From: "Jan Beulich" <JBeulich@suse.com>
To: Tiejun Chen <tiejun.chen@intel.com>
Cc: Ross Lagerwall <ross.lagerwall@citrix.com>,
Xen-devel <xen-devel@lists.xen.org>, Keir Fraser <keir@xen.org>,
len.brown@intel.com
Subject: Re: [PATCH 2/2] mwait_idle: Broadwell support
Date: Thu, 16 Oct 2014 15:06:00 +0100 [thread overview]
Message-ID: <543FECE8020000780003F43A@mail.emea.novell.com> (raw)
In-Reply-To: <543FC00C.3050708@intel.com>
>>> On 16.10.14 at 14:54, <tiejun.chen@intel.com> wrote:
> Did you guys validate this in real machine? Or any potential side affect?
>
> When I do IGD GFX passthrough with qemu-xen-traditional, I found in the
> boot phase of VM, the target will reboot. After I revert this everything
> is fine.
Please be more precise. What is "target" here? Host? Guest?
Also, reporting issues just verbally (i.e. without any logs or other
actual technical information) rarely makes a lot of sense.
> Note I don't add anything into codes. Here I just build Xen unstable 4.5
> to use qemu-xen-traditional. And additionally, my BDW is based on
> stepping E, and guest is WindXP.
But the change is only about C-state handling for a particular
CPU model. There's really nothing being added that doesn't
already work fine elsewhere. I.e. this patch being the apparent
culprit of a problem you see makes it relatively likely that your
hardware is having some issue.
Jan
next prev parent reply other threads:[~2014-10-16 14:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-08 12:42 [PATCH 1/2] mwait_idle: Disable Baytrail Core and Module C6 auto-demotion Ross Lagerwall
2014-09-08 12:42 ` [PATCH 2/2] mwait_idle: Broadwell support Ross Lagerwall
2014-09-08 13:24 ` Jan Beulich
2014-10-16 12:54 ` Chen, Tiejun
2014-10-16 14:06 ` Jan Beulich [this message]
2014-10-17 1:22 ` Chen, Tiejun
2014-10-17 8:40 ` Jan Beulich
2014-10-24 3:02 ` Chen, Tiejun
2014-10-17 1:00 ` Chen, Tiejun
2014-09-08 13:22 ` [PATCH 1/2] mwait_idle: Disable Baytrail Core and Module C6 auto-demotion Jan Beulich
2014-09-08 14:02 ` Ross Lagerwall
2014-09-08 14:20 ` Jan Beulich
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