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| author | Zhenyu Wang <[email protected]> | 2017-10-19 05:54:06 +0000 |
|---|---|---|
| committer | Zhi Wang <[email protected]> | 2017-10-26 17:37:13 +0000 |
| commit | 8f63fc2bc64716c16e269ab951130eeda78fe37a (patch) | |
| tree | 00e99c32ef565e405c22d01d53b25201a9eed18f /drivers/gpu/drm/i915/gvt/cmd_parser.c | |
| parent | drm/i915/perf: fix perf enable/disable ioctls with 32bits userspace (diff) | |
| download | kernel-8f63fc2bc64716c16e269ab951130eeda78fe37a.tar.gz kernel-8f63fc2bc64716c16e269ab951130eeda78fe37a.zip | |
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 <[email protected]>
Signed-off-by: Zhi Wang <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/cmd_parser.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/cmd_parser.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index 21c36e256884..d4726a3358a4 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; |