Hi all, After merging the drm tree, today's linux-next build (powerpc allyesconfig) failed like this:
drivers/gpu/drm/ttm/ttm_pool.c:73:29: error: variably modified
'global_write_combined' at file scope
73 | static struct ttm_pool_type global_write_combined[TTM_DIM_ORDER];
| ^~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/ttm/ttm_pool.c:74:29: error: variably modified
'global_uncached' at file scope
74 | static struct ttm_pool_type global_uncached[TTM_DIM_ORDER];
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/ttm/ttm_pool.c:76:29: error: variably modified
'global_dma32_write_combined' at file scope
76 | static struct ttm_pool_type global_dma32_write_combined[TTM_DIM_ORDER];
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/ttm/ttm_pool.c:77:29: error: variably modified
'global_dma32_uncached' at file scope
77 | static struct ttm_pool_type global_dma32_uncached[TTM_DIM_ORDER];
| ^~~~~~~~~~~~~~~~~~~~~
Caused by commit
322458c2bb1a ("drm/ttm: Reduce the number of used allocation orders for TTM
pages")
PMD_SHIFT is not necessarily a constant on ppc (see
arch/powerpc/include/asm/book3s/64/pgtable.h).
I have reverted that commit for today.
--
Cheers,
Stephen Rothwell
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