[lkml]   [2007]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [rfc 37/45] x86_64: Support for fast per cpu operations
On Mon, 19 Nov 2007, H. Peter Anvin wrote:

> There was, at some point, discussion about using the gcc TLS mechanism, which
> should permit even better code to be generated. Unfortunately, it would

How would that be possible? Oh. You mean the discussion where I mentioned
using the thread attribute?

> require gcc to be able to reference %gs instead of %fs (and vice versa for
> i386), which I don't think is available in anything except maybe the most
> cutting-edge version of gcc.

Right. That is why we do it in ASM here.

> However, if we're doing a masssive revampt it would be good to get an idea of
> how to migrate to that model eventually, or why it doesn't make sense at all.

If you can tell me what the difference would be then we can discuss it.
AFAICT there is no difference. Both use a segment register.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-11-20 03:19    [W:0.134 / U:0.408 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site