On Tue, 2009-02-03 at 13:07 -0800, Cam Ellison wrote: > Well, as I go back and read what it actually says in xconfig, it's for a > 32-bit processor with more than 4G of RAM: > > 64GB (HIGHMEM64G) > > Select this if you have a 32-bit processor and more than 4 > gigabytes of physical RAM. > > The 4GB setting is thus, and I think that's what he needs if he has a > 32-bit processor: > > 4GB (HIGHMEM4G) > > Select this if you have a 32-bit processor and between 1 and 4 > gigabytes of physical RAM. > > As to my comments about 64-bit processors, I stand corrected. And thank > you, Bill, for the additional information. > > I'm not going to quote what it says under "off" - it's too long - but > maybe he should read that and see if he can't find the answer. My > interpretation is that it should be Off for a "64-bit processor".
In the kernel configuration, many times options are dependant on other options (e.g. what good is it to ask about a broadcom wireless card if you don't want WiFi support in your kernel at all). HIGHMEM4G and HIGHMEM64G are defined in arch/x86/Kconfig and depend on X86_32, so the choice doesn't apply to 64-bit kernels, to say nothing of non-Intel kernels, and doesn't even appear in `make *config` for these kernels. --Ken -- Ken (Chanoch) Bloom. PhD candidate. Linguistic Cognition Laboratory. Department of Computer Science. Illinois Institute of Technology. http://www.iit.edu/~kbloom1/
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