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| author | Dmitry Osipenko <[email protected]> | 2017-06-14 23:18:37 +0000 |
|---|---|---|
| committer | Thierry Reding <[email protected]> | 2017-06-15 12:23:50 +0000 |
| commit | 0f563a4bf66e5182f0882efee398f7e6bc0bb1be (patch) | |
| tree | 3197816e7ddebd5d8360c6aae439d20a956b6a95 /drivers/gpu/host1x/debug.c | |
| parent | gpu: host1x: Forbid RESTART opcode in the firewall (diff) | |
| download | kernel-0f563a4bf66e5182f0882efee398f7e6bc0bb1be.tar.gz kernel-0f563a4bf66e5182f0882efee398f7e6bc0bb1be.zip | |
gpu: host1x: Forbid unrelated SETCLASS opcode in the firewall
Several channels could be made to write the same unit concurrently via
the SETCLASS opcode, trusting userspace is a bad idea. It should be
possible to drop the per-client channel reservation and add a per-unit
locking by inserting MLOCK's to the command stream to re-allow the
SETCLASS opcode, but it will be much more work. Let's forbid the
unit-unrelated class changes for now.
Signed-off-by: Dmitry Osipenko <[email protected]>
Reviewed-by: Erik Faye-Lund <[email protected]>
Reviewed-by: Mikko Perttunen <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
Diffstat (limited to 'drivers/gpu/host1x/debug.c')
0 files changed, 0 insertions, 0 deletions