Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

Alan Cox
2007-12-13T13:28:57Z

On Thu, 13 Dec 2007 08:13:29 -0500
"David P. Reed" <dpreed@reed.com> wrote:

> Perhaps what was meant is that ISA-tuned timings make little sense on
> devices that are part of the chipset or on the PCI or PCI-X buses?

No.

ISA as LPC bus is alive and well inside and outside chipsets. Welcome to
planet earth and the reality of 'its cheaper to reuse cells than design a
new one'. For the chipset logic like DMA controllers the _p is absolutely
correct.

Alan