On 9/2/20 12:16 AM, Nicolin Chen wrote: > These two patches are to update default segment_boundary_mask. > > PATCH-1 fixes overflow issues in callers of dma_get_seg_boundary. > Previous version was a series: https://lkml.org/lkml/2020/8/31/1026 > > Then PATCH-2 sets default segment_boundary_mask to ULONG_MAX. > > Nicolin Chen (2): > dma-mapping: introduce dma_get_seg_boundary_nr_pages() > dma-mapping: set default segment_boundary_mask to ULONG_MAX I gave both of your patches a quick test ride on a couple of dev mainframes, both NVMe, ConnectX and virtio-pci devices all seems to work fine. I already commented on Christoph's mail that I like the helper approach, so as for s390 you can add my Acked-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx> > > arch/alpha/kernel/pci_iommu.c | 7 +------ > arch/ia64/hp/common/sba_iommu.c | 3 +-- > arch/powerpc/kernel/iommu.c | 9 ++------- > arch/s390/pci/pci_dma.c | 6 ++---- > arch/sparc/kernel/iommu-common.c | 10 +++------- > arch/sparc/kernel/iommu.c | 3 +-- > arch/sparc/kernel/pci_sun4v.c | 3 +-- > arch/x86/kernel/amd_gart_64.c | 3 +-- > drivers/parisc/ccio-dma.c | 3 +-- > drivers/parisc/sba_iommu.c | 3 +-- > include/linux/dma-mapping.h | 21 ++++++++++++++++++++- > 11 files changed, 34 insertions(+), 37 deletions(-) >
