Messages in this thread |  | | | Date | Tue, 20 Feb 2001 21:45:22 -0800 | | From | Robert Read <> | | Subject | Re: can somebody explain how linux support 64G memory |
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There are two ways, the PAE flag and the PSE-36 feature introduced in P3. These extensions are documented in the IA-32 Intel Architecture Software Developer's Manuals, which you can find here:
http://developer.intel.com/design/Pentium4/manuals/
Look in Volume 3, Chapter 3 for this info.
robert
On Wed, Feb 21, 2001 at 10:44:30AM +0800, michaelc wrote: > Hi, > How does linux support more than 4G memory? I 've read the > documentation of Intel IA-32 Architecture, I knew that OS > just address up to 4G physical address space, If OS want to > access additional 4-GByte section of physical memory, it must > change the pointer in register CR3 or entries in the > page-directory-pointer table. That means that Linux just has > up to 4-GByte page mapping at one time , is that right? > > > > -- > Best regards, > michael chen mailto:michaelc@turbolinux.com.cn > > > - > 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/ - 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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