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    SubjectRe: [PATCH 0/6] freepgt: free_pgtables shakeup
    On Wed, Mar 30, 2005 at 06:00:54PM +0100, Hugh Dickins wrote:
    > And, whether FIRST_USER_ADDRESS is 0x8000 or 2MB,
    > shouldn't your arch_get_unmapped_area be enforcing it?

    Why should it? arch_get_unmapped_area allocates address space dynamically
    when NULL is passed, and always starts from TASK_UNMAPPED_BASE. This
    will be greater than 32K.

    The protection against mapping things below 32K comes from the syscall
    wrappers on mmap() and mremap().

    --
    Russell King
    Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
    maintainer of: 2.6 Serial core
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