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    SubjectRe: [2.6 patch] i386: always use 4k stacks

    > One comment on x86-64 vs. x86: There are restrictions on where in
    > memory your process stacks can be located on a 32-bit
    > platform. They
    > need to reside in lowmem, which means under certain circumstances
    > your lowmem can get too fragmented to create new processes even
    > though you still have a lot of available RAM.

    But where does these restrictions come from ? As far as I know, stack
    is referenced to by SS:ESP registers, and nothing in the x86 architecture
    prevents them from pointing outside of lowmem... Isn't this simply a
    Linux design restriction ?


    Paul Rolland, rol(at)
    ex-AS2917 Network administrator and Peering Coordinator


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