Good Afternoon, I've been trying to make Sasha Levin's "kvmtool: add support for modern virtio-pci" patch work on master and it doesn't seem to behave. The patch itself applies cleanly and the kernel does boot, but as soon as the kernel tries to read from the virtio-blk device, the kvmtool side virtio-blk device never responds to the request. From generously sprinkled prints, I know that that the virtio-blk device is being notified of work on the vring, but when it actually checks for any (using virt_queue__available) it decides there is none available. In trying to discover why the virtio queue is empty, I've come up on a wall. Seeing as I'm working with an apparently unmerged patch, perhaps this is a known issue. Maybe even somebody knows what I'm doing wrong and how to fix it. I've also been curious why this patch is still unmerged after a year (to this exact day day). A little background: I'm trying to get modern virtio-pci working because I want to add basic virtio-gpu support to kvmtool, and the linux guest kernel module for that requires modern virtio-pci. For reference, I'm starting kvmtool with $ lkvm run --console virtio -m 4096 -c 1 --disk /data/scratch/archkvm.squashfs --kernel arch/x86/boot/bzImage" where archkvm.squashfs is a custom userspace bootstrapped from arch linux (although I doubt that matters as the kernel doesn't get to mounting the rootfs). This command works perfectly fine with modern virtio-pci disabled. My kernel config is pasted here: http://hastebin.com/tufelatuji.txt . Thanks, Zach Reizner -- 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
