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 <robdclark@xxxxxxxxxxxx>
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 behaviour is rather than guess?
Yeah, I'm pretty sure that's not true as stated, especially with
SCTLR.HUPCF set as qcom_adreno_smmu_write_sctlr() does. However it is
plausible that at the system interconnect level, a sufficient number of
stalled transactions might backpressure other transactions from entering
the same TBU, even if they are destined for a different context. That's
more about the configuration and integration of individual SoCs than the
SMMU IP used.
Robin.
This fixes an issue with an older mesa bug taking outo the system
because of GMU going off into the year.
Sorry, but I don't understand this sentence.
Will
