On Mon, Mar 16, 2020 at 9:38 PM David Christensen <d...@linux.vnet.ibm.com> wrote: > > All recent POWER systems, Power 8 and 9 specifically, support an IOMMU > (it can't be disabled). The functionality of the IOMMU is different > depending on whether it's running on a bare metal PowerNV system or in > a virtual environment (PowerVM LPAR or KVM/QEMU). DPDK currently > supports the IOMMU found on PowerNV platforms, sPAPRv2, so IOVA=VA > mode can be enabled when the correct platform is detected. > > The POWER IOMMU type can't be detected through mechansims such as
mechanisms > parsing files in the /sys heirarchy like x86_64 systems so the hierarchy > /proc/cpuinfo file is parsed to determine whether Linux is running > on bare metal (i.e. PowerNV) or in a virtual environment (KVM/QEMU). > > Signed-off-by: David Christensen <d...@linux.vnet.ibm.com> Applied, thanks. -- David Marchand
