If VT-d is active, the memory bandwidth usage of the display is 5% higher. Take this into account when determining whether we can support a display configuration.
Bspec: 64631 Cc: Matt Atwood <[email protected]> Signed-off-by: Matt Roper <[email protected]> --- drivers/gpu/drm/i915/display/intel_bw.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index 32522ec1ffb9..14cb3fbf0039 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -398,6 +398,9 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv, for_each_pipe(dev_priv, pipe) data_rate += bw_state->data_rate[pipe]; + if (HAS_DISPLAY13(dev_priv) && intel_vtd_active()) + data_rate = data_rate * 105 / 100; + return data_rate; } -- 2.25.4 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
