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Documentation/kernel-parameters.txt: update mem= option's spec according to its implementation

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Current mem= implementation seems buggy because the specification and
implementation don't match.  The current mem= has been working for many
years and it's not buggy - it works as expected.  So we should update the
specification.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Cc: Rob Landley <rob@landley.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wen Congyang 2012-12-17 15:59:29 -08:00 committed by Linus Torvalds
parent 3515b737d3
commit fbb97d8780
1 changed files with 4 additions and 3 deletions
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7
Documentation/kernel-parameters.txt
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@ -1503,9 +1503,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
mem=nn[KMG] [KNL,BOOT] Force usage of a specific amount of memory mem=nn[KMG] [KNL,BOOT] Force usage of a specific amount of memory
Amount of memory to be used when the kernel is not able Amount of memory to be used when the kernel is not able
to see the whole system memory or for test. to see the whole system memory or for test.
[X86-32] Use together with memmap= to avoid physical [X86] Work as limiting max address. Use together
address space collisions. Without memmap= PCI devices with memmap= to avoid physical address space collisions.
could be placed at addresses belonging to unused RAM. Without memmap= PCI devices could be placed at addresses
belonging to unused RAM.
mem=nopentium [BUGS=X86-32] Disable usage of 4MB pages for kernel mem=nopentium [BUGS=X86-32] Disable usage of 4MB pages for kernel
memory. memory.