[Xen-devel] pass through failure for HD 6450 on dq45cb

[成会明 <chm.bj@xxxxxxxxxxx>]

hi,

1. domain U Windows is installed from cn_windows_7_ultimate_x64_dvd_x15-66043.iso

2. To be passthroughed Display adapter is  HD 6450, detail can be found in lspci.vv, the adapter is secondary adapter for domain 0.

3. From xlexample.hvm, gfx_passthrough is set to 0, so HD 6450 is secondary display adapter for domain U.

4. domain 0 kernel is "Linux localhost.localdomain 3.1.2 #1 SMP Fri Oct 25 19:24:29 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux".

5. On line 68 of xl.dmesg: "(XEN) Interrupt remapping disabled".
   If interrupt remapping disabled, the passthroughed adapter should not work.
   right ?
   I am not sure if this line really reflects the fact.
6. I am trying to verify if cn_windows_7_ultimate_x64_dvd_x15-66043.iso will crash if installed on bare machine with HD6450 with secondary adapter.

But ScreenShot.png(attached) is the result after domain U startup. Any comments are appreciated. 


thanks

huiming

Attachment: xl.dmesg
Description: Binary data

Attachment: xlexample.hvm
Description: Binary data

Attachment: qemu-dm-example.hvm.log
Description: Binary data

Attachment: lspci.vv
Description: Binary data

Attachment: Screenshot.png
Description: PNG image

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