Messages in this thread | | | Date | Thu, 15 Nov 2018 21:32:01 +0200 | From | Mika Westerberg <> | Subject | Re: [PATCH 1/4] PCI / ACPI: Identify external PCI devices |
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On Thu, Nov 15, 2018 at 08:27:41PM +0100, Lukas Wunner wrote: > On Thu, Nov 15, 2018 at 09:10:26PM +0200, Mika Westerberg wrote: > > I was thinking we could cover all these with is_external filling them > > based on the _DSD or some other means in the kernel. > > > > We would then deal all such devices as "untrusted" by default. > > Tinfoil hat on, even internal devices could be malicious. > What's the downside of enabling the feature for everything?
Mostly performance, I think. That's the main reason we put all non external devices to passthrough IOMMU mode.
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