From: "Leizhen (ThunderTown)" <thunder.leizhen@huawei.com>
To: Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
iommu <iommu@lists.linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Yang Yingliang <yangyingliang@huawei.com>
Subject: Re: [PATCH 1/1] iommu/arm-smmu-v3: add support for BBML
Date: Wed, 27 Jan 2021 10:01:34 +0800 [thread overview]
Message-ID: <8a9685ec-67aa-824f-5429-f408bf79c5ab@huawei.com> (raw)
In-Reply-To: <20210126101230.GA29204@willie-the-truck>
On 2021/1/26 18:12, Will Deacon wrote:
> On Mon, Jan 25, 2021 at 08:23:40PM +0000, Robin Murphy wrote:
>> Now we probably will need some degreee of BBML feature awareness for the
>> sake of SVA if and when we start using it for CPU pagetables, but I still
>> cannot see any need to consider it in io-pgtable.
>
> Agreed; I don't think this is something that io-pgtable should have to care
> about.
Yes, the SVA works in stall mode, and the failed device access requests are not
discarded.
Let me look for examples. The BBML usage scenario was told by a former colleague.
>
> Will
>
> .
>
next prev parent reply other threads:[~2021-01-27 5:59 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 3:42 [PATCH 1/1] iommu/arm-smmu-v3: add support for BBML Zhen Lei
2021-01-22 12:51 ` Will Deacon
2021-01-22 13:00 ` Robin Murphy
2021-01-22 13:21 ` Leizhen (ThunderTown)
2021-01-22 13:26 ` Will Deacon
2021-01-23 10:20 ` Leizhen (ThunderTown)
2021-01-25 19:54 ` Robin Murphy
2021-01-23 10:08 ` Leizhen (ThunderTown)
2021-01-25 20:23 ` Robin Murphy
2021-01-26 10:12 ` Will Deacon
2021-01-27 2:01 ` Leizhen (ThunderTown) [this message]
2021-01-27 7:36 ` Keqian Zhu
2021-01-27 9:39 ` Robin Murphy
2021-01-28 15:18 ` Keqian Zhu
2021-01-28 16:17 ` Robin Murphy
2021-01-29 6:12 ` Keqian Zhu
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