On Thursday 28 October 2004 18:46, Lennart Sorensen wrote: > On Thu, Oct 28, 2004 at 12:53:20PM -0400, Levi Bard wrote: > > Highmem (>4GB) may not be enabled in that kernel? Can you search for > > it in the config? (/proc/kconfig ?) > > HIGHMEM on a 64bit system? I know the amd64 is x86 based, but still, > does it need that?
Amd64 can access all memory directly, so doesn't have or need highmem[1]. The highmem/lowmem distinction only applies to 32-bit kernels. Paul [1] em64t cpus don't have an IOMMU, so have to bounce all IO through buffers in th first 4G of memory, but that's something different.
