Messages in this thread | | | Date | Thu, 09 Jun 2011 07:41:00 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [patch 5/5] i8253: Cleanup outb/inb magic |
| |
On 06/09/2011 06:34 AM, Ralf Baechle wrote: > On Thu, Jun 09, 2011 at 01:08:30PM -0000, Thomas Gleixner wrote: > >> Remove the hysterical outb/inb_pit defines and use outb_p/inb_p in the >> code. > > FWIW, I've traced the use of inb_p and outb_p to access the PIT timer > all the way back to Linux 0.10 > > I wonder if any of the systems affected actually has enough memory to boot > a modern kernel or if the _p versions have become useless bagagge that > should be dropped - cleanup which would then also allow more code to the > iomap() API. > > I'm interested because quite a few MIPS systems have been built based on > Intel, OPTi and other chipsets which may or may not have been affected. >
On the x86 side, we already have configurability of the delay in inb_p/outb_p... one option could be null delay.
-hpa
| |