Hello! > Can't you use the ELRSR bitmap instead? The idea of lr_used sounds like > a moot optimization to me.
This perfectly works on 4.2, but will break HW interrupt forwarding on 4.3. If you look at 4.3 __kvm_vgic_sync_hwstate(), you'll notice that for HW interrupts lr_used and elrsr_ptr will diverge at this point, and this function actually brings them into sync. And it relies on lr_used for the loop to operate correctly (no idea why we use "for" loop here with extra check instead of "for_each_set_bit(lr, vgic_cpu->lr_used, vgic->nr_lr)", looks stupid to me). Kind regards, Pavel Fedin Expert Engineer Samsung Electronics Research center Russia _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
