Patch 1 removes an unneeded alignment requirement, which resulted in exhausting the SWIOTLB with normal use cases.
Patch 2 is an optimization to avoid destroying a contiguous region without any need to do so. There will be probably another patch following to allow larger contiguous regions to be created, but this one isn't ready yet. Juergen Gross (2): xen/swiotlb: relax alignment requirements xen/swiotlb: don't destroy contiguous region in all cases arch/x86/include/asm/xen/swiotlb-xen.h | 5 +++-- arch/x86/xen/mmu_pv.c | 18 ++++++++++----- drivers/xen/swiotlb-xen.c | 31 ++++++++++++++++---------- 3 files changed, 34 insertions(+), 20 deletions(-) -- 2.43.0
