1. 23 Oct, 2018 12 commits
  2. 22 Oct, 2018 21 commits
  3. 19 Oct, 2018 1 commit
    • Xiong Zhang's avatar
      drm/i915: Add ppgtt to GVT GEM context · 4f15665c
      Xiong Zhang authored
      Currently the guest couldn't boot up under GVT-g environment as the
      following call trace exists:
      [  272.504762] BUG: unable to handle kernel NULL pointer dereference at 0000000000000100
      [  272.504834] Call Trace:
      [  272.504852]  execlists_context_pin+0x2b2/0x520 [i915]
      [  272.504869]  intel_gvt_scan_and_shadow_workload+0x50/0x4d0 [i915]
      [  272.504887]  intel_vgpu_create_workload+0x3e2/0x570 [i915]
      [  272.504901]  intel_vgpu_submit_execlist+0xc0/0x2a0 [i915]
      [  272.504916]  elsp_mmio_write+0xc7/0x130 [i915]
      [  272.504930]  intel_vgpu_mmio_reg_rw+0x24a/0x4c0 [i915]
      [  272.504944]  intel_vgpu_emulate_mmio_write+0xac/0x240 [i915]
      [  272.504947]  intel_vgpu_rw+0x22d/0x270 [kvmgt]
      [  272.504949]  intel_vgpu_write+0x164/0x1f0 [kvmgt]
      
      GVT GEM context is created by i915_gem_context_create_gvt() which
      doesn't allocate ppgtt. So GVT GEM context structure doesn't have
      a valid i915_hw_ppgtt.
      
      This patch create ppgtt table at GVT GEM context creation, then assign
      shadow ppgtt's root table address to this ppgtt when shadow ppgtt will
      be used on GPU. So GVT GEM context has valid ppgtt address. But note
      that this ppgtt only contain valid ppgtt root table address, the table
      entry in this ppgtt structure are invalid.
      
      Fixes:4a3d3f67("drm/i915: Match code to comment and enforce ppgtt for execlists")
      Signed-off-by: default avatarXiong Zhang <xiong.y.zhang@intel.com>
      Reviewed-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Link: https://patchwork.freedesktop.org/patch/msgid/1539841231-3157-1-git-send-email-xiong.y.zhang@intel.com
      4f15665c
  4. 18 Oct, 2018 6 commits