Re: [PATCH 2/2] media: venus: Fix iova allocation from restrict region
Vikash Garodia <[email protected]>
| Newsgroups | org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel,org.kernel.vger.linux-media,org.kernel.vger.stable |
|---|---|
| Message-ID | <[email protected]> |
On 8/18/2026 12:34 PM, Dmitry Baryshkov wrote: > On Wed, Aug 12, 2026 at 04:25:59PM +0530, Vishnu Reddy wrote: >> The VPU issues DMA through several SMMU streams, and the hardware does >> not give every stream the same addressable range. The non-pixel stream >> cannot address the low 600MB of IOVA space, while the pixel stream can >> address the full range: >> +-----------------------------------------------------------+ >> | non-pixel stream addressable range (600 MB - 3.5 GB) | >> | 0x25800000 - 0xe0000000 | >> +-----------------------------------------------------------+ >> | pixel stream addressable range (0 - 3.5 GB) | >> | 0x00000000 - 0xe0000000 | >> +-----------------------------------------------------------+ > Does this split apply to all generations of Venus? We support MSM8916, > for example. There has been work to enable MSM8974. Yes, applicable for all VPUs Regards, Vikash