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From: John Garry <john.garry@huawei.com>
To: <joro@8bytes.org>, <will@kernel.org>
Cc: iommu@lists.linux-foundation.org, robin.murphy@arm.com,
	linux-kernel@vger.kernel.org, hch@lst.de
Subject: [PATCH] iommu: Print default strict or lazy mode at init time
Date: Fri, 28 May 2021 21:37:54 +0800	[thread overview]
Message-ID: <1622209074-37899-1-git-send-email-john.garry@huawei.com> (raw)

As well as the default domain type, it's useful to know whether strict
or lazy mode is default for DMA domains, so add this info in a separate
print.

Signed-off-by: John Garry <john.garry@huawei.com>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 808ab70d5df5..f25fae62f077 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -138,6 +138,11 @@ static int __init iommu_subsys_init(void)
 		(iommu_cmd_line & IOMMU_CMD_LINE_DMA_API) ?
 			"(set via kernel command line)" : "");
 
+	pr_info("Default DMA domain mode: %s %s\n",
+		iommu_dma_strict ? "strict" : "lazy",
+		(iommu_cmd_line & IOMMU_CMD_LINE_STRICT) ?
+			"(set via kernel command line)" : "");
+
 	return 0;
 }
 subsys_initcall(iommu_subsys_init);
-- 
2.26.2

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             reply	other threads:[~2021-05-28 13:42 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-28 13:37 John Garry [this message]
2021-06-01  9:09 ` [PATCH] iommu: Print default strict or lazy mode at init time Robin Murphy
2021-06-01 15:50   ` John Garry
2021-06-01 16:42     ` Robin Murphy
2021-06-01 17:44       ` John Garry

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