linux-kernel - [PATCH 14/15] x86-64: Calgary - only reserve the first 1MB of IO space for CalIOC2

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Date:	Tue, 22 May 2007 04:06:03 -0400
From:	muli@...ibm.com
To:	ak@...e.de
Cc:	linux-kernel@...r.kernel.org, discuss@...-64.org, jdmason@...zu.us,
	michaelv@...ibm.com, guillaume.thouvenin@....bull.net,
	muli@...ibm.com
Subject: [PATCH 14/15] x86-64: Calgary - only reserve the first 1MB of IO space for CalIOC2

From: Muli Ben-Yehuda <muli@...ibm.com>

Signed-off-by: Muli Ben-Yehuda <muli@...ibm.com>
---
 arch/x86_64/kernel/pci-calgary.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c
index 0bb0eb0..1df556c 100644
--- a/arch/x86_64/kernel/pci-calgary.c
+++ b/arch/x86_64/kernel/pci-calgary.c
@@ -808,13 +808,13 @@ static void __init calgary_reserve_regio
 	iommu_range_reserve(tbl, bad_dma_address, EMERGENCY_PAGES);
 
 	/* avoid the BIOS/VGA first 640KB-1MB region */
-	/* for CalIOC2 - avoid the entire first 2MB */
+	/* for CalIOC2 - avoid the entire first MB */
 	if (is_calgary(dev->device)) {
 		start = (640 * 1024);
 		npages = ((1024 - 640) * 1024) >> PAGE_SHIFT;
 	} else { /* calioc2 */
 		start = 0;
-		npages = (2 * 1024 * 1024) >> PAGE_SHIFT;
+		npages = (1 * 1024 * 1024) >> PAGE_SHIFT;
 	}
 	iommu_range_reserve(tbl, start, npages);
 
-- 
1.4.4

-
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