Jenifer De Jager
Reputation: 33
#GP on some ISRs, APIC and PIT not sending IRQs
I've been working on code to test the speed of the APIC using the PIT. There are several problems I can't figure out. First, when testing my ISRs for the two timers, I get general protection faults on the iretq instructions. Second, neither timer actually fires any interrupts. Any help on this would be much appreciated.
Upvotes: 0
Views: 93
Answers (1)
Jenifer De Jager
Reputation: 33
The general protection faults were caused by having an invalid CS register due to not reloading the CS register after loading the GDT. It's not in the code I linked to at all.
Upvotes: 1
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