From: Lu Baolu <baolu.lu@linux.intel.com>
To: Robin Murphy <robin.murphy@arm.com>, joro@8bytes.org, will@kernel.org
Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, suravee.suthikulpanit@amd.com,
john.garry@huawei.com, dianders@chromium.org
Subject: Re: [PATCH 18/23] iommu: Express DMA strictness via the domain type
Date: Mon, 26 Jul 2021 19:31:30 +0800 [thread overview]
Message-ID: <832b7db0-4eb2-9151-c2b3-db709aee3230@linux.intel.com> (raw)
In-Reply-To: <77057c4b-479b-c5b8-4666-f16e294552d1@arm.com>
On 2021/7/26 16:27, Robin Murphy wrote:
> On 2021-07-24 06:29, Lu Baolu wrote:
>> Hi Robin,
>>
>> On 2021/7/22 2:20, Robin Murphy wrote:
>>> Eliminate the iommu_get_dma_strict() indirection and pipe the
>>> information through the domain type from the beginning. Besides
>>> the flow simplification this also has several nice side-effects:
>>>
>>> - Automatically implies strict mode for untrusted devices by
>>> virtue of their IOMMU_DOMAIN_DMA override.
>>> - Ensures that we only ends up using flush queues for drivers
>>> which are aware of them and can actually benefit.
>>
>> Is this expressed by vendor iommu driver has ops->flush_iotlb_all?
>
> No, it's literally whether ->domain_alloc accepts the DMA_DOMAIN_FQ type
> or not.
Get it. Thank you!
Best regards,
baolu
WARNING: multiple messages have this Message-ID (diff)
From: Lu Baolu <baolu.lu@linux.intel.com>
To: Robin Murphy <robin.murphy@arm.com>, joro@8bytes.org, will@kernel.org
Cc: linux-kernel@vger.kernel.org, dianders@chromium.org,
iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 18/23] iommu: Express DMA strictness via the domain type
Date: Mon, 26 Jul 2021 19:31:30 +0800 [thread overview]
Message-ID: <832b7db0-4eb2-9151-c2b3-db709aee3230@linux.intel.com> (raw)
In-Reply-To: <77057c4b-479b-c5b8-4666-f16e294552d1@arm.com>
On 2021/7/26 16:27, Robin Murphy wrote:
> On 2021-07-24 06:29, Lu Baolu wrote:
>> Hi Robin,
>>
>> On 2021/7/22 2:20, Robin Murphy wrote:
>>> Eliminate the iommu_get_dma_strict() indirection and pipe the
>>> information through the domain type from the beginning. Besides
>>> the flow simplification this also has several nice side-effects:
>>>
>>> - Automatically implies strict mode for untrusted devices by
>>> virtue of their IOMMU_DOMAIN_DMA override.
>>> - Ensures that we only ends up using flush queues for drivers
>>> which are aware of them and can actually benefit.
>>
>> Is this expressed by vendor iommu driver has ops->flush_iotlb_all?
>
> No, it's literally whether ->domain_alloc accepts the DMA_DOMAIN_FQ type
> or not.
Get it. Thank you!
Best regards,
baolu
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Lu Baolu <baolu.lu@linux.intel.com>
To: Robin Murphy <robin.murphy@arm.com>, joro@8bytes.org, will@kernel.org
Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, suravee.suthikulpanit@amd.com,
john.garry@huawei.com, dianders@chromium.org
Subject: Re: [PATCH 18/23] iommu: Express DMA strictness via the domain type
Date: Mon, 26 Jul 2021 19:31:30 +0800 [thread overview]
Message-ID: <832b7db0-4eb2-9151-c2b3-db709aee3230@linux.intel.com> (raw)
In-Reply-To: <77057c4b-479b-c5b8-4666-f16e294552d1@arm.com>
On 2021/7/26 16:27, Robin Murphy wrote:
> On 2021-07-24 06:29, Lu Baolu wrote:
>> Hi Robin,
>>
>> On 2021/7/22 2:20, Robin Murphy wrote:
>>> Eliminate the iommu_get_dma_strict() indirection and pipe the
>>> information through the domain type from the beginning. Besides
>>> the flow simplification this also has several nice side-effects:
>>>
>>> - Automatically implies strict mode for untrusted devices by
>>> virtue of their IOMMU_DOMAIN_DMA override.
>>> - Ensures that we only ends up using flush queues for drivers
>>> which are aware of them and can actually benefit.
>>
>> Is this expressed by vendor iommu driver has ops->flush_iotlb_all?
>
> No, it's literally whether ->domain_alloc accepts the DMA_DOMAIN_FQ type
> or not.
Get it. Thank you!
Best regards,
baolu
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-07-26 11:31 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 18:20 [PATCH 00/23] iommu: Refactor DMA domain strictness Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 01/23] iommu: Pull IOVA cookie management into the core Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 02/23] iommu/amd: Drop IOVA cookie management Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 03/23] iommu/arm-smmu: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 04/23] iommu/vt-d: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 05/23] iommu/exynos: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 06/23] iommu/ipmmu-vmsa: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 07/23] iommu/mtk: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 08/23] iommu/rockchip: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 09/23] iommu/sprd: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 10/23] iommu/sun50i: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 11/23] iommu/virtio: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 12/23] iommu/dma: Unexport " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 13/23] iommu/dma: Remove redundant "!dev" checks Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-26 8:28 ` John Garry
2021-07-26 8:28 ` John Garry
2021-07-26 8:28 ` John Garry
2021-07-21 18:20 ` [PATCH 14/23] iommu: Introduce explicit type for non-strict DMA domains Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 15/23] iommu/amd: Prepare for multiple DMA domain types Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 16/23] iommu/arm-smmu: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-26 12:46 ` Joerg Roedel
2021-07-26 12:46 ` Joerg Roedel
2021-07-26 12:46 ` Joerg Roedel
2021-07-26 13:09 ` Robin Murphy
2021-07-26 13:09 ` Robin Murphy
2021-07-26 13:09 ` Robin Murphy
2021-07-26 18:43 ` Joerg Roedel
2021-07-26 18:43 ` Joerg Roedel
2021-07-26 18:43 ` Joerg Roedel
2021-07-21 18:20 ` [PATCH 17/23] iommu/vt-d: " Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-22 16:44 ` kernel test robot
2021-07-22 16:44 ` kernel test robot
2021-07-22 16:44 ` kernel test robot
2021-07-22 16:44 ` kernel test robot
2021-07-22 17:30 ` Robin Murphy
2021-07-22 17:30 ` Robin Murphy
2021-07-22 17:30 ` Robin Murphy
2021-07-22 17:30 ` Robin Murphy
2021-07-22 18:44 ` kernel test robot
2021-07-22 18:44 ` kernel test robot
2021-07-22 18:44 ` kernel test robot
2021-07-22 18:44 ` kernel test robot
2021-07-24 5:23 ` Lu Baolu
2021-07-24 5:23 ` Lu Baolu
2021-07-24 5:23 ` Lu Baolu
2021-07-26 8:30 ` Robin Murphy
2021-07-26 8:30 ` Robin Murphy
2021-07-26 8:30 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 18/23] iommu: Express DMA strictness via the domain type Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-24 5:29 ` Lu Baolu
2021-07-24 5:29 ` Lu Baolu
2021-07-24 5:29 ` Lu Baolu
2021-07-26 8:27 ` Robin Murphy
2021-07-26 8:27 ` Robin Murphy
2021-07-26 8:27 ` Robin Murphy
2021-07-26 11:31 ` Lu Baolu [this message]
2021-07-26 11:31 ` Lu Baolu
2021-07-26 11:31 ` Lu Baolu
2021-07-26 12:29 ` Lu Baolu
2021-07-26 12:29 ` Lu Baolu
2021-07-26 12:29 ` Lu Baolu
2021-07-26 12:43 ` Robin Murphy
2021-07-26 12:43 ` Robin Murphy
2021-07-26 12:43 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 19/23] iommu: Expose DMA domain strictness via sysfs Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 20/23] iommu: Allow choosing DMA strictness at build time Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 21/23] iommu/dma: Factor out flush queue init Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 22/23] iommu: Allow enabling non-strict mode dynamically Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 23/23] iommu/arm-smmu: Allow non-strict in pgtable_quirks interface Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-21 18:20 ` Robin Murphy
2021-07-26 8:13 ` [PATCH 00/23] iommu: Refactor DMA domain strictness John Garry
2021-07-26 8:13 ` John Garry
2021-07-26 8:13 ` John Garry
2021-07-26 12:06 ` Robin Murphy
2021-07-26 12:06 ` Robin Murphy
2021-07-26 12:06 ` Robin Murphy
2021-07-26 13:02 ` Joerg Roedel
2021-07-26 13:02 ` Joerg Roedel
2021-07-26 13:02 ` Joerg Roedel
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