从官网下载的sdk 内核4.9.28 使用pci_alloc_consistent()申请DMA一致性内存只能申请256k,超过256k就失败,而且不能连续申请,不知为什么。是ti的linux有问题吗,现在只能用kmalloc申请4M的空间,但又刷新不了cache,有工程师可以帮忙解答一下吗?谢谢!
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