UIO DMA to userspace question

From: Leon Woestenberg
Date: Sat Aug 07 2010 - 14:38:41 EST

Hello all,

can I use the UIO framework for the following?

The userspace portion of the driver allocates memory in user-space
using malloc() - usually resulting in a scatter pages in physical
The UIO kernel portion of the driver maps those using pci_map_sg().

Is this possible, or does the UIO framework assume memory for DMA is
allocated in kernel space?

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