From: Ashish Mhetre via iommu <iommu@lists.linux-foundation.org>
To: <robin.murphy@arm.com>, <will@kernel.org>, <vdumpa@nvidia.com>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [Patch V2 0/2] iommu/arm-smmu: Fix races in iommu domain/group creation
Date: Thu, 15 Jul 2021 10:14:04 +0530 [thread overview]
Message-ID: <984e45e9-5dc0-fcdc-fa60-179faccb3715@nvidia.com> (raw)
In-Reply-To: <1623961837-12540-1-git-send-email-amhetre@nvidia.com>
On 6/18/2021 2:00 AM, Ashish Mhetre wrote:
> Multiple iommu domains and iommu groups are getting created for the devices
> sharing same SID. It is expected for devices sharing same SID to be in same
> iommu group and same iommu domain.
> This is leading to context faults when one device is accessing IOVA from
> other device which shouldn't be the case for devices sharing same SID.
> Fix this by protecting iommu domain and iommu group creation with mutexes.
>
> Ashish Mhetre (1):
> iommu: Fix race condition during default domain allocation
>
> Krishna Reddy (1):
> iommu/arm-smmu: Fix race condition during iommu_group creation
>
> drivers/iommu/arm/arm-smmu/arm-smmu.c | 6 +++++-
> drivers/iommu/iommu.c | 2 ++
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
Hi,
Can you please help in reviewing this V2 change? Please let me know if
anymore changes are required.
Thanks,
Ashish Mhetre
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next prev parent reply other threads:[~2021-07-15 4:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 20:30 [Patch V2 0/2] iommu/arm-smmu: Fix races in iommu domain/group creation Ashish Mhetre
2021-06-17 20:30 ` [Patch V2 1/2] iommu: Fix race condition during default domain allocation Ashish Mhetre
2021-06-17 20:30 ` [Patch V2 2/2] iommu/arm-smmu: Fix race condition during iommu_group creation Ashish Mhetre
2021-07-15 4:44 ` Ashish Mhetre via iommu [this message]
2021-08-02 15:16 ` [Patch V2 0/2] iommu/arm-smmu: Fix races in iommu domain/group creation Will Deacon
2021-08-02 15:46 ` Robin Murphy
2021-08-09 14:54 ` Will Deacon
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