+Robert On 21/10/16 08:01, Auger Eric wrote: > Hi, > > I am not able to boot 4.9-rc1 as a guest on Cavium ThunderX (dt and acpi > mode). Bisecting the guest shows that the problem shows up at > > 91ef84428a86b75a52e15c6fe4f56b446ba75f93 > irqchip/gic-v3: Reset BPR during initialization > > If I remove the write to the ICC_BPR1_EL1 register on guest, the VM boots. That's very odd. A ICC_BPR1_EL1 access when HCR_EL2.IMO is set only affects ICH_VMCR_EL2.VBPR1. It is not trapped, since we don't set ICH_HCR_EL2.TALL1. It is a very boring sysreg! So from a pure architectural point of view, I don't see how this can fail. I've just run the same configuration on my Freescale board (GICv3 as well), and can't see any issue at all. > Investigating KVM code ... What is the failure syndrome? Do you see it crashing? Locking up? What is the PC at that stage? Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
