Hi H.Peter,
On 04/11/2013 10:48 AM, H. Peter Anvin wrote:
On 04/10/2013 07:40 PM, Simon Jeons wrote:
Hi H.Peter,
On 04/04/2013 09:13 AM, H. Peter Anvin wrote:
On 04/03/2013 06:11 PM, Simon Jeons wrote:
Why we consider boot_cpu_data.x86_phys_bits instead of e820 map here?
Because x86_phys_bits is what controls how much address space the
processor has. e820 tells us how much *RAM* the machine has, or
specifically, how much RAM the machine had on boot.
I have 8GB memory in my machine, but when I accumulated every e820
ranges which dump in dmesg, there are 25MB memory less then 8GB(1024*8)
memory, why 25MB miss?
For whatever reason your BIOS is stealing some memory, possibly for video.
Thanks for your quick response. ;-)
My machine is new which have i7 cpu. How much memory video need? 8MB?
Why I miss 25MB?
-hpa
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