Linked by Thom Holwerda on Fri 10th Aug 2007 20:46 UTC, submitted by SReilly
Privacy, Security, Encryption An unpatched flaw in an ATI driver was at the center of the mysterious Purple Pill proof-of-concept tool that exposed a way to maliciously tamper with the Vista kernel. Purple Pill, a utility released by Alex Ionescu [yes, that Ionescu] and yanked an hour later after the kernel developer realized that the ATI driver flaw was not yet patched, provided an easy way to load unsigned drivers onto Vista - effectively defeating the new anti-rootkit/anti-DRM mechanism built into Microsoft's newest operating system.
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RE[4]: Microkernels
by corentin on Sat 11th Aug 2007 20:03 UTC in reply to "RE[3]: Microkernels"
corentin
Member since:
2005-08-08

"Besides, it's not like we don't have massively powerful systems that can mask the latencies by sheer power alone."

Take this with a grain of salt, because I'm far from being an expert, but I think that an important part of the performance impact is due to architecture aspects; today's chips (well, x86 stuff at least) aren't really designed to run micro-kernels (context switches are expensive, no real support for messaging, etc.)

BTW, keep in mind context switches are nothing but waste of energy. Why not minimize them in the first place?

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