> To allocate more memory, use vmalloc(), which allocates and maps physically
> disjoint pages into a virtually-contiguous region. Be careful when doing DMA
> to a vmalloc() area, since it is not physically contiguous and exists only
> in the kernel's virtual memory map... Also I believe vmalloc()ed memory is
> only accessible from (the context of) the process in which it was allocated
> (?).
vmalloc memory is accessible everywhere. You can't allocate it during
interrupts or tasklets, and you will get deadlocks if you allocate it in the
write out path of a file system/disk driver.
Alan
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This archive was generated by hypermail 2b29 : Sat Mar 23 2002 - 22:00:21 EST