From: <silouis@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: <will.aitken@amd.com>, <vskvorts@amd.com>, <lijo.lazar@amd.com>,
"Simon Louis" <silouis@amd.com>
Subject: [PATCH] drm/amdgpu: Disable xgmi link status for VFs
Date: Tue, 3 Feb 2026 15:42:00 +0000 [thread overview]
Message-ID: <20260203154200.21545-1-silouis@amd.com> (raw)
From: Simon Louis <silouis@amd.com>
Xgmi link status is unavailable in guest. This patch returns
XGMI_LINK_NA for VFs when in SRIOV.
Signed-off-by: Simon Louis <silouis@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index aad530c46a9f..7a24fcc41638 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -44,6 +44,7 @@
#define XGMI_STATE_LS0 0x81
#define XGMI_LINK_ACTIVE 1
#define XGMI_LINK_INACTIVE 0
+#define XGMI_LINK_NA 2
static DEFINE_MUTEX(xgmi_mutex);
@@ -349,6 +350,9 @@ int amdgpu_get_xgmi_link_status(struct amdgpu_device *adev, int global_link_num)
{
u32 xgmi_state_reg_val;
+ if (amdgpu_sriov_vf(adev))
+ return XGMI_LINK_NA;
+
if (adev->gmc.xgmi.num_physical_nodes <= 1)
return -EINVAL;
--
2.43.0
reply other threads:[~2026-02-03 15:42 UTC|newest]
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