linux-kernel - Re: [PATCH v2 5/7] iommu/exynos: Check if SysMMU v7 has VM registers

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Message-ID: <CAPLW+4kbCfjCqLGhsUUhf3Uzu3xkzoGT76+7LKFVA3Y3ozH6hg@mail.gmail.com>
Date:   Thu, 14 Jul 2022 16:25:06 +0300
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Janghyuck Kim <janghyuck.kim@...sung.com>,
        Cho KyongHo <pullip.cho@...sung.com>,
        Daniel Mentz <danielmentz@...gle.com>,
        David Virag <virag.david003@...il.com>,
        Sumit Semwal <sumit.semwal@...aro.org>, iommu@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/7] iommu/exynos: Check if SysMMU v7 has VM registers

On Tue, 12 Jul 2022 at 18:47, Marek Szyprowski <m.szyprowski@...sung.com> wrote:
>
>
> On 11.07.2022 01:06, Sam Protsenko wrote:
> > SysMMU v7 can have Virtual Machine registers, which implement multiple
> > translation domains. The driver should know if it's true or not, as VM
> > registers shouldn't be accessed if not present. Read corresponding
> > capabilities register to obtain that info, and store it in driver data.
> >
> > Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
>
> I would merge this with the next one. Imho this change doesn't make much
> sense on it's own.
>

Will do in v2, thanks!

[snip]

>
> Best regards
> --
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
>