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Re: [PATCH v2 2/2] x86/pvh: zero VGA information
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 22 Apr 2024 12:27:14 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 22 Apr 2024 10:27:27 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 22.04.2024 11:52, Roger Pau Monne wrote:
> PVH guests skip real mode VGA detection, and never have a VGA available, hence
> the default VGA selection is not applicable, and at worse can cause confusion
> when parsing Xen boot log.
>
> Zero the boot_vid_info structure when Xen is booted from the PVH entry point.
>
> This fixes Xen incorrectly reporting:
>
> (XEN) Video information:
> (XEN) VGA is text mode 80x25, font 8x16
>
> When booted as a PVH guest.
>
> Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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