[PATCH] drm/amdkfd: fix dropped interrupt in kfd_int_process_v11

[Kasiviswanathan, Harish]

[AMD Official Use Only - General]

Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan at amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Graham Sider
Sent: Friday, September 23, 2022 10:27 AM
To: amd-gfx at lists.freedesktop.org
Cc: Kuehling, Felix <Felix.Kuehling at amd.com>; Kim, Jonathan <Jonathan.Kim at amd.com>; Sider, Graham <Graham.Sider at amd.com>
Subject: [PATCH] drm/amdkfd: fix dropped interrupt in kfd_int_process_v11

Shader wave interrupts were getting dropped in event_interrupt_wq_v11 if the PRIV bit was set to 1. This would often lead to a hang. Until debugger logic is upstreamed, expand comment to stop early return.

Signed-off-by: Graham Sider <Graham.Sider at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_int_process_v11.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v11.c b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v11.c
index a6fcbeeb7428..0d53f6067422 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v11.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v11.c
@@ -350,11 +350,11 @@ static void event_interrupt_wq_v11(struct kfd_dev *dev,
 				print_sq_intr_info_inst(context_id0, context_id1);
 				sq_int_priv = REG_GET_FIELD(context_id0,
 						SQ_INTERRUPT_WORD_WAVE_CTXID0, PRIV);
-				if (sq_int_priv /*&& (kfd_set_dbg_ev_from_interrupt(dev, pasid,
+				/*if (sq_int_priv && (kfd_set_dbg_ev_from_interrupt(dev, pasid,
 						KFD_CTXID0_DOORBELL_ID(context_id0),
 						KFD_CTXID0_TRAP_CODE(context_id0),
-						NULL, 0))*/)
-					return;
+						NULL, 0)))
+					return;*/
 				break;
 			case SQ_INTERRUPT_WORD_ENCODING_ERROR:
 				print_sq_intr_info_error(context_id0, context_id1);
--
2.25.1