[PATCH kernel v3 0/2] KVM: PPC: Check if IOMMU page is contained in the pinned physical page
Alexey Kardashevskiy
aik at ozlabs.ru
Wed Jul 4 15:00:50 AEST 2018
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:
v3:
* enforced huge pages not to cross preregistered chunk boundaries
v2:
* 2/2: explicitly check for compound pages before calling compound_order()
This is based on sha1
021c917 Linus Torvalds "Linux 4.18-rc3".
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 | 41 +++++++++++++++++++++++++++++++---
drivers/vfio/vfio_iommu_spapr_tce.c | 10 ++++-----
5 files changed, 50 insertions(+), 13 deletions(-)
--
2.11.0
More information about the Linuxppc-dev
mailing list