Hello! > I have prototyped Live migration with GICv3. This is interesting of course, i will need this for my project too and i was also going to take a look at this later. > For this I have made following changes > > 1) Save and Restore of GICv3 registers in QEMU. > - For GICv2, QEMU is saving/restoring GICD, GICC registers. For GICv3, > we have to save/restore GICD, GICR and ICC registers. > However ICC registers are system registers which cannot be > accessed @ EL0 level (SRE=1). So these ICC registers should be > accessed as mmio registers by QEMU, for this we have to add ioctl to > access ICC @ EL1 level similar to GICC registers of GICv2. Sorry, your description is a bit fuzzy. What ioctl's did you have to add and why? The kernel already has KVM_GET_ONE_REG and KVM_SET_ONE_REG ioctl's. And they can be used to access anything inside the VM, including system registers. I believe you would need only to implement handlers for GICv3 registers. > Please provide your initial feedback. Would be nice to take a look at patches. > I am attending KVM-forum next week @ Seattle. We can discuss there as well. I would love to go there, and my company wanted to send me there. But it appears to be extremely difficult for a tech specialist from Russia to get a US visa. They are still considering me and the time is running out, so i'm unlikely to attend, unfortunately. Kind regards, Pavel Fedin Expert Engineer Samsung Electronics Research center Russia _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
