From: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Thierry Reding
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Mikko Perttunen <cyndis-/1wQRMveznE@public.gmane.org>
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
DRI Development
<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
Erik Faye-Lund
<kusmabite-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [PATCH] gpu: host1x: Forbid RESTART opcode in the firewall
Date: Mon, 15 May 2017 15:02:15 +0300 [thread overview]
Message-ID: <20170515120215.28273-1-digetx@gmail.com> (raw)
The RESTART opcode terminates the gather and restarts the CDMA fetch from
a specified word << 2 relative to the CDMA start address. That shouldn't
be allowed to be done by userspace.
Signed-off-by: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
drivers/gpu/host1x/job.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
index 8f0d43b8f9a6..d648748b3e74 100644
--- a/drivers/gpu/host1x/job.c
+++ b/drivers/gpu/host1x/job.c
@@ -493,7 +493,6 @@ static int validate(struct host1x_firewall *fw, struct host1x_job_gather *g)
goto out;
break;
case 4:
- case 5:
case 14:
break;
default:
--
2.13.0
next reply other threads:[~2017-05-15 12:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-15 12:02 Dmitry Osipenko [this message]
2017-05-15 12:06 ` [PATCH] gpu: host1x: Forbid RESTART opcode in the firewall Erik Faye-Lund
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