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Untracked MMIO r/w #14

Open codyit opened 9 years ago

codyit commented 9 years ago

Having a lot of these for Iris5100 on mbpr13" late'13 ( 0x0a2e), a haswell chip not yet included in your device table: https://gist.github.com/codyit/4c80895d9a65625232db

Bug, or unimplemented

kernel: [ 13.727266] vGT warning:(vgt_emulate_write:423) vGT: untracked MMIO write: vm_id(0), offset=0x43408,len=4, val=0x80000000!!! kernel: [ 13.727389] vGT warning:(vgt_emulate_read:326) vGT: untracked MMIO read: vm_id(0), offset=0x43408,len=4, val=0x80000000!!!

tcwu2005 commented 8 years ago

I saw similar warning of Iris5200. Dodyit, is your guest working fine with GPU passthrough?

codyit commented 8 years ago

It was quite a while ago and I'm pretty drained these days. IIRC although performance wasn't great, it was working. (Also IIRC) It would crash from time to time, possibly due to these unimplemented MMIO? I've no idea. I guess you'd have better luck if your device is implemented as per their device list.

codyit commented 8 years ago

It's just normal considering I had to manually add my device into the list, just created this in case we have more mbpr users interested in this, oh well

zhiyuanlv commented 8 years ago

Sorry left your question for long time! Are you running Linux guest? The MMIOs are display related, and in the new GVT-g release, we disabled IPS feature inside guest, and there should not be such warnings. Even having such warning, it should not cause crash I think.

We have mailing list now "igvt-g@lists.01.org", and there are more QA people there, who may give more timely response. Thanks!