Re: {make,set,swap}context broken on powerpc32

[Steven Munroe <munroesj at us dot ibm dot com>]

Jakub Jelinek wrote:

> On Tue, Dec 19, 2006 at 11:15:24AM -0600, Steven Munroe wrote:
>  
>
> > This is similar to the patch I submitted on 12/13/06,
> > http://sources.redhat.com/ml/libc-alpha/2006-12/msg00115.html.
> >    
>
> I don't understand the getcontext/swapcontext bits in the patch.
> There is no need to touch oldctx->uc_mcontext.uc_regs when
> oldctx is immediately passed as first argument to swapcontext(2),
> that syscall overwrites it anyway:
>  
If that is true for old versions of the kernels as well?

If all versions of kernel where __ASSUME_SWAPCONTEXT_SYSCALL is defined, 
sets the uc_regs pointer to at least double word then just the 
makecontext change is required.

I was just being careful.