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-id = 2886
-title = "ACPI MADT advertises GITS even when disabled"
-state = "opened"
-created_at = "2025-03-28T15:50:00.229Z"
-closed_at = "n/a"
-labels = ["ACPI", "target: arm", "workflow::Patch available"]
-url = "https://gitlab.com/qemu-project/qemu/-/issues/2886"
-host-os = "Linux"
-host-arch = "Host:x86 Guest:Arm"
-qemu-version = "9.2.3"
-guest-os = "Custom OS"
-guest-arch = "Arm (aarch64)"
-description = """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."""
-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 = """When booting with `its=on` (default), everything works as expected."""