Ok, it's NOT working after all. Trying to install a HVM causes a
reboot... so I guess there is more work left there after all. Would have
been too easy I guess ;)
Am 15.05.2017 um 21:20 schrieb Bjoern:
Hi,
I just completed getting Qubes-OS working with Ryzen and IOMMU - at
least it looks like it to me and ran out of the box BIOS wise.
All that was required is a small patch in
xen/arch/x86/oprofile/nmi_int.c - Ryzen family 17h is the same as 15h.
Without that, "xl dmesg" under Ubuntu 17.04 (self compiled 4.8.3)
would show that family 17h isn't supported, with the above fix
everything shows up fine.
Xen 4.8.0 has the IOMMU patch
(https://patchwork.kernel.org/patch/9145119/) which was required for
Qubes (Xen 4.6.5), and then it just required the above change and it's
working apparently... at least Qubes reports working Xen - so looks good.
This is a fyi mail - I do not want to push this fix or something into
Xen as I also have no idea if I'm missing something else, but if
someone else wants to pick this up, by all means please do :)
Cheers,
Bjoern
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