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Vulkan doesn't copy data from system RAM to VRAM after resume from suspend

Description

Very low Vulkan (Mesa and AMDVLK) performance on Radeon RX 6900 XT (and RX 6700 XT) after resume from suspend when PC is suspender/resumed with running Vulkan application. After resume, the Vulkan data is not copied back to VRAM. GPU uses system RAM to access the data. The problem doesn't happen with OpenGL.

Original report: mesa/mesa#8676 (closed)

Steps to reproduce

  • run Vulkan application (e.g. demanding game)
  • suspend the PC
  • resume from suspend
  • very low GPU performance in game and entire system