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device: 0.809
instruction: 0.748
graphic: 0.649
boot: 0.634
mistranslation: 0.527
socket: 0.504
other: 0.487
network: 0.453
vnc: 0.422
semantic: 0.420
assembly: 0.252
KVM: 0.161
ACPI MADT advertises GITS even when disabled
Description of problem:
As per the command line given above, QEMU shall emulate a GICv4 without GIC Interrupt Translation Service (GITS).
The following happens:
- ACPI **incorrectly** lists a GITS (type 0xf) structure in the MADT with GITS MMIO Base = 0x8080000
- The OS reads that structure and interprets it to mean a GITS is present at the given MMIO address
- Subsequent access to GITS MMIO causes a data abort (0x25) because QEMU doesn't emulate a GITS (as requested)
The bug is thus that QEMU wrongly advertises GITS as present (via the MADT) when it is in fact absent.
Steps to reproduce:
1. Disable GITS emulation by passing `its=off` on the QEMU command line
2. Check if a GITS structure is listed in the ACPI MADT (must be present in ACPI MADT only if GITS is enabled and absent otherwise)
Additional information:
When booting with `its=on` (default), everything works as expected.
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