linux-kernel - [PATCH 1/6] powerpc/pseries: Log hcall return codes for PLPKS debug

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Message-Id: <20221228072943.429266-2-ruscur@russell.cc>
Date:   Wed, 28 Dec 2022 18:29:38 +1100
From:   Russell Currey <ruscur@...sell.cc>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     gregkh@...uxfoundation.org, gcwilson@...ux.ibm.com,
        linux-kernel@...r.kernel.org, nayna@...ux.ibm.com,
        ajd@...ux.ibm.com, zohar@...ux.ibm.com, mpe@...erman.id.au,
        Russell Currey <ruscur@...sell.cc>
Subject: [PATCH 1/6] powerpc/pseries: Log hcall return codes for PLPKS debug

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@...sell.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