From: Zhenyu Wang Date: Mon, 13 Feb 2017 09:07:19 +0000 (+0800) Subject: drm/i915/gvt: Fix shadow context descriptor X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=03806edc3582392727a6dc617662ac57e6b24b01;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915/gvt: Fix shadow context descriptor We need to be careful to only update addr mode for gvt shadow context descriptor but keep other valid config. This fixes GPU hang caused by invalid descriptor submitted for gvt workload. Signed-off-by: Zhenyu Wang --- diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index 3fbcd9db65b9..d6b6d0efdd1a 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -169,7 +169,8 @@ static int dispatch_workload(struct intel_vgpu_workload *workload) gvt_dbg_sched("ring id %d prepare to dispatch workload %p\n", ring_id, workload); - shadow_ctx->desc_template = workload->ctx_desc.addressing_mode << + shadow_ctx->desc_template &= ~(0x3 << GEN8_CTX_ADDRESSING_MODE_SHIFT); + shadow_ctx->desc_template |= workload->ctx_desc.addressing_mode << GEN8_CTX_ADDRESSING_MODE_SHIFT; mutex_lock(&dev_priv->drm.struct_mutex);