On 19.11.14 at 17:02, david.vra...@citrix.com wrote:
On a Xen PV guest the DMA addresses and physical addresses are not 1:1
(such as Xen PV guests) and the generic dma_get_required_mask() does
not return the correct mask (since it uses max_pfn).
Some device drivers (such as mptsas, mpt2sas)
On 19/11/14 17:51, Stefano Stabellini wrote:
On Wed, 19 Nov 2014, David Vrabel wrote:
+u64
+xen_swiotlb_get_required_mask(struct device *dev)
+{
+unsigned long max_mfn;
+
+max_mfn = HYPERVISOR_memory_op(XENMEM_maximum_ram_page, NULL);
As Jan pointed out, I think you need to
On Wed, 19 Nov 2014, David Vrabel wrote:
On a Xen PV guest the DMA addresses and physical addresses are not 1:1
(such as Xen PV guests) and the generic dma_get_required_mask() does
not return the correct mask (since it uses max_pfn).
Some device drivers (such as mptsas, mpt2sas) use
