Re: [PATCH] net: vmxnet3: avoid accessing the data mapped to streaming DMA

On 2020/8/4 6:59, David Miller wrote: From: Jia-Ju Bai Date: Sun, 2 Aug 2020 21:11:07 +0800 In vmxnet3_probe_device(), "adapter" is mapped to streaming DMA: adapter->adapter_pa = dma_map_single(..., adapter, ...); Then "adapter" is accessed at many places in this function. Theses

Re: [PATCH] net: vmxnet3: avoid accessing the data mapped to streaming DMA

From: Jia-Ju Bai Date: Sun, 2 Aug 2020 21:11:07 +0800 > In vmxnet3_probe_device(), "adapter" is mapped to streaming DMA: > adapter->adapter_pa = dma_map_single(..., adapter, ...); > > Then "adapter" is accessed at many places in this function. > > Theses accesses may cause data

[PATCH] net: vmxnet3: avoid accessing the data mapped to streaming DMA

In vmxnet3_probe_device(), "adapter" is mapped to streaming DMA: adapter->adapter_pa = dma_map_single(..., adapter, ...); Then "adapter" is accessed at many places in this function. Theses accesses may cause data inconsistency between CPU cache and hardware. To fix this problem,