Almudena Garcia, le jeu. 30 juil. 2020 23:30:55 +0200, a ecrit: > > As Richard said, we just want to have different GDTs on the different > > processors, so that we wan use the fs segment register to implement TLS > > in the kernel and have per-cpu data cost essentially the same as global > > data. > > Yes, but how can I store the relation APIC ID - Kernel ID in the GDT?
You don't. Read about GDT and segments register, and segmentation in general. In the GDT you'd only store a pointer to the per-cpu data, and processors will load it. > Is there any way to avoid using an array for that? Yes, you'd just store the ID in the per-cpu data. Samuel
