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Re: [Qemu-devel] Seabios dislikes -M isapc

From: Natalia Portillo
Subject: Re: [Qemu-devel] Seabios dislikes -M isapc
Date: Tue, 9 Feb 2010 20:36:30 +0000

There are operating systems that simple conflict with some assumptions made by PCI architecture.

Rembember that the PC memory map changed to include the PCI configuration space and so on, space that can be expected to contain other data, or not at all, and could be used in ISA/EISA/VLB/MCA systems by PCI-unaware operating systems or applications.

El 09/02/2010, a las 19:50, Anthony Liguori escribió:

On 02/08/2010 04:17 AM, Jan Kiszka wrote:

Seabios seems to have some assumptions built in that break when -M isapc
is selected. Is this supposed to work or is isapc about to die?

Does anything actually require isapc?

pc has an ISA bridge, a PCI VGA device is still VGA/SVGA compliant.

Would anything break if we just dropped isapc?


Anthony Liguori


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