* [PATCH] PCI/P2PDMA: Add Alibaba T-HEAD Yitian 710 to whitelist
@ 2026-09-18 8:24 Feng Tang
2026-09-18 15:17 ` Logan Gunthorpe
2026-09-18 17:33 ` Bjorn Helgaas
0 siblings, 2 replies; 3+ messages in thread
From: Feng Tang @ 2026-09-18 8:24 UTC (permalink / raw)
To: Bjorn Helgaas, Logan Gunthorpe
Cc: Stephen Bates, linux-pci, linux-kernel, Feng Tang
Alibaba T-HEAD Yitian 710 surports PCI peer-to-peer transactions. Add it
to the P2P whitelist.
2 NVME cards with CMB (Command Memory Buffer) have run p2pmem-test [1]
fine, under same root complex and different root complexes.
[1]. https://github.com/sbates130272/p2pmem-test
Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com>
---
drivers/pci/p2pdma.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index c8c414af7078..beb1fe20c9de 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -576,6 +576,8 @@ static const struct pci_p2pdma_whitelist_entry {
{PCI_VENDOR_ID_ZHAOXIN, 0x1006, REQ_SAME_HOST_BRIDGE},
{PCI_VENDOR_ID_ZHAOXIN, 0x1007, REQ_SAME_HOST_BRIDGE},
{PCI_VENDOR_ID_ZHAOXIN, 0x1008, 0},
+ /* Alibaba T-HEAD Yitian 710 CPU */
+ {PCI_VENDOR_ID_ALIBABA, 0x8000, 0},
{}
};
base-commit: 2ce4ced05cd7b16f3d3430eac021d6184752175f
--
2.43.5
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] PCI/P2PDMA: Add Alibaba T-HEAD Yitian 710 to whitelist
2026-09-18 8:24 [PATCH] PCI/P2PDMA: Add Alibaba T-HEAD Yitian 710 to whitelist Feng Tang
@ 2026-09-18 15:17 ` Logan Gunthorpe
2026-09-18 17:33 ` Bjorn Helgaas
1 sibling, 0 replies; 3+ messages in thread
From: Logan Gunthorpe @ 2026-09-18 15:17 UTC (permalink / raw)
To: Feng Tang, Bjorn Helgaas; +Cc: Stephen Bates, linux-pci, linux-kernel
On 2026-09-18 02:24, Feng Tang wrote:
> Alibaba T-HEAD Yitian 710 surports PCI peer-to-peer transactions. Add it
> to the P2P whitelist.
>
> 2 NVME cards with CMB (Command Memory Buffer) have run p2pmem-test [1]
> fine, under same root complex and different root complexes.
>
> [1]. https://github.com/sbates130272/p2pmem-test
>
> Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com>
Acked-by: Logan Gunthorpe <logang@deltatee.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] PCI/P2PDMA: Add Alibaba T-HEAD Yitian 710 to whitelist
2026-09-18 8:24 [PATCH] PCI/P2PDMA: Add Alibaba T-HEAD Yitian 710 to whitelist Feng Tang
2026-09-18 15:17 ` Logan Gunthorpe
@ 2026-09-18 17:33 ` Bjorn Helgaas
1 sibling, 0 replies; 3+ messages in thread
From: Bjorn Helgaas @ 2026-09-18 17:33 UTC (permalink / raw)
To: Feng Tang
Cc: Bjorn Helgaas, Logan Gunthorpe, Stephen Bates, linux-pci, linux-kernel
On Fri, Sep 18, 2026 at 04:24:12PM +0800, Feng Tang wrote:
> Alibaba T-HEAD Yitian 710 surports PCI peer-to-peer transactions. Add it
> to the P2P whitelist.
>
> 2 NVME cards with CMB (Command Memory Buffer) have run p2pmem-test [1]
> fine, under same root complex and different root complexes.
>
> [1]. https://github.com/sbates130272/p2pmem-test
>
> Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com>
Applied to pci/p2pdma for v7.4, thank you!
> ---
> drivers/pci/p2pdma.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
> index c8c414af7078..beb1fe20c9de 100644
> --- a/drivers/pci/p2pdma.c
> +++ b/drivers/pci/p2pdma.c
> @@ -576,6 +576,8 @@ static const struct pci_p2pdma_whitelist_entry {
> {PCI_VENDOR_ID_ZHAOXIN, 0x1006, REQ_SAME_HOST_BRIDGE},
> {PCI_VENDOR_ID_ZHAOXIN, 0x1007, REQ_SAME_HOST_BRIDGE},
> {PCI_VENDOR_ID_ZHAOXIN, 0x1008, 0},
> + /* Alibaba T-HEAD Yitian 710 CPU */
> + {PCI_VENDOR_ID_ALIBABA, 0x8000, 0},
> {}
> };
>
>
> base-commit: 2ce4ced05cd7b16f3d3430eac021d6184752175f
> --
> 2.43.5
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-09-18 17:33 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2026-09-18 8:24 [PATCH] PCI/P2PDMA: Add Alibaba T-HEAD Yitian 710 to whitelist Feng Tang
2026-09-18 15:17 ` Logan Gunthorpe
2026-09-18 17:33 ` Bjorn Helgaas
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