[PATCH 13/26] drm/xe/pf: Remove GuC migration data save/restore from GT debugfs

Michał Winiarski
2025-10-11T19:41:16Z

In upcoming changes, SR-IOV VF migration data will be extended beyond
GuC data and exported to userspace using VFIO interface (with a
vendor-specific variant driver) and a device-level debugfs interface.
Remove the GT-level debugfs.

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
---
drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c | 47 ---------------------
1 file changed, 47 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
index c026a3910e7e3..c2b27dab13aa8 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
@@ -320,9 +320,6 @@ static const struct {
{ "stop", xe_gt_sriov_pf_control_stop_vf },
{ "pause", xe_gt_sriov_pf_control_pause_vf },
{ "resume", xe_gt_sriov_pf_control_resume_vf },
-#ifdef CONFIG_DRM_XE_DEBUG_SRIOV
- { "restore!", xe_gt_sriov_pf_migration_restore_guc_state },
-#endif
};

static ssize_t control_write(struct file *file, const char __user *buf, size_t count, loff_t *pos)
@@ -386,47 +383,6 @@ static const struct file_operations control_ops = {
.llseek = default_llseek,
};

-/*
- * /sys/kernel/debug/dri/BDF/
- * ├── sriov
- * : ├── vf1
- * : ├── tile0
- * : ├── gt0
- * : ├── guc_state
- */
-
-static ssize_t guc_state_read(struct file *file, char __user *buf,
- size_t count, loff_t *pos)
-{
- struct dentry *dent = file_dentry(file);
- struct dentry *parent = dent->d_parent;
- struct xe_gt *gt = extract_gt(parent);
- unsigned int vfid = extract_vfid(parent);
-
- return xe_gt_sriov_pf_migration_read_guc_state(gt, vfid, buf, count, pos);
-}
-
-static ssize_t guc_state_write(struct file *file, const char __user *buf,
- size_t count, loff_t *pos)
-{
- struct dentry *dent = file_dentry(file);
- struct dentry *parent = dent->d_parent;
- struct xe_gt *gt = extract_gt(parent);
- unsigned int vfid = extract_vfid(parent);
-
- if (*pos)
- return -EINVAL;
-
- return xe_gt_sriov_pf_migration_write_guc_state(gt, vfid, buf, count);
-}
-
-static const struct file_operations guc_state_ops = {
- .owner = THIS_MODULE,
- .read = guc_state_read,
- .write = guc_state_write,
- .llseek = default_llseek,
-};
-
/*
* /sys/kernel/debug/dri/BDF/
* ├── sriov
@@ -561,9 +517,6 @@ static void pf_populate_gt(struct xe_gt *gt, struct dentry *dent, unsigned int v

/* for testing/debugging purposes only! */
if (IS_ENABLED(CONFIG_DRM_XE_DEBUG)) {
- debugfs_create_file("guc_state",
- IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV) ? 0600 : 0400,
- dent, NULL, &guc_state_ops);
debugfs_create_file("config_blob",
IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV) ? 0600 : 0400,
dent, NULL, &config_blob_ops);
--
2.50.1