Re: Fwd: [PATCH v4 03/18] cxl: Define process problem state area at attach time only

context initialization, making it possible to map the problem state
area before attaching the context. This won't work on a powerVM
guest. So force the logical behavior, like in userspace: attach first,
then map the problem state area.
Remove calls to cxl_assign_psn_space during init. The function is
already called on the attach paths.

Co-authored-by: Christophe Lombard [off-list ref]
Signed-off-by: Frederic Barrat <redacted>
Signed-off-by: Christophe Lombard <redacted>
---
  drivers/misc/cxl/api.c | 11 ++---------
  1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index ea3eeb7..b45d857 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c

@@ -51,8 +51,6 @@ struct cxl_context *cxl_dev_context_init(struct

pci_dev *dev)
      if (rc)
          goto err_mapping;

-    cxl_assign_psn_space(ctx);
-
      return ctx;

  err_mapping:

@@ -207,7 +205,6 @@ EXPORT_SYMBOL_GPL(cxl_stop_context);
  void cxl_set_master(struct cxl_context *ctx)
  {
      ctx->master = true;
-    cxl_assign_psn_space(ctx);
  }
  EXPORT_SYMBOL_GPL(cxl_set_master);

@@ -325,15 +322,11 @@ EXPORT_SYMBOL_GPL(cxl_start_work);

  void __iomem *cxl_psa_map(struct cxl_context *ctx)
  {
-    struct cxl_afu *afu = ctx->afu;
-    int rc;
-
-    rc = cxl_afu_check_and_enable(afu);
-    if (rc)
+    if (ctx->status != STARTED)
          return NULL;

      pr_devel("%s: psn_phys%llx size:%llx\n",
-         __func__, afu->psn_phys, afu->adapter->ps_size);
+        __func__, ctx->psn_phys, ctx->psn_size);
      return ioremap(ctx->psn_phys, ctx->psn_size);
  }
  EXPORT_SYMBOL_GPL(cxl_psa_map);