Messages in this thread | | | Subject | Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why? | From | Benjamin Herrenschmidt <> | Date | Sun, 11 Oct 2009 20:08:53 +1100 |
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On Tue, 2009-10-06 at 07:26 -0700, Linus Torvalds wrote:
> The Intel Xorg guys used to do everything in 32-bit kernels because they > were also testing that they didn't break compatibility (which is a big > deal with that whole crazy DRM-in-kernel/direct-rendering-in-user-space > thing) and seemingly didn't realize that the compat layer was _supposed_ > to mean that they could run a 64-bit kernel and still have a working > 32-bit land. > > It's driver interfaces like that that tend to break. ioctl's etc. But I > have heard less noise about it lately, so I do think it's mostly working.
I'm running a 32-bit Ubuntu karmic distro with a 64-bit kernel on my thinkpad and so far, I yet have to encounter a single obvious problem due to the compat layer. Everything seems to work fine including 3D, compiz fancyness in X etc... :-)
Cheers, Ben.
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