Jeff Garzik wrote:
On Tue, Nov 22, 2005 at 05:46:41PM +0200, Avi Kivity wrote:
4) Write a translation layer (for xorg or the kernel) that can load
Windows drivers. Use binary translation for non-x86. Hope the APIs are
not patented.
Give up all hope of ever diagnosing or fixing a crash.
Welcome to Windows instability, circa 1995.
You exaggerate. Windows drivers work well enough in Windows (or so I
presume). One just has to implement the environment these drivers
expect, very carefully.
For the untrusting, options do remain:
- run the driver in userspace (if it's a xorg driver, in a separate
process) so that all outputs can be validated
- use binary translation even on x86 and validate all memory and I/O
accesses (like valgrind, but hopefully faster)
It's still possible for the driver to dma stuff where it shouldn't.
Maybe IOMMU games (where available) can help. But I seriously doubt it
will be that bad.
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