#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/sysctl.h>
+#include <linux/export.h>
#include <linux/ctype.h>
#include <linux/cache.h>
#include <linux/init.h>
int mmu_highuser_ssize = MMU_SEGSIZE_256M;
u16 mmu_slb_size = 64;
EXPORT_SYMBOL_GPL(mmu_slb_size);
-#ifdef CONFIG_HUGETLB_PAGE
-unsigned int HPAGE_SHIFT;
-#endif
#ifdef CONFIG_PPC_64K_PAGES
int mmu_ci_restrictions;
#endif
}
#ifdef CONFIG_MEMORY_HOTPLUG
-void create_section_mapping(unsigned long start, unsigned long end)
+int create_section_mapping(unsigned long start, unsigned long end)
{
- BUG_ON(htab_bolt_mapping(start, end, __pa(start),
+ return htab_bolt_mapping(start, end, __pa(start),
pgprot_val(PAGE_KERNEL), mmu_linear_psize,
- mmu_kernel_ssize));
+ mmu_kernel_ssize);
}
int remove_section_mapping(unsigned long start, unsigned long end)
}
EXPORT_SYMBOL_GPL(hash_page);
+#ifdef CONFIG_PPC_MM_SLICES
+static bool should_hash_preload(struct mm_struct *mm, unsigned long ea)
+{
+ /* We only prefault standard pages for now */
+ if (unlikely(get_slice_psize(mm, ea) != mm->context.user_psize))
+ return false;
+
+ return true;
+}
+#else
+static bool should_hash_preload(struct mm_struct *mm, unsigned long ea)
+{
+ return true;
+}
+#endif
+
void hash_preload(struct mm_struct *mm, unsigned long ea,
unsigned long access, unsigned long trap)
{
BUG_ON(REGION_ID(ea) != USER_REGION_ID);
-#ifdef CONFIG_PPC_MM_SLICES
- /* We only prefault standard pages for now */
- if (unlikely(get_slice_psize(mm, ea) != mm->context.user_psize))
+ if (!should_hash_preload(mm, ea))
return;
-#endif
DBG_LOW("hash_preload(mm=%p, mm->pgdir=%p, ea=%016lx, access=%lx,"
" trap=%lx\n", mm, mm->pgd, ea, access, trap);