On Tue, 1 Mar 2011, Saravana Kannan wrote:

On 03/01/2011 02:37 AM, Will Deacon wrote:

quoted

Perhaps a more robust fix would be to remove the register int
declarations and handle the parameter marshalling in the same asm block
that contains the smc?

I was thinking the same, but the opposing idea I heard was that not doing it
inside the asm block would allow GCC to be make better use of the registers.

Indeed.  And a significant body of code out there does rely on this gcc 
feature, so it has to minimally work.

Didn't have a strong opinion either way, so we went with the implementation
that was sent out.

ACK.


Nicolas