On Thu, 11 Dec 2008, Kumar Gala wrote: > On Dec 11, 2008, at 6:04 AM, maillist.kernel wrote: >> In the system, the total PCI address needed is about 3GB, so I want to know >> how to support it in linux. mpc8548 has 36-bit real address, and can >> support 32GB PCIE address space, but in linux, there is only 1GB kernel >> space, how to map the 3GB pci address to kernel? Is the 36-bit real >> address only used to support large memory(>4GB) for muti-threads? > > The 36-bit support is current (in tree) in complete. Work is in progress to > add swiotlb support to PPC which will generically enable what you want to > accomplish.
Don't the ATMU windows in the pcie controller serve as a IOMMU, making swiotlb unnecessary and wasteful? _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
