Re: sysenter patch question

Scott Long <scottl@xxxxxxxxxx> · Sat, 14 Jan 2006 13:02:50 -0700

Suleiman Souhlal wrote:

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.
--Suleiman

Actually, the AMD SYSCALL command is a heck of a lot easier to use since 
it doesn't make as many assumptions about segment descriptors.
Scott
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Re: sysenter patch question

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