Re: [PATCH v2 4/8] s390/airq: use DMA memory for adapter interrupts

Sebastian Ott
2019-05-25T09:51:02Z

On Thu, 23 May 2019, Michael Mueller wrote:
> From: Halil Pasic <pasic@linux.ibm.com>
>
> Protected virtualization guests have to use shared pages for airq
> notifier bit vectors, because hypervisor needs to write these bits.
>
> Let us make sure we allocate DMA memory for the notifier bit vectors by
> replacing the kmem_cache with a dma_cache and kalloc() with
> cio_dma_zalloc().
>
> Signed-off-by: Halil Pasic <pasic@linux.ibm.com>

Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>