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| author | David Belanger <david.belanger@amd.com> | 2024-07-02 17:56:41 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-28 22:03:31 +0100 |
| commit | 8201c17e986e6c1ee7c6a9a781f881843d82ad47 (patch) | |
| tree | 7dfc1660f92377fcb5a2e895954044911eeb6d56 /drivers/gpu/drm/amd/amdkfd/kfd_svm.c | |
| parent | eacbc9d28391be33cd47024aeb72e4fd33f2c646 (diff) | |
| download | linux-8201c17e986e6c1ee7c6a9a781f881843d82ad47.tar.gz linux-8201c17e986e6c1ee7c6a9a781f881843d82ad47.tar.bz2 linux-8201c17e986e6c1ee7c6a9a781f881843d82ad47.zip | |
drm/amdgpu: Restore uncached behaviour on GFX12
commit 35b6162bb790555ad56b7f0d120e307b8334d778 upstream.
Always use MTYPE_UC if UNCACHED flag is specified.
This makes kernarg region uncached and it restores
usermode cache disable debug flag functionality.
Do not set MTYPE_UC for COHERENT flag, on GFX12 coherence is handled by
shader code.
Signed-off-by: David Belanger <david.belanger@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit eb6cdfb807d038d9b9986b5c87188f28a4071eae)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_svm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 1893c27746a5..8c61dee5ca0d 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1276,13 +1276,7 @@ svm_range_get_pte_flags(struct kfd_node *node, break; case IP_VERSION(12, 0, 0): case IP_VERSION(12, 0, 1): - if (domain == SVM_RANGE_VRAM_DOMAIN) { - if (bo_node != node) - mapping_flags |= AMDGPU_VM_MTYPE_NC; - } else { - mapping_flags |= coherent ? - AMDGPU_VM_MTYPE_UC : AMDGPU_VM_MTYPE_NC; - } + mapping_flags |= AMDGPU_VM_MTYPE_NC; break; default: mapping_flags |= coherent ? |