[dpdk-dev] [kmods PATCH 0/3] windows/virt2phys: fix paging issue

[Ranjit Menon]

On 5/1/2021 10:18 AM, Dmitry Kozlyuk wrote:
> Physical addresses exposed by virt2phys driver could become pageable.
> This presents stability and security issues that prevent Microsoft
> from signing virt2phys, because a signed driver would be trusted
> by all end-user machines.
>
> Ensure that memory for which physical addresses are exposed by
> virt2phys is non-pageable at least for the lifetime of the process.
> As virt2phys code grows, make its development and debugging easier.
>
> There are other known issues that come from using PA and accessing DMA
> from userspace. They are not related to virt2phys par se. It is planned
> to address them later by enabling the use of IOMMU for DPDK on Windows.
>
> Dmitry Kozlyuk (3):
>    windows/virt2phys: use local time for signing
>    windows/virt2phys: do not expose pageable physical addresses
>    windows/virt2phys: add tracing
>
>   windows/virt2phys/virt2phys.c               |  89 ++++--
>   windows/virt2phys/virt2phys.vcxproj         |   8 +-
>   windows/virt2phys/virt2phys.vcxproj.filters |  11 +-
>   windows/virt2phys/virt2phys_logic.c         | 312 ++++++++++++++++++++
>   windows/virt2phys/virt2phys_logic.h         |  32 ++
>   windows/virt2phys/virt2phys_trace.h         |  49 +++
>   6 files changed, 472 insertions(+), 29 deletions(-)
>   create mode 100644 windows/virt2phys/virt2phys_logic.c
>   create mode 100644 windows/virt2phys/virt2phys_logic.h
>   create mode 100644 windows/virt2phys/virt2phys_trace.h

Acked-by: Ranjit Menon <ranjit.menon at intel.com>