Messages in this thread | | | Date | Mon, 11 Jun 2012 14:15:00 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/2 v2] x86: add max_addr boot option |
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On 06/11/2012 01:44 AM, Wen Congyang wrote: > Currently, the boot option max_addr is only supported on ia64 platform. > We also need it on x86 platform. > For example: > There are two nodes: > NODE#0 address range 0x00000000 00000000 - 0x00010000 00000000 > NODE#1 address range 0x00010000 00000000 - 0x00020000 00000000 > If we only want to use node0, we can specify the max_addr. The boot > option "mem=" can do the same thing now. But the boot option "mem=" > means the total memory used by the system. If we tell the user > that the boot option "mem=" can do this, it will confuse the user. > So we need an new boot option "max_addr" on x86 platform. >
I fail to see what this does that cannot be done with the since-long-existing memmap= option. Could you address why memmap= doesn't match your needs?
-hpa
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