about default_ldt

[orca chen <orca.chen@xxxxxxxxx>]

hi all,

I have a question about default_ldt:

struct desc_struct default_ldt[] = { { 0, 0 }, { 0, 0 }, { 0, 0 },
                { 0, 0 }, { 0, 0 } };

why does default_ldt have five elements?
why this size?  5*sizeof(desc_struct)

thx

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