[Xen-devel] xen kernel headers: circular dependencies

[Christoph Egger <Christoph.Egger@xxxxxxx>]

Hi,

I just uncovered a circular header dependency starting from
_PAGE_NX.

_PAGE_NX is defined in asm-x86/x86_{64,32}/page.h and uses cpu_has_nx
cpu_has_nx is defined in asm-x86/cpufeature.h.

So make asm-x86/x86_{64,32}/page.h include <asm/cpufeature.h>

cpufeature.h uses boot_cpu_data which is declared in asm-x86/processor.h

So make cpufeature.h include <asm/processor.h>

processor.h uses NCAPINTS which is defined in cpufeature.h

processor.h already includes cpufeature.h


gcc fails to build with complaining about implicit declaration of 
function 'get_cpu_info' then.

Any suggestions on how to fix this?

Christoph


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