From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Kardashevskiy Subject: [PATCH kernel 0/2] KVM: PPC: Check if IOMMU page is contained in the pinned physical page Date: Tue, 19 Jun 2018 18:44:12 +1000 Message-ID: <20180619084414.808-1-aik@ozlabs.ru> Cc: kvm@vger.kernel.org, Alexey Kardashevskiy , kvm-ppc@vger.kernel.org, Alex Williamson , David Gibson To: linuxppc-dev@lists.ozlabs.org Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+glppe-linuxppc-embedded-2=m.gmane.org@lists.ozlabs.org Sender: "Linuxppc-dev" List-Id: kvm.vger.kernel.org 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. 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 | 16 ++++++++++++++-- drivers/vfio/vfio_iommu_spapr_tce.c | 10 +++++----- 5 files changed, 26 insertions(+), 12 deletions(-) -- 2.11.0