From 8207c2570af6f819b61be9ef3fb298d0a8c0e18c Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Tue, 24 Jun 2008 17:32:48 -0400
Subject: [PATCH] x86: fix pte allocation in "x86: introduce
init_memory_mapping for 32bit"
The patch "x86: introduce init_memory_mapping for 32bit" does not allocate
enough space for PTEs if the CPU does not implement PSE.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/mm/init_32.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index c059c460e32d7..156000de6e627 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -733,6 +733,11 @@ static void __init find_early_table_space(unsigned long end)
pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
tables += PAGE_ALIGN(pmds * sizeof(pmd_t));
+ if (!cpu_has_pse) {
+ int ptes = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ tables += PAGE_ALIGN(ptes * sizeof(pte_t));
+ }
+
/*
* RED-PEN putting page tables only on node 0 could
* cause a hotspot and fill up ZONE_DMA. The page tables
--
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