On most of the x86 linux boxes, I have seen it to be 2 or other
variants where boot loader informs about memory map.

-Rajat

On Thu, Feb 3, 2011 at 10:18 AM, Arun S [off-list ref] wrote:

Hi,
?How does the kernel detects the amount of available System RAM in the
system under x86 architecture?.
Under 2.6.x kernels,

1. Does it use BIOS interrupt 15 for determining the RAM
?OR
2. Does the boot loader fills the?e820_map as explained
inDocumentation/x86/boot.txt & ??Documentation/x86/zero-page.txt??and the
kernel uses in information
OR
3. Is there any other mechanism (if so, in which file under kernel tree I
can find this detection code)


Thanks,
Arun
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies