diff options
| author |   Yan Zhao <yan.y.zhao@intel.com> | 2020-12-23 11:45:08 +0800 |
|---|---|---|
| committer |   Zhenyu Wang <zhenyuw@linux.intel.com> | 2020-12-25 11:15:53 +0800 |
| commit | f18d417a57438498e0de481d3a0bc900c2b0e057 (patch) | |
| tree | 3ef63068fd3cc959d09b47ee7a89a6840a9baede /drivers/gpu/drm/i915/gvt/cmd_parser.c | |
| parent | drm/i915/gvt: scan VM ctx pages (diff) | |
| download | wireguard-linux-f18d417a57438498e0de481d3a0bc900c2b0e057.tar.xz wireguard-linux-f18d417a57438498e0de481d3a0bc900c2b0e057.zip | |
drm/i915/gvt: filter cmds "srm" and "lrm" in cmd_handler
do not allow "srm" and "lrm" except for GEN8_L3SQCREG4 and 0x21f0.
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/20201223034508.17031-1-yan.y.zhao@intel.com
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/cmd_parser.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/cmd_parser.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index a598329a3354..7ee101644e75 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -982,6 +982,17 @@ static int cmd_reg_handler(struct parser_exec_state *s, patch_value(s, cmd_ptr(s, index), VGT_PVINFO_PAGE); } + if (!strncmp(cmd, "srm", 3) || + !strncmp(cmd, "lrm", 3)) { + if (offset != i915_mmio_reg_offset(GEN8_L3SQCREG4) && + offset != 0x21f0) { + gvt_vgpu_err("%s access to register (%x)\n", + cmd, offset); + return -EPERM; + } else + return 0; + } + if (is_cmd_update_pdps(offset, s) && cmd_pdp_mmio_update_handler(s, offset, index)) return -EINVAL; |