Alex, look at the driver and see where it should show up. As I wrote, it depends on your user space and kernel config if udev or devtmpfs populates /dev -Christoffer 2012/3/21 Alexander Golec <thejfasi at gmail.com>: > I failed to mention that I followed this advice, and I'm just not sure what > to look for in /dev. ls /dev/block shows only: > > drwxr-xr-x 2 root root ? 60 Feb 17 22:04 . > drwxr-xr-x 9 root root 3140 Feb 17 22:11 .. > lrwxrwxrwx 1 root root ? 10 Feb 17 22:04 179:0 -> ../mmcblk0 > > so I'm inclined to think that my next step is to ensure that virtio is even > happening. > > Alex > > > On Mar 21, 2012, at 1:21 PM, Christoffer Dall wrote: > > Alex, > > as I told you, why not try to still boot the way you used to > (mmc/nfs/...) and then simply mount the virtio device from user space? > > Then you can just put a printk in whatever code you are not sure if > executiong and verify using dmesg. (come to think of it you can do > that anyway just looking at the guest console output). > > Once you have virtio working, so you can mount that device and > interact with whatever file system is on there, you can fix booting on > that. The virtio device(s) is going to be either populated by the > devtmps from the kernel or populated by udev. > > You can set rootfs=/dev/MYVIRTIODEV on the kernel boot command line to > something that the kernel can recognize to your virtio device (I > forget how this is mapped up exactly, but take a look at some other > driver/configuration and see how it's mapped, or simply look at the > kernel command line parsing). > > But again, I suggest you split up mounting and acutally booting. > > -Christoffer > > On Wed, Mar 21, 2012 at 1:09 PM, Alexander Golec <thejfasi at gmail.com> wrote: > > I've successfully managed to boot qemu with the virtio-mmio changes, but I'm > not sure what to tell it to use as a root device. The boot just stops at the > 'Wait for root device?' stage, and I'm not sure what to give it as a command > line param. > > > On a possibly unrelated note, I'm not sure how to check that the virtio-mmio > init code is even running? > > > Alex > > _______________________________________________ > > Android-virt mailing list > > Android-virt at lists.cs.columbia.edu > > https://lists.cs.columbia.edu/cucslists/listinfo/android-virt > > > > _______________________________________________ > Android-virt mailing list > Android-virt at lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/android-virt >
