From: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Date: Mon, 14 Jan 2008 21:16:50 +0000 (+0100)
Subject: avr32: Remove useless zeroing of swapper_pg_dir at startup
X-Git-Tag: v2.6.27-rc1~1108^2~13
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebe74597a55fef00edc80a414ef5c6477d035e0a;p=linux-2.6

avr32: Remove useless zeroing of swapper_pg_dir at startup

swapper_pg_dir is stored in .bss, so it must already be zeroed out
when we get there.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
---

diff --git a/arch/avr32/mm/init.c b/arch/avr32/mm/init.c
index 5ee1e407dc..0e77578c35 100644
--- a/arch/avr32/mm/init.c
+++ b/arch/avr32/mm/init.c
@@ -108,19 +108,9 @@ void __init paging_init(void)
 	zero_page = alloc_bootmem_low_pages_node(NODE_DATA(0),
 						 PAGE_SIZE);
 
-	{
-		pgd_t *pg_dir;
-		int i;
-
-		pg_dir = swapper_pg_dir;
-		sysreg_write(PTBR, (unsigned long)pg_dir);
-
-		for (i = 0; i < PTRS_PER_PGD; i++)
-			pgd_val(pg_dir[i]) = 0;
-
-		enable_mmu();
-		printk ("CPU: Paging enabled\n");
-	}
+	sysreg_write(PTBR, (unsigned long)swapper_pg_dir);
+	enable_mmu();
+	printk ("CPU: Paging enabled\n");
 
 	for_each_online_node(nid) {
 		pg_data_t *pgdat = NODE_DATA(nid);