From: Benjamin Herrenschmidt
> Sent: 31 May 2017 03:26
...
> We might also need a way to provide the "initiator" with translated DMA
> addresses that allow to target the receiver.
Related to that is the ability to allocate memory that two (or more)
PCIe devices can DMA to/from.
That can be useful
Hi Frederic,
[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.12-rc3 next-20170531]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
On Tue, 2017-05-30 at 15:58 +0200, Frederic Barrat wrote:
> P9 has support for PCI peer-to-peer, enabling a device to write in the
> mmio space of another device directly, without interrupting the CPU.
>
> This patch adds support for it on powernv, by defining two APIs to
> declare a pci_dev as
P9 has support for PCI peer-to-peer, enabling a device to write in the
mmio space of another device directly, without interrupting the CPU.
This patch adds support for it on powernv, by defining two APIs to
declare a pci_dev as either a p2p sender or receiver:
int pnv_pci_set_p2p_sender(struct
