linux-kernel - [PATCH 2/2] iommu/amd: Clarify AMD IOMMUv2 initialization messages

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Date:   Tue, 23 Nov 2021 11:55:07 +0100
From:   Joerg Roedel <joro@...tes.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Will Deacon <will@...nel.org>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        x86@...nel.org, Lu Baolu <baolu.lu@...ux.intel.com>,
        linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
        Joerg Roedel <jroedel@...e.de>, stable@...r.kernel.org
Subject: [PATCH 2/2] iommu/amd: Clarify AMD IOMMUv2 initialization messages

From: Joerg Roedel <jroedel@...e.de>

The messages printed on the initialization of the AMD IOMMUv2 driver
have caused some confusion in the past. Clarify the messages to lower
the confusion in the future.

Cc: stable@...r.kernel.org
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/amd/iommu_v2.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c
index 13cbeb997cc1..58da08cc3d01 100644
--- a/drivers/iommu/amd/iommu_v2.c
+++ b/drivers/iommu/amd/iommu_v2.c
@@ -929,10 +929,8 @@ static int __init amd_iommu_v2_init(void)
 {
 	int ret;
 
-	pr_info("AMD IOMMUv2 driver by Joerg Roedel <jroedel@...e.de>\n");
-
 	if (!amd_iommu_v2_supported()) {
-		pr_info("AMD IOMMUv2 functionality not available on this system\n");
+		pr_info("AMD IOMMUv2 functionality not available on this system - This is not a bug.\n");
 		/*
 		 * Load anyway to provide the symbols to other modules
 		 * which may use AMD IOMMUv2 optionally.
@@ -947,6 +945,8 @@ static int __init amd_iommu_v2_init(void)
 
 	amd_iommu_register_ppr_notifier(&ppr_nb);
 
+	pr_info("AMD IOMMUv2 loaded and initialized\n");
+
 	return 0;
 
 out:
-- 
2.33.1