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    SubjectRe: [PATCH 1/2 v2] x86: add max_addr boot option
    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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