On Thu, Jul 15, 2010 at 08:48:36PM -0400, Tim HRM wrote: > Interesting, since I seem to remember the MSM devices mostly conduct > IO through regions of normal RAM, largely accomplished through > ioremap() calls. > > Without more public domain documentation of the MSM chips and AMSS > interfaces I wouldn't know how to avoid this, but I can imagine it > creates a bit of urgency for Qualcomm developers as they attempt to > upstream support for this most interesting SoC.
As the patch has been out for RFC since early April on the linux-arm-kernel mailing list (Subject: [RFC] Prohibit ioremap() on kernel managed RAM), and no comments have come back from Qualcomm folk. The restriction on creation of multiple V:P mappings with differing attributes is also fairly hard to miss in the ARM architecture specification when reading the sections about caches. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
