linux-kernel - [RFC PATCH v6 04/20] iommu/arm-smmu: add capability IOMMU_CAP_INTR

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Message-Id: <1401987808-23596-5-git-send-email-a.motakis@virtualopensystems.com>
Date:	Thu,  5 Jun 2014 19:03:12 +0200
From:	Antonios Motakis <a.motakis@...tualopensystems.com>
To:	alex.williamson@...hat.com, kvmarm@...ts.cs.columbia.edu,
	iommu@...ts.linux-foundation.org
Cc:	tech@...tualopensystems.com, a.rigo@...tualopensystems.com,
	kvm@...r.kernel.org, christoffer.dall@...aro.org,
	will.deacon@....com, kim.phillips@...escale.com,
	stuart.yoder@...escale.com, eric.auger@...aro.org,
	Antonios Motakis <a.motakis@...tualopensystems.com>,
	Joerg Roedel <joro@...tes.org>,
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM SMMU DRIVER),
	linux-kernel@...r.kernel.org (open list)
Subject: [RFC PATCH v6 04/20] iommu/arm-smmu: add capability IOMMU_CAP_INTR_REMAP

With an ARM SMMU, interrupt remapping should always be safe from the
SMMU's point of view, as it is properly handled by the GIC.

Signed-off-by: Antonios Motakis <a.motakis@...tualopensystems.com>
---
 drivers/iommu/arm-smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 15ab2af..ff29402 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1544,7 +1544,7 @@ static int arm_smmu_domain_has_cap(struct iommu_domain *domain,
 	if (smmu_domain->root_cfg.smmu->features & ARM_SMMU_FEAT_COHERENT_WALK)
 		caps |= IOMMU_CAP_CACHE_COHERENCY;
 
-	caps |= IOMMU_CAP_NOEXEC;
+	caps |= IOMMU_CAP_NOEXEC | IOMMU_CAP_INTR_REMAP;
 
 	return !!(cap & caps);
 }
-- 
1.8.3.2

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