Subject: Re: amd64 syscall.c question
To: Christos Zoulas <>
From: Simon Burge <>
List: port-amd64
Date: 06/07/2007 12:55:22
Christos Zoulas wrote:

> This can be fixed by compiling the same code twice. I think that mycroft
> measured the overhead of plain/fancy and he decided that the split was
> worth it.

As a data point, I converted pc532 to use syscall_{plain,fancy}() last
year.  It speed up lmbench's "lat_syscall null" benchmark by about 20%.