On Tue, Mar 6, 2018 at 5:11 PM, Robin Murphy wrote:
>
> On 06/03/18 04:59, Jitendra Bhivare wrote:
>>
>> Certain regions in IO virtual address space may need to be reserved to be
>> not used for devices configured behind IOMMU.
>>
>> Add documentation of the property to allow such regions to be sp
On Tue, Mar 6, 2018 at 5:11 PM, Robin Murphy wrote:
> On 06/03/18 04:59, Jitendra Bhivare wrote:
>
>> Certain regions in IO virtual address space may need to be reserved to be
>> not used for devices configured behind IOMMU.
>>
>> Add documentation of the property to allow such regions to be spec
Hi Christoph,
> The point is that you should always use a pool, period.
> dma_alloc*/dma_free* are fundamentally expensive operations on my
> architectures, so if you call them from a fast path you are doing
> something wrong.
The author's comment in commit b3476675320e "usb: dma bounce buffer su
