From: Christoph Hellwig <hch@infradead.org>
To: Mikko Perttunen <mperttunen@nvidia.com>
Cc: thierry.reding@gmail.com, jonathanh@nvidia.com, joro@8bytes.org,
will@kernel.org, robh+dt@kernel.org, robin.murphy@arm.com,
linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code
Date: Tue, 22 Feb 2022 08:24:09 -0800 [thread overview]
Message-ID: <YhUOKaoCA7dyAZAh@infradead.org> (raw)
In-Reply-To: <20220218113952.3077606-4-mperttunen@nvidia.com>
On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote:
> +
> +/*
> + * Due to an issue with T194 NVENC, only 38 bits can be used.
> + * Anyway, 256GiB of IOVA ought to be enough for anyone.
> + */
> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38);
You need a mask per device. Please don't share the same variable
for multiple masks.
> +EXPORT_SYMBOL(host1x_context_alloc);
All this low-level code really should be EXPORT_SYMBOL_GPL.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Mikko Perttunen <mperttunen@nvidia.com>
Cc: devicetree@vger.kernel.org, will@kernel.org,
linux-kernel@vger.kernel.org, robh+dt@kernel.org,
jonathanh@nvidia.com, iommu@lists.linux-foundation.org,
thierry.reding@gmail.com, dri-devel@lists.freedesktop.org,
linux-tegra@vger.kernel.org, robin.murphy@arm.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code
Date: Tue, 22 Feb 2022 08:24:09 -0800 [thread overview]
Message-ID: <YhUOKaoCA7dyAZAh@infradead.org> (raw)
In-Reply-To: <20220218113952.3077606-4-mperttunen@nvidia.com>
On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote:
> +
> +/*
> + * Due to an issue with T194 NVENC, only 38 bits can be used.
> + * Anyway, 256GiB of IOVA ought to be enough for anyone.
> + */
> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38);
You need a mask per device. Please don't share the same variable
for multiple masks.
> +EXPORT_SYMBOL(host1x_context_alloc);
All this low-level code really should be EXPORT_SYMBOL_GPL.
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Mikko Perttunen <mperttunen@nvidia.com>
Cc: thierry.reding@gmail.com, jonathanh@nvidia.com, joro@8bytes.org,
will@kernel.org, robh+dt@kernel.org, robin.murphy@arm.com,
linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code
Date: Tue, 22 Feb 2022 08:24:09 -0800 [thread overview]
Message-ID: <YhUOKaoCA7dyAZAh@infradead.org> (raw)
In-Reply-To: <20220218113952.3077606-4-mperttunen@nvidia.com>
On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote:
> +
> +/*
> + * Due to an issue with T194 NVENC, only 38 bits can be used.
> + * Anyway, 256GiB of IOVA ought to be enough for anyone.
> + */
> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38);
You need a mask per device. Please don't share the same variable
for multiple masks.
> +EXPORT_SYMBOL(host1x_context_alloc);
All this low-level code really should be EXPORT_SYMBOL_GPL.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-02-22 16:24 UTC|newest]
Thread overview: 147+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-18 11:39 [PATCH v3 0/9] Host1x context isolation support Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 1/9] dt-bindings: host1x: Add memory-contexts property Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-21 15:23 ` Robin Murphy
2022-02-21 15:23 ` Robin Murphy
2022-02-21 15:23 ` Robin Murphy
2022-02-21 15:28 ` Mikko Perttunen
2022-02-21 15:28 ` Mikko Perttunen
2022-02-21 15:28 ` Mikko Perttunen
2022-02-21 16:58 ` Robin Murphy
2022-02-21 16:58 ` Robin Murphy
2022-02-21 16:58 ` Robin Murphy
2022-02-21 17:12 ` Mikko Perttunen
2022-02-21 17:12 ` Mikko Perttunen
2022-02-21 17:12 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 2/9] gpu: host1x: Add context bus Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-19 17:54 ` Dmitry Osipenko
2022-02-19 17:54 ` Dmitry Osipenko
2022-02-19 17:54 ` Dmitry Osipenko
2022-02-19 17:54 ` Dmitry Osipenko
2022-02-19 18:15 ` Dmitry Osipenko
2022-02-19 18:15 ` Dmitry Osipenko
2022-02-19 18:15 ` Dmitry Osipenko
2022-02-19 18:15 ` Dmitry Osipenko
2022-02-22 16:21 ` Christoph Hellwig
2022-02-22 16:21 ` Christoph Hellwig
2022-02-22 16:21 ` Christoph Hellwig
2022-02-22 21:30 ` Robin Murphy
2022-02-22 21:30 ` Robin Murphy
2022-02-22 21:30 ` Robin Murphy
2022-02-22 21:30 ` Robin Murphy
2022-02-23 6:36 ` Christoph Hellwig
2022-02-23 6:36 ` Christoph Hellwig
2022-02-23 6:36 ` Christoph Hellwig
2022-02-18 11:39 ` [PATCH v3 3/9] gpu: host1x: Add context device management code Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-19 17:48 ` Dmitry Osipenko
2022-02-19 17:48 ` Dmitry Osipenko
2022-02-19 17:48 ` Dmitry Osipenko
2022-02-19 17:48 ` Dmitry Osipenko
2022-02-21 11:35 ` Mikko Perttunen
2022-02-21 11:35 ` Mikko Perttunen
2022-02-21 11:35 ` Mikko Perttunen
2022-02-21 11:35 ` Mikko Perttunen
2022-02-19 17:52 ` Dmitry Osipenko
2022-02-19 17:52 ` Dmitry Osipenko
2022-02-19 17:52 ` Dmitry Osipenko
2022-02-19 17:52 ` Dmitry Osipenko
2022-02-21 11:37 ` Mikko Perttunen
2022-02-21 11:37 ` Mikko Perttunen
2022-02-21 11:37 ` Mikko Perttunen
2022-02-21 11:37 ` Mikko Perttunen
2022-02-22 16:24 ` Christoph Hellwig [this message]
2022-02-22 16:24 ` Christoph Hellwig
2022-02-22 16:24 ` Christoph Hellwig
2022-02-23 9:44 ` Mikko Perttunen
2022-02-23 9:44 ` Mikko Perttunen
2022-02-23 9:44 ` Mikko Perttunen
2022-02-23 9:44 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 4/9] gpu: host1x: Program context stream ID on submission Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 5/9] iommu/arm-smmu: Attach to host1x context device bus Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 6/9] arm64: tegra: Add Host1x context stream IDs on Tegra186+ Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 7/9] drm/tegra: falcon: Set DMACTX field on DMA transactions Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 8/9] drm/tegra: vic: Implement get_streamid_offset Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-19 18:49 ` Dmitry Osipenko
2022-02-19 18:49 ` Dmitry Osipenko
2022-02-19 18:49 ` Dmitry Osipenko
2022-02-19 18:49 ` Dmitry Osipenko
2022-02-19 18:54 ` Dmitry Osipenko
2022-02-19 18:54 ` Dmitry Osipenko
2022-02-19 18:54 ` Dmitry Osipenko
2022-02-19 18:54 ` Dmitry Osipenko
2022-02-21 11:44 ` Mikko Perttunen
2022-02-21 11:44 ` Mikko Perttunen
2022-02-21 11:44 ` Mikko Perttunen
2022-02-21 11:44 ` Mikko Perttunen
2022-02-21 20:10 ` Dmitry Osipenko
2022-02-21 20:10 ` Dmitry Osipenko
2022-02-21 20:10 ` Dmitry Osipenko
2022-02-21 20:10 ` Dmitry Osipenko
2022-02-22 8:27 ` Mikko Perttunen
2022-02-22 8:27 ` Mikko Perttunen
2022-02-22 8:27 ` Mikko Perttunen
2022-02-22 8:27 ` Mikko Perttunen
2022-02-22 10:46 ` Dmitry Osipenko
2022-02-22 10:46 ` Dmitry Osipenko
2022-02-22 10:46 ` Dmitry Osipenko
2022-02-22 10:46 ` Dmitry Osipenko
2022-02-22 10:54 ` Mikko Perttunen
2022-02-22 10:54 ` Mikko Perttunen
2022-02-22 10:54 ` Mikko Perttunen
2022-02-22 10:54 ` Mikko Perttunen
2022-02-22 11:02 ` Dmitry Osipenko
2022-02-22 11:02 ` Dmitry Osipenko
2022-02-22 11:02 ` Dmitry Osipenko
2022-02-22 11:02 ` Dmitry Osipenko
2022-02-21 17:27 ` Robin Murphy
2022-02-21 17:27 ` Robin Murphy
2022-02-21 17:27 ` Robin Murphy
2022-02-21 17:36 ` Mikko Perttunen
2022-02-21 17:36 ` Mikko Perttunen
2022-02-21 17:36 ` Mikko Perttunen
2022-02-18 11:39 ` [PATCH v3 9/9] drm/tegra: Support context isolation Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen
2022-02-18 11:39 ` Mikko Perttunen via iommu
2022-02-18 11:39 ` Mikko Perttunen
2022-02-19 18:35 ` Dmitry Osipenko
2022-02-19 18:35 ` Dmitry Osipenko
2022-02-19 18:35 ` Dmitry Osipenko
2022-02-19 18:35 ` Dmitry Osipenko
2022-02-21 12:06 ` Mikko Perttunen
2022-02-21 12:06 ` Mikko Perttunen
2022-02-21 12:06 ` Mikko Perttunen
2022-02-21 12:06 ` Mikko Perttunen
2022-02-21 20:02 ` Dmitry Osipenko
2022-02-21 20:02 ` Dmitry Osipenko
2022-02-21 20:02 ` Dmitry Osipenko
2022-02-21 20:02 ` Dmitry Osipenko
2022-02-22 8:37 ` Mikko Perttunen
2022-02-22 8:37 ` Mikko Perttunen
2022-02-22 8:37 ` Mikko Perttunen
2022-02-22 8:37 ` Mikko Perttunen
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