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!
next prev parent reply other threads:[~2021-06-03 17:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 13:58 [PATCH v10 0/3] " John Garry
2021-06-03 13:58 ` [PATCH v10 1/3] iommu: " John Garry
2021-06-03 17:00 ` Randy Dunlap
2021-06-03 17:04 ` John Garry [this message]
2021-06-04 2:54 ` Leizhen (ThunderTown)
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 ` [PATCH v10 3/3] iommu/amd: " John Garry
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