[patch] bug in init.c

Wichert, Gerhard (Gerhard.Wichert@pdb.siemens.de)
Tue, 14 Sep 1999 17:00:58 +0200

There is a bug in init.c which causes memory below 1MB remain PG_reserved.
So, there won't be memory of type PG_DMA available if you have more than
about 820 MB system memory (memory up to the 16MB limit will be used by
kernel structures, i.e. mem_map_t).

--- 2.3.18/arch/i386/mm/init.c Tue Sep 7 19:38:21 1999
+++ 2.3.18-fix/arch/i386/mm/init.c Tue Sep 14 16:46:44 1999
@@ -450,7 +450,7 @@
continue;
if ( addr > end_mem )
continue;
- if ( addr >= HIGH_MEMORY && addr <= start_mem )
+ if ( addr >= (HIGH_MEMORY + PAGE_OFFSET) && addr <=
start_mem )
continue;

avail++;

Gerhard

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