<div dir="auto">Hi Felix, <div dir="auto">I'm currently on vacation and I will return at the end of the week, so I will not be able to review the patches until then. </div><div dir="auto"> </div><div dir="auto">Oded</div></div><div class="gmail_extra"> <div class="gmail_quote">On Aug 26, 2017 09:19, "Felix Kuehling" <<a href="mailto:Felix.Kuehling@amd.com">Felix.Kuehling@amd.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">This is based on amd-kfd-staging, because that's easier for me to test. I'm planning to port to amd-staging-4.x for submission upstream. With this patch series, I'm able to turn retry faults on and handle the interrupt storm from VM faults. Only the first VM fault interrupt per process and address gets handled the usual way. Retry interruptr are filtered in a new prescreening stage in amdgpu_ih_process. Pending faults are tracked in a hash table in IH to detect retry faults and a FIFO in the VM for later processing. Looking up the VM from the fault interrupt depends on the PASID. Currently only KFD VMs have proper PASIDs. TODO (need some help with these): * Allocate PASIDs for graphics contexts * Setup VMID-PASID mapping during graphics command submission * Confirm that graphics page faults have the correct PASID in the IV Once that's done, we should have a foundation to start working on HMM and proper SVM memory management with demand paging. Felix Kuehling (9): drm/amdgpu: Fix error handling in amdgpu_vm_init drm/amdgpu: Add PASID management drm/radeon: Add PASID manager for KFD drm/amdkfd: Separate doorbell allocation from PASID drm/amdkfd: Use PASID manager from KGD drm/amd: Set the PASID for KFD VMs drm/amdgpu: Add prescreening stage in IH processing lib: Closed hash table with low overhead drm/amdgpu: Track pending retry faults in IH and VM drivers/gpu/drm/Kconfig | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 6 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 82 ++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h | 12 + drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 88 +++- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 21 +- drivers/gpu/drm/amd/amdgpu/cik_ih.c | 14 + drivers/gpu/drm/amd/amdgpu/cz_ih.c | 14 + drivers/gpu/drm/amd/amdgpu/iceland_ih.c | 14 + drivers/gpu/drm/amd/amdgpu/si_ih.c | 14 + drivers/gpu/drm/amd/amdgpu/tonga_ih.c | 14 + drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 90 ++++ drivers/gpu/drm/amd/amdkfd/kfd_device.c | 18 +- drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 48 +- drivers/gpu/drm/amd/amdkfd/kfd_module.c | 6 - drivers/gpu/drm/amd/amdkfd/kfd_pasid.c | 84 ++-- drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 10 +- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 8 +- drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 8 +- drivers/gpu/drm/radeon/radeon_kfd.c | 36 +- include/linux/chash.h | 349 +++++++++++++++ lib/Kconfig | 8 + lib/Makefile | 2 + lib/chash.c | 521 ++++++++++++++++++++++ 30 files changed, 1376 insertions(+), 105 deletions(-) create mode 100644 include/linux/chash.h create mode 100644 lib/chash.c -- 2.7.4 _______________________________________________ amd-gfx mailing list <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a> </blockquote></div></div>