Re: vesafb on archs !ia32 [Re: Calling VESA BIOS routines from kernel?]

Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 13 Dec 1999 00:35:12 +0000 (GMT)

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> The "entire x86 vm inside the kernel" is the approach FreeBSD took. It
> seems to work well. This has the nice side benefit that all the VESA
> functions are available in protected mode, not just real mode.

I'd definitely prfer the vm to be running in user mode via callbacks. That
keeps the 8086 vm handling a lot cleaner, and also means it doesnt blow your
machine to bits every time you meet a bios bug. Having a single vm doing all
the jobs makes sense however, as it keeps the bios single threaded in its
happy virtual world

Alan

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