From: John Garry <john.garry@huawei.com>
To: <joro@8bytes.org>, <will@kernel.org>, <dwmw2@infradead.org>,
<baolu.lu@linux.intel.com>, <robin.murphy@arm.com>
Cc: <linux-kernel@vger.kernel.org>,
<iommu@lists.linux-foundation.org>, <linuxarm@huawei.com>,
<thunder.leizhen@huawei.com>, <chenxiang66@hisilicon.com>,
<rdunlap@infradead.org>, John Garry <john.garry@huawei.com>
Subject: [PATCH v11 2/3] iommu/vt-d: Add support for IOMMU default DMA mode build options
Date: Tue, 8 Jun 2021 21:18:27 +0800 [thread overview]
Message-ID: <1623158308-180604-3-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1623158308-180604-1-git-send-email-john.garry@huawei.com>
From: Zhen Lei <thunder.leizhen@huawei.com>
Make IOMMU_DEFAULT_LAZY default for when INTEL_IOMMU config is set,
and make intel_iommu_strict initially hold value of
IS_ENABLED(CONFIG_IOMMU_DEFAULT_STRICT).
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/iommu/Kconfig | 1 +
drivers/iommu/intel/iommu.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 369a3af9e5bf..b68ec7ed23c0 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -95,6 +95,7 @@ choice
depends on IOMMU_API
depends on X86 || IA64 || X86_64 || ARM || ARM64
+ default IOMMU_DEFAULT_LAZY if INTEL_IOMMU
default IOMMU_DEFAULT_STRICT
help
This option allows an IOMMU DMA mode to be chosen at build time, to
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index be35284a2016..fe33347f4a1e 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -360,7 +360,7 @@ int intel_iommu_enabled = 0;
EXPORT_SYMBOL_GPL(intel_iommu_enabled);
static int dmar_map_gfx = 1;
-static int intel_iommu_strict;
+static int intel_iommu_strict = IS_ENABLED(CONFIG_IOMMU_DEFAULT_STRICT);
static int intel_iommu_superpage = 1;
static int iommu_identity_mapping;
static int iommu_skip_te_disable;
--
2.26.2
next prev parent reply other threads:[~2021-06-08 13:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 13:18 [PATCH v11 0/3] Enhance " John Garry
2021-06-08 13:18 ` [PATCH v11 1/3] iommu: " John Garry
2021-06-09 15:03 ` Robin Murphy
2021-06-09 15:24 ` John Garry
2021-06-08 13:18 ` John Garry [this message]
2021-06-08 13:18 ` [PATCH v11 3/3] iommu/amd: Add support for " John Garry
2021-06-09 8:15 ` [PATCH v11 0/3] Enhance " Joerg Roedel
2021-06-10 16:25 ` John Garry
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