On Thu, Jul 23, 2020 at 1:43 PM Logan Gunthorpe <[email protected]> wrote: > > The AMD Zen 2 root complex (Starship/Matisse) was tested for P2PDMA > transactions between root ports and found to work. Therefore add it > to the list. > > Signed-off-by: Logan Gunthorpe <[email protected]> > Cc: Bjorn Helgaas <[email protected]> > Cc: Christian König <[email protected]> > Cc: Huang Rui <[email protected]> > Cc: Alex Deucher <[email protected]>
Starting with Zen, all AMD platforms support P2P for reads and writes. Reviewed-by: Alex Deucher <[email protected]> > --- > drivers/pci/p2pdma.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c > index e8e444eeb1cd..3d67a1ee083e 100644 > --- a/drivers/pci/p2pdma.c > +++ b/drivers/pci/p2pdma.c > @@ -284,6 +284,8 @@ static const struct pci_p2pdma_whitelist_entry { > {PCI_VENDOR_ID_AMD, 0x1450, 0}, > {PCI_VENDOR_ID_AMD, 0x15d0, 0}, > {PCI_VENDOR_ID_AMD, 0x1630, 0}, > + /* AMD ZEN 2 */ > + {PCI_VENDOR_ID_AMD, 0x1480, 0}, > > /* Intel Xeon E5/Core i7 */ > {PCI_VENDOR_ID_INTEL, 0x3c00, REQ_SAME_HOST_BRIDGE}, > > base-commit: ba47d845d715a010f7b51f6f89bae32845e6acb7 > -- > 2.20.1 >
