With this series, the kernel is able to mitigate
most page faults on Navi 3 and 4 without causing a
hang and without a need to reset the GPU, when the
amdgpu.noretry=0 module parameter is set.
Fix various issues with retry fault handling.
Enable filter CAM on Navi 3 and 4 which is a
HW block that filters the repeated page fault
interrupts that happen when retry faults are
enabled, making the handling more efficient.
Changes in v2:
* Reordered patches in the series to put bug fixes first
* Enable retry fault interrupt in init_system_aperture_regs()
instead of in set_fault_enable_default()
* Added a patch to respect the noretry flag on GFX12.1 too
Changes in v3:
* This series now includes fixes for Navi 4 too which
were previously submitted in a separate series.
* Dropped patch that improved handling of timestamps
on the page fault interrupts. I'll come up with
a different solution for that problem later.
* Dropped patches that solve race condition between
retry fault handling and filter CAM ACK because
they conflict with Christian's ongoing work.
I'll revisit that later.
* Reworked the series into smaller patches for
easier reviews.
* Addressed comments from Tvrtko's review.
Thank you Tvrtko for taking the time to review!
Timur Kristóf (14):
drm/amdgpu: Respect noretry flag for retry faults on GFX12.1
drm/amdgpu/gfxhub: Enable retry fault interrupts when needed
drm/amdgpu/ih: Don't perturb HW registers when accessing soft IH ring
drm/amdgpu/ih: Add retry_cam_ack IH function pointer
drm/amdgpu/ih6.1: Use IH_SW_RING_SIZE for soft IH ring instead of
PAGE_SIZE
drm/amdgpu/ih7.0: Use IH_SW_RING_SIZE for soft IH ring instead of
PAGE_SIZE
drm/amdgpu/gmc11: Pass cam_index to retry fault handler
drm/amdgpu/gmc12: Pass cam_index to retry fault handler
drm/amdgpu/gmc12: Use AMDGPU_PTE_IS_PTE flag for init_pte_flags on
GFX12.0
drm/amdgpu/vm: Use init PTE flags and NOALLOC in
amdgpu_vm_handle_fault()
drm/amdgpu/ih6.0: Use MMIO ACK for retry CAM on IH 6.0
drm/amdgpu/ih7.0: Use MMIO ACK instead of doorbell for retry CAM on IH
7.0
drm/amdgpu/ih6.0: Enable retry CAM on Navi 3 dGPUs
drm/amdgpu/ih7.0: Enable retry CAM on Navi 4 dGPUs
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 7 ++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 8 ++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v11_5_0.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v12_0.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c | 4 +--
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c | 2 ++
drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v2_1.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v3_0.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gfxhub_v3_0_3.c | 9 +++++--
drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 5 +++-
drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 8 ++++--
drivers/gpu/drm/amd/amdgpu/ih_v6_0.c | 25 ++++++++++++++++-
drivers/gpu/drm/amd/amdgpu/ih_v6_1.c | 9 ++++++-
drivers/gpu/drm/amd/amdgpu/ih_v7_0.c | 30 +++++++++------------
drivers/gpu/drm/amd/amdgpu/mmhub_v4_2_0.c | 2 +-
drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 4 +++
drivers/gpu/drm/amd/amdgpu/vega20_ih.c | 8 +++++-
20 files changed, 133 insertions(+), 43 deletions(-)
--
2.54.0
