linux-kernel - [PATCHv7 02/26] iommu: add capability IOMMU_CAP

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Message-Id: <1411483586-29304-3-git-send-email-a.motakis@virtualopensystems.com>
Date:	Tue, 23 Sep 2014 16:46:01 +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, kvm@...r.kernel.org,
	christoffer.dall@...aro.org, will.deacon@....com,
	kim.phillips@...escale.com, eric.auger@...aro.org,
	marc.zyngier@....com,
	Antonios Motakis <a.motakis@...tualopensystems.com>,
	Joerg Roedel <jroedel@...e.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Shuah Khan <shuah.kh@...sung.com>,
	Thierry Reding <treding@...dia.com>,
	Alexey Kardashevskiy <aik@...abs.ru>,
	"Upinder Malhi (umalhi)" <umalhi@...co.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCHv7 02/26] iommu: add capability IOMMU_CAP_NOEXEC

Some IOMMUs accept an IOMMU_NOEXEC protection flag in addition to
IOMMU_READ and IOMMU_WRITE. Expose this as an IOMMU capability.

Signed-off-by: Antonios Motakis <a.motakis@...tualopensystems.com>
---
 include/linux/iommu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index e1a644c..0433553 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -59,6 +59,7 @@ struct iommu_domain {
 
 #define IOMMU_CAP_CACHE_COHERENCY	0x1
 #define IOMMU_CAP_INTR_REMAP		0x2	/* isolates device intrs */
+#define IOMMU_CAP_NOEXEC		0x3	/* IOMMU_NOEXEC flag */
 
 /*
  * Following constraints are specifc to FSL_PAMUV1:
-- 
1.8.3.2

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