Hi Robin,
On Tue, Jul 12, 2016 at 12:42:59PM +0100, Robin Murphy wrote:
> Ah, that's the angle I was missing, yes. So if, say, someone is mapping
> a page at IOVA 0x while someone else is mapping a page at 0x1000,
> there could still be a race between both callers writing the non-leaf
> PTEs,
On 12/07/16 12:08, Joerg Roedel wrote:
> Hi Robin,
>
> On Tue, Jul 12, 2016 at 11:55:39AM +0100, Robin Murphy wrote:
>>> start = address;
>>> for (i = 0; i < pages; ++i) {
>>> - ret = dma_ops_domain_map(dma_dom, start, paddr, dir);
>>> - if (ret == DMA_ERROR_CODE)
>>>
Hi Robin,
On Tue, Jul 12, 2016 at 11:55:39AM +0100, Robin Murphy wrote:
> > start = address;
> > for (i = 0; i < pages; ++i) {
> > - ret = dma_ops_domain_map(dma_dom, start, paddr, dir);
> > - if (ret == DMA_ERROR_CODE)
> > + ret =
