Re: [PATCH] iommu/arm-smmu-qcom: Only enable stall on smmu-v2

2024-12-19 Thread Rob Clark
On Thu, Dec 19, 2024 at 4:08 AM Robin Murphy wrote: > > On 2024-12-19 11:30 am, Will Deacon wrote: > > On Mon, Dec 16, 2024 at 09:10:17AM -0800, Rob Clark wrote: > >> From: Rob Clark > >> > >> On mmu-500, stall-on-fault seems to stall all context banks, causing the > >> GMU to misbehave. So limi

Re: [PATCH] iommu/arm-smmu-qcom: Only enable stall on smmu-v2

2024-12-19 Thread Robin Murphy
On 2024-12-19 11:30 am, Will Deacon wrote: On Mon, Dec 16, 2024 at 09:10:17AM -0800, Rob Clark wrote: From: Rob Clark On mmu-500, stall-on-fault seems to stall all context banks, causing the GMU to misbehave. So limit this feature to smmu-v2 for now. MMU-500 has public documentation so plea

Re: [PATCH] iommu/arm-smmu-qcom: Only enable stall on smmu-v2

2024-12-19 Thread Will Deacon
On Mon, Dec 16, 2024 at 09:10:17AM -0800, Rob Clark wrote: > From: Rob Clark > > On mmu-500, stall-on-fault seems to stall all context banks, causing the > GMU to misbehave. So limit this feature to smmu-v2 for now. MMU-500 has public documentation so please can you dig up what the actual behav

Re: [PATCH] iommu/arm-smmu-qcom: Only enable stall on smmu-v2

2024-12-16 Thread Rob Clark
On Mon, Dec 16, 2024 at 12:28 PM Akhil P Oommen wrote: > > On 12/16/2024 10:40 PM, Rob Clark wrote: > > From: Rob Clark > > > > On mmu-500, stall-on-fault seems to stall all context banks, causing the > > GMU to misbehave. So limit this feature to smmu-v2 for now. > > > > This fixes an issue wit

Re: [PATCH] iommu/arm-smmu-qcom: Only enable stall on smmu-v2

2024-12-16 Thread Akhil P Oommen
On 12/16/2024 10:40 PM, Rob Clark wrote: > From: Rob Clark > > On mmu-500, stall-on-fault seems to stall all context banks, causing the > GMU to misbehave. So limit this feature to smmu-v2 for now. > > This fixes an issue with an older mesa bug taking outo the system > because of GMU going off

[PATCH] iommu/arm-smmu-qcom: Only enable stall on smmu-v2

2024-12-16 Thread Rob Clark
From: Rob Clark On mmu-500, stall-on-fault seems to stall all context banks, causing the GMU to misbehave. So limit this feature to smmu-v2 for now. This fixes an issue with an older mesa bug taking outo the system because of GMU going off into the year. Signed-off-by: Rob Clark --- drivers/