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From: John Garry <john.garry@huawei.com>
To: Randy Dunlap <rdunlap@infradead.org>, <joro@8bytes.org>,
	<will@kernel.org>, <dwmw2@infradead.org>,
	<baolu.lu@linux.intel.com>, <robin.murphy@arm.com>
Cc: <linux-kernel@vger.kernel.org>,
	<iommu@lists.linux-foundation.org>, <linuxarm@huawei.com>,
	<thunder.leizhen@huawei.com>, <chenxiang66@hisilicon.com>
Subject: Re: [PATCH v10 1/3] iommu: Enhance IOMMU default DMA mode build options
Date: Thu, 3 Jun 2021 18:04:46 +0100	[thread overview]
Message-ID: <18764b43-6c60-eb6d-783f-b7d4fe146b8e@huawei.com> (raw)
In-Reply-To: <c8107ae9-b099-459f-eea4-b9b5a0929ee2@infradead.org>

On 03/06/2021 18:00, Randy Dunlap wrote:
>> +config IOMMU_DEFAULT_STRICT
>> +	bool "strict"
>> +	help
>> +	  For every IOMMU DMA unmap operation, the flush operation of IOTLB and
>> +	  the free operation of IOVA are guaranteed to be done in the unmap
>> +	  function.
>> +
>> +	  This mode is safer than the two above, but it maybe slower in some
> There don't seem to be two above?
> 

Right, it's a remnant from a previous version - will fix, pending other 
reviews

>> +	  high performace scenarios.
> 	       performance
> 

ok

>> +
>> +endchoice

Thanks!

WARNING: multiple messages have this Message-ID
From: John Garry <john.garry@huawei.com>
To: Randy Dunlap <rdunlap@infradead.org>, <joro@8bytes.org>,
	<will@kernel.org>, <dwmw2@infradead.org>,
	<baolu.lu@linux.intel.com>, <robin.murphy@arm.com>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	linuxarm@huawei.com
Subject: Re: [PATCH v10 1/3] iommu: Enhance IOMMU default DMA mode build options
Date: Thu, 3 Jun 2021 18:04:46 +0100	[thread overview]
Message-ID: <18764b43-6c60-eb6d-783f-b7d4fe146b8e@huawei.com> (raw)
In-Reply-To: <c8107ae9-b099-459f-eea4-b9b5a0929ee2@infradead.org>

On 03/06/2021 18:00, Randy Dunlap wrote:
>> +config IOMMU_DEFAULT_STRICT
>> +	bool "strict"
>> +	help
>> +	  For every IOMMU DMA unmap operation, the flush operation of IOTLB and
>> +	  the free operation of IOVA are guaranteed to be done in the unmap
>> +	  function.
>> +
>> +	  This mode is safer than the two above, but it maybe slower in some
> There don't seem to be two above?
> 

Right, it's a remnant from a previous version - will fix, pending other 
reviews

>> +	  high performace scenarios.
> 	       performance
> 

ok

>> +
>> +endchoice

Thanks!
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  reply	other threads:[~2021-06-03 17:04 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-03 13:58 [PATCH v10 0/3] Enhance IOMMU default DMA mode build options John Garry
2021-06-03 13:58 ` John Garry
2021-06-03 13:58 ` [PATCH v10 1/3] iommu: " John Garry
2021-06-03 13:58   ` John Garry
2021-06-03 17:00   ` Randy Dunlap
2021-06-03 17:00     ` Randy Dunlap
2021-06-03 17:04     ` John Garry [this message]
2021-06-03 17:04       ` John Garry
2021-06-04  2:54   ` Leizhen (ThunderTown)
2021-06-04  2:54     ` Leizhen (ThunderTown)
2021-06-04  8:19     ` John Garry
2021-06-04  8:19       ` John Garry
2021-06-03 13:58 ` [PATCH v10 2/3] iommu/vt-d: Add support for " John Garry
2021-06-03 13:58   ` John Garry
2021-06-03 13:58 ` [PATCH v10 3/3] iommu/amd: " John Garry
2021-06-03 13:58   ` John Garry

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