errors in ras.rst
Make some miscellaneous fixes to the first paragraph of "ECC memory":
- Change the incorrect "74 bits" to "72 bits".
- Change "mentioned on" to "mentioned in".
- Remove the extra "extra".
- Rephrase some sentences as suggested by Matthew Wilcox.
Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20200506162217.16633-1-longman@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
-rw-r--r-- | Documentation/admin-guide/ras.rst | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/admin-guide/ras.rst b/Documentation/admin-guide/ras.rst index 6cbaab975ee5..7b481b2a368e 100644 --- a/Documentation/admin-guide/ras.rst +++ b/Documentation/admin-guide/ras.rst @@ -156,11 +156,11 @@ the labels provided by the BIOS won't match the real ones. ECC memory ---------- -As mentioned on the previous section, ECC memory has extra bits to be -used for error correction. So, on 64 bit systems, a memory module -has 64 bits of *data width*, and 74 bits of *total width*. So, there are -8 bits extra bits to be used for the error detection and correction -mechanisms. Those extra bits are called *syndrome*\ [#f1]_\ [#f2]_. +As mentioned in the previous section, ECC memory has extra bits to be +used for error correction. In the above example, a memory module has +64 bits of *data width*, and 72 bits of *total width*. The extra 8 +bits which are used for the error detection and correction mechanisms +are referred to as the *syndrome*\ [#f1]_\ [#f2]_. So, when the cpu requests the memory controller to write a word with *data width*, the memory controller calculates the *syndrome* in real time, |