Re: Kernel vs user memory

H. Peter Anvin
2009-01-17T06:39:18Z

sidc7 wrote:
> If I am not mistaken, Linux kernel is a high memory kernel, hence for Linux
> kernel, nothing will be mapped to the kernel space, other than the memory
> beyond 896MB which is the kernel's virtual address space. Am I right on
> this?

It's a compilation option, and depends on the architecture. What you
described is true for an i386 kernel compiled as a highmem kernel. On
the other hand, a 64 bit kernel is *never* highmem.

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.