On 12/01/2023 13:22, Laszlo Ersek wrote:
Detect the issue in PlatformMaxCpuCountInitialization(), and
print an error message and *hang* if the issue is present.
Would this mean that OVMF would refuse to start with all current
distro versions of qemu (when not using KVM), or am I
misunderstanding?
Your understanding is correct.
I apologise in advance if this is a stupid question, but: given that we
can detect the issue (as per this patch), and given also:
On 12/01/2023 08:28, Laszlo Ersek wrote:
In QEMU v5.1.0, the CPU hotplug register block misbehaves: the
negotiation protocol is (effectively) broken such that it
suggests that switching from the legacy interface to the modern
interface works, but in reality the switch never happens.
...would it work to detect the issue and treat it as "modern interface
is not supported: continue to use the legacy interface"? IOW, to treat
"Present=0" as indicating that the modern interface is not supported.
Thanks,
Michael
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