linux-kernel - [tip:x86/urgent] x86: Fix size for ex trampoline with 32bit

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Date:	Mon, 4 Jan 2010 21:42:40 GMT
From:	tip-bot for Yinghai Lu <yinghai@...nel.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	yinghai@...nel.org, tglx@...utronix.de
Subject: [tip:x86/urgent] x86: Fix size for ex trampoline with 32bit

Commit-ID:  9dad0fd5a73d4048dff18069733c0b515f68df74
Gitweb:     http://git.kernel.org/tip/9dad0fd5a73d4048dff18069733c0b515f68df74
Author:     Yinghai Lu <yinghai@...nel.org>
AuthorDate: Tue, 22 Dec 2009 15:40:39 -0800
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Mon, 4 Jan 2010 13:20:11 -0800

x86: Fix size for ex trampoline with 32bit

fix for error that is introduced by
| x86: Use find_e820() instead of hard coded trampoline address

it should end with PAGE_SIZE + PAGE_SIZE

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
LKML-Reference: <1261525263-13763-2-git-send-email-yinghai@...nel.org>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
---
 arch/x86/kernel/e820.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 05ed7ab..a1a7876 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -733,13 +733,13 @@ struct early_res {
 };
 static struct early_res early_res[MAX_EARLY_RES] __initdata = {
 	{ 0, PAGE_SIZE, "BIOS data page", 1 },	/* BIOS data page */
-#ifdef CONFIG_X86_32
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_TRAMPOLINE)
 	/*
 	 * But first pinch a few for the stack/trampoline stuff
 	 * FIXME: Don't need the extra page at 4K, but need to fix
 	 * trampoline before removing it. (see the GDT stuff)
 	 */
-	{ PAGE_SIZE, PAGE_SIZE, "EX TRAMPOLINE", 1 },
+	{ PAGE_SIZE, PAGE_SIZE + PAGE_SIZE, "EX TRAMPOLINE", 1 },
 #endif
 
 	{}
--
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