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SubjectRe: [PATCH] kvm/x86: reserve bit KVM_HINTS_PHYS_ADDRESS_SIZE_DATA_VALID
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On 9/21/22 18:32, Jim Mattson wrote:
>> The issue is that this "hint" effectively breaks other VMMs that already provide
>> an accurate guest.MAXPHYADDR.
>
> Any VMM that doesn't provide an accurate guest.MAXPHYADDR is broken.
> Why do we need a "hint" that the virtual processor works?

I agree. Since old (and current) versions of QEMU wouldn't get the bit
anyway, just fix the next one. I'll follow up on the QEMU mailing list.

Paolo

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