diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/hugetlb.h | 3 | ||||
| -rw-r--r-- | arch/s390/include/asm/page.h | 8 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/s390/mm/hugetlbpage.c | 65 | ||||
| -rw-r--r-- | arch/s390/mm/pgtable.c | 2 |
6 files changed, 13 insertions, 69 deletions
diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h index dfb542ade6b1..0130d0379edd 100644 --- a/arch/s390/include/asm/hugetlb.h +++ b/arch/s390/include/asm/hugetlb.h @@ -37,9 +37,6 @@ static inline int prepare_hugepage_range(struct file *file, #define arch_clear_hugepage_flags(page) do { } while (0) -int arch_prepare_hugepage(struct page *page); -void arch_release_hugepage(struct page *page); - static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 53eacbd4f09b..dd345238d9a7 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -17,7 +17,10 @@ #define PAGE_DEFAULT_ACC 0 #define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4) -#define HPAGE_SHIFT 20 +#include <asm/setup.h> +#ifndef __ASSEMBLY__ + +extern int HPAGE_SHIFT; #define HPAGE_SIZE (1UL << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) @@ -27,9 +30,6 @@ #define ARCH_HAS_PREPARE_HUGEPAGE #define ARCH_HAS_HUGEPAGE_CLEAR_FLUSH -#include <asm/setup.h> -#ifndef __ASSEMBLY__ - static inline void storage_key_init_range(unsigned long start, unsigned long end) { #if PAGE_DEFAULT_KEY diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c index d7fa2f0f1425..f8498dde67b1 100644 --- a/arch/s390/kernel/compat_wrapper.c +++ b/arch/s390/kernel/compat_wrapper.c @@ -202,7 +202,7 @@ COMPAT_SYSCALL_WRAP1(epoll_create1, int, flags); COMPAT_SYSCALL_WRAP2(tkill, int, pid, int, sig); COMPAT_SYSCALL_WRAP3(tgkill, int, tgid, int, pid, int, sig); COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags); -COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, int, tls_val); +COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, unsigned long, tls); COMPAT_SYSCALL_WRAP2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags); COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim); COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag); diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index af4f41d52cde..73941bf42350 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -880,6 +880,8 @@ void __init setup_arch(char **cmdline_p) */ setup_hwcaps(); + HPAGE_SHIFT = MACHINE_HAS_HPAGE ? 20 : 0; + /* * Create kernel page tables and switch to virtual addressing. */ diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index c3f8e3df92ff..fb4bf2c4379e 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -86,31 +86,16 @@ static inline pte_t __pmd_to_pte(pmd_t pmd) void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) { - pmd_t pmd; + pmd_t pmd = __pte_to_pmd(pte); - pmd = __pte_to_pmd(pte); - if (!MACHINE_HAS_HPAGE) { - /* Emulated huge ptes loose the dirty and young bit */ - pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN; - pmd_val(pmd) |= pte_page(pte)[1].index; - } else - pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE; + pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE; *(pmd_t *) ptep = pmd; } pte_t huge_ptep_get(pte_t *ptep) { - unsigned long origin; - pmd_t pmd; + pmd_t pmd = *(pmd_t *) ptep; - pmd = *(pmd_t *) ptep; - if (!MACHINE_HAS_HPAGE && pmd_present(pmd)) { - origin = pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN; - pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN; - pmd_val(pmd) |= *(unsigned long *) origin; - /* Emulated huge ptes are young and dirty by definition */ - pmd_val(pmd) |= _SEGMENT_ENTRY_YOUNG | _SEGMENT_ENTRY_DIRTY; - } return __pmd_to_pte(pmd); } @@ -125,45 +110,6 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, return pte; } -int arch_prepare_hugepage(struct page *page) -{ - unsigned long addr = page_to_phys(page); - pte_t pte; - pte_t *ptep; - int i; - - if (MACHINE_HAS_HPAGE) - return 0; - - ptep = (pte_t *) pte_alloc_one(&init_mm, addr); - if (!ptep) - return -ENOMEM; - - pte_val(pte) = addr; - for (i = 0; i < PTRS_PER_PTE; i++) { - set_pte_at(&init_mm, addr + i * PAGE_SIZE, ptep + i, pte); - pte_val(pte) += PAGE_SIZE; - } - page[1].index = (unsigned long) ptep; - return 0; -} - -void arch_release_hugepage(struct page *page) -{ - pte_t *ptep; - - if (MACHINE_HAS_HPAGE) - return; - - ptep = (pte_t *) page[1].index; - if (!ptep) - return; - clear_table((unsigned long *) ptep, _PAGE_INVALID, - PTRS_PER_PTE * sizeof(pte_t)); - page_table_free(&init_mm, (unsigned long *) ptep); - page[1].index = 0; -} - pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz) { @@ -195,10 +141,7 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) int pmd_huge(pmd_t pmd) { - if (!MACHINE_HAS_HPAGE) - return 0; - - return !!(pmd_val(pmd) & _SEGMENT_ENTRY_LARGE); + return pmd_large(pmd); } int pud_huge(pud_t pud) diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index b33f66110ca9..33082d0d101b 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -31,6 +31,8 @@ #define ALLOC_ORDER 2 #define FRAG_MASK 0x03 +int HPAGE_SHIFT; + unsigned long *crst_table_alloc(struct mm_struct *mm) { struct page *page = alloc_pages(GFP_KERNEL, ALLOC_ORDER); |