From 0291150d3c618712337931bf26ef758f944aa32c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Sat, 31 Oct 2020 18:46:59 +0100 Subject: [PATCH] drm/amdgpu: make sure retry faults are handled in a work item on Vega MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Looks like we can't enabled the IH1/IH2 feature for Vega20, make sure retry faults are handled on a separate ring anyway. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 030272eeb71d..d03792d270c2 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -525,14 +525,29 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev, addr = (u64)entry->src_data[0] << 12; addr |= ((u64)entry->src_data[1] & 0xf) << 44; - if (retry_fault && amdgpu_gmc_filter_faults(adev, addr, entry->pasid, - entry->timestamp)) - return 1; /* This also prevents sending it to KFD */ - - /* If it's the first fault for this address, process it normally */ - if (retry_fault && !in_interrupt() && - amdgpu_vm_handle_fault(adev, entry->pasid, addr)) - return 1; /* This also prevents sending it to KFD */ + if (retry_fault) { + /* Returning 1 here also prevents sending the IV to the KFD */ + + /* Process it onyl if it's the first fault for this address */ + if (entry->ih != &adev->irq.ih_soft && + amdgpu_gmc_filter_faults(adev, addr, entry->pasid, + entry->timestamp)) + return 1; + + /* Delegate it to a different ring if the hardware hasn't + * already done it. + */ + if (in_interrupt()) { + amdgpu_irq_delegate(adev, entry, 8); + return 1; + } + + /* Try to handle the recoverable page faults by filling page + * tables + */ + if (amdgpu_vm_handle_fault(adev, entry->pasid, addr)) + return 1; + } if (!printk_ratelimit()) return 0; -- 2.11.0