linux-kernel - [PATCH] Make x86 latest boot with non-discontig boxes

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Date:	Wed,  4 Jun 2008 01:08:27 -0300
From:	Glauber Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, tglx@...utronix.de, mingo@...e.hu,
	Yinghai Lu <yhlu.kernel@...il.com>
Subject: [PATCH] Make x86 latest boot with non-discontig boxes

Commit 0596152388e234efebce464355186ad9e16c8cb6
broke my box, since it removes completely the call to
memory_present() at e820 setup.

It seems to be really not needed with discontig memory,
but with flat and sparse, I get an early crash. The proposed patch
moves the call memory_present() to setup_memory, the one
present in setup_32.c.

Signed-off-by: Glauber Costa <gcosta@...hat.com>
CC: Yinghai Lu <yhlu.kernel@...il.com>
---
 arch/x86/kernel/setup_32.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 2901042..841eb2f 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -388,6 +388,8 @@ static unsigned long __init setup_memory(void)
 #ifdef CONFIG_FLATMEM
 	max_mapnr = num_physpages;
 #endif
+	memory_present(0, 0, max_pfn);
+
 	printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
 			pages_to_mb(max_low_pfn));
 
-- 
1.5.4.5

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