On Wed, 13 Nov 2002, Nakajima, Jun wrote:
>
> Are we disabling vm86 code to access to PIT or PIC? I saw some video ROM
> code (either BIOS call or far call) did access PIT, confusing the OS.
Well, the kernel itself doesn't actually disable/enable anything, it
leaves that decision to the caller.
XFree86 obviously does have IO rights, and I suspect it may allow the
video BIOS to do just about anything, simply because it doesn't have much
choise (the video bios clearly needs a lot of IO privileges too). So yes,
that could easily confuse the OS if it happens, but it should be
independent of IO-APIC vs not.
Linus
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This archive was generated by hypermail 2b29 : Fri Nov 15 2002 - 22:00:31 EST