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

On Fri 2007-12-14 15:33:28, Ingo Molnar wrote:

* Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

There is another reason we can't just do a dumb changeover - two
actually

#1: Some drivers are using inb_p/outb_p in PCI cases which are going
#to cause PCI posting changes. Most are probably just wrong in the
#first place but they need hand checking

hm, any intelligent way to force PCI posting? I guess not.

here's a list of candidate drivers (match the out*_p() pattern and do
pci)

./char/epca.c
./char/sonypi.c
./scsi/megaraid.c
./ide/pci/serverworks.c
./ide/pci/cmd640.c
./input/mouse/pc110pad.c

/*
* We try to avoid enabling the hardware if it's not
* there, but we don't know how to test. But we do know
* that the PC110 is not a PCI system. So if we find any
* PCI devices in the machine, we don't have a PC110.
*/

...so pc110 _may_ be okay.
Pavel

--
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