Hi Stuart, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on v5.4-rc8 next-20191119] [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/Stuart-Summers/drm-i915-gem-Ensure-aperture-exists-before-setting-domain-to-GTT/20191120-111351 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-a002-20191120 (attached as .config) compiler: gcc-4.9 (Debian 4.9.2-10+deb8u1) 4.9.2 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/gpu/drm/i915/gem/i915_gem_domain.c: In function 'i915_gem_object_set_to_gtt_domain': >> drivers/gpu/drm/i915/gem/i915_gem_domain.c:114:31: error: 'i915' undeclared (first use in this function) if (!i915_ggtt_has_aperture(&i915->ggtt)) ^ drivers/gpu/drm/i915/gem/i915_gem_domain.c:114:31: note: each undeclared identifier is reported only once for each function it appears in vim +/i915 +114 drivers/gpu/drm/i915/gem/i915_gem_domain.c 98 99 /** 100 * Moves a single object to the GTT read, and possibly write domain. 101 * @obj: object to act on 102 * @write: ask for write access or read only 103 * 104 * This function returns when the move is complete, including waiting on 105 * flushes to occur. 106 */ 107 int 108 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write) 109 { 110 int ret; 111 112 assert_object_held(obj); 113 > 114 if (!i915_ggtt_has_aperture(&i915->ggtt)) 115 return -ENODEV; 116 117 ret = i915_gem_object_wait(obj, 118 I915_WAIT_INTERRUPTIBLE | 119 (write ? I915_WAIT_ALL : 0), 120 MAX_SCHEDULE_TIMEOUT); 121 if (ret) 122 return ret; 123 124 if (obj->write_domain == I915_GEM_DOMAIN_GTT) 125 return 0; 126 127 /* Flush and acquire obj->pages so that we are coherent through 128 * direct access in memory with previous cached writes through 129 * shmemfs and that our cache domain tracking remains valid. 130 * For example, if the obj->filp was moved to swap without us 131 * being notified and releasing the pages, we would mistakenly 132 * continue to assume that the obj remained out of the CPU cached 133 * domain. 134 */ 135 ret = i915_gem_object_pin_pages(obj); 136 if (ret) 137 return ret; 138 139 i915_gem_object_flush_write_domain(obj, ~I915_GEM_DOMAIN_GTT); 140 141 /* Serialise direct access to this object with the barriers for 142 * coherent writes from the GPU, by effectively invalidating the 143 * GTT domain upon first access. 144 */ 145 if ((obj->read_domains & I915_GEM_DOMAIN_GTT) == 0) 146 mb(); 147 148 /* It should now be out of any other write domains, and we can update 149 * the domain values for our changes. 150 */ 151 GEM_BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); 152 obj->read_domains |= I915_GEM_DOMAIN_GTT; 153 if (write) { 154 obj->read_domains = I915_GEM_DOMAIN_GTT; 155 obj->write_domain = I915_GEM_DOMAIN_GTT; 156 obj->mm.dirty = true; 157 } 158 159 i915_gem_object_unpin_pages(obj); 160 return 0; 161 } 162 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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