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| author |   Chuanxiao Dong <chuanxiao.dong@intel.com> | 2017-02-09 11:37:11 +0800 |
|---|---|---|
| committer |   Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-02-09 14:17:14 +0800 |
| commit | 5de6bd4c23babc6a00fcd7dc7c90705c9d0ec69e (patch) | |
| tree | 38740cfec8dd4e354f87e319e58275e81b3243f8 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | drm/i915/gvt: reduce the line of interrupt logs and log friendly (diff) | |
| download | wireguard-linux-5de6bd4c23babc6a00fcd7dc7c90705c9d0ec69e.tar.xz wireguard-linux-5de6bd4c23babc6a00fcd7dc7c90705c9d0ec69e.zip | |
drm/i915/gvt: Map shadow page before using it in shadow page table
MFN usually refers to "Machine Frame Number" in virtulization world.
Currently GVT-g populates the shadow PPGTT/GGTT page table with MFN
according to the translation between MFN and Guest PFN.
When host IOMMU is enabled, GPU DMA transactions go through the IOMMU,
GPU needs an IOVA<->MFN mapping to walk the shadow page table in host
main memory.
This patch will map a page in IOMMU page table before using it in shadow
page table and release the map when a shadow page is going to be freed.
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions