[PATCH v2 1/7] powerpc/pseries: Log hcall return codes for PLPKS debug

Russell Currey posted 7 patches 2 years, 8 months ago
[PATCH v2 1/7] powerpc/pseries: Log hcall return codes for PLPKS debug
Posted by Russell Currey 2 years, 8 months ago
The plpks code converts hypervisor return codes into their Linux
equivalents so that users can understand them.  Having access to the
original return codes is really useful for debugging, so add a
pr_debug() so we don't lose information from the conversion.

Signed-off-by: Russell Currey <ruscur@russell.cc>
---
 arch/powerpc/platforms/pseries/plpks.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c
index 9e4401aabf4f..820218eb894f 100644
--- a/arch/powerpc/platforms/pseries/plpks.c
+++ b/arch/powerpc/platforms/pseries/plpks.c
@@ -131,6 +131,8 @@ static int pseries_status_to_err(int rc)
 		err = -EINVAL;
 	}
 
+	pr_debug("Converted hypervisor code %d to Linux %d\n", rc, err);
+
 	return err;
 }
 
-- 
2.38.1
Re: [PATCH v2 1/7] powerpc/pseries: Log hcall return codes for PLPKS debug
Posted by Andrew Donnellan 2 years, 8 months ago
On Fri, 2022-12-30 at 15:20 +1100, Russell Currey wrote:
> The plpks code converts hypervisor return codes into their Linux
> equivalents so that users can understand them.  Having access to the
> original return codes is really useful for debugging, so add a
> pr_debug() so we don't lose information from the conversion.
> 
> Signed-off-by: Russell Currey <ruscur@russell.cc>

This is indeed useful to have.

Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Tested-by: Andrew Donnellan <ajd@linux.ibm.com>

> ---
>  arch/powerpc/platforms/pseries/plpks.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/powerpc/platforms/pseries/plpks.c
> b/arch/powerpc/platforms/pseries/plpks.c
> index 9e4401aabf4f..820218eb894f 100644
> --- a/arch/powerpc/platforms/pseries/plpks.c
> +++ b/arch/powerpc/platforms/pseries/plpks.c
> @@ -131,6 +131,8 @@ static int pseries_status_to_err(int rc)
>                 err = -EINVAL;
>         }
>  
> +       pr_debug("Converted hypervisor code %d to Linux %d\n", rc,
> err);
> +
>         return err;
>  }
>  

-- 
Andrew Donnellan    OzLabs, ADL Canberra
ajd@linux.ibm.com   IBM Australia Limited