linux-kernel - [PATCH 3/5] iommu/arm-smmu-v3: add IOMMU_CAP

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Date:   Wed, 19 Jul 2017 15:03:56 +0530
From:   Anup Patel <anup.patel@...adcom.com>
To:     Will Deacon <will.deacon@....com>,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Baptiste Reynal <b.reynal@...tualopensystems.com>,
        Alex Williamson <alex.williamson@...hat.com>
Cc:     Scott Branden <sbranden@...adcom.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, kvm@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Anup Patel <anup.patel@...adcom.com>
Subject: [PATCH 3/5] iommu/arm-smmu-v3: add IOMMU_CAP_BYPASS to the ARM SMMUv3 driver

The ARM SMMUv3 support bypassing transactions for which domain
is not configured. The patch adds corresponding IOMMU capability
to advertise this fact.

Signed-off-by: Anup Patel <anup.patel@...adcom.com>
---
 drivers/iommu/arm-smmu-v3.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 568c400..a6c7f66 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1423,6 +1423,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
 		return true;
 	case IOMMU_CAP_NOEXEC:
 		return true;
+	case IOMMU_CAP_BYPASS:
+		return true;
 	default:
 		return false;
 	}
-- 
2.7.4