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Date:   Tue, 4 Apr 2023 16:36:52 +0800
From:   kernel test robot <lkp@intel.com>
To:     Danilo Krummrich <dakr@redhat.com>, airlied@gmail.com,
        daniel@ffwll.ch, tzimmermann@suse.de, mripard@kernel.org,
        corbet@lwn.net, christian.koenig@amd.com, bskeggs@redhat.com,
        Liam.Howlett@oracle.com, matthew.brost@intel.com,
        boris.brezillon@collabora.com, alexdeucher@gmail.com,
        ogabbay@kernel.org, bagasdotme@gmail.com, willy@infradead.org,
        jason@jlekstrand.net
Cc:     oe-kbuild-all@lists.linux.dev, dri-devel@lists.freedesktop.org,
        nouveau@lists.freedesktop.org, linux-doc@vger.kernel.org,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Danilo Krummrich <dakr@redhat.com>
Subject: Re: [PATCH drm-next v3 05/15] drm: debugfs: provide infrastructure
 to dump a DRM GPU VA space
Message-ID: <202304041602.xJ8yUJgd-lkp@intel.com>
References: <20230404012741.116502-6-dakr@redhat.com>
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In-Reply-To: <20230404012741.116502-6-dakr@redhat.com>
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Hi Danilo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on d36d68fd1925d33066d52468b7c7c6aca6521248]

url:    https://github.com/intel-lab-lkp/linux/commits/Danilo-Krummrich/drm-execution-context-for-GEM-buffers-v3/20230404-093042
base:   d36d68fd1925d33066d52468b7c7c6aca6521248
patch link:    https://lore.kernel.org/r/20230404012741.116502-6-dakr%40redhat.com
patch subject: [PATCH drm-next v3 05/15] drm: debugfs: provide infrastructure to dump a DRM GPU VA space
config: nios2-randconfig-s053-20230403 (https://download.01.org/0day-ci/archive/20230404/202304041602.xJ8yUJgd-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/97d8731cc359143f6f790b1c4755d1055a72adb9
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Danilo-Krummrich/drm-execution-context-for-GEM-buffers-v3/20230404-093042
        git checkout 97d8731cc359143f6f790b1c4755d1055a72adb9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=nios2 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/gpu/drm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304041602.xJ8yUJgd-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/drm_debugfs.c:213:33: sparse: sparse: non size-preserving pointer to integer cast

vim +213 drivers/gpu/drm/drm_debugfs.c

   178	
   179	/**
   180	 * drm_debugfs_gpuva_info - dump the given DRM GPU VA space
   181	 * @m: pointer to the &seq_file to write
   182	 * @mgr: the &drm_gpuva_manager representing the GPU VA space
   183	 *
   184	 * Dumps the GPU VA mappings of a given DRM GPU VA manager.
   185	 *
   186	 * For each DRM GPU VA space drivers should call this function from their
   187	 * &drm_info_list's show callback.
   188	 *
   189	 * Returns: 0 on success, -ENODEV if the &mgr is not initialized
   190	 */
   191	int drm_debugfs_gpuva_info(struct seq_file *m,
   192				   struct drm_gpuva_manager *mgr)
   193	{
   194		DRM_GPUVA_ITER(it, mgr, 0);
   195		struct drm_gpuva *va, *kva = &mgr->kernel_alloc_node;
   196	
   197		if (!mgr->name)
   198			return -ENODEV;
   199	
   200		seq_printf(m, "DRM GPU VA space (%s) [0x%016llx;0x%016llx]\n",
   201			   mgr->name, mgr->mm_start, mgr->mm_start + mgr->mm_range);
   202		seq_printf(m, "Kernel reserved node [0x%016llx;0x%016llx]\n",
   203			   kva->va.addr, kva->va.addr + kva->va.range);
   204		seq_puts(m, "\n");
   205		seq_puts(m, " VAs | start              | range              | end                | object             | object offset\n");
   206		seq_puts(m, "-------------------------------------------------------------------------------------------------------------\n");
   207		drm_gpuva_iter_for_each(va, it) {
   208			if (unlikely(va == &mgr->kernel_alloc_node))
   209				continue;
   210	
   211			seq_printf(m, "     | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx\n",
   212				   va->va.addr, va->va.range, va->va.addr + va->va.range,
 > 213				   (u64)va->gem.obj, va->gem.offset);
   214		}
   215	
   216		return 0;
   217	}
   218	EXPORT_SYMBOL(drm_debugfs_gpuva_info);
   219	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests