Messages in this thread | | | Date | Tue, 19 Jul 2005 00:18:52 +0500 | From | Fawad Lateef <> | Subject | Re: Avoiding BIGMEM support programatically. |
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On 7/18/05, vamsi krishna <vamsi.krishnak@gmail.com> wrote: > Hello All, > > I have a program working fine on a 2.6.xx-smp kernel, and the program > crashes on the same version kernel with bigmem i.e (2.6.xxx-bigmem). >
What is your program ??? what it is doing ??? Can u explain ?? or send some code portion ?? b/c the BIGMEM kernel and smp/normal kenel has only a difference of HIGHMEM64G which allows system/kernel on x86 to use physical memory upto 64GB ..... and enabling this creates little-bit overhead on the kernel, but I don't think it will effect the working of most of the kernel modules ......
> I also found that for a same executable on bigmem kernel the virtual > address's of '&_start' and '&_etext', seem to vary in every new run. >
I don't know abt this, so can't say any thing ....
> Is there any way I can avoid the kernel's bigmem virtual address > mapping programatically? and still run the program on a bigmem kernel? >
I think this can be done through specifying GFP_ATOMIC flag in the memory allocation function, so that it will use ZONE_NORMAL of the kernel ....... (if i m wrong, then plzz do correct me)
-- Fawad Lateef - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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