Am Tue, 5 Feb 2019 19:25:28 -0800 schrieb <[email protected]>:
> On Friday, February 1, 2019 at 12:32:40 AM UTC-7, J. Kiszka wrote: > > You likely want > > https://github.com/siemens/linux/commits/jailhouse-enabling/4.14 or > > the 4.19-variant that is jailhouse-prepared. That's what > > jailhouse-images is building for you. If you just rebuild the > > kernel that the original image was using, only adding UIO, you > > should be fine with keeping the jailhouse kernel package untouched. > > But the cleanest way is reproducing the image via jailhouse-images > > after adjusting the parameter you want to change (CONFIG_UIO, > > ROOTFS_EXTRA etc.). > > > > Jan > > > > -- > > Siemens AG, Corporate Technology, CT RDA IOT SES-DE > > Corporate Competence Center Embedded Linux > > That worked! I was able to figure out the correct kernel to build by > looking at jailhouse-images/recipes-kernel/linux/linux-jailhouse.bb > from when I last generated my image at 4.14.73 > (https://github.com/siemens/linux/archive/1dd68658b3a8308a160b0786fc4e1e04d8ff5216.tar.gz). > With that, I supplied QEMU with the new UIO-enabled kernel image and > built jailhouse and uio_ivshmem.ko and ran the ivshmem jailhouse demo. > > However, I'm still not sure how to read in the data from the > ivshmem-demo. Once I insmod uio_ivshmem.ko, shouldn't there be a > device called /dev/uio0 that I can read "Hello From IVSHMEM" from and > write back to? And shouldn't there be an entry in /sys/class/uio/? I > don't see either of these, and I'm not quite sure how to debug this > yet. Yes you should get that. If you do not, my first guess would be that you are not building the jailhouse branch of the guest-code repo. The jailhouse version of the PCI interface is slightly different, so the probing between the two is not compatible. Henning > The only documentation I can find on this is > https://www.kernel.org/doc/html/v4.18/driver-api/uio-howto.html. > > Any help is appreciated. Sorry to be a bother. Thanks! > -Michael > -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
