On 09/03/20 4:52 pm, 'Nikhil Devshatwar' via Jailhouse wrote:
On 09/03/20 4:39 pm, Jan Kiszka wrote:
On 09.03.20 11:12, Nikhil Devshatwar wrote:
Hi Henning,
As part of the TI SDK, we were integrating the ivhsmem_uio as
external module
from https://github.com/henning-schild-work/ivshmem-guest-code
Since the ivshmem changes in the Jailhouse, that driver no more
works (because of the vendor ID change)
Do you plan to host the updated version of the driver in this repo?
I know that the driver is already part of the siemens repo but it is
much simpler to integrate an external module in yocto.
Actually, that new driver is a complete rewrite, not just an ID
update. It allows to securely pass access to unprivileged users and
provides all features of the new ivshmem interface.
With this driver, I can get the uio device registered but when I run the
uio_send and uio_read apps,
I get mmap failure. Looking into more details, it seems that the new
driver exposes specific input and output regions to UIO
Am I supposed to use a different app for testing the ivshmem?
Regards,
Nikhil D
Got it
For that, it requires to patch the kernel with [1]. But given that
you have to patch your kernel anyway for other Jailhouse details and
given that this is trivial in yocto, I don't get the point of having
an external module package being easier.
Sure, I wasn't aware of this dependency.
Regards,
Nikhil D
Jan
[1]
http://git.kiszka.org/?p=linux.git;a=commitdiff;h=651db1cf858dd7afef7ef98c7db86223c1f73a59;hp=2c523b344dfa65a3738e7039832044aa133c75fb
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