On Thu, Feb 20, 2020 at 05:21:35PM +, Robin Murphy wrote:
>> @@ -196,10 +192,15 @@ void *dma_direct_alloc_pages(struct device *dev,
>> size_t size,
>> memset(ret, 0, size);
>> - if (IS_ENABLED(CONFIG_ARCH_HAS_UNCACHED_SEGMENT) &&
>> -dma_alloc_need_uncached(dev, attrs)) {
>> +
On 20/02/2020 5:01 pm, Christoph Hellwig wrote:
We currently only support remapping memory as uncached through vmap
or a magic uncached segment provided by some architectures. But there
is a simpler and much better way available on some architectures where
we can just remap the memory in place.
We currently only support remapping memory as uncached through vmap
or a magic uncached segment provided by some architectures. But there
is a simpler and much better way available on some architectures where
we can just remap the memory in place. The advantages are:
1) no aliasing is possible,
We currently only support remapping memory as uncached through vmap
or a magic uncached segment provided by some architectures. But there
is a simpler and much better way available on some architectures where
we can just remap the memory in place. The advantages are:
1) no aliasing is possible,
