linux-kernel - Re: [PATCH drm-next v2 13/16] drm/nouveau: nvkm/vmm: implement raw ops to manage uvmm

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Date:   Sat, 18 Feb 2023 09:16:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Danilo Krummrich <dakr@...hat.com>, airlied@...il.com,
        daniel@...ll.ch, tzimmermann@...e.de, mripard@...nel.org,
        corbet@....net, christian.koenig@....com, bskeggs@...hat.com,
        Liam.Howlett@...cle.com, matthew.brost@...el.com,
        boris.brezillon@...labora.com, alexdeucher@...il.com,
        ogabbay@...nel.org, bagasdotme@...il.com, willy@...radead.org,
        jason@...kstrand.net
Cc:     oe-kbuild-all@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
        nouveau@...ts.freedesktop.org, linux-doc@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Danilo Krummrich <dakr@...hat.com>
Subject: Re: [PATCH drm-next v2 13/16] drm/nouveau: nvkm/vmm: implement raw
 ops to manage uvmm

Hi Danilo,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 48075a66fca613477ac1969b576a93ef5db0164f]

url:    https://github.com/intel-lab-lkp/linux/commits/Danilo-Krummrich/drm-execution-context-for-GEM-buffers/20230217-215101
base:   48075a66fca613477ac1969b576a93ef5db0164f
patch link:    https://lore.kernel.org/r/20230217134820.14672-8-dakr%40redhat.com
patch subject: [PATCH drm-next v2 13/16] drm/nouveau: nvkm/vmm: implement raw ops to manage uvmm
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20230218/202302180839.s0w26kcJ-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/b25c0bcfed93dd62ed732968d8987b92e10c4579
        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/20230217-215101
        git checkout b25c0bcfed93dd62ed732968d8987b92e10c4579
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302180839.s0w26kcJ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h:4,
                    from drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.h:5,
                    from drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c:22:
   drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c: In function 'nvkm_uvmm_mthd_raw_map':
>> drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c:422:31: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     422 |                               (void *)args->argv, args->argc);
         |                               ^
   drivers/gpu/drm/nouveau/include/nvkm/core/memory.h:66:43: note: in definition of macro 'nvkm_memory_map'
      66 |         (p)->func->map((p),(o),(vm),(va),(av),(ac))
         |                                           ^~


vim +422 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c

   388	
   389	static int
   390	nvkm_uvmm_mthd_raw_map(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
   391	{
   392		struct nvkm_client *client = uvmm->object.client;
   393		struct nvkm_vmm *vmm = uvmm->vmm;
   394		struct nvkm_vma vma = {
   395			.addr = args->addr,
   396			.size = args->size,
   397			.used = true,
   398			.mapref = false,
   399			.no_comp = true,
   400		};
   401		struct nvkm_memory *memory;
   402		u64 handle = args->memory;
   403		u8 refd;
   404		int ret;
   405	
   406		if (!nvkm_vmm_in_managed_range(vmm, args->addr, args->size))
   407			return -EINVAL;
   408	
   409		ret = nvkm_uvmm_page_index(uvmm, args->size, args->shift, &refd);
   410		if (ret)
   411			return ret;
   412	
   413		vma.page = vma.refd = refd;
   414	
   415		memory = nvkm_umem_search(client, args->memory);
   416		if (IS_ERR(memory)) {
   417			VMM_DEBUG(vmm, "memory %016llx %ld\n", handle, PTR_ERR(memory));
   418			return PTR_ERR(memory);
   419		}
   420	
   421		ret = nvkm_memory_map(memory, args->offset, vmm, &vma,
 > 422				      (void *)args->argv, args->argc);
   423	
   424		nvkm_memory_unref(&vma.memory);
   425		nvkm_memory_unref(&memory);
   426		return ret;
   427	}
   428	

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