Manu Garg wrote:
I am writing this to announce an article on "sysenter" way of doing
systems calls in newer linux kernels. Here is the link:
http://manugarg.blogspot.com/2006/07/sysenter-based-system-call-mechanism.html
thanks for that.
my $.02 - added to Glossary at kernelnewbies,
I included your apparently permanent link:
http://manugarg.googlepages.com/systemcallinlinux2_6.html
Please chg the entry for correctness, elaboration, or if you move the page
thanks again
-jimc
Abstract:
Starting with version 2.5, linux kernel introduced a new system call
entry mechanism on Pentium II+ processors. Due to performance issues
on Pentium IV processors with existing software interrupt method, an
alternative system call entry mechanism was implemented using
SYSENTER/SYSEXIT instructions available on Pentium II+ processors.
This articles explores this new mechanism. Discussion is limited to
x86 architecture and all source code listings are based on linux
kernel 2.6.15.6.
hth, m
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