Reviewed-by: Manoj Kumar <ma...@linux.vnet.ibm.com>
---
Manoj Kumar
Subject: [PATCH v4 03/18] cxl: Define process problem state area at
attach time only
Date: Tue, 16 Feb 2016 22:38:56 +0100
From: Frederic Barrat <fbar...@linux.vnet.ibm.com>
To: imun...@au1.ibm.com, michael.neul...@au1.ibm.com,
m...@ellerman.id.au, linuxppc-dev@lists.ozlabs.org
Cxl kernel API was defining the process problem state area during
Suggestion:
Cxl -> CXL
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 <clomb...@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbar...@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clomb...@linux.vnet.ibm.com>
---
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);
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