On Tue, Jun 11, 2019 at 10:58:23AM -0700, Florian Fainelli wrote: > Hi Christoph,
I pulled the patches in my tree. > > Still with my contrived memory layout where there is no physical memory > the kernel can use below 4GB, it was possible to fail swiotlb_init(), > but still not hit swiotlb_map_single() since all peripherals have a > DMA_BIT_MASK() that is within the remaining addressable physical memory. > > The second path could be backported to stable, but for the same reasons > as the one we had just discussed before, this requires a very contrived > test case that is not necessarily realistic or would warrant a stable > backport IMHO. > > Thanks! > > Florian Fainelli (2): > swiotlb: Group identical cleanup in swiotlb_cleanup() > swiotlb: Return consistent SWIOTLB segments/nr_tbl > > kernel/dma/swiotlb.c | 26 ++++++++++++++------------ > 1 file changed, 14 insertions(+), 12 deletions(-) > > -- > 2.17.1 > _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
