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SubjectRe: [PATCH -tip] kmemcheck: fix crash in PnP BIOS calls
> catch those reads/writes just fine. I'm not sure if the BIOS code can
> change segments (it would need to switch LDT/GDTs, I think), and even

It can do so if it wants as far as I can tell

> if it did, I find it unlikely that it would directly access kernel
> memory using these new segment registers. Do you happen to know of any
> such cases?

No. The code either seems to be very simple or just be an SMM trap in the
BIOSes I've seen

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