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drm/etnaviv: skip command stream validation on PPAS capable GPUs 

With per-process address spaces in place, a rogue process submitting
bogus command streams can only hurt itself. There is no need to
validate the command stream before execution anymore.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
This commit is contained in:
Lucas Stach 2019-08-02 14:24:06 +02:00
parent 17e4660ae3
commit edb5ff07ef
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
View File

@ -517,7 +517,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
if (ret)
goto err_submit_objects;
if (!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
if ((priv->mmu_global->version != ETNAVIV_IOMMU_V2) &&
!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
relocs, args->nr_relocs)) {
ret = -EINVAL;
goto err_submit_objects;