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
>>> On 19.11.14 at 17:02, 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
> dma_get_r
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
> dm
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
dma_get_required_mask() to set the device's DMA mask to
