RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction flag

[H. Peter Anvin]

Chris Lattner wrote:
> 
> On Mar 5, 2008, at 1:34 PM, H. Peter Anvin wrote:
> 
>> Richard Guenther wrote:
>>> We didn't yet run into this issue and build openSUSE with 4.3 since 
>>> more than
>>> three month.
>>
>> Well, how often do you take a trap inside an overlapping memmove()?
> 
> How hard is it to change the kernel signal entry path from "pushf" to 
> "pushf;cld"?  Problem solved, no?

Not quite, but fixing it in the kernel is easy.

Still breaks for running on all old kernels.

	-hpa