From: Wen Congyang <we...@cn.fujitsu.com>

Current mem= implementation seems buggy because specification and
implementation doesn't match. 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 <we...@cn.fujitsu.com>
Sort-of-tentatively-acked-by: Rob Landley <r...@landley.net>
---
 Documentation/kernel-parameters.txt |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/kernel-parameters.txt 
b/Documentation/kernel-parameters.txt
index 9776f06..85b911a 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1481,9 +1481,10 @@ bytes respectively. Such letter suffixes can also be 
entirely omitted.
        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
                        to see the whole system memory or for test.
-                       [X86-32] Use together with memmap= to avoid physical
-                       address space collisions. Without memmap= PCI devices
-                       could be placed at addresses belonging to unused RAM.
+                       [X86-32] Work as limiting max address. Use together
+                       with memmap= to avoid physical address space collisions.
+                       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
                        memory.
-- 
1.7.1

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