From: Manoj Kumar <manoj@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v5 03/18] cxl: Define process problem state area at attach time only
Date: Tue, 23 Feb 2016 13:09:18 -0600 [thread overview]
Message-ID: <56CCAE5E.5040308@linux.vnet.ibm.com> (raw)
In-Reply-To: <1456244519-18934-4-git-send-email-fbarrat@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
---
Manoj Kumar
On 2/23/2016 10:21 AM, Frederic Barrat wrote:
> CXL kernel API was defining the process problem state area during
> 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 <clombard@linux.vnet.ibm.com>
> Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
> Signed-off-by: Christophe Lombard <clombard@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);
>
next prev parent reply other threads:[~2016-02-23 19:09 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-23 16:21 [PATCH v5 00/18] cxl: Add support for powerVM guest Frederic Barrat
2016-02-23 16:21 ` [PATCH v5 01/18] cxl: Move common code away from bare-metal-specific files Frederic Barrat
2016-02-23 19:08 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 02/18] cxl: Move bare-metal specific code to specialized files Frederic Barrat
2016-02-23 19:09 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 03/18] cxl: Define process problem state area at attach time only Frederic Barrat
2016-02-23 19:09 ` Manoj Kumar [this message]
2016-03-03 3:55 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 04/18] cxl: Introduce implementation-specific API Frederic Barrat
2016-02-23 19:09 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 05/18] cxl: Rename some bare-metal specific functions Frederic Barrat
2016-02-23 19:11 ` Manoj Kumar
2016-03-03 4:56 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 06/18] cxl: Isolate a few bare-metal-specific calls Frederic Barrat
2016-02-23 19:12 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 07/18] cxl: Update cxl_irq() prototype Frederic Barrat
2016-02-23 19:13 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 08/18] cxl: IRQ allocation for guests Frederic Barrat
2016-02-23 19:16 ` Manoj Kumar
2016-03-03 4:59 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 09/18] cxl: New possible return value from hcall Frederic Barrat
2016-02-23 19:18 ` Manoj Kumar
2016-02-23 19:28 ` Michael Neuling
2016-02-23 16:21 ` [PATCH v5 10/18] cxl: New hcalls to support cxl adapters Frederic Barrat
2016-02-23 19:23 ` Manoj Kumar
2016-03-03 4:04 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 11/18] cxl: Separate bare-metal fields in adapter and AFU data structures Frederic Barrat
2016-02-24 16:50 ` Manoj Kumar
2016-03-03 4:09 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 12/18] cxl: Add guest-specific code Frederic Barrat
2016-02-24 18:55 ` Manoj Kumar
2016-03-03 5:02 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 13/18] cxl: sysfs support for guests Frederic Barrat
2016-02-24 19:03 ` Manoj Kumar
2016-03-03 5:04 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 14/18] cxl: Support to flash a new image on the adapter from a guest Frederic Barrat
2016-02-24 20:03 ` Manoj Kumar
2016-02-25 13:11 ` Frederic Barrat
2016-02-25 16:59 ` Manoj Kumar
2016-03-03 4:52 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 15/18] cxl: Parse device tree and create cxl device(s) at boot Frederic Barrat
2016-02-24 20:15 ` Manoj Kumar
2016-02-25 13:19 ` Frederic Barrat
2016-02-25 16:44 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 16/18] cxl: Support the cxl kernel API from a guest Frederic Barrat
2016-02-24 21:09 ` Manoj Kumar
2016-03-03 5:08 ` Ian Munsie
2016-02-23 16:21 ` [PATCH v5 17/18] cxl: Adapter failure handling Frederic Barrat
2016-02-24 21:41 ` Manoj Kumar
2016-02-23 16:21 ` [PATCH v5 18/18] cxl: Add tracepoints around the cxl hcall Frederic Barrat
2016-02-24 21:49 ` Manoj Kumar
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