[Xen-devel] passthrough failure on Radeon HD 6450.

[??? <chm.bj@xxxxxxxxxxx>]

Hi, 

I am passing through ATI adapter on DQ45CB, but failed. Can someone help 
provide some clue? I can make sure VT-D enabled?

Main board       : DQ45CB.
Display adapter : [Radeon HD 6450] issue, 
dom0 linux         : linux 3.1.2
xen                     : xen 4.3.0. with patches in 
http://www.davidgis.fr/blog/index.php?2013/07/13/954-xen-430-stable-vga-passthrourh-for-ati
dom U                : cn_windows_7_ultimate_x64_dvd_x15-66043.iso


After display external adapter (pci=01:00.0 01:00.1  is configured in 
xlexample.hvm,
1. After startup, win7 is blue screen, which shows it is in infinite loop.
2. /var/log/xen/qemu-dm-example.hvm.log shows 4 bytes is accessed on address 
0x0E, but 0x0E address is not 4-byte alignment. 
   the is attached belows.

Is it possible that VGA BIOS from Radeon HD 6450 should be extracted and put 
somewhere ?

xc: error: linux_gnttab_set_max_grants: ioctl SET_MAX_GRANTS failed (22 = 
Invalid argument): Internal error
xen be: qdisk-5632: xc_gnttab_set_max_grants failed: Invalid argument
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:05.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
[00:06.0] xen_pt_pci_config_access_check: Error: Failed to access register with 
invalid access size alignment. (addr: 0x0e, len: 4)
Issued domain 1 reboot
qemu: terminating on signal 1 from pid 2832
~                                                                               
                                             
thanks
huiming


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