From edb5ff07ef67962b81ea7abb716a74ef0a491ca1 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 2 Aug 2019 14:24:06 +0200 Subject: [PATCH] drm/etnaviv: skip command stream validation on PPAS capable GPUs MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Philipp Zabel Reviewed-by: Guido Günther --- drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 16e7d371a7ef..63a1206492d2 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -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; -- 2.30.2