General Segment Descriptor Format
Figure 7-9. General Format of a Segment Descriptor
It should be noted, however, that there are a number of variations on the segment descriptor and they are covered in the chapters that follow.
The granularity bit tells the processor how to interpret the segment descriptor size field (also referred to as the limit):
G = 0 indicates that the size field specifies the segment size in bytes.
G = 1 indicates that the size is specified in pages ...