openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86_64/kernel/pci-calgary.c
View File

@ -806,13 +806,13 @@ static void __init calgary_reserve_regions(struct pci_dev *dev)
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);