fix(quickemu): enable vmware TSC and disable ACPI PCI hotplug for macOS

[flexiondotorg]

• Pass vmware-cpuid-freq=on to -cpu on Intel hosts to enable VMware TSC frequency reporting and improve macOS timing
• Add ICH9-LPC flag to disable ACPI PCI hotplug bridge support to avoid macOS PCI hotplug issues (required for QEMU 6.1+)

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have performed a self-review of my code

[cubic-dev-ai]

1 issue found across 1 file

Confidence score: 3/5

• The unconditional addition of the ICH9-LPC hotplug flag in quickemu can cause QEMU startup failures on older versions that lack the property, which is a concrete user-facing regression.
• Score reflects a medium-severity compatibility risk (6/10) with a clear failure mode, though limited to older QEMU environments.
• Pay close attention to quickemu - guard or version-check the ICH9-LPC hotplug flag to avoid startup failures on older QEMU.

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="quickemu">

<violation number="1" location="quickemu:683">
P2: The new ICH9-LPC hotplug flag is added unconditionally, but older QEMU versions don’t expose `ICH9-LPC.acpi-pci-hotplug-with-bridge-support`. This causes QEMU startup to fail with “Property ... not found” on those versions. Guard the flag behind a QEMU version check (>= 6.1) and keep the previous args for older builds.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}