masahi commented on a change in pull request #7833:
URL: https://github.com/apache/tvm/pull/7833#discussion_r614212762



##########
File path: src/runtime/vulkan/vulkan.cc
##########
@@ -990,57 +1058,59 @@ Module 
VulkanModuleCreate(std::unordered_map<std::string, VulkanShader> smap,
 
 VulkanThreadEntry* VulkanThreadEntry::ThreadLocal() { return 
VulkanThreadStore::Get(); }
 
-VulkanStagingBuffer* VulkanThreadEntry::StagingBuffer(int device_id, size_t 
size) {
-  if (!staging_buffers_[device_id]) {
-    staging_buffers_[device_id] = std::unique_ptr<VulkanStagingBuffer>(new 
VulkanStagingBuffer());
+VulkanHostVisibleBuffer* GetOrAllocate(

Review comment:
       ok updated. Though at this point I'm not sure the way we sync on staging 
buffer, namely after realloc + memcpy is done, is correct with respect to this 
point. 




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