linux-kernel - [PATCH v4 17/24] powerpc/pseries: Log hcall return codes for PLPKS debug

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Message-Id: <20230120074306.1326298-18-ajd@linux.ibm.com>
Date:   Fri, 20 Jan 2023 18:42:59 +1100
From:   Andrew Donnellan <ajd@...ux.ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org, linux-integrity@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, gcwilson@...ux.ibm.com,
        linux-kernel@...r.kernel.org, nayna@...ux.ibm.com,
        ruscur@...sell.cc, zohar@...ux.ibm.com, mpe@...erman.id.au,
        gjoyce@...ux.ibm.com, sudhakar@...ux.ibm.com, bgray@...ux.ibm.com,
        erichte@...ux.ibm.com, joel@....id.au
Subject: [PATCH v4 17/24] powerpc/pseries: Log hcall return codes for PLPKS debug

From: Russell Currey <ruscur@...sell.cc>

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>
Signed-off-by: Andrew Donnellan <ajd@...ux.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 796ed5544ee5..96a026a37285 100644
--- a/arch/powerpc/platforms/pseries/plpks.c
+++ b/arch/powerpc/platforms/pseries/plpks.c
@@ -117,6 +117,8 @@ static int pseries_status_to_err(int rc)
 		err = -EINVAL;
 	}
 
+	pr_debug("Converted hypervisor code %d to Linux %d\n", rc, err);
+
 	return err;
 }
 
-- 
2.39.0