Am 23.08.19 um 23:33 schrieb Kuehling, Felix:
From: Oak Zeng <[email protected]>
Set snooped PTE flag according to mapping flag. Write request to a
page with snooped bit set, will send out invalidate probe request
to TCC of the remote GPU where the vram page resides.
Change-Id: I799f68ec7a5a1abf32075f5ef31051641a0b3736
Signed-off-by: Oak Zeng <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 9aafcda6c488..8a7c4ec69ae8 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -604,6 +604,9 @@ static uint64_t gmc_v9_0_get_vm_pte_flags(struct
amdgpu_device *adev,
if (flags & AMDGPU_VM_PAGE_PRT)
pte_flag |= AMDGPU_PTE_PRT;
+ if (flags & AMDGPU_VM_PAGE_INVALIDATE_PROBE)
+ pte_flag |= AMDGPU_PTE_SNOOPED;
+
That is still a NAK without further checks. We need to make absolutely
sure that we don't set this when PCIe routing is in use.
Christian.
return pte_flag;
}
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