drm/amdgpu: add vm fault information to devcoredump

Add page fault information to the devcoredump.

Output of devcoredump:
**** AMDGPU Device Coredump ****
version: 1
kernel: 6.7.0-amd-staging-drm-next
module: amdgpu
time: 29.725011811
process_name: soft_recovery_p PID: 1720

Ring timed out details
IP Type: 0 Ring Name: gfx_0.0.0

[gfxhub] Page fault observed
Faulty page starting at address: 0x0000000000000000
Protection fault status register: 0x301031

VRAM is lost due to GPU reset!

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
index 147100c27c2d412e73e4143d7a0310536b0880de..6d059f853adc4867d8ca9a47ade15108ebb20be0 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
@@ -203,6 +203,18 @@ amdgpu_devcoredump_read(char *buffer, loff_t offset, size_t count,
                           coredump->ring->name);
        }
 
+       if (coredump->adev) {
+               struct amdgpu_vm_fault_info *fault_info =
+                       &coredump->adev->vm_manager.fault_info;
+
+               drm_printf(&p, "\n[%s] Page fault observed\n",
+                          fault_info->vmhub ? "mmhub" : "gfxhub");
+               drm_printf(&p, "Faulty page starting at address: 0x%016llx\n",
+                          fault_info->addr);
+               drm_printf(&p, "Protection fault status register: 0x%x\n\n",
+                          fault_info->status);
+       }
+
        if (coredump->reset_vram_lost)
                drm_printf(&p, "VRAM is lost due to GPU reset!\n");
        if (coredump->adev->reset_info.num_regs) {