On Mon, Oct 11, 2010 at 6:54 PM, Guzman Lugo, Fernando <[email protected]> wrote: >> Once the iommu migration works (haven't managed to get it >> working myself), and it has been merged into mainline, then >> we can think about enabling it unconditionally. In the >> meantime, enabling unconditionally would break the >> tidspbridge that is in staging (mainline). > > What is the problem enabling unconditionally? > > The iva2 iommu does not start working until you call iommu_get. > So if for some reason you are using the dspbridge with custom > Iommu implementation it should not cause any collision with > Iommu module.
Read the code below (omap_iommu_init), the resources are registered so nobody else can use them. This caused problems multiple times inside Nokia, which is what motivated to write the patch in the first place[1]. [1] http://thread.gmane.org/gmane.linux.ports.arm.kernel/58302/focus=58305 -- Felipe Contreras -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
