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Pass-through PCI devices don't need vfio to do the iova mapping for their bars' memory, because when accessing their bars' memory, pass-through PCI devices' DMA requests don't travel to RC. Therefore, keeping the mapping relationship is useless. BUG=b:185084350 TEST=Boot a guest with a pass-through device Change-Id: I7944183553518437d03bdfcfebf3790268bbd9e4 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3284012 Reviewed-by: Xiong Y Zhang <xiong.y.zhang@intel.corp-partner.google.com> Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Tested-by: kokoro <noreply+kokoro@google.com> Commit-Queue: Daniel Verkamp <dverkamp@chromium.org> |
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