diff options
Diffstat (limited to 'arch/x86/kernel/amd_gart_64.c')
| -rw-r--r-- | arch/x86/kernel/amd_gart_64.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index e66311200cbd..b574b295a2f9 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -768,10 +768,9 @@ int __init gart_iommu_init(void) aper_base = info.aper_base; end_pfn = (aper_base>>PAGE_SHIFT) + (aper_size>>PAGE_SHIFT); - if (end_pfn > max_low_pfn_mapped) { - start_pfn = (aper_base>>PAGE_SHIFT); + start_pfn = PFN_DOWN(aper_base); + if (!pfn_range_is_mapped(start_pfn, end_pfn)) init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT); - } pr_info("PCI-DMA: using GART IOMMU.\n"); iommu_size = check_iommu_size(info.aper_base, aper_size); |