Ugh. Didn't realize that. On September 29, 2015 11:22:04 AM PDT, Andy Lutomirski <[email protected]> wrote: >On Tue, Sep 29, 2015 at 11:18 AM, H. Peter Anvin <[email protected]> wrote: >> SGDT would be easy to use, and it is logical that it is faster since >it reads an internal register. SIDT does too but unlike the GDT has a >secondary limit (it can never be larger than 4096 bytes) and so all >limits in the range 4095-65535 are exactly equivalent. >> > >Using the IDT limit would have been a great ideal if Intel hadn't >decided to clobber it on every VM exit. > >--Andy
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