diff options
Diffstat (limited to 'arch/microblaze/mm/pgtable.c')
| -rw-r--r-- | arch/microblaze/mm/pgtable.c | 46 |
1 files changed, 25 insertions, 21 deletions
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c index 4c0599239915..e96dd1b7aba4 100644 --- a/arch/microblaze/mm/pgtable.c +++ b/arch/microblaze/mm/pgtable.c @@ -32,8 +32,10 @@ #include <linux/vmalloc.h> #include <linux/init.h> #include <linux/mm_types.h> +#include <linux/pgtable.h> +#include <linux/memblock.h> +#include <linux/kallsyms.h> -#include <asm/pgtable.h> #include <asm/pgalloc.h> #include <linux/io.h> #include <asm/mmu.h> @@ -44,10 +46,6 @@ unsigned long ioremap_base; unsigned long ioremap_bot; EXPORT_SYMBOL(ioremap_bot); -#ifndef CONFIG_SMP -struct pgtable_cache_struct quicklists; -#endif - static void __iomem *__ioremap(phys_addr_t addr, unsigned long size, unsigned long flags) { @@ -75,7 +73,7 @@ static void __iomem *__ioremap(phys_addr_t addr, unsigned long size, p >= memory_start && p < virt_to_phys(high_memory) && !(p >= __virt_to_phys((phys_addr_t)__bss_stop) && p < __virt_to_phys((phys_addr_t)__bss_stop))) { - pr_warn("__ioremap(): phys addr "PTE_FMT" is RAM lr %pf\n", + pr_warn("__ioremap(): phys addr "PTE_FMT" is RAM lr %ps\n", (unsigned long)p, __builtin_return_address(0)); return NULL; } @@ -127,7 +125,7 @@ void __iomem *ioremap(phys_addr_t addr, unsigned long size) } EXPORT_SYMBOL(ioremap); -void iounmap(void __iomem *addr) +void iounmap(volatile void __iomem *addr) { if ((__force void *)addr > high_memory && (unsigned long) addr < ioremap_bot) @@ -138,11 +136,16 @@ EXPORT_SYMBOL(iounmap); int map_page(unsigned long va, phys_addr_t pa, int flags) { + p4d_t *p4d; + pud_t *pud; pmd_t *pd; pte_t *pg; int err = -ENOMEM; + /* Use upper 10 bits of VA to index the first level map */ - pd = pmd_offset(pgd_offset_k(va), va); + p4d = p4d_offset(pgd_offset_k(va), va); + pud = pud_offset(p4d, va); + pd = pmd_offset(pud, va); /* Use middle 10 bits of VA to index the second-level map */ pg = pte_alloc_kernel(pd, va); /* from powerpc - pgtable.c */ /* pg = pte_alloc_kernel(&init_mm, pd, va); */ @@ -169,7 +172,7 @@ void __init mapin_ram(void) for (s = 0; s < lowmem_size; s += PAGE_SIZE) { f = _PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_SHARED | _PAGE_HWEXEC; - if ((char *) v < _stext || (char *) v >= _etext) + if (!is_kernel_text(v)) f |= _PAGE_WRENABLE; else /* On the MicroBlaze, no user access @@ -192,13 +195,17 @@ void __init mapin_ram(void) static int get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep) { pgd_t *pgd; + p4d_t *p4d; + pud_t *pud; pmd_t *pmd; pte_t *pte; int retval = 0; pgd = pgd_offset(mm, addr & PAGE_MASK); if (pgd) { - pmd = pmd_offset(pgd, addr & PAGE_MASK); + p4d = p4d_offset(pgd, addr & PAGE_MASK); + pud = pud_offset(p4d, addr & PAGE_MASK); + pmd = pmd_offset(pud, addr & PAGE_MASK); if (pmd_present(*pmd)) { pte = pte_offset_kernel(pmd, addr & PAGE_MASK); if (pte) { @@ -235,18 +242,15 @@ unsigned long iopa(unsigned long addr) return pa; } -__ref pte_t *pte_alloc_one_kernel(struct mm_struct *mm, - unsigned long address) +__ref pte_t *pte_alloc_one_kernel(struct mm_struct *mm) { - pte_t *pte; - if (mem_init_done) { - pte = (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO); - } else { - pte = (pte_t *)early_get_page(); - if (pte) - clear_page(pte); - } - return pte; + if (mem_init_done) + return __pte_alloc_one_kernel(mm); + else + return memblock_alloc_try_nid(PAGE_SIZE, PAGE_SIZE, + MEMBLOCK_LOW_LIMIT, + memory_start + kernel_tlb, + NUMA_NO_NODE); } void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t flags) |