From da3b293ab432ffcb0a4384894803a0904ba9b801 Mon Sep 17 00:00:00 2001
From: Bahadir Balban <bbalban@b-labs.co.uk>
Date: Thu, 14 May 2009 10:57:31 +0300
Subject: [PATCH] Fixed a byte/pfn confusion. - During execve/map_stack when
 setting up the environment and argument stack,   the stack map size was in
 bytes instead of pfns. - Can now execve 16 forked tasks with success.

---
 tasks/mm0/src/memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tasks/mm0/src/memory.c b/tasks/mm0/src/memory.c
index f06e2ef..bdace97 100644
--- a/tasks/mm0/src/memory.c
+++ b/tasks/mm0/src/memory.c
@@ -199,7 +199,7 @@ void *pager_validate_map_user_range2(struct tcb *user, void *userptr,
 {
 	unsigned long start = page_align(userptr);
 	unsigned long end = page_align_up(userptr + size);
-	unsigned long npages = end - start;
+	unsigned long npages = __pfn(end - start);
 	void *virt, *virt_start;
 	void *mapped = 0;