Kyle McMartin wrote:
On Mon, Jan 19, 2009 at 01:36:08PM -0500, Neil Horman wrote:
> Absolutely, I've got a Thinkpad T42 here that does just fine on fedora 10.
> Unless of course, I try to load a PAE enabled kernel on it.
>
> I've not looked into it at all, but this thread got me thinking, is there any
> particular reason that we can't merge the pae and non-pae kernels using the same
> alternatives approach we used to merge smp & up?
>
I looked into this several years ago, it's actually fairly gnarly since
depending on PAE we set up the swapper page tables differently, and
other ugly differences.
I should resurrect the patch set, though I think rationalizing it with the
Xen merge might be more pain than it's worth... last time I looked at it
there was a ridiculous amount of rejects.
Well, it depends on if you are talking about the non-upstream Xen patch, or the
current upstream pv_ops. The former is all but dead, so you don't have to worry
about that, and the latter *should* (famous last words) mostly stay out of your
way through pv_ops. Though I haven't gone in and implemented it myself, so it's
easy for me to say :).
I think choosing PAE at runtime would be the ideal situation, if we can get there.
--
Chris Lalancette