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authorChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
commit3e4c5a6261770bced301b5e74233e7866166ea5b (patch)
tree9379fddaba693ef8a045da06efee8529baa5f6f4 /gitlab/issues_text/target_arm/host_missing/accel_missing/2886
parente5634e2806195bee44407853c4bf8776f7abfa4f (diff)
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clean up repository
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-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.