On 20.08.2017 08:17, Neil Bothwick wrote: > I'd try again with a clean kernel tree but using make oldconfig. It's > possible the automagic stuff answered n somewhere where you need a y.
As https://wiki.gentoo.org/wiki/Kernel/Upgrade/en#make_silentoldconfig describes, "make silentoldconfig" (which I used) asks for a decision for all newly introduced kernel options. Most default to "no" anyway, but I have painstakingly read each of the new descriptions to figure out if I might need the options. I've done it several times, and I still cannot figure out if I missed anything. Here is a subset of the options I have configured, perhaps you can spot if something is amiss? Of course, grep VIRT is not exactly the most precise approach... ### Server 1 (high volume traffic) $ grep VIRT .config | sort CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y CONFIG_BLK_MQ_VIRTIO=y # CONFIG_DEBUG_VIRTUAL is not set # CONFIG_DMA_VIRT_OPS is not set CONFIG_DMA_VIRTUAL_CHANNELS=y # CONFIG_DRM_VIRTIO_GPU is not set # CONFIG_FB_VIRTUAL is not set CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HW_RANDOM_VIRTIO=y CONFIG_PARAVIRT_CLOCK=y # CONFIG_PARAVIRT_DEBUG is not set CONFIG_PARAVIRT_SPINLOCKS=y # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT=y CONFIG_SCSI_VIRTIO=y # CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set # CONFIG_VIRT_DRIVERS is not set CONFIG_VIRTIO_BALLOON=m # CONFIG_VIRTIO_BLK_SCSI is not set CONFIG_VIRTIO_BLK=y CONFIG_VIRTIO_CONSOLE=y # CONFIG_VIRTIO_INPUT is not set # CONFIG_VIRTIO_MMIO is not set CONFIG_VIRTIO_NET=y CONFIG_VIRTIO_PCI_LEGACY=y CONFIG_VIRTIO_PCI=y CONFIG_VIRTIO=y CONFIG_VIRT_TO_BUS=y # CONFIG_VIRTUALIZATION is not set I have since updated a second virtual Gentoo server to Kernel 4.12. This server sees a lot less network traffic, but after a couple of hours it runs into the same timeouts when attempting to contact resolvers. Kernel settings include: ### Server 2 (low volume traffic) $ grep VIRT .config | sort CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y CONFIG_BLK_MQ_VIRTIO=y # CONFIG_DEBUG_VIRTUAL is not set # CONFIG_DMA_VIRT_OPS is not set CONFIG_DMA_VIRTUAL_CHANNELS=y # CONFIG_DRM_VIRTIO_GPU is not set # CONFIG_FB_VIRTUAL is not set CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HW_RANDOM_VIRTIO=y CONFIG_PARAVIRT_CLOCK=y # CONFIG_PARAVIRT_DEBUG is not set CONFIG_PARAVIRT_SPINLOCKS=y # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_PARAVIRT=y CONFIG_SCSI_VIRTIO=y # CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set # CONFIG_VIRT_DRIVERS is not set CONFIG_VIRTIO_BALLOON=m # CONFIG_VIRTIO_BLK_SCSI is not set CONFIG_VIRTIO_BLK=y CONFIG_VIRTIO_CONSOLE=y # CONFIG_VIRTIO_INPUT is not set # CONFIG_VIRTIO_MMIO is not set CONFIG_VIRTIO_NET=y CONFIG_VIRTIO_PCI_LEGACY=y CONFIG_VIRTIO_PCI=y CONFIG_VIRTIO=y CONFIG_VIRT_TO_BUS=y CONFIG_VIRTUALIZATION=y As you can see, I used CONFIG_VIRTUALIZATION=y in this case, even though I believe this only affects running as a VM host. I carried this option over from the previous 4.9 kernel. -Ralph
