Re: [PATCH] drm/i915/gvt: query if vgpu is active via GETPARAM IOCTL

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Hi Shaofeng,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on drm-tip/drm-tip linus/master v5.8-rc1 next-20200616]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Shaofeng-Tang/drm-i915-gvt-query-if-vgpu-is-active-via-GETPARAM-IOCTL/20200616-162408
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-debian-10.3 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce (this is a W=1 build):
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>, old ones prefixed by <<):

drivers/gpu/drm/i915/i915_getparam.c: In function 'i915_getparam_ioctl':
>> drivers/gpu/drm/i915/i915_getparam.c:165:11: error: implicit declaration of function 'intel_vgpu_active'; did you mean 'intel_vtd_active'? [-Werror=implicit-function-declaration]
165 |   value = intel_vgpu_active(i915);
|           ^~~~~~~~~~~~~~~~~
|           intel_vtd_active
cc1: some warnings being treated as errors

vim +165 drivers/gpu/drm/i915/i915_getparam.c

    10	
    11	int i915_getparam_ioctl(struct drm_device *dev, void *data,
    12				struct drm_file *file_priv)
    13	{
    14		struct drm_i915_private *i915 = to_i915(dev);
    15		const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
    16		drm_i915_getparam_t *param = data;
    17		int value;
    18	
    19		switch (param->param) {
    20		case I915_PARAM_IRQ_ACTIVE:
    21		case I915_PARAM_ALLOW_BATCHBUFFER:
    22		case I915_PARAM_LAST_DISPATCH:
    23		case I915_PARAM_HAS_EXEC_CONSTANTS:
    24			/* Reject all old ums/dri params. */
    25			return -ENODEV;
    26		case I915_PARAM_CHIPSET_ID:
    27			value = i915->drm.pdev->device;
    28			break;
    29		case I915_PARAM_REVISION:
    30			value = i915->drm.pdev->revision;
    31			break;
    32		case I915_PARAM_NUM_FENCES_AVAIL:
    33			value = i915->ggtt.num_fences;
    34			break;
    35		case I915_PARAM_HAS_OVERLAY:
    36			value = !!i915->overlay;
    37			break;
    38		case I915_PARAM_HAS_BSD:
    39			value = !!intel_engine_lookup_user(i915,
    40							   I915_ENGINE_CLASS_VIDEO, 0);
    41			break;
    42		case I915_PARAM_HAS_BLT:
    43			value = !!intel_engine_lookup_user(i915,
    44							   I915_ENGINE_CLASS_COPY, 0);
    45			break;
    46		case I915_PARAM_HAS_VEBOX:
    47			value = !!intel_engine_lookup_user(i915,
    48							   I915_ENGINE_CLASS_VIDEO_ENHANCE, 0);
    49			break;
    50		case I915_PARAM_HAS_BSD2:
    51			value = !!intel_engine_lookup_user(i915,
    52							   I915_ENGINE_CLASS_VIDEO, 1);
    53			break;
    54		case I915_PARAM_HAS_LLC:
    55			value = HAS_LLC(i915);
    56			break;
    57		case I915_PARAM_HAS_WT:
    58			value = HAS_WT(i915);
    59			break;
    60		case I915_PARAM_HAS_ALIASING_PPGTT:
    61			value = INTEL_PPGTT(i915);
    62			break;
    63		case I915_PARAM_HAS_SEMAPHORES:
    64			value = !!(i915->caps.scheduler & I915_SCHEDULER_CAP_SEMAPHORES);
    65			break;
    66		case I915_PARAM_HAS_SECURE_BATCHES:
    67			value = HAS_SECURE_BATCHES(i915) && capable(CAP_SYS_ADMIN);
    68			break;
    69		case I915_PARAM_CMD_PARSER_VERSION:
    70			value = i915_cmd_parser_get_version(i915);
    71			break;
    72		case I915_PARAM_SUBSLICE_TOTAL:
    73			value = intel_sseu_subslice_total(sseu);
    74			if (!value)
    75				return -ENODEV;
    76			break;
    77		case I915_PARAM_EU_TOTAL:
    78			value = sseu->eu_total;
    79			if (!value)
    80				return -ENODEV;
    81			break;
    82		case I915_PARAM_HAS_GPU_RESET:
    83			value = i915_modparams.enable_hangcheck &&
    84				intel_has_gpu_reset(&i915->gt);
    85			if (value && intel_has_reset_engine(&i915->gt))
    86				value = 2;
    87			break;
    88		case I915_PARAM_HAS_RESOURCE_STREAMER:
    89			value = 0;
    90			break;
    91		case I915_PARAM_HAS_POOLED_EU:
    92			value = HAS_POOLED_EU(i915);
    93			break;
    94		case I915_PARAM_MIN_EU_IN_POOL:
    95			value = sseu->min_eu_in_pool;
    96			break;
    97		case I915_PARAM_HUC_STATUS:
    98			value = intel_huc_check_status(&i915->gt.uc.huc);
    99			if (value < 0)
   100				return value;
   101			break;
   102		case I915_PARAM_MMAP_GTT_VERSION:
   103			/* Though we've started our numbering from 1, and so class all
   104			 * earlier versions as 0, in effect their value is undefined as
   105			 * the ioctl will report EINVAL for the unknown param!
   106			 */
   107			value = i915_gem_mmap_gtt_version();
   108			break;
   109		case I915_PARAM_HAS_SCHEDULER:
   110			value = i915->caps.scheduler;
   111			break;
   112	
   113		case I915_PARAM_MMAP_VERSION:
   114			/* Remember to bump this if the version changes! */
   115		case I915_PARAM_HAS_GEM:
   116		case I915_PARAM_HAS_PAGEFLIPPING:
   117		case I915_PARAM_HAS_EXECBUF2: /* depends on GEM */
   118		case I915_PARAM_HAS_RELAXED_FENCING:
   119		case I915_PARAM_HAS_COHERENT_RINGS:
   120		case I915_PARAM_HAS_RELAXED_DELTA:
   121		case I915_PARAM_HAS_GEN7_SOL_RESET:
   122		case I915_PARAM_HAS_WAIT_TIMEOUT:
   123		case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
   124		case I915_PARAM_HAS_PINNED_BATCHES:
   125		case I915_PARAM_HAS_EXEC_NO_RELOC:
   126		case I915_PARAM_HAS_EXEC_HANDLE_LUT:
   127		case I915_PARAM_HAS_COHERENT_PHYS_GTT:
   128		case I915_PARAM_HAS_EXEC_SOFTPIN:
   129		case I915_PARAM_HAS_EXEC_ASYNC:
   130		case I915_PARAM_HAS_EXEC_FENCE:
   131		case I915_PARAM_HAS_EXEC_CAPTURE:
   132		case I915_PARAM_HAS_EXEC_BATCH_FIRST:
   133		case I915_PARAM_HAS_EXEC_FENCE_ARRAY:
   134		case I915_PARAM_HAS_EXEC_SUBMIT_FENCE:
   135			/* For the time being all of these are always true;
   136			 * if some supported hardware does not have one of these
   137			 * features this value needs to be provided from
   138			 * INTEL_INFO(), a feature macro, or similar.
   139			 */
   140			value = 1;
   141			break;
   142		case I915_PARAM_HAS_CONTEXT_ISOLATION:
   143			value = intel_engines_has_context_isolation(i915);
   144			break;
   145		case I915_PARAM_SLICE_MASK:
   146			value = sseu->slice_mask;
   147			if (!value)
   148				return -ENODEV;
   149			break;
   150		case I915_PARAM_SUBSLICE_MASK:
   151			value = sseu->subslice_mask[0];
   152			if (!value)
   153				return -ENODEV;
   154			break;
   155		case I915_PARAM_CS_TIMESTAMP_FREQUENCY:
   156			value = RUNTIME_INFO(i915)->cs_timestamp_frequency_hz;
   157			break;
   158		case I915_PARAM_MMAP_GTT_COHERENT:
   159			value = INTEL_INFO(i915)->has_coherent_ggtt;
   160			break;
   161		case I915_PARAM_PERF_REVISION:
   162			value = i915_perf_ioctl_version();
   163			break;
   164		case I915_PARAM_IS_GVT:
 > 165			value = intel_vgpu_active(i915);

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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