Re: [PATCH 2/2] media: venus: Fix iova allocation from restrict region
Dmitry Baryshkov <[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 | <jf2zzsnwe66owxs4rgpugbipaztw2xxeejz6q7vjvnttq3lnz5@spdh5ylsqggp> |
On Tue, Aug 18, 2026 at 01:25:58PM +0530, Vikash Garodia wrote: > > 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 Reviewed-by: Dmitry Baryshkov <[email protected]> -- With best wishes Dmitry