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[217.140.110.172]) by mx.google.com with ESMTP id e1si2862719ejb.15.2019.06.26.10.18.26 for ; Wed, 26 Jun 2019 10:18:27 -0700 (PDT) Received-SPF: pass (google.com: domain of catalin.marinas@arm.com designates 217.140.110.172 as permitted sender) client-ip=217.140.110.172; Authentication-Results: mx.google.com; spf=pass (google.com: domain of catalin.marinas@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=catalin.marinas@arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3BC85360; Wed, 26 Jun 2019 10:18:26 -0700 (PDT) Received: from arrakis.emea.arm.com (arrakis.cambridge.arm.com [10.1.196.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 876353F718; Wed, 26 Jun 2019 10:18:21 -0700 (PDT) Date: Wed, 26 Jun 2019 18:18:19 +0100 From: Catalin Marinas To: Andrew Morton Cc: Andrey Konovalov , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, Vincenzo Frascino , Will Deacon , Mark Rutland , Greg Kroah-Hartman , Kees Cook , Yishai Hadas , Felix Kuehling , Alexander Deucher , Christian Koenig , Mauro Carvalho Chehab , Jens Wiklander , Alex Williamson , Leon Romanovsky , Luc Van Oostenryck , Dave Martin , Khalid Aziz , enh , Jason Gunthorpe , Christoph Hellwig , Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Robin Murphy , Kevin Brodsky , Szabolcs Nagy Subject: Re: [PATCH v18 00/15] arm64: untag user pointers passed to the kernel Message-ID: <20190626171819.GG29672@arrakis.emea.arm.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Andrew, On Mon, Jun 24, 2019 at 04:32:45PM +0200, Andrey Konovalov wrote: > Andrey Konovalov (14): > arm64: untag user pointers in access_ok and __uaccess_mask_ptr > lib: untag user pointers in strn*_user > mm: untag user pointers passed to memory syscalls > mm: untag user pointers in mm/gup.c > mm: untag user pointers in get_vaddr_frames > fs/namespace: untag user pointers in copy_mount_options > userfaultfd: untag user pointers > drm/amdgpu: untag user pointers > drm/radeon: untag user pointers in radeon_gem_userptr_ioctl > IB/mlx4: untag user pointers in mlx4_get_umem_mr > media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get > tee/shm: untag user pointers in tee_shm_register > vfio/type1: untag user pointers in vaddr_get_pfn > selftests, arm64: add a selftest for passing tagged pointers to kernel > > Catalin Marinas (1): > arm64: Introduce prctl() options to control the tagged user addresses > ABI > > arch/arm64/Kconfig | 9 +++ > arch/arm64/include/asm/processor.h | 8 +++ > arch/arm64/include/asm/thread_info.h | 1 + > arch/arm64/include/asm/uaccess.h | 12 +++- > arch/arm64/kernel/process.c | 72 +++++++++++++++++++ > .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 +- > drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 2 + > drivers/gpu/drm/radeon/radeon_gem.c | 2 + > drivers/infiniband/hw/mlx4/mr.c | 7 +- > drivers/media/v4l2-core/videobuf-dma-contig.c | 9 +-- > drivers/tee/tee_shm.c | 1 + > drivers/vfio/vfio_iommu_type1.c | 2 + > fs/namespace.c | 2 +- > fs/userfaultfd.c | 22 +++--- > include/uapi/linux/prctl.h | 5 ++ > kernel/sys.c | 12 ++++ > lib/strncpy_from_user.c | 3 +- > lib/strnlen_user.c | 3 +- > mm/frame_vector.c | 2 + > mm/gup.c | 4 ++ > mm/madvise.c | 2 + > mm/mempolicy.c | 3 + > mm/migrate.c | 2 +- > mm/mincore.c | 2 + > mm/mlock.c | 4 ++ > mm/mprotect.c | 2 + > mm/mremap.c | 7 ++ > mm/msync.c | 2 + > tools/testing/selftests/arm64/.gitignore | 1 + > tools/testing/selftests/arm64/Makefile | 11 +++ > .../testing/selftests/arm64/run_tags_test.sh | 12 ++++ > tools/testing/selftests/arm64/tags_test.c | 29 ++++++++ > 32 files changed, 232 insertions(+), 25 deletions(-) It looks like we got to an agreement on how to deal with tagged user addresses between SPARC ADI and ARM Memory Tagging. If there are no other objections, what's your preferred way of getting this series into -next first and then mainline? Are you ok to merge them into the mm tree? Thanks. -- Catalin