diff options
Diffstat (limited to 'include/asm-s390/page.h')
| -rw-r--r-- | include/asm-s390/page.h | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h index fe7f92b6ae6d..f0f4579eac13 100644 --- a/include/asm-s390/page.h +++ b/include/asm-s390/page.h @@ -19,17 +19,34 @@ #define PAGE_DEFAULT_ACC 0 #define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4) +#define HPAGE_SHIFT 20 +#define HPAGE_SIZE (1UL << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) + +#define ARCH_HAS_SETCLEAR_HUGE_PTE +#define ARCH_HAS_HUGE_PTE_TYPE +#define ARCH_HAS_PREPARE_HUGEPAGE +#define ARCH_HAS_HUGEPAGE_CLEAR_FLUSH + #include <asm/setup.h> #ifndef __ASSEMBLY__ static inline void clear_page(void *page) { - register unsigned long reg1 asm ("1") = 0; - register void *reg2 asm ("2") = page; - register unsigned long reg3 asm ("3") = 4096; - asm volatile( - " mvcl 2,0" - : "+d" (reg2), "+d" (reg3) : "d" (reg1) : "memory", "cc"); + if (MACHINE_HAS_PFMF) { + asm volatile( + " .insn rre,0xb9af0000,%0,%1" + : : "d" (0x10000), "a" (page) : "memory", "cc"); + } else { + register unsigned long reg1 asm ("1") = 0; + register void *reg2 asm ("2") = page; + register unsigned long reg3 asm ("3") = 4096; + asm volatile( + " mvcl 2,0" + : "+d" (reg2), "+d" (reg3) : "d" (reg1) + : "memory", "cc"); + } } static inline void copy_page(void *to, void *from) @@ -108,26 +125,6 @@ page_get_storage_key(unsigned long addr) return skey; } -extern unsigned long max_pfn; - -static inline int pfn_valid(unsigned long pfn) -{ - unsigned long dummy; - int ccode; - - if (pfn >= max_pfn) - return 0; - - asm volatile( - " lra %0,0(%2)\n" - " ipm %1\n" - " srl %1,28\n" - : "=d" (dummy), "=d" (ccode) - : "a" (pfn << PAGE_SHIFT) - : "cc"); - return !ccode; -} - #endif /* !__ASSEMBLY__ */ /* to align the pointer to the (next) page boundary */ |