can somebody explain how linux support 64G memory

michaelc (michaelc@turbolinux.com.cn)
Wed, 21 Feb 2001 10:44:30 +0800


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

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