Hi there!

Would it be possible to increase the number of entries in the GDT? If you'd prefer to keep the default at 8, perhaps there could be a feature to increase it (to 16, perhaps)? To be able to use syscall/sysret, I reckon you need at least 7 entries, not including the null first entry. 2 for kernel code/data, 1 for the TSS, 2 for 32-bit user code/data and 2 for 64-bit code/data. If you also want an entry to allow CPU-local data with GS, then the current type panics. It's entirely possible I'm wrong, which would be great.

Thanks for all your hard work.