[cap-talk] "Security Issues related to Pentium System Management Mode"
john.carlson3 at sbcglobal.net
Tue May 9 23:13:20 EDT 2006
I'm showing my age. I didn't even know those were system calls.
My training was under BSD (pre free, net and open), then SunOS.
By that time I had moved out of C and into GUIs and string processing.
I'd like to know the X11 internals, but I'd rather spend my time writing
> I'm not completely sure on this, but I seem to recall that X.org and
> XFree86 drivers the code must run as root to gain access to the
> and iopl() system calls.
> If the were confined to using framebuffer interfaces (using mmap on
> device nodes under /dev/) then these X servers could/can run as
> (given appropriate permissions on the appropriate /dev/* nodes).
> I suspect that XDarwin only supports framebuffer interfaces.
> Jim Dennis
> cap-talk mailing list
> cap-talk at mail.eros-os.org
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