drm/amdkfd: fix TLB flush after unmap for GFX9.4.2

erichuang22 · alexdeucher · commit 1210e2f1033d · 2024-03-27T08:51:47.000-04:00
TLB flush after unmap accidentially was removed on
gfx9.4.2. It is to add it back.

Signed-off-by: Eric Huang &lt;jinhuieric.huang@amd.com&gt;
Reviewed-by: Harish Kasiviswanathan &lt;Harish.Kasiviswanathan@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -1473,7 +1473,7 @@ static inline void kfd_flush_tlb(struct kfd_process_device *pdd,
 
 static inline bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev)
 {
-	return KFD_GC_VERSION(dev) > IP_VERSION(9, 4, 2) ||
+	return KFD_GC_VERSION(dev) >= IP_VERSION(9, 4, 2) ||
 	       (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) && dev->sdma_fw_version >= 18) ||
 	       KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 0);
 }

Original file line number	Diff line number	Diff line change
`@@ -1473,7 +1473,7 @@ static inline void kfd_flush_tlb(struct kfd_process_device *pdd,`
`1473`	`1473`
`1474`	`1474`	`static inline bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev)`
`1475`	`1475`	`{`
`1476`		`- return KFD_GC_VERSION(dev) > IP_VERSION(9, 4, 2) \|\|`
	`1476`	`+ return KFD_GC_VERSION(dev) >= IP_VERSION(9, 4, 2) \|\|`
`1477`	`1477`	`(KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) && dev->sdma_fw_version >= 18) \|\|`
`1478`	`1478`	`KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 0);`
`1479`	`1479`	`}`