On Wed, Oct 04, 2017 at 04:02:31AM +0300, Dmitry Osipenko wrote: > Due to a bug in IOVA allocator, page mapping could accidentally overwritten. > We can catch this case by checking 'VALID' bit of GART's page entry prior to > mapping of a page. Since that check introduces a noticeable performance > impact, it should be enabled explicitly by a new CONFIG_TEGRA_IOMMU_GART_DEBUG > option. Which bug in the IOVA allocator are you talking about? Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
