From: Jay Cornwall jay.cornwall@amd.com
commit d56b1980d7efe9ef08469e856fc0703d0cef65e4 upstream.
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 Reviewed-by: Felix Kuehling Felix.Kuehling@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- 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_ /* 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.