Hi,
In include/asm-i386/page.h, the pte_t is defined like this
#ifdef CONFIG_X86_PAE
typedef struct { unsigned long pte_low, pte_high; } pte_t;
#else
typedef struct { unsigned long pte_low; } pte_t;
#endif
in other words, the pte_t is defined according to two situations
respectively. But, a subsequent macro
#define __pte(x) ((pte_t) { (x) } )
is unique yet.
In PAE's case, I think that the __pte should have two parameters that
doesn't exist at all. This really puzzle me.
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