Re: [patch] 32-bit dma memory zone

[David S. Miller]

Richard Henderson writes:
 > On most alphas we use only one zone -- ZONE_DMA.  The iommu makes it
 > possible to do 32-bit pci to the entire memory space.
 > 
 > For those alphas without an iommu, we also set up ZONE_NORMAL.

And on sparc64 since all machines have an iommu, we use just ZONE_DMA
for everything.

Later,
David S. Miller
[e-mail]