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Re: [Qemu-devel] [PATCH] kvm: Move kvm_allows_irq0_override() to target-

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] kvm: Move kvm_allows_irq0_override() to target-i386
Date: Tue, 24 Jul 2012 09:54:01 +0100

On 24 July 2012 09:50, Avi Kivity <address@hidden> wrote:
> On 07/23/2012 08:58 PM, Peter Maydell wrote:
>> The other related thing that
>> might be surprising for x86-background people is that being
>> able to present the guest with a virtual CPU that looks like
>> a pre-virtualization CPU (eg the A9) isn't really an intended
>> use case either. (The ARM world has much less of the 'everything
>> must be fully backwards compatible for existing OSes' than x86...)
> I expect this to change once ARM servers become a reality.

Yes, compatibility for guests migrating forwards from old
virt-supporting host CPUs to new ones is important; it's
only the pre-virt to post-virt that is less interesting.

-- PMM

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