This is to improve page boundaries checking and should probably be cc:stable. I came accross this while debugging nvlink2 passthrough but the lack of checking might be exploited by the existing userspace. Changes: v2: * 2/2: explicitly check for compound pages before calling compound_order() Please comment. Thanks. Alexey Kardashevskiy (2): vfio/spapr: Use IOMMU pageshift rather than pagesize KVM: PPC: Check if IOMMU page is contained in the pinned physical page arch/powerpc/include/asm/mmu_context.h | 4 ++-- arch/powerpc/kvm/book3s_64_vio.c | 2 +- arch/powerpc/kvm/book3s_64_vio_hv.c | 6 ++++-- arch/powerpc/mm/mmu_context_iommu.c | 20 +++++++++++++++++--- drivers/vfio/vfio_iommu_spapr_tce.c | 10 +++++----- 5 files changed, 29 insertions(+), 13 deletions(-) -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
