#include <asm/processor.h>
#include <asm/fixmap.h>
#include <linux/threads.h>
+#include <asm/paravirt.h>
#ifndef _I386_BITOPS_H
#include <asm/bitops.h>
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
extern unsigned long empty_zero_page[1024];
extern pgd_t swapper_pg_dir[1024];
-extern kmem_cache_t *pgd_cache;
-extern kmem_cache_t *pmd_cache;
+extern struct kmem_cache *pgd_cache;
+extern struct kmem_cache *pmd_cache;
extern spinlock_t pgd_lock;
extern struct page *pgd_list;
-void pmd_ctor(void *, kmem_cache_t *, unsigned long);
-void pgd_ctor(void *, kmem_cache_t *, unsigned long);
-void pgd_dtor(void *, kmem_cache_t *, unsigned long);
+void pmd_ctor(void *, struct kmem_cache *, unsigned long);
+void pgd_ctor(void *, struct kmem_cache *, unsigned long);
+void pgd_dtor(void *, struct kmem_cache *, unsigned long);
void pgtable_cache_init(void);
void paging_init(void);
extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
+#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD)
#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
+#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
# include <asm/pgtable-2level.h>
#endif
+#ifndef CONFIG_PARAVIRT
/*
* Rules for using pte_update - it must be called after any PTE update which
* has not been done using the set_pte / clear_pte interfaces. It is used by
*/
#define pte_update(mm, addr, ptep) do { } while (0)
#define pte_update_defer(mm, addr, ptep) do { } while (0)
+#endif
+
+/* local pte updates need not use xchg for locking */
+static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
+{
+ pte_t res = *ptep;
+ /* Pure native function needs no input for mm, addr */
+ native_pte_clear(NULL, 0, ptep);
+ return res;
+}
/*
* We only update the dirty/accessed state if we set
do { \
if (dirty) { \
(ptep)->pte_low = (entry).pte_low; \
- pte_update_defer((vma)->vm_mm, (addr), (ptep)); \
+ pte_update_defer((vma)->vm_mm, (address), (ptep)); \
flush_tlb_page(vma, address); \
} \
} while (0)
-/*
- * We don't actually have these, but we want to advertise them so that
- * we can encompass the flush here.
- */
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
+#define ptep_test_and_clear_dirty(vma, addr, ptep) ({ \
+ int ret = 0; \
+ if (pte_dirty(*ptep)) \
+ ret = test_and_clear_bit(_PAGE_BIT_DIRTY, &ptep->pte_low); \
+ if (ret) \
+ pte_update_defer(vma->vm_mm, addr, ptep); \
+ ret; \
+})
+
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+#define ptep_test_and_clear_young(vma, addr, ptep) ({ \
+ int ret = 0; \
+ if (pte_young(*ptep)) \
+ ret = test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte_low); \
+ if (ret) \
+ pte_update_defer(vma->vm_mm, addr, ptep); \
+ ret; \
+})
/*
* Rules for using ptep_establish: the pte MUST be a user pte, and
#define ptep_clear_flush_dirty(vma, address, ptep) \
({ \
int __dirty; \
- __dirty = pte_dirty(*(ptep)); \
- if (__dirty) { \
- clear_bit(_PAGE_BIT_DIRTY, &(ptep)->pte_low); \
- pte_update_defer((vma)->vm_mm, (addr), (ptep)); \
+ __dirty = ptep_test_and_clear_dirty((vma), (address), (ptep)); \
+ if (__dirty) \
flush_tlb_page(vma, address); \
- } \
__dirty; \
})
#define ptep_clear_flush_young(vma, address, ptep) \
({ \
int __young; \
- __young = pte_young(*(ptep)); \
- if (__young) { \
- clear_bit(_PAGE_BIT_ACCESSED, &(ptep)->pte_low); \
- pte_update_defer((vma)->vm_mm, (addr), (ptep)); \
+ __young = ptep_test_and_clear_young((vma), (address), (ptep)); \
+ if (__young) \
flush_tlb_page(vma, address); \
- } \
__young; \
})
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+ pte_t pte = native_ptep_get_and_clear(ptep);
+ pte_update(mm, addr, ptep);
+ return pte;
+}
+
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full)
{
pte_t pte;
if (full) {
- pte = *ptep;
- pte_clear(mm, addr, ptep);
+ /*
+ * Full address destruction in progress; paravirt does not
+ * care about updates and native needs no locking
+ */
+ pte = native_local_ptep_get_and_clear(ptep);
} else {
pte = ptep_get_and_clear(mm, addr, ptep);
}
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + pte_index(address))
+ ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE0) + pte_index(address))
#define pte_offset_map_nested(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + pte_index(address))
+ ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE1) + pte_index(address))
#define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
#else
* tables contain all the necessary information.
*/
#define update_mmu_cache(vma,address,pte) do { } while (0)
+
+void native_pagetable_setup_start(pgd_t *base);
+void native_pagetable_setup_done(pgd_t *base);
+
+#ifndef CONFIG_PARAVIRT
+static inline void paravirt_pagetable_setup_start(pgd_t *base)
+{
+ native_pagetable_setup_start(base);
+}
+
+static inline void paravirt_pagetable_setup_done(pgd_t *base)
+{
+ native_pagetable_setup_done(base);
+}
+#endif /* !CONFIG_PARAVIRT */
+
#endif /* !__ASSEMBLY__ */
#ifdef CONFIG_FLATMEM
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
remap_pfn_range(vma, vaddr, pfn, size, prot)
-#define MK_IOSPACE_PFN(space, pfn) (pfn)
-#define GET_IOSPACE(pfn) 0
-#define GET_PFN(pfn) (pfn)
-
#include <asm-generic/pgtable.h>
#endif /* _I386_PGTABLE_H */
projects / powerpc.git / blobdiff