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.