linux-kernel - [PATCH v7 10/10] iommu/arm-smmu: call iommu_free_reserved_iova

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1461084994-2355-11-git-send-email-eric.auger@linaro.org>
Date:	Tue, 19 Apr 2016 16:56:34 +0000
From:	Eric Auger <eric.auger@...aro.org>
To:	eric.auger@...com, eric.auger@...aro.org, robin.murphy@....com,
	alex.williamson@...hat.com, will.deacon@....com, joro@...tes.org,
	tglx@...utronix.de, jason@...edaemon.net, marc.zyngier@....com,
	christoffer.dall@...aro.org, linux-arm-kernel@...ts.infradead.org
Cc:	patches@...aro.org, linux-kernel@...r.kernel.org,
	Bharat.Bhushan@...escale.com, pranav.sawargaonkar@...il.com,
	p.fedin@...sung.com, iommu@...ts.linux-foundation.org,
	Jean-Philippe.Brucker@....com, julien.grall@....com
Subject: [PATCH v7 10/10] iommu/arm-smmu: call iommu_free_reserved_iova_domain on domain destruction

When the domain gets destroyed, let's make sure all reserved iova
resources get released.

Choice is made to put that call in arm-smmu(-v3).c to do something similar
to what was done for iommu_put_dma_cookie.

Signed-off-by: Eric Auger <eric.auger@...aro.org>

---

v7: new
---
 drivers/iommu/arm-smmu-v3.c | 2 ++
 drivers/iommu/arm-smmu.c    | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index a077a35..afd0dac 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -22,6 +22,7 @@
 
 #include <linux/delay.h>
 #include <linux/dma-iommu.h>
+#include <linux/dma-reserved-iommu.h>
 #include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/iommu.h>
@@ -1444,6 +1445,7 @@ static void arm_smmu_domain_free(struct iommu_domain *domain)
 	struct arm_smmu_device *smmu = smmu_domain->smmu;
 
 	iommu_put_dma_cookie(domain);
+	iommu_free_reserved_iova_domain(domain);
 	free_io_pgtable_ops(smmu_domain->pgtbl_ops);
 
 	/* Free the CD and ASID, if we allocated them */
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 8cd7b8a..492339f 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -30,6 +30,7 @@
 
 #include <linux/delay.h>
 #include <linux/dma-iommu.h>
+#include <linux/dma-reserved-iommu.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
 #include <linux/interrupt.h>
@@ -1009,6 +1010,7 @@ static void arm_smmu_domain_free(struct iommu_domain *domain)
 	 * already been detached.
 	 */
 	iommu_put_dma_cookie(domain);
+	iommu_free_reserved_iova_domain(domain);
 	arm_smmu_destroy_domain_context(domain);
 	kfree(smmu_domain);
 }
-- 
1.9.1