Messages in this thread | | | Date | Fri, 13 Dec 2002 09:53:04 +0100 (MET) | From | Geert Uytterhoeven <> | Subject | Re: atyfb in 2.5.51 |
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On 11 Dec 2002, Alan Cox wrote: > On Wed, 2002-12-11 at 20:43, David S. Miller wrote: > > fbdev is nice, in the specific cases where the device fits the fbdev > > model, because once you have the kernel bits you have X support :) > > fbdev also can't be used in some situations on x86. Deeply fascinating > things happen on some x86 processors if you execute a loop of code with > an instruction that crosses two different memory types.
Do you mean one load/store access to memory where the first and the last part (e.g. first 2 and last 2 bytes for a 32-bit word) are to different memory types (e.g. main RAM and video RAM on PCI)? If yes, where does that happen? If no, can you please clarify?
(At first I thought you meant an instruction where the opcode crosses those two memory types, but we don't put code in video RAM...)
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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