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x86_64: only reserve the first 1MB of IO space for CalIOC2

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Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Muli Ben-Yehuda 2007-07-21 17:11:01 +02:00 • committed by Linus Torvalds
parent 8bcf77055c
commit e8f2041471
1 changed files with 2 additions and 2 deletions
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4
arch/x86_64/kernel/pci-calgary.c
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@ -806,13 +806,13 @@ static void __init calgary_reserve_regions(struct pci_dev *dev)
iommu_range_reserve(tbl, bad_dma_address, EMERGENCY_PAGES); iommu_range_reserve(tbl, bad_dma_address, EMERGENCY_PAGES);
/* avoid the BIOS/VGA first 640KB-1MB region */ /* 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)) { if (is_calgary(dev->device)) {
start = (640 * 1024); start = (640 * 1024);
npages = ((1024 - 640) * 1024) >> PAGE_SHIFT; npages = ((1024 - 640) * 1024) >> PAGE_SHIFT;
} else { /* calioc2 */ } else { /* calioc2 */
start = 0; start = 0;
npages = (2 * 1024 * 1024) >> PAGE_SHIFT; npages = (1 * 1024 * 1024) >> PAGE_SHIFT;
} }
iommu_range_reserve(tbl, start, npages); iommu_range_reserve(tbl, start, npages);