lkml.org 
[lkml]   [2007]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH -rt] CONFIG_PARAVIRT and CONFIG_MCOUNT don't play well together
From
Date
On Fri, 2007-06-22 at 01:06 -0700, Chris Wright wrote:
> Current -rt is broken when compiling with CONFIG_PARAVIRT and
> CONFIG_MCOUNT both enabled. Because CONFIG_MCOUNT disables
> CONFIG_REGPARM, the calling convention must once again be explicit
> with fastcall. However, this was only half-way addressed in the -rt
> patch (adding fastcall back to paravirt_ops function ptr declaration but
> not the actual function definitions) so the compiled kernel has caller
> putting stuff in registers and callee pulling things from the stack.
> Impressive how far into boot it can get despite that ;-) Thanks to
> Steven Rostedt for prodding me and starting the initial debugging.

Chris, thanks a hell of a lot for looking into this!!!

-rt doesn't do much with paravirt, but since both -rt and lguest are two
things I love to play with, it was really bothering me that they were
not getting along.

Much appreciated!

-- Steve


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-22 14:47    [W:0.051 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site