tree 992c10c0a2512dc7d63647312fcd2790af105e8e
parent 041f5f8da1df203b8f208cd1afa4f4c3bd843f30
author [EMAIL PROTECTED] <[EMAIL PROTECTED]> Tue Apr 12 08:24:33 2005
committer Linus Torvalds <[EMAIL PROTECTED]> Tue Apr 12 08:24:33 2005
[PATCH] arm: add comment about max_low_pfn/max_pfn
)
From: Russell King <[EMAIL PROTECTED]>
Oddly, max_low_pfn/max_pfn end up being the number of pages in the system,
rather than the maximum PFN on ARM. This doesn't seem to cause any problems,
so just add a note about it.
Signed-off-by: Russell King <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
init.c | 3 +++
1 files changed, 3 insertions(+)
Index: arch/arm/mm/init.c
===================================================================
--- b5eb725f61202e9a238c538972f1d89387b40d22/arch/arm/mm/init.c (mode:100644
sha1:e89cebad6b0c383db727de811ed61acf1187b44d)
+++ 992c10c0a2512dc7d63647312fcd2790af105e8e/arch/arm/mm/init.c (mode:100644
sha1:a49a8ae4d91bbfa0db67c7f049a31e1c147e891a)
@@ -223,6 +223,9 @@
* This doesn't seem to be used by the Linux memory
* manager any more. If we can get rid of it, we
* also get rid of some of the stuff above as well.
+ *
+ * Note: max_low_pfn and max_pfn reflect the number
+ * of _pages_ in the system, not the maximum PFN.
*/
max_low_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
max_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
-
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