> > Did you run any performance tests to see if adding the extra
> > spinlock (as the native SWIOTLB already has its own lock) and handling
> > of the tree is affecting it?
.. bla bla..
> I haven't done any measurements but consider that the spin_lock is
> already only used to access the red-blac
On Thu, 15 Aug 2013, Konrad Rzeszutek Wilk wrote:
> On Thu, Aug 15, 2013 at 12:10:53PM +0100, Stefano Stabellini wrote:
> > Support autotranslate guests in swiotlb-xen by keeping track of the
> > phys-to-bus and bus-to-phys mappings of the swiotlb buffer
> > (xen_io_tlb_start-xen_io_tlb_end).
> >
On Thu, Aug 15, 2013 at 12:10:53PM +0100, Stefano Stabellini wrote:
> Support autotranslate guests in swiotlb-xen by keeping track of the
> phys-to-bus and bus-to-phys mappings of the swiotlb buffer
> (xen_io_tlb_start-xen_io_tlb_end).
>
> Use a simple direct access on a pre-allocated array for ph
Support autotranslate guests in swiotlb-xen by keeping track of the
phys-to-bus and bus-to-phys mappings of the swiotlb buffer
(xen_io_tlb_start-xen_io_tlb_end).
Use a simple direct access on a pre-allocated array for phys-to-bus
queries. Use a red-black tree for bus-to-phys queries.
Signed-off-b
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