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From: Jay Cornwall <jay.cornwall@amd.com>
To: amd-gfx@lists.freedesktop.org
Cc: Jay Cornwall <jay.cornwall@amd.com>
Subject: [PATCH] drm/amdkfd: Use same SQ prefetch setting as amdgpu
Date: Mon, 19 Oct 2020 09:02:21 -0500	[thread overview]
Message-ID: <20201019140221.5840-1-jay.cornwall@amd.com> (raw)

0 causes instruction fetch stall at cache line boundary under some
conditions on Navi10. A non-zero prefetch is the preferred default
in any case.

Fixes soft hang in Luxmark.

Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c
index 72e4d61ac752..ad0593342333 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c
@@ -58,8 +58,9 @@ static int update_qpd_v10(struct device_queue_manager *dqm,
 	/* check if sh_mem_config register already configured */
 	if (qpd->sh_mem_config == 0) {
 		qpd->sh_mem_config =
-				SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
-					SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT;
+			(SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
+				SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT) |
+			(3 << SH_MEM_CONFIG__INITIAL_INST_PREFETCH__SHIFT);
 #if 0
 		/* TODO:
 		 *    This shouldn't be an issue with Navi10.  Verify.
-- 
2.17.1

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             reply	other threads:[~2020-10-19 14:02 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-19 14:02 Jay Cornwall [this message]
2020-10-19 16:22 ` [PATCH] drm/amdkfd: Use same SQ prefetch setting as amdgpu Felix Kuehling

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