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Re: [Qemu-devel] [Linaro-acpi] [RFC PATCH 0/7] hw/arm/virt: Dynamic ACPI


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [Linaro-acpi] [RFC PATCH 0/7] hw/arm/virt: Dynamic ACPI v5.1 table generation
Date: Wed, 12 Nov 2014 16:52:25 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0


On 12/11/2014 16:39, Peter Maydell wrote:
> > Definitely, I think having the OS manually program the BARs only makes sense
> > in an environment where you don't have a full-featured boot loader or you
> > don't trust it. In servers and virtual machines, the PCI bus should always 
> > come
> > fully set up. This also implies that the OS should not have to deal with
> > registers for setting up the translation between PCI and system address
> > ranges.
>
> It seems to me like complicated stuff like that definitely belongs
> in the UEFI/bootloader blob, though. I'd rather QEMU just modelled
> the hardware and let the guest (or the firmware, which is guest
> code from QEMU's point of view) set it up however it wants.

It definitely doesn't belong in QEMU!

Paolo



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