diff options
| author | Jon Mason <jdmason@us.ibm.com> | 2006-02-03 21:51:59 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-04 16:43:15 -0800 |
| commit | 5b7b644ca9a12396a46fad825a973fb8bed17102 (patch) | |
| tree | 39d6a2b1644e4c5ab17da7e82a09f37a65211b23 /arch/x86_64/kernel/pci-gart.c | |
| parent | 14c3f8558717adb192c364f58b0d63dfc850ecca (diff) | |
[PATCH] x86_64: IOMMU printk cleanup
This patch contains a printk reorder to remove the current problem of
displaying "PCI-DMA: Disabling IOMMU." and then "PCI-DMA: using GART
IOMMU" 20 lines later in dmesg.
It also constains a printk reorder in swiotlb to state swiotlb
enablement prior to describing the location of the bounce buffers, and a
printk reorder to state gart enablement prior to describing the
aperature.
Also constains a whitespace cleanup in arch/x86_64/kernel/setup.c
Tested (along with patch 2/2) on dual opteron with gart enabled,
iommu=soft, and iommu=off.
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/pci-gart.c')
| -rw-r--r-- | arch/x86_64/kernel/pci-gart.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c index 9188b25fad2a..2fe23a6c361b 100644 --- a/arch/x86_64/kernel/pci-gart.c +++ b/arch/x86_64/kernel/pci-gart.c @@ -645,9 +645,18 @@ static int __init pci_iommu_init(void) (no_agp && init_k8_gatt(&info) < 0)) { no_iommu = 1; no_iommu_init(); + printk(KERN_INFO "PCI-DMA: Disabling IOMMU.\n"); + if (end_pfn > MAX_DMA32_PFN) { + printk(KERN_ERR "WARNING more than 4GB of memory " + "but IOMMU not compiled in.\n" + KERN_ERR "WARNING 32bit PCI may malfunction.\n" + KERN_ERR "You might want to enable " + "CONFIG_GART_IOMMU\n"); + } return -1; } + printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n"); aper_size = info.aper_size * 1024 * 1024; iommu_size = check_iommu_size(info.aper_base, aper_size); iommu_pages = iommu_size >> PAGE_SHIFT; @@ -721,7 +730,6 @@ static int __init pci_iommu_init(void) flush_gart(NULL); - printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n"); dma_ops = &gart_dma_ops; return 0; |