[PATCH kernel v2 0/2] KVM: PPC: Check if IOMMU page is contained in the pinned physical page

[Alexey Kardashevskiy]

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