Hi Acelan,
On Thu, Apr 23, 2015 at 10:15:33AM +0800, AceLan Kao wrote:
> We can confirm that the issue comes from the resources conflict,
> adding this boot option can solve the issue.
> ivrs_ioapic[5]=00:00.1
> We've tried to negotiate with the OEM BIOS team, but they refused to
> modify the BIOS code, since there is no issue on MS Windows and it'll
> require to re-start a full test if the BIOS code is changed, so they
> don't want to do that.
>
> I'm wondering if we can add a quirk to list those machine and assign
> them the correct ivrs_ioapic value in amd_iommu driver?
It is probably hard to match a specific machine which has the bug. What
do you think would be a good indicator to check whether this BIOS bug is
present?
Joerg
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