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[S390] 4level-fixup cleanup
Get independent from asm-generic/4level-fixup.h Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
parent
3610cce87a
commit
190a1d722a
@ -18,13 +18,18 @@
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static inline pte_t *follow_table(struct mm_struct *mm, unsigned long addr)
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{
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pgd_t *pgd;
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pud_t *pud;
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pmd_t *pmd;
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pgd = pgd_offset(mm, addr);
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if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
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return NULL;
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pmd = pmd_offset(pgd, addr);
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pud = pud_offset(pgd, addr);
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if (pud_none(*pud) || unlikely(pud_bad(*pud)))
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return NULL;
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pmd = pmd_offset(pud, addr);
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if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
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return NULL;
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@ -81,6 +81,7 @@ void show_mem(void)
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static void __init setup_ro_region(void)
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{
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pgd_t *pgd;
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pud_t *pud;
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pmd_t *pmd;
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pte_t *pte;
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pte_t new_pte;
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@ -91,7 +92,8 @@ static void __init setup_ro_region(void)
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for (; address < end; address += PAGE_SIZE) {
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pgd = pgd_offset_k(address);
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pmd = pmd_offset(pgd, address);
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pud = pud_offset(pgd, address);
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pmd = pmd_offset(pud, address);
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pte = pte_offset_kernel(pmd, address);
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new_pte = mk_pte_phys(address, __pgprot(_PAGE_RO));
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*pte = new_pte;
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@ -73,6 +73,8 @@ static void __init_refok *vmem_alloc_pages(unsigned int order)
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return alloc_bootmem_pages((1 << order) * PAGE_SIZE);
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}
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#define vmem_pud_alloc() ({ BUG(); ((pud_t *) NULL); })
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static inline pmd_t *vmem_pmd_alloc(void)
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{
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pmd_t *pmd = NULL;
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@ -103,6 +105,7 @@ static int vmem_add_range(unsigned long start, unsigned long size)
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{
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unsigned long address;
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pgd_t *pg_dir;
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pud_t *pu_dir;
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pmd_t *pm_dir;
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pte_t *pt_dir;
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pte_t pte;
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@ -111,13 +114,21 @@ static int vmem_add_range(unsigned long start, unsigned long size)
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for (address = start; address < start + size; address += PAGE_SIZE) {
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pg_dir = pgd_offset_k(address);
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if (pgd_none(*pg_dir)) {
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pu_dir = vmem_pud_alloc();
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if (!pu_dir)
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goto out;
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pgd_populate_kernel(&init_mm, pg_dir, pu_dir);
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}
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pu_dir = pud_offset(pg_dir, address);
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if (pud_none(*pu_dir)) {
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pm_dir = vmem_pmd_alloc();
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if (!pm_dir)
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goto out;
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pgd_populate_kernel(&init_mm, pg_dir, pm_dir);
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pud_populate_kernel(&init_mm, pu_dir, pm_dir);
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}
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pm_dir = pmd_offset(pg_dir, address);
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pm_dir = pmd_offset(pu_dir, address);
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if (pmd_none(*pm_dir)) {
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pt_dir = vmem_pte_alloc();
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if (!pt_dir)
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@ -143,6 +154,7 @@ static void vmem_remove_range(unsigned long start, unsigned long size)
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{
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unsigned long address;
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pgd_t *pg_dir;
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pud_t *pu_dir;
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pmd_t *pm_dir;
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pte_t *pt_dir;
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pte_t pte;
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@ -150,9 +162,10 @@ static void vmem_remove_range(unsigned long start, unsigned long size)
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pte_val(pte) = _PAGE_TYPE_EMPTY;
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for (address = start; address < start + size; address += PAGE_SIZE) {
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pg_dir = pgd_offset_k(address);
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if (pgd_none(*pg_dir))
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pu_dir = pud_offset(pg_dir, address);
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if (pud_none(*pu_dir))
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continue;
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pm_dir = pmd_offset(pg_dir, address);
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pm_dir = pmd_offset(pu_dir, address);
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if (pmd_none(*pm_dir))
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continue;
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pt_dir = pte_offset_kernel(pm_dir, address);
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@ -169,6 +182,7 @@ static int vmem_add_mem_map(unsigned long start, unsigned long size)
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unsigned long address, start_addr, end_addr;
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struct page *map_start, *map_end;
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pgd_t *pg_dir;
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pud_t *pu_dir;
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pmd_t *pm_dir;
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pte_t *pt_dir;
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pte_t pte;
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@ -183,13 +197,21 @@ static int vmem_add_mem_map(unsigned long start, unsigned long size)
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for (address = start_addr; address < end_addr; address += PAGE_SIZE) {
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pg_dir = pgd_offset_k(address);
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if (pgd_none(*pg_dir)) {
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pu_dir = vmem_pud_alloc();
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if (!pu_dir)
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goto out;
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pgd_populate_kernel(&init_mm, pg_dir, pu_dir);
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}
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pu_dir = pud_offset(pg_dir, address);
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if (pud_none(*pu_dir)) {
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pm_dir = vmem_pmd_alloc();
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if (!pm_dir)
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goto out;
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pgd_populate_kernel(&init_mm, pg_dir, pm_dir);
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pud_populate_kernel(&init_mm, pu_dir, pm_dir);
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}
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pm_dir = pmd_offset(pg_dir, address);
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pm_dir = pmd_offset(pu_dir, address);
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if (pmd_none(*pm_dir)) {
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pt_dir = vmem_pte_alloc();
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if (!pt_dir)
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@ -82,6 +82,7 @@ typedef struct { unsigned long pte; } pte_t;
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#ifndef __s390x__
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typedef struct { unsigned long pmd; } pmd_t;
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typedef struct { unsigned long pud; } pud_t;
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typedef struct {
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unsigned long pgd0;
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unsigned long pgd1;
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@ -90,6 +91,7 @@ typedef struct {
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} pgd_t;
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#define pmd_val(x) ((x).pmd)
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#define pud_val(x) ((x).pud)
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#define pgd_val(x) ((x).pgd0)
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#else /* __s390x__ */
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@ -98,10 +100,12 @@ typedef struct {
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unsigned long pmd0;
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unsigned long pmd1;
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} pmd_t;
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typedef struct { unsigned long pud; } pud_t;
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typedef struct { unsigned long pgd; } pgd_t;
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#define pmd_val(x) ((x).pmd0)
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#define pmd_val1(x) ((x).pmd1)
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#define pud_val(x) ((x).pud)
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#define pgd_val(x) ((x).pgd)
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#endif /* __s390x__ */
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@ -56,11 +56,17 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
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return _SEGMENT_ENTRY_EMPTY;
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}
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#define pud_alloc_one(mm,address) ({ BUG(); ((pud_t *)2); })
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#define pud_free(x) do { } while (0)
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#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
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#define pmd_free(x) do { } while (0)
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#define pgd_populate(mm, pmd, pte) BUG()
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#define pgd_populate_kernel(mm, pmd, pte) BUG()
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#define pgd_populate(mm, pgd, pud) BUG()
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#define pgd_populate_kernel(mm, pgd, pud) BUG()
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#define pud_populate(mm, pud, pmd) BUG()
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#define pud_populate_kernel(mm, pud, pmd) BUG()
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#else /* __s390x__ */
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@ -69,6 +75,9 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
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return _REGION3_ENTRY_EMPTY;
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}
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#define pud_alloc_one(mm,address) ({ BUG(); ((pud_t *)2); })
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#define pud_free(x) do { } while (0)
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
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{
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unsigned long *crst = crst_table_alloc(mm, s390_noexec);
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@ -78,20 +87,23 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
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}
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#define pmd_free(pmd) crst_table_free((unsigned long *) pmd)
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static inline void pgd_populate_kernel(struct mm_struct *mm,
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pgd_t *pgd, pmd_t *pmd)
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#define pgd_populate(mm, pgd, pud) BUG()
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#define pgd_populate_kernel(mm, pgd, pud) BUG()
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static inline void pud_populate_kernel(struct mm_struct *mm,
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pud_t *pud, pmd_t *pmd)
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{
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pgd_val(*pgd) = _REGION3_ENTRY | __pa(pmd);
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pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
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}
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static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
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static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
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{
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pgd_t *shadow_pgd = get_shadow_table(pgd);
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pud_t *shadow_pud = get_shadow_table(pud);
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pmd_t *shadow_pmd = get_shadow_table(pmd);
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if (shadow_pgd && shadow_pmd)
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pgd_populate_kernel(mm, shadow_pgd, shadow_pmd);
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pgd_populate_kernel(mm, pgd, pmd);
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if (shadow_pud && shadow_pmd)
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pud_populate_kernel(mm, shadow_pud, shadow_pmd);
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pud_populate_kernel(mm, pud, pmd);
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}
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#endif /* __s390x__ */
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@ -13,8 +13,6 @@
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#ifndef _ASM_S390_PGTABLE_H
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#define _ASM_S390_PGTABLE_H
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#include <asm-generic/4level-fixup.h>
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/*
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* The Linux memory management assumes a three-level page table setup. For
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* s390 31 bit we "fold" the mid level into the top-level page table, so
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@ -60,14 +58,18 @@ extern char empty_zero_page[PAGE_SIZE];
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*/
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#ifndef __s390x__
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# define PMD_SHIFT 22
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# define PUD_SHIFT 22
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# define PGDIR_SHIFT 22
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#else /* __s390x__ */
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# define PMD_SHIFT 21
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# define PUD_SHIFT 31
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# define PGDIR_SHIFT 31
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#endif /* __s390x__ */
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#define PMD_SIZE (1UL << PMD_SHIFT)
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#define PMD_MASK (~(PMD_SIZE-1))
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#define PUD_SIZE (1UL << PUD_SHIFT)
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#define PUD_MASK (~(PUD_SIZE-1))
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#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE-1))
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@ -80,10 +82,12 @@ extern char empty_zero_page[PAGE_SIZE];
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#ifndef __s390x__
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# define PTRS_PER_PTE 1024
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# define PTRS_PER_PMD 1
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# define PTRS_PER_PUD 1
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# define PTRS_PER_PGD 512
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#else /* __s390x__ */
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# define PTRS_PER_PTE 512
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# define PTRS_PER_PMD 1024
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# define PTRS_PER_PUD 1
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# define PTRS_PER_PGD 2048
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#endif /* __s390x__ */
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@ -93,6 +97,8 @@ extern char empty_zero_page[PAGE_SIZE];
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printk("%s:%d: bad pte %p.\n", __FILE__, __LINE__, (void *) pte_val(e))
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#define pmd_ERROR(e) \
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printk("%s:%d: bad pmd %p.\n", __FILE__, __LINE__, (void *) pmd_val(e))
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#define pud_ERROR(e) \
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printk("%s:%d: bad pud %p.\n", __FILE__, __LINE__, (void *) pud_val(e))
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#define pgd_ERROR(e) \
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printk("%s:%d: bad pgd %p.\n", __FILE__, __LINE__, (void *) pgd_val(e))
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@ -192,7 +198,7 @@ extern unsigned long vmalloc_end;
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* I Segment-Invalid Bit: Segment is not available for address-translation
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* TT Type 01
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* TF
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* TL Table lenght
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* TL Table length
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*
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* The 64 bit regiontable origin of S390 has following format:
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* | region table origon | DTTL
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@ -435,22 +441,30 @@ static inline int pgd_present(pgd_t pgd) { return 1; }
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static inline int pgd_none(pgd_t pgd) { return 0; }
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static inline int pgd_bad(pgd_t pgd) { return 0; }
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static inline int pud_present(pud_t pud) { return 1; }
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static inline int pud_none(pud_t pud) { return 0; }
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static inline int pud_bad(pud_t pud) { return 0; }
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#else /* __s390x__ */
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static inline int pgd_present(pgd_t pgd)
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static inline int pgd_present(pgd_t pgd) { return 1; }
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static inline int pgd_none(pgd_t pgd) { return 0; }
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static inline int pgd_bad(pgd_t pgd) { return 0; }
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static inline int pud_present(pud_t pud)
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{
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return pgd_val(pgd) & _REGION_ENTRY_ORIGIN;
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return pud_val(pud) & _REGION_ENTRY_ORIGIN;
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}
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static inline int pgd_none(pgd_t pgd)
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static inline int pud_none(pud_t pud)
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{
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return pgd_val(pgd) & _REGION_ENTRY_INV;
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return pud_val(pud) & _REGION_ENTRY_INV;
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}
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static inline int pgd_bad(pgd_t pgd)
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static inline int pud_bad(pud_t pud)
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{
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unsigned long mask = ~_REGION_ENTRY_ORIGIN & ~_REGION_ENTRY_INV;
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return (pgd_val(pgd) & mask) != _REGION3_ENTRY;
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return (pud_val(pud) & mask) != _REGION3_ENTRY;
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}
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#endif /* __s390x__ */
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@ -526,7 +540,8 @@ static inline int pte_young(pte_t pte)
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#ifndef __s390x__
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static inline void pgd_clear(pgd_t * pgdp) { }
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#define pgd_clear(pgd) do { } while (0)
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#define pud_clear(pud) do { } while (0)
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static inline void pmd_clear_kernel(pmd_t * pmdp)
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{
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@ -538,18 +553,20 @@ static inline void pmd_clear_kernel(pmd_t * pmdp)
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#else /* __s390x__ */
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static inline void pgd_clear_kernel(pgd_t * pgdp)
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#define pgd_clear(pgd) do { } while (0)
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static inline void pud_clear_kernel(pud_t *pud)
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{
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pgd_val(*pgdp) = _REGION3_ENTRY_EMPTY;
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pud_val(*pud) = _REGION3_ENTRY_EMPTY;
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}
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static inline void pgd_clear(pgd_t * pgdp)
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static inline void pud_clear(pud_t * pud)
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{
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pgd_t *shadow_pgd = get_shadow_table(pgdp);
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pud_t *shadow = get_shadow_table(pud);
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pgd_clear_kernel(pgdp);
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if (shadow_pgd)
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pgd_clear_kernel(shadow_pgd);
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pud_clear_kernel(pud);
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if (shadow)
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pud_clear_kernel(shadow);
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}
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static inline void pmd_clear_kernel(pmd_t * pmdp)
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@ -810,63 +827,48 @@ static inline pte_t mk_pte(struct page *page, pgprot_t pgprot)
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return mk_pte_phys(physpage, pgprot);
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}
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static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot)
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{
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unsigned long physpage = __pa((pfn) << PAGE_SHIFT);
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return mk_pte_phys(physpage, pgprot);
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}
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#ifdef __s390x__
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static inline pmd_t pfn_pmd(unsigned long pfn, pgprot_t pgprot)
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{
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unsigned long physpage = __pa((pfn) << PAGE_SHIFT);
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return __pmd(physpage + pgprot_val(pgprot));
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}
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#endif /* __s390x__ */
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#define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
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#define pte_page(x) pfn_to_page(pte_pfn(x))
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#define pmd_page_vaddr(pmd) (pmd_val(pmd) & PAGE_MASK)
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#define pmd_page(pmd) pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
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#define pgd_page_vaddr(pgd) (pgd_val(pgd) & PAGE_MASK)
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#define pgd_page(pgd) pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT)
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/* to find an entry in a page-table-directory */
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#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
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#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
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#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
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#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
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#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
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/* to find an entry in a kernel page-table-directory */
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#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
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#define pgd_offset_k(address) pgd_offset(&init_mm, address)
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#ifndef __s390x__
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/* Find an entry in the second-level page table.. */
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static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
|
||||
{
|
||||
return (pmd_t *) dir;
|
||||
}
|
||||
#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
|
||||
#define pud_deref(pmd) ({ BUG(); 0UL; })
|
||||
#define pgd_deref(pmd) ({ BUG(); 0UL; })
|
||||
|
||||
#define pud_offset(pgd, address) ((pud_t *) pgd)
|
||||
#define pmd_offset(pud, address) ((pmd_t *) pud + pmd_index(address))
|
||||
|
||||
#else /* __s390x__ */
|
||||
|
||||
/* Find an entry in the second-level page table.. */
|
||||
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
|
||||
#define pmd_offset(dir,addr) \
|
||||
((pmd_t *) pgd_page_vaddr(*(dir)) + pmd_index(addr))
|
||||
#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
|
||||
#define pud_deref(pud) (pud_val(pud) & _REGION_ENTRY_ORIGIN)
|
||||
#define pgd_deref(pgd) ({ BUG(); 0UL; })
|
||||
|
||||
#define pud_offset(pgd, address) ((pud_t *) pgd)
|
||||
|
||||
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
|
||||
{
|
||||
pmd_t *pmd = (pmd_t *) pud_deref(*pud);
|
||||
return pmd + pmd_index(address);
|
||||
}
|
||||
|
||||
#endif /* __s390x__ */
|
||||
|
||||
/* Find an entry in the third-level page table.. */
|
||||
#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
|
||||
#define pte_offset_kernel(pmd, address) \
|
||||
((pte_t *) pmd_page_vaddr(*(pmd)) + pte_index(address))
|
||||
#define pfn_pte(pfn,pgprot) mk_pte_phys(__pa((pfn) << PAGE_SHIFT),(pgprot))
|
||||
#define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
|
||||
#define pte_page(x) pfn_to_page(pte_pfn(x))
|
||||
|
||||
#define pmd_page(pmd) pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
|
||||
|
||||
/* Find an entry in the lowest level page table.. */
|
||||
#define pte_offset(pmd, addr) ((pte_t *) pmd_deref(*(pmd)) + pte_index(addr))
|
||||
#define pte_offset_kernel(pmd, address) pte_offset(pmd,address)
|
||||
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
|
||||
#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
|
||||
#define pte_unmap(pte) do { } while (0)
|
||||
@ -959,4 +961,3 @@ extern void memmap_init(unsigned long, int, unsigned long, unsigned long);
|
||||
#include <asm-generic/pgtable.h>
|
||||
|
||||
#endif /* _S390_PAGE_H */
|
||||
|
||||
|
||||
@ -121,6 +121,8 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
|
||||
#endif
|
||||
}
|
||||
|
||||
#define pud_free_tlb(tlb, pud) do { } while (0)
|
||||
|
||||
#define tlb_start_vma(tlb, vma) do { } while (0)
|
||||
#define tlb_end_vma(tlb, vma) do { } while (0)
|
||||
#define tlb_remove_tlb_entry(tlb, ptep, addr) do { } while (0)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user