[PATCH] drm/amdgpu: Use cached partition mode, if valid
Lijo Lazar
lijo.lazar at amd.com
Sat Jul 5 04:24:35 UTC 2025
For current partition mode queries, return the mode cached in partition
manager whenever it's valid.
Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
index c8fcafeb6864..c417f8689220 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
@@ -218,15 +218,27 @@ int amdgpu_xcp_restore_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr)
return __amdgpu_xcp_switch_partition_mode(xcp_mgr, xcp_mgr->mode);
}
-int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags)
+static bool __amdgpu_xcp_is_cached_mode_valid(struct amdgpu_xcp_mgr *xcp_mgr)
{
- int mode;
+ if (!xcp_mgr->funcs || !xcp_mgr->funcs->query_partition_mode)
+ return true;
if (!amdgpu_sriov_vf(xcp_mgr->adev) &&
xcp_mgr->mode == AMDGPU_XCP_MODE_NONE)
- return xcp_mgr->mode;
+ return true;
- if (!xcp_mgr->funcs || !xcp_mgr->funcs->query_partition_mode)
+ if (xcp_mgr->mode != AMDGPU_XCP_MODE_NONE &&
+ xcp_mgr->mode != AMDGPU_XCP_MODE_TRANS)
+ return true;
+
+ return false;
+}
+
+int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags)
+{
+ int mode;
+
+ if (__amdgpu_xcp_is_cached_mode_valid(xcp_mgr))
return xcp_mgr->mode;
if (!(flags & AMDGPU_XCP_FL_LOCKED))
--
2.49.0
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