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SubjectRe: [PATCH] iommu/amd: Override wrong IVRS IOAPIC on Raven Ridge systems
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at 23:39, Joerg Roedel <joro@8bytes.org> wrote:

> On Thu, Aug 08, 2019 at 06:17:07PM +0800, Kai-Heng Feng wrote:
>> Raven Ridge systems may have malfunction touchpad or hang at boot if
>> incorrect IVRS IOAPIC is provided by BIOS.
>>
>> Users already found correct "ivrs_ioapic=" values, let's put them inside
>> kernel to workaround buggy BIOS.
>
> Will that still work when a fixed BIOS for these laptops is released?

Do you mean that we should stop applying these quirks once a BIOS fix is
confirmed?

We can modify the quirk to compare BIOS version, if there’s an unlikely
BIOS update really fixes the issue.
Before that happens, I think it’s OK to let the quirks stay this way.

Kai-Heng

>
>
> Joerg


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