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Message-ID: <8fccb0fd-a7ea-dc2c-5604-eef3c93f0397@linaro.org>
Date:   Tue, 12 Jul 2022 18:21:06 +0200
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Subject: Re: [PATCH v2 3/7] iommu/exynos: Set correct dma mask for SysMMU v5+
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To:     Sam Protsenko <semen.protsenko@linaro.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>
Cc:     Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Janghyuck Kim <janghyuck.kim@samsung.com>,
        Cho KyongHo <pullip.cho@samsung.com>,
        Daniel Mentz <danielmentz@google.com>,
        David Virag <virag.david003@gmail.com>,
        Sumit Semwal <sumit.semwal@linaro.org>, iommu@lists.linux.dev,
        linux-arm-kernel@lists.infradead.org,
        linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20220710230603.13526-1-semen.protsenko@linaro.org>
 <20220710230603.13526-4-semen.protsenko@linaro.org>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20220710230603.13526-4-semen.protsenko@linaro.org>
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On 11/07/2022 01:05, Sam Protsenko wrote:
> SysMMU v5+ supports 36 bit physical address space. Set corresponding DMA
> mask to avoid falling back to SWTLBIO usage in dma_map_single() because
> of failed dma_capable() check.
> 
> The original code for this fix was suggested by Marek.
> 
> Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
> Co-developed-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


Best regards,
Krzysztof