On 11/26/25 15:46, Alex Deucher wrote: > On Wed, Nov 26, 2025 at 9:29 AM Christian König > <[email protected]> wrote: >> >> On 11/26/25 14:29, Timur Kristóf wrote: >>> Enable the soft IRQ handler ring on SI, CIK, VI and >>> delegate the processing of all VM faults to the soft >>> IRQ handler ring. >>> >>> Why? >>> >>> On old GPUs, it may be an issue that handling the interrupts from >>> VM faults is too slow and the interrupt handler (IH) ring may >>> overflow, which can cause an eventual hang. This is a concern >>> especially on SI and CIK where there are some HW limitations >>> regarding robustness features with some shader instructions, >>> which in practice means that users can see thousands of VM faults >>> during normal gaming use even when the game or the UMD don't do >>> anything wrong. >>> >>> With this series, we spend much less time in the IRQ handler that >>> interacts with the HW IH ring, which significantly reduces the >>> chance of hangs. >>> >>> There are also a few misc improvements to the GMC v6 code. >> >> Reviewed-by: Christian König <[email protected]> for the entire >> series. >> >> @Alex do you want to pick that up for amd-staging-drm-next or should I? > > I'll be off the next few days so if you can pick it up, that would be great.
Going to take care of that tomorrow. Thanks, Christian. > > Thanks, > > Alex > >> >> Regards, >> Christian. >> >>> >>> Timur Kristóf (10): >>> drm/amdgpu/si_ih: Enable soft IRQ handler ring >>> drm/amdgpu/cik_ih: Enable soft IRQ handler ring >>> drm/amdgpu/iceland_ih: Enable soft IRQ handler ring >>> drm/amdgpu/tonga_ih: Enable soft IRQ handler ring >>> drm/amdgpu/cz_ih: Enable soft IRQ handler ring >>> drm/amdgpu/gmc6: Don't print MC client as it's unknown >>> drm/amdgpu/gmc6: Cache VM fault info >>> drm/amdgpu/gmc6: Delegate VM faults to soft IRQ handler ring >>> drm/amdgpu/gmc7: Delegate VM faults to soft IRQ handler ring >>> drm/amdgpu/gmc8: Delegate VM faults to soft IRQ handler ring >>> >>> drivers/gpu/drm/amd/amdgpu/cik_ih.c | 12 ++++++++++++ >>> drivers/gpu/drm/amd/amdgpu/cz_ih.c | 10 ++++++++++ >>> drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 20 ++++++++++++++------ >>> drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 6 ++++++ >>> drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 6 ++++++ >>> drivers/gpu/drm/amd/amdgpu/iceland_ih.c | 10 ++++++++++ >>> drivers/gpu/drm/amd/amdgpu/si_ih.c | 12 ++++++++++++ >>> drivers/gpu/drm/amd/amdgpu/tonga_ih.c | 10 ++++++++++ >>> 8 files changed, 80 insertions(+), 6 deletions(-) >>> >>
