Messages in this thread | | | Subject | Re: [PATCH 2.4.30-pre3] x86_64: pci_alloc_consistent() match 2.6 implementation | From | Arjan van de Ven <> | Date | Sat, 19 Mar 2005 07:09:45 +0100 |
| |
On Fri, 2005-03-18 at 15:23 -0600, Matt Domsch wrote: > For review and comment. > > On x86_64 systems with no IOMMU and with >4GB RAM (in fact, whenever > there are any pages mapped above 4GB), pci_alloc_consistent() falls > back to using ZONE_DMA for all allocations, even if the device's > dma_mask could have supported using memory from other zones. Problems > can be seen when other ZONE_DMA users (SWIOTLB, scsi_malloc()) consume > all of ZONE_DMA, leaving none left for pci_alloc_consistent() use.
scsi_malloc no longer uses ZONE_DMA nowadays....
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |