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From: Joerg Roedel <joro@8bytes.org>
To: Joerg Roedel <joro@8bytes.org>
Cc: Thomas.Lendacky@amd.com, Joerg Roedel <jroedel@suse.de>,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	bp@alien8.de
Subject: [PATCH 2/3] iommu: Set default domain type at runtime
Date: Fri,  9 Aug 2019 17:22:32 +0200	[thread overview]
Message-ID: <20190809152233.2829-3-joro@8bytes.org> (raw)
In-Reply-To: <20190809152233.2829-1-joro@8bytes.org>

From: Joerg Roedel <jroedel@suse.de>

Set the default domain-type at runtime, not at compile-time.
This keeps default domain type setting in one place when we
have to change it at runtime.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/iommu.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b57ce00c1310..62cae6db0970 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -26,11 +26,8 @@
 
 static struct kset *iommu_group_kset;
 static DEFINE_IDA(iommu_group_ida);
-#ifdef CONFIG_IOMMU_DEFAULT_PASSTHROUGH
-static unsigned int iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY;
-#else
-static unsigned int iommu_def_domain_type = IOMMU_DOMAIN_DMA;
-#endif
+
+static unsigned int iommu_def_domain_type __read_mostly;
 static bool iommu_dma_strict __read_mostly = true;
 
 struct iommu_group {
@@ -102,6 +99,11 @@ static const char *iommu_domain_type_str(unsigned int t)
 
 static int __init iommu_subsys_init(void)
 {
+	if (IS_ENABLED(CONFIG_IOMMU_DEFAULT_PASSTHROUGH))
+		iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY;
+	else
+		iommu_def_domain_type = IOMMU_DOMAIN_DMA;
+
 	pr_info("Default domain type: %s\n",
 		iommu_domain_type_str(iommu_def_domain_type));
 
-- 
2.17.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Joerg Roedel <joro@8bytes.org>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	Thomas.Lendacky@amd.com, Suravee.Suthikulpanit@amd.com,
	bp@alien8.de, Joerg Roedel <jroedel@suse.de>
Subject: [PATCH 2/3] iommu: Set default domain type at runtime
Date: Fri,  9 Aug 2019 17:22:32 +0200	[thread overview]
Message-ID: <20190809152233.2829-3-joro@8bytes.org> (raw)
In-Reply-To: <20190809152233.2829-1-joro@8bytes.org>

From: Joerg Roedel <jroedel@suse.de>

Set the default domain-type at runtime, not at compile-time.
This keeps default domain type setting in one place when we
have to change it at runtime.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/iommu.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b57ce00c1310..62cae6db0970 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -26,11 +26,8 @@
 
 static struct kset *iommu_group_kset;
 static DEFINE_IDA(iommu_group_ida);
-#ifdef CONFIG_IOMMU_DEFAULT_PASSTHROUGH
-static unsigned int iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY;
-#else
-static unsigned int iommu_def_domain_type = IOMMU_DOMAIN_DMA;
-#endif
+
+static unsigned int iommu_def_domain_type __read_mostly;
 static bool iommu_dma_strict __read_mostly = true;
 
 struct iommu_group {
@@ -102,6 +99,11 @@ static const char *iommu_domain_type_str(unsigned int t)
 
 static int __init iommu_subsys_init(void)
 {
+	if (IS_ENABLED(CONFIG_IOMMU_DEFAULT_PASSTHROUGH))
+		iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY;
+	else
+		iommu_def_domain_type = IOMMU_DOMAIN_DMA;
+
 	pr_info("Default domain type: %s\n",
 		iommu_domain_type_str(iommu_def_domain_type));
 
-- 
2.17.1


  parent reply	other threads:[~2019-08-09 15:22 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-09 15:22 [PATCH 0/3] Disable IOMMU Passthrough when SME is active Joerg Roedel
2019-08-09 15:22 ` Joerg Roedel
2019-08-09 15:22 ` [PATCH 1/3] iommu: Print default domain type on boot Joerg Roedel
2019-08-09 15:22   ` Joerg Roedel
2019-08-09 15:22 ` Joerg Roedel [this message]
2019-08-09 15:22   ` [PATCH 2/3] iommu: Set default domain type at runtime Joerg Roedel
2019-08-09 15:22 ` [PATCH 3/3] iommu: Disable passthrough mode when SME is active Joerg Roedel
2019-08-09 15:22   ` Joerg Roedel
2019-08-09 16:50   ` Lendacky, Thomas
2019-08-09 16:50     ` Lendacky, Thomas
2019-08-09 20:32     ` Joerg Roedel
2019-08-09 20:32       ` Joerg Roedel

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