Messages in this thread | | | Date | Tue, 01 Jan 2008 13:21:47 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. |
| |
Christer Weinigel wrote: > > out 80h, al is only two bytes. Any alternative that has been suggested > in this discussion will use more space. mov dx, alt_port; out dx, al > will be larger, a function call will definitely be a lot larger. People > have been making changes to the kernel to save a couple of hundred > bytes of text size. >
If text size becomes a problem in this case, then we can use an alternatives-like mechanism to fix up the kernel. However, realistically this probably should be a function call *combined with* the out and in; that reduces the impact somewhat.
-hpa
| |