On Tue, Dec 15, 2020 at 12:10:42PM +0000, e...@disroot.org wrote: > Hello, I hope that this is the right mailing list to send this query to. > > First some background. It is possible to run 9front on OpenBSD using > vmm, this is well documented and I have gotten it working before on a > ThinkPad X220. > Where I run into trouble is trying to install it on a T14 AMD, which > uses an AMD processor. Essentially when you begin to run the live cd, > the 9front kernel loads, and then immediately vmd restarts the virtual > machine, presumably because it crashed somewhere in the boot process. > > Now to the question, how would I go about debugging this? I know that > this install works on Intel, this is on OpenBSD -current. > > The 9front IRC told me that it was a vmm issue, as there are different > implementations on AMD and Intel, is this true? > If so, what debugging should I run to help the OpenBSD developers fix > this issue? > > If it's a 9front issue, is there any way for me to be able to take some > kind of memory dump so that the 9front developers can handle this? > > Hopefully this wasn't too off topic, I have read the relevant manual > pages for vmm, but I couldn't work out what debugger to use, I'm not > here to get others to debug it for me, only to work out where to start. > > Thank you >
If you know how, build a kernel with VMM_DEBUG enabled and send me the output from dmesg (it will be a lot) when the VM crashes. VMM_DEBUG is settable at the top of vmm.c, fwiw. -ml
