Commit edb5ff07 authored Aug 02, 2019 by Lucas Stach

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>

parent 17e4660a

drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;

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