Messages in this thread Patch in this message | | | Date | Wed, 2 Jul 1997 23:51:53 -0700 | From | "Leonard N. Zubkoff" <> | Subject | Re: > 1GB RAM on x86 ? |
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Date: Wed, 2 Jul 1997 16:58:40 -0700 From: "Larry M. Augustin" <lma@varesearch.com>
We're testing some x86 systems with more than 1GB of RAM. Linux on x86 seems to be limited to 1GB of physical memory. This suprised me a bit since I thought 386 PTE's had 20 bits for physical page addresses (4GB physical). Is there a 1GB physical limit, what's the reason for the limit, and what would need to change to increase this to 4GB? (i.e. Where did those other 2 bits go?)
I also seem to be seeing a limit on swap space of 1GB. What about increasing that too?
This one is easy. I've been running with 2GB swap possible for quite a while.
Leonard
--- linux/include/linux/swap.h- Mon Jun 3 05:38:37 1996 +++ linux/include/linux/swap.h Sun Nov 3 11:04:37 1996 @@ -5,7 +5,7 @@ #define SWAP_FLAG_PRIO_MASK 0x7fff #define SWAP_FLAG_PRIO_SHIFT 0 -#define MAX_SWAPFILES 8 +#define MAX_SWAPFILES 16 #ifdef __KERNEL__
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