In GVT-g, if GuC is to be used it is to be loaded by Host and not by VM/vGPU. Currently, GVT-g host is not supported with GuC submission. Also currently vGPU is to be not supported with GuC submission AFAIK. CI BAT highlighted GuC init issue on skl-gvtdvm due to lack of movntdqa needed for logging with below warning:
WARN_ON(!i915_memcpy_from_wc(((void *)0), ((void *)0), 0)) WARNING: CPU: 0 PID: 216 at drivers/gpu/drm/i915/intel_guc_log.c:383 This patch disables GuC when vGPU is active. Signed-off-by: Sagar Arun Kamble <[email protected]> Cc: Chris Wilson <[email protected]> Cc: Michal Wajdeczko <[email protected]> Cc: Joonas Lahtinen <[email protected]> Cc: Changbin Du <[email protected]> --- drivers/gpu/drm/i915/intel_uc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index d82ca0f..a836cf8 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -61,6 +61,8 @@ static int __get_platform_enable_guc(struct drm_i915_private *dev_priv) enable_guc |= ENABLE_GUC_LOAD_HUC; /* Any platform specific fine-tuning can be done here */ + if (intel_vgpu_active(dev_priv)) + enable_guc = 0; return enable_guc; } -- 1.9.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
