[PATCH 1/3] drm/amdkfd: Define config HSA_AMD_P2P to support peer-to-peer

[Ramesh Errabolu]

Extend current kernel config requirements of amdgpu by adding
config HSA_AMD_P2P. Enabling HSA_AMD_P2P is REQUIRED to support
peer-to-peer communication, in both data and control planes, among
AMD GPU devices that are connected via PCIe and have large BAR vBIOS

Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/Kconfig b/drivers/gpu/drm/amd/amdkfd/Kconfig
index 8cc0a76ddf9f..26614f5f20ea 100644
--- a/drivers/gpu/drm/amd/amdkfd/Kconfig
+++ b/drivers/gpu/drm/amd/amdkfd/Kconfig
@@ -25,3 +25,11 @@ config HSA_AMD_SVM
 	  preemptions and one based on page faults. To enable page fault
 	  based memory management on most GFXv9 GPUs, set the module
 	  parameter amdgpu.noretry=0.
+
+config HSA_AMD_P2P
+	bool "HSA kernel driver support for peer-to-peer for AMD GPU devices"
+	depends on HSA_AMD && PCI_P2PDMA && DMABUF_MOVE_NOTIFY 
+	help
+	  Enable this if you want to access AMD GPU peer devices, in both data
+	  and control planes, that are connected via PCIe and have large BAR vBIOS
+
-- 
2.35.1