Re: Wiretapping Linux?

From: Avi Kivity
Date: Wed May 17 2006 - 08:16:18 EST

Joerg Pommnitz wrote:
Additionally its listening on the system bus. Question: Can it tap into data addressed to another peripheral (say the hd controller)? If so, then only the system RAM is outside its scope.

A pci device can read system RAM and other memory-mapped PCI devices (such as display framebuffers) using DMA. In addition, a pci (but not pci-express) device can snoop on pci bus traffic to other devices. Typically, however, hard drive controllers will be integrated into the chipset so the data is not on the bus.

error compiling committee.c: too many arguments to function

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