From: Lucas Stach <l.stach@pengutronix.de>
To: etnaviv@lists.freedesktop.org
Cc: patchwork-lst@pengutronix.de, kernel@pengutronix.de,
dri-devel@lists.freedesktop.org,
Russell King <linux+etnaviv@armlinux.org.uk>
Subject: [PATCH 1/3] drm/etnaviv: skip command stream validation on PPAS capable GPUs
Date: Fri, 2 Aug 2019 19:29:51 +0200 [thread overview]
Message-ID: <20190802172953.4586-2-l.stach@pengutronix.de> (raw)
In-Reply-To: <20190802172953.4586-1-l.stach@pengutronix.de>
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>
---
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 27a14a270a55..627c80ed63d8 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;
--
2.20.1
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next prev parent reply other threads:[~2019-08-02 17:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 17:29 [PATCH 0/3] etnaviv softpin support Lucas Stach
2019-08-02 17:29 ` Lucas Stach [this message]
2019-08-05 8:20 ` [PATCH 1/3] drm/etnaviv: skip command stream validation on PPAS capable GPUs Philipp Zabel
2019-08-02 17:29 ` [PATCH 2/3] drm/etnaviv: allow to request specific virtual address for gem mapping Lucas Stach
2019-08-05 8:21 ` Philipp Zabel
2019-08-02 17:29 ` [PATCH 3/3] drm/etnaviv: implement softpin Lucas Stach
2019-08-05 8:58 ` Philipp Zabel
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