Try to keep highmem support in a more central place.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
/* declarations for highmem.c */
extern unsigned long highstart_pfn, highend_pfn;
-extern pte_t *kmap_pte;
extern pgprot_t kmap_prot;
extern pte_t *pkmap_page_table;
#include <asm/pgalloc.h>
#include <asm/vaddrs.h>
+pgprot_t kmap_prot;
+
+static pte_t *kmap_pte;
+
+void __init kmap_init(void)
+{
+ unsigned long address;
+ pmd_t *dir;
+
+ address = __fix_to_virt(FIX_KMAP_BEGIN);
+ dir = pmd_offset(pgd_offset_k(address), address);
+
+ /* cache the first kmap pte */
+ kmap_pte = pte_offset_kernel(dir, address);
+ kmap_prot = __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE);
+}
+
void *kmap_atomic(struct page *page)
{
unsigned long vaddr;
unsigned long highstart_pfn, highend_pfn;
-pte_t *kmap_pte;
-pgprot_t kmap_prot;
-
-#define kmap_get_fixmap_pte(vaddr) \
- pte_offset_kernel(pmd_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr))
-
-void __init kmap_init(void)
-{
- /* cache the first kmap pte */
- kmap_pte = kmap_get_fixmap_pte(__fix_to_virt(FIX_KMAP_BEGIN));
- kmap_prot = __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE);
-}
-
void show_mem(unsigned int filter)
{
printk("Mem-info:\n");