tree: git://anongit.freedesktop.org/drm-intel drm-intel-next-queued
head: 75c7b0b8620ce5a672da02e721a775acb7863c64
commit: 894ccebee2b0e606ba9638d20dd87b33568482d7 [3/23] drm/i915: Micro-optimise gen8_ppgtt_insert_entries()
config: x86_64-randconfig-a0-02190713 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
git checkout 894ccebee2b0e606ba9638d20dd87b33568482d7
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
cc1: warnings being treated as errors
drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen8_ppgtt_insert_4lvl':
>> drivers/gpu/drm/i915/i915_gem_gtt.c:964: error: 'iter.sg' is used uninitialized in this function
>> drivers/gpu/drm/i915/i915_gem_gtt.c:965: error: 'iter.dma' is used uninitialized in this function
drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen8_ppgtt_insert_3lvl':
drivers/gpu/drm/i915/i915_gem_gtt.c:947: error: 'iter.sg' is used uninitialized in this function
drivers/gpu/drm/i915/i915_gem_gtt.c:948: error: 'iter.dma' is used uninitialized in this function
vim +964 drivers/gpu/drm/i915/i915_gem_gtt.c
958 enum i915_cache_level cache_level,
959 u32 unused)
960 {
961 struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
962 struct sgt_dma iter = {
963 .sg = pages->sgl,
> 964 .dma = sg_dma_address(iter.sg),
> 965 .max = iter.dma + iter.sg->length,
966 };
967 struct i915_page_directory_pointer **pdps = ppgtt->pml4.pdps;
968 unsigned int pml4e = gen8_pml4e_index(start);
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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.config.gz
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