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Question regarding address space ballooning #2

Open Jaeyong-Yoo opened 9 years ago

Jaeyong-Yoo commented 9 years ago

Hello,

I've got a question regarding the address space ballooning of XenGT. The paper says that the address space ballooning only happens for global memory. Is this global memory the PCI BAR 2 memory of GPU Device?

For instance, if I issue lspci, it gives

$ lspci -v -s 00:02.0 | grep size Memory at f7800000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64]

And, is the global memory the physical memory at 0xe0000000 (256MB)?

l1viathan commented 9 years ago

Hi Jaeyong, the BAR2 is called Aperture, is a part of graphics memory - always at the low end.