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appusajeev
 Post subject: CPL and RPL
PostPosted: Thu May 24, 2012 11:33 pm 
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If CPL =3 , can we set RPL = 0 to access a segment?
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iansjack
 Post subject: Re: CPL and RPL
PostPosted: Fri May 25, 2012 2:02 am 
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I presume that you are referring to a data segment? From the Intel manual:

"That is, if the RPL of a segment selector is numerically greater than the CPL, the RPL overrides the CPL, and vice versa."

So if the DPL is less than 3 then an RPL of 0 makes no difference as it doesn't override the CPL.
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