On 2018/7/25 2:09, Christoph Hellwig wrote: > On Tue, Jul 24, 2018 at 10:04:35PM +0800, YueHaibing wrote: >> Sean Wang report dma_zalloc_coherent doesn't work as expect on his >> armv7,the allocated mem is not zeroed.The reason is __alloc_from_pool >> doesn't honor __GFP_ZERO. > > Please explain the "why" a little more. All the explanations are in > the referenced arm64 commit and should be mentioned here as well.
ok, will send v2. > > . >
