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drm/i915/gvt: filter cmds "lrr-src" and "lrr-dst" in cmd_handler
author
Yan Zhao
<yan.y.zhao@intel.com>
Wed, 23 Dec 2020 03:45:17 +0000
(11:45 +0800)
committer
Zhenyu Wang
<zhenyuw@linux.intel.com>
Fri, 25 Dec 2020 03:15:59 +0000
(11:15 +0800)
do not allow "lrr-src" and "lrr-dst"
Cc: Colin Xu <colin.xu@intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link:
http://patchwork.freedesktop.org/patch/msgid/20201223034517.17080-1-yan.y.zhao@intel.com
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drivers/gpu/drm/i915/gvt/cmd_parser.c
patch
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diff --git
a/drivers/gpu/drm/i915/gvt/cmd_parser.c
b/drivers/gpu/drm/i915/gvt/cmd_parser.c
index
7ee1016
..
be0a7d4
100644
(file)
--- a/
drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/
drivers/gpu/drm/i915/gvt/cmd_parser.c
@@
-993,6
+993,12
@@
static int cmd_reg_handler(struct parser_exec_state *s,
return 0;
}
+ if (!strncmp(cmd, "lrr-src", 7) ||
+ !strncmp(cmd, "lrr-dst", 7)) {
+ gvt_vgpu_err("not allowed cmd %s\n", cmd);
+ return -EPERM;
+ }
+
if (is_cmd_update_pdps(offset, s) &&
cmd_pdp_mmio_update_handler(s, offset, index))
return -EINVAL;