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RE: [Xen-devel] [PATCH 4/4] Enable ACPI sleep in XenLinux


  • To: "Keir Fraser" <keir@xxxxxxxxxxxxx>
  • From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
  • Date: Thu, 19 Jul 2007 21:24:34 +0800
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 19 Jul 2007 06:22:29 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcfJ7DsHT6DCsnFlTp+jNB3R5tK/WgAA3TzmAAWQPOAAAE0PJAAAJUmQ
  • Thread-topic: [Xen-devel] [PATCH 4/4] Enable ACPI sleep in XenLinux

>From: Keir Fraser [mailto:keir@xxxxxxxxxxxxx]
>Sent: 2007年7月19日 21:17
>
>On 19/7/07 14:12, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:
>
>> Still I'm not inclined to this way by two reasons:
>> - There's really no point to reset Xen's VGA mode since xen doesn't
>> require to touch it.
>> - As in another mail, we either need to support dom0 real mode to
>> try dom0's re-set path, or write a new one. But either way seems not
>> meaningful, does it? :-)
>
>Doing vm86 or real-mode crap in dom0 itself is obviously not on.
>However,
>currently Linux will only ever regurgitate Xen's original video mode. So
>the
>video-mode field has no real user.

OK, that's the current fact.

>
>So... The video-mode stuff is removed for now. A flags field is added to
>the
>platform hypercall so that something can be added later in a backwards
>compatible manner if there is an actual user for it.
>

Acceptable. Anyway now new platform is all expected to provide BIOS 
automatic VGA resume option before transitioning to wakeup vector.

Thanks,
Kevin

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