[haiku-bugs] [Haiku] #5202: implement the optimized syscall instructions for AMD CPUs
- From: "mmadia" <trac@xxxxxxxxxxxx>
- Date: Tue, 05 Jan 2010 17:07:19 -0000
#5202: implement the optimized syscall instructions for AMD CPUs
---------------------------+------------------------------------------------
Reporter: mmadia | Owner: axeld
Type: enhancement | Status: new
Priority: normal | Milestone: Unscheduled
Component: System/Kernel | Version: R1/alpha1
Keywords: | Blockedby:
Platform: All | Blocking:
---------------------------+------------------------------------------------
Mentioned in this [//www.freelists.org/post/haiku-
commits/r34888-haikutrunksrcsystemkernelvm,6 mailing list thread],
{{{
> >PS: In case someone is looking for a (small) challenge: We still don't
use
> >the optimized syscall instructions for AMD CPUs.
>
> AMDs can't use sysenter/sysexit?
At least older models don't support those. No idea whether they've added
it
in newer ones. Though I suspect they wouldn't have done that, since they
have their own instructions (syscall/sysret), which are quite similar. You
should find a "initial_commpage_syscall():..." line in the syslog, telling
you what mechanism the kernel has decided to use.
}}}
--
Ticket URL: <http://dev.haiku-os.org/ticket/5202>
Haiku <http://dev.haiku-os.org>
Haiku - the operating system.
Other related posts:
