diff options
| author | Graham Sider <Graham.Sider@amd.com> | 2023-02-06 14:04:42 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 09:59:03 -0400 |
| commit | 895797d9193b38e759bc01268a8e3887e521f682 (patch) | |
| tree | 73797e8e8d06b8cbe881acb0ecd593d5ff85a805 /drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | |
| parent | 2e8cc5d317d12f7fb4f66361a3ce5427f0abe2cd (diff) | |
drm/amdgpu/bu: Add use_mtype_cc_wa module param
By default, set use_mtype_cc_wa to 1 to set PTE coherence flag MTYPE_CC
instead of MTYPE_RW by default. This is required for the time being to
mitigate a bug causing XCCs to hit stale data due to TCC marking fully
dirty lines as exclusive.
Signed-off-by: Graham Sider <Graham.Sider@amd.com>
Reviewed-by: Joseph Greathouse <Joseph.Greathouse@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index da4e50aef95a..8bc37826a99f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -823,6 +823,13 @@ module_param_named(no_queue_eviction_on_vm_fault, amdgpu_no_queue_eviction_on_vm #endif /** + * DOC: use_mtype_cc_wa (bool) + */ +bool amdgpu_use_mtype_cc_wa = true; +MODULE_PARM_DESC(use_mtype_cc_wa, "Use MTYPE_CC workaround (0 = use MTYPE_RW where applicable, 1 = use MTYPE_CC where applicable (default))"); +module_param_named(use_mtype_cc_wa, amdgpu_use_mtype_cc_wa, bool, 0444); + +/** * DOC: pcie_p2p (bool) * Enable PCIe P2P (requires large-BAR). Default value: true (on) */ |