Re: Does kmalloc always return address below 4GB?

Adam J. Richter
2002-03-05T17:09:21Z

Steffen Persvold writes:
>I know pci_map_single (and _sg) will
>use bounce buffers on platforms without an IOMMU [...]

For a moment I thought that must be the point that I
was missing, but I don't see any such bounce buffer support
in linux-2.5.6-pre2/include/asm-i386/pci.h or arch/i386/kernel/pci-dma.c.
I do not see how this is currently implemented on x86 systems with >4GB
of RAM.

Or, by "will use" did you mean "will implement in the future?"

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