X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fum%2Fkernel%2Fskas%2Fmmu.c;h=c17eddcf89b3ce8ab627cbdad0f2574cdd3035cb;hb=038b0a6d8d32db934bba6a24e74e76e4e327a94f;hp=677871f1b37c65d2379cd4b4b3f58e2fc9aec067;hpb=407cf84f956ee4b52da5508d5357b8ae212ff77c;p=powerpc.git

diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index 677871f1b3..c17eddcf89 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -3,7 +3,6 @@
  * Licensed under the GPL
  */
 
-#include "linux/config.h"
 #include "linux/sched.h"
 #include "linux/list.h"
 #include "linux/spinlock.h"
@@ -55,14 +54,16 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
 	 * destroy_context_skas.
 	 */
 
-        mm->context.skas.last_page_table = pmd_page_kernel(*pmd);
+        mm->context.skas.last_page_table = pmd_page_vaddr(*pmd);
 #ifdef CONFIG_3_LEVEL_PGTABLES
         mm->context.skas.last_pmd = (unsigned long) __va(pud_val(*pud));
 #endif
 
 	*pte = mk_pte(virt_to_page(kernel), __pgprot(_PAGE_PRESENT));
-	*pte = pte_mkexec(*pte);
-	*pte = pte_wrprotect(*pte);
+	/* This is wrong for the code page, but it doesn't matter since the
+	 * stub is mapped by hand with the correct permissions.
+	 */
+	*pte = pte_mkwrite(*pte);
 	return(0);
 
  out_pmd:
@@ -78,7 +79,7 @@ int init_new_context_skas(struct task_struct *task, struct mm_struct *mm)
  	struct mmu_context_skas *from_mm = NULL;
 	struct mmu_context_skas *to_mm = &mm->context.skas;
 	unsigned long stack = 0;
-	int from_fd, ret = -ENOMEM;
+	int ret = -ENOMEM;
 
 	if(skas_needs_stub){
 		stack = get_zeroed_page(GFP_KERNEL);
@@ -108,11 +109,7 @@ int init_new_context_skas(struct task_struct *task, struct mm_struct *mm)
 		from_mm = &current->mm->context.skas;
 
 	if(proc_mm){
-		if(from_mm)
-			from_fd = from_mm->id.u.mm_fd;
-		else from_fd = -1;
-
-		ret = new_mm(from_fd, stack);
+		ret = new_mm(stack);
 		if(ret < 0){
 			printk("init_new_context_skas - new_mm failed, "
 			       "errno = %d\n", ret);
@@ -156,7 +153,7 @@ void destroy_context_skas(struct mm_struct *mm)
 		free_page(mmu->id.stack);
 		pte_lock_deinit(virt_to_page(mmu->last_page_table));
 		pte_free_kernel((pte_t *) mmu->last_page_table);
-                dec_page_state(nr_page_table_pages);
+		dec_zone_page_state(virt_to_page(mmu->last_page_table), NR_PAGETABLE);
 #ifdef CONFIG_3_LEVEL_PGTABLES
 		pmd_free((pmd_t *) mmu->last_pmd);
 #endif