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

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

>From: Keir Fraser [mailto:keir@xxxxxxxxxxxxx]
>Sent: 2007年7月19日 18:29
>
>On 19/7/07 11:04, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:
>
>> +    uint32_t video_flags;       /* S3_bios or s3_mode */
>> +    uint32_t video_mode;        /* Mode setting for s3_mode */
>
>I'd like this to be two three-way flags: video_bios_reset and
>video_mode_reset. Each can be set to yes, no, or default.
>
>Yes means force to true. No means force to false. Default means default
>Xen
>policy (i.e., false unless changed by Xen command-line option
>'acpi_sleep=').
>
>If video_bios_reset is true, we call c000:0003.
>
>If video_mode_reset is true, we reset video mode to what we set up at
>boot
>time.
>
>Anything other wakeup re-set should be done by dom0 itself.
>
> -- Keir

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? :-)

Thanks,
Kevin

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