In include/linux/hugetlb.h, we find the following statement
#ifndef hugepages_supported
/*
* Some platform decide whether they support huge pages at boot
* time. Some of them, such as powerpc, set HPAGE_SHIFT to 0
* when there is no such support
*/
#define hugepages_supported() (HPAGE_SHIFT != 0)
#endif
But in arch/powerpc/include/asm/page.h we find:
#ifdef CONFIG_HUGETLB_PAGE
extern unsigned int HPAGE_SHIFT;
#else
#define HPAGE_SHIFT PAGE_SHIFT
#endif
Is that correct ? SHouldn't HPAGE_SHIFT be defined to 0 when
CONFIG_HUGETLB_PAGE is not defined ?
Christophe
