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From: "Zhang, Yang Z" <yang.z.zhang@intel.com>
To: Matthias <matthias.kannenberg@googlemail.com>
Cc: "tim@xen.org" <tim@xen.org>,
	"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Please revert / review 077fc1c04d70ef1748ac2daa6622b3320a1a004c
Date: Mon, 16 Jun 2014 07:47:11 +0000	[thread overview]
Message-ID: <A9667DDFB95DB7438FA9D7D576C3D87E0AAF9ABB@SHSMSX104.ccr.corp.intel.com> (raw)
In-Reply-To: <CABoYbGpm_Mfa+t=mZn=GAsGrJKtptydZ9T1Q9Vj-pKHtOY9i7g@mail.gmail.com>

Matthias wrote on 2014-06-12:
> Yes, I'm seeing the
> (XEN) testing: enable log dirty mode
> 
> in xl dmesg.

I cannot understand why log dirty is used in AMD gfx passthrough.

> 
> 
> Also, here are logs and additional information from a start with a xen 
> build up to the 077fc1c changeset. DomU Name is WORK.
> 
> I haven't attached a xl dmesg log because it was only filled with this:

It's better to attach the whole log since there are some debug messages which are useful. If the log buffer isn't enough, please add conring_size=xxM to Xen cmd line.

> 
> domain = 0, device id = 0x98, fault address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x90, fault 
> address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x98, fault 
> address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x90, fault 
> address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x98, fault 
> address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x90, fault 
> address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x98, fault 
> address = 0xffffffc0, flags = 0
> (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x90, fault 
> address = 0xffffffc0, flags = 0

This is really strange. The fault shows it is caused by dom0's activity. But the device have assigned to the guest. Are you sure the devices(00:13.0 and 00:12.0) are hidden and dom0 is not using it? BTW, what are the devices of 00:12.0 and 00:13.0?


Best regards,
Yang

  reply	other threads:[~2014-06-16  7:47 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-11 15:44 Please revert / review 077fc1c04d70ef1748ac2daa6622b3320a1a004c Matthias
2014-06-12  1:02 ` Zhang, Yang Z
2014-06-12  9:35   ` Jan Beulich
2014-06-12 13:49     ` Matthias
2014-06-16  7:47       ` Zhang, Yang Z [this message]
2014-06-16  8:08         ` Jan Beulich
2014-06-16 13:42           ` Matthias
2014-06-16 14:52             ` Jan Beulich
2014-06-16 15:07               ` Matthias
2014-06-18  7:25             ` Zhang, Yang Z
2014-06-18 22:21               ` Matthias
2014-06-19  1:07                 ` Matthias
2014-06-19  1:29                   ` Matthias
2014-06-19 12:25                 ` Zhang, Yang Z
2014-06-19 16:22                   ` Matthias
2014-06-20  0:20                     ` Zhang, Yang Z
2014-06-20  8:22                     ` Jan Beulich
2014-06-20 10:07                       ` Matthias
2014-06-20 11:18                         ` Jan Beulich
2014-06-20 11:27                           ` Zhang, Yang Z
2014-06-20 11:24                         ` Zhang, Yang Z
2014-06-20 11:28                       ` Zhang, Yang Z
2014-06-20  8:17                   ` Jan Beulich
2014-06-20 11:26                     ` Zhang, Yang Z

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