Re: [rfc 08/45] cpu alloc: x86 support

From: H. Peter Anvin
Date: Tue Nov 20 2007 - 16:01:57 EST


Andi Kleen wrote:
This limitation shouldn't apply to the percpu area, since gs_base can be pointed anywhere in the address space -- in effect we're always indirect.

The initial reference copy of the percpu area has to be addressed by
the linker.

Hmm, in theory since it is not actually used by itself I suppose you could move it into positive space.


Positive space for absolute references, or just below -2 GB for %rip references; either should work.

-hpa
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