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add pte_xchg()

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NAKAMURA Gou
2014-06-24 12:10:17 +09:00
parent c395dc2410
commit 04f1b3f401
1 changed files with 9 additions and 0 deletions
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9
arch/x86/kernel/include/arch-memory.h
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@@ -158,6 +158,15 @@ static inline uintptr_t pte_get_phys(pte_t *ptep)
return (*ptep & PT_PHYSMASK); return (*ptep & PT_PHYSMASK);
} }
#if 0 /* XXX: workaround. cannot use panic() here */
static inline void pte_xchg(pte_t *ptep, pte_t *valp)
{
*valp = xchg(ptep, *valp);
}
#else
#define pte_xchg(p,vp) do { *(vp) = xchg((p), *(vp)); } while (0)
#endif
struct page_table; struct page_table;
void set_pte(pte_t *ppte, unsigned long phys, enum ihk_mc_pt_attribute attr); void set_pte(pte_t *ppte, unsigned long phys, enum ihk_mc_pt_attribute attr);
pte_t *get_pte(struct page_table *pt, void *virt, enum ihk_mc_pt_attribute attr); pte_t *get_pte(struct page_table *pt, void *virt, enum ihk_mc_pt_attribute attr);