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Date: Fri, 28 Jul 2006 19:03:10 +0200 (MEST) From: Jan Engelhardt <jengelh@...ux01.gwdg.de> To: Robert Hancock <hancockr@...w.ca> cc: ravibt@...il.com, linux-kernel <linux-kernel@...r.kernel.org> Subject: Re: BIOS detects 4 GB RAM, but kernel does not > > Essentially I don't think there is much you can do about this on this board. > The memory space starting at around 3.2GB is being used by the memory-mapped IO > regions for the PCI and PCI Express devices and motherboard resources and > therefore "covers up" the RAM in that part of the address space. The solution > to this is for the system to remap the affected memory above the 4GB mark, > which is possible with Athlon 64/Opteron CPUs and on some of the Intel server > chipsets. However, I don't think any Intel desktop chipsets support this for > some unfathomable reason. Maybe PAE can help? Jan Engelhardt -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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