SystemIO conflicts are not firmware bugs
5 days ago
- ACPI warnings about SystemIO range conflicts are often incorrectly attributed to firmware bugs, but are generally not firmware errors.
- ACPI uses ASL to define Operation Regions for hardware access, and conflicts can arise when OS drivers directly access hardware without coordinating with ACPI methods.
- The kernel blocks native drivers from claiming regions used by ACPI Operation Regions to prevent potential race conditions and hardware damage.
- Users are advised to use ACPI drivers for such devices instead of native drivers to avoid issues.