[AMD Official Use Only - General]

Reviewed-by: Harish Kasiviswanathan <[email protected]>


-----Original Message-----
From: amd-gfx <[email protected]> On Behalf Of Mukul Joshi
Sent: Friday, January 26, 2024 3:40 PM
To: [email protected]
Cc: Joshi, Mukul <[email protected]>; Kuehling, Felix <[email protected]>
Subject: [PATCH] drm/amdkfd: Use correct drm device for cgroup permission check

On GFX 9.4.3, for a given KFD node, fetch the correct drm device from
XCP manager when checking for cgroup permissions.

Signed-off-by: Mukul Joshi <[email protected]>
---
 drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h 
b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 17fbedbf3651..677281c0793e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -1488,10 +1488,15 @@ void kfd_dec_compute_active(struct kfd_node *dev);

 /* Cgroup Support */
 /* Check with device cgroup if @kfd device is accessible */
-static inline int kfd_devcgroup_check_permission(struct kfd_node *kfd)
+static inline int kfd_devcgroup_check_permission(struct kfd_node *node)
 {
 #if defined(CONFIG_CGROUP_DEVICE) || defined(CONFIG_CGROUP_BPF)
-       struct drm_device *ddev = adev_to_drm(kfd->adev);
+       struct drm_device *ddev;
+
+       if (node->xcp)
+               ddev = node->xcp->ddev;
+       else
+               ddev = adev_to_drm(node->adev);

        return devcgroup_check_permission(DEVCG_DEV_CHAR, DRM_MAJOR,
                                          ddev->render->index,
--
2.35.1

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