sysenter patch question
ssouhlal at FreeBSD.org
Sat Jan 14 11:36:05 PST 2006
Scott Long wrote:
> I was the last to work on the patch, and that was about a year or so
> ago. It worked fine under fairly simple processes, but trying to run
> things like KDE and Mozilla made it blow up fairly quickly. I suspect
> that it has something to do with thread upcalls, but I never got around
> to figuring it out. If someone wants to pick it up, that would be
> great. Note that this only matters for i386; amd64 has always had its
> own version of sysenter that it uses.
As far as I know, amd64 uses the SYSCALL instruction, which I believe,
should have about the same performance as SYSENTER.
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