Re: Pull request: scottwood/linux.git next

On Mon, Aug 19, 2013 at 7:47 PM, Benjamin Herrenschmidt
[off-list ref] wrote:

On Mon, 2013-08-19 at 17:56 -0500, Scott Wood wrote:

quoted

If we use the generic CPU target then mftb won't get turned into mfspr
(I assume this is what you meant by "tricky asm").  Does mfspr work
everywhere, including from userspace?  Or do we need to patch?  What
about 403GCX which seems to need some special SPR (I could leave the
existing ifdef alone, but what about vdso)?

I think mfspr works everywhere we care about but I might be mistaken :-)
I don't think anybody have tried booting a 403 in a looooong time. I
would be surprised if it still worked.

I think I have one buried somewhere in my garage.  I'm not digging it out.

josh