On Thu, May 01, 2025 at 11:30:18AM -0700, Sean Christopherson wrote: > Uh, aren't you making this way more complex than it needs to be? Possibly :-) > IIUC, KVM never > uses the FRED hardware entry points, i.e. the FRED entry tables don't need to be > in place because they'll never be used. The only bits of code KVM needs is the > __fred_entry_from_kvm() glue. But __fred_entry_from_kvm() calls into fred_extint(), which then directly uses the fred sysvec_table[] for dispatch. How would we not have to set up that table? > Lightly tested, but this combo works for IRQs and NMIs on non-FRED hardware. So the FRED NMI code is significantly different from the IDT NMI code and I really didn't want to go mixing those. If we get a nested NMI I don't think it'll behave well.
