Hi,
On Jul 4, 2008, at 7:54 AM, Robert Jennings wrote:
To support Cooperative Memory Overcommitment (CMO), we need to check
for failure from some of the tce hcalls.
These changes for the pseries platform affect the powerpc
architecture;
patches for the other affected platforms are included in this patch.
pSeries platform IOMMU code changes:
* platform TCE functions must handle H_NOT_ENOUGH_RESOURCES errors and
return an error.
Architecture IOMMU code changes:
* Calls to ppc_md.tce_build need to check return values and return
DMA_MAPPING_ERROR for transient errors.
Architecture changes:
* struct machdep_calls for tce_build*_pSeriesLP functions need to
change
to indicate failure.
* all other platforms will need updates to iommu functions to match
the new
calling semantics; they will return 0 on success. The other
platforms
default configs have been built, but no further testing was
performed.
Signed-off-by: Robert Jennings <[EMAIL PROTECTED]>
Acked-by: Olof Johansson <[EMAIL PROTECTED]>
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