From 8f63fc2bc64716c16e269ab951130eeda78fe37a Mon Sep 17 00:00:00 2001 From: Zhenyu Wang Date: Thu, 19 Oct 2017 13:54:06 +0800 Subject: drm/i915/gvt: properly check per_ctx bb valid state Need to check valid state for per_ctx bb and bypass batch buffer combine for scan if necessary. Otherwise adding invalid MI batch buffer start cmd for per_ctx bb will cause scan failure, which is taken as -EFAULT now so vGPU would be put in failsafe. This trys to fix that by checking per_ctx bb valid state. Also remove old invalid WARNING that indirect ctx bb shouldn't depend on valid per_ctx bb. Signed-off-by: Zhenyu Wang Signed-off-by: Zhi Wang --- drivers/gpu/drm/i915/gvt/cmd_parser.c | 3 +++ drivers/gpu/drm/i915/gvt/execlist.c | 3 +-- drivers/gpu/drm/i915/gvt/scheduler.h | 1 + 3 files changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm') diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index 21c36e2..d4726a3 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -2723,6 +2723,9 @@ static int combine_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx) uint32_t per_ctx_start[CACHELINE_DWORDS] = {0}; unsigned char *bb_start_sva; + if (!wa_ctx->per_ctx.valid) + return 0; + per_ctx_start[0] = 0x18800001; per_ctx_start[1] = wa_ctx->per_ctx.guest_gma; diff --git a/drivers/gpu/drm/i915/gvt/execlist.c b/drivers/gpu/drm/i915/gvt/execlist.c index 91b4300..e5320b4 100644 --- a/drivers/gpu/drm/i915/gvt/execlist.c +++ b/drivers/gpu/drm/i915/gvt/execlist.c @@ -701,8 +701,7 @@ static int submit_context(struct intel_vgpu *vgpu, int ring_id, CACHELINE_BYTES; workload->wa_ctx.per_ctx.guest_gma = per_ctx & PER_CTX_ADDR_MASK; - - WARN_ON(workload->wa_ctx.indirect_ctx.size && !(per_ctx & 0x1)); + workload->wa_ctx.per_ctx.valid = per_ctx & 1; } if (emulate_schedule_in) diff --git a/drivers/gpu/drm/i915/gvt/scheduler.h b/drivers/gpu/drm/i915/gvt/scheduler.h index 0d431a9..93a49eb 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.h +++ b/drivers/gpu/drm/i915/gvt/scheduler.h @@ -68,6 +68,7 @@ struct shadow_indirect_ctx { struct shadow_per_ctx { unsigned long guest_gma; unsigned long shadow_gma; + unsigned valid; }; struct intel_shadow_wa_ctx { -- cgit v1.1