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由 Nelson Elhage 提交于
Currently, setting a large (i.e. negative) base address for %cs does not work on a 64-bit host. The "JOS" teaching operating system, used by MIT and other universities, relies on such segments while bootstrapping its way to full virtual memory management. Signed-off-by: NNelson Elhage <nelhage@ksplice.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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