Hi Matthew,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-tip/drm-tip drm-exynos/exynos-drm-next 
next-20210827]
[cannot apply to tegra-drm/drm/tegra/for-next linus/master drm/drm-next 
v5.14-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Matthew-Brost/Parallel-submission-aka-multi-bb-execbuf/20210821-065348
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-348-gf0e6938b-dirty
        # 
https://github.com/0day-ci/linux/commit/0741c4627df7b17e3e1b06c5967aed4371c688f7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Matthew-Brost/Parallel-submission-aka-multi-bb-execbuf/20210821-065348
        git checkout 0741c4627df7b17e3e1b06c5967aed4371c688f7
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/i915/gem/i915_gem_context.c:1411:26: sparse: sparse: 
>> incorrect type in argument 1 (different address spaces) @@     expected 
>> struct i915_gem_engines *e @@     got struct i915_gem_engines [noderef] 
>> __rcu *engines @@
   drivers/gpu/drm/i915/gem/i915_gem_context.c:1411:26: sparse:     expected 
struct i915_gem_engines *e
   drivers/gpu/drm/i915/gem/i915_gem_context.c:1411:26: sparse:     got struct 
i915_gem_engines [noderef] __rcu *engines
   drivers/gpu/drm/i915/gem/i915_gem_context.c:1626:34: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected struct 
i915_address_space *vm @@     got struct i915_address_space [noderef] __rcu *vm 
@@
   drivers/gpu/drm/i915/gem/i915_gem_context.c:1626:34: sparse:     expected 
struct i915_address_space *vm
   drivers/gpu/drm/i915/gem/i915_gem_context.c:1626:34: sparse:     got struct 
i915_address_space [noderef] __rcu *vm

vim +1411 drivers/gpu/drm/i915/gem/i915_gem_context.c

  1404  
  1405  static void context_close(struct i915_gem_context *ctx)
  1406  {
  1407          struct i915_address_space *vm;
  1408  
  1409          /* Flush any concurrent set_engines() */
  1410          mutex_lock(&ctx->engines_mutex);
> 1411          unpin_engines(ctx->engines);
  1412          engines_idle_release(ctx, rcu_replace_pointer(ctx->engines, 
NULL, 1));
  1413          i915_gem_context_set_closed(ctx);
  1414          mutex_unlock(&ctx->engines_mutex);
  1415  
  1416          mutex_lock(&ctx->mutex);
  1417  
  1418          set_closed_name(ctx);
  1419  
  1420          vm = i915_gem_context_vm(ctx);
  1421          if (vm)
  1422                  i915_vm_close(vm);
  1423  
  1424          if (ctx->syncobj)
  1425                  drm_syncobj_put(ctx->syncobj);
  1426  
  1427          ctx->file_priv = ERR_PTR(-EBADF);
  1428  
  1429          /*
  1430           * The LUT uses the VMA as a backpointer to unref the object,
  1431           * so we need to clear the LUT before we close all the VMA 
(inside
  1432           * the ppgtt).
  1433           */
  1434          lut_close(ctx);
  1435  
  1436          spin_lock(&ctx->i915->gem.contexts.lock);
  1437          list_del(&ctx->link);
  1438          spin_unlock(&ctx->i915->gem.contexts.lock);
  1439  
  1440          mutex_unlock(&ctx->mutex);
  1441  
  1442          /*
  1443           * If the user has disabled hangchecking, we can not be sure 
that
  1444           * the batches will ever complete after the context is closed,
  1445           * keeping the context and all resources pinned forever. So in 
this
  1446           * case we opt to forcibly kill off all remaining requests on
  1447           * context close.
  1448           */
  1449          kill_context(ctx);
  1450  
  1451          i915_gem_context_put(ctx);
  1452  }
  1453  

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

Attachment: .config.gz
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